Technical description of boilers type de. Thermal calculation of the boiler DE16–14GM Steam boiler de 16 14gm

Ministry of Education and Science of the Russian Federation

Federal State Budgetary Educational Institution

Higher Professional Education

«Magnitogorsk State Technical University named after G.I. Nosov"

(FGBOU VPO "MGTU")

department

course work

discipline: "Heat generating installations"

on the topic: "Thermal calculation of the boiler DE-16-14GM"

Performer: Pivkin A.A., 4th year student, SO-12 group

Supervisor: Trubitsyna G.N., Ph.D. tech. Sci., Associate Professor

The work was admitted to the defense ""20g.

(signature)

The work is protected "" 20g. with an estimate

(signature)

Magnitogorsk 2016

Ministry of Education and Science of the Russian Federation

Federal State Budgetary Educational Institution

higher professional education

"Magnitogorsk State Technical University

Them. G.I. Nosov»

(FGBOU VPO "MGTU")

department "Heat and gas supply, ventilation and

Water supply, water disposal»

TASK FOR COURSE WORK

student

(Full Name)

Initial data:

Deadlines: « » 20 g

Supervisor: / /

Task received: / /

(signature) (signature transcript)

Magnitogorsk 2016

EXERCISE

It is necessary to make a verification calculation of the DE-16 type boiler unit with elements of the structural calculation of individual heating surfaces (water economizer). The main purpose of the verification calculation is to determine the main performance indicators of the boiler unit, as well as design measures that ensure high reliability and economy of its operation under specified conditions.

INITIAL DATA

Boiler unit DE-16-14 GM on gas and liquid fuel, brand GM (gas-oil burner), RF, Saratov region, natural gas from the Saratov-Gorky gas pipeline.

Table 1

Structural characteristics of the steam boiler type DE-16-14 GM

Biysk boiler plant

№	Name of indicator	Meaning
	steam capacity,
	Steam pressure at the outlet of the boiler, (kgf / cm 2)
	steam temperature,
	Feed water temperature
	flue gas temperature,
	Design fuel type	Natural gas
	Fuel consumption
	Type of combustion device	TLZM
	Surface area of ​​the combustion mirror, m 2	6,39
	The volume of the combustion chamber, m 3	22,5
	Radiation heating surface area, m 2	30,3
	Heating surface area of ​​the convective beam, m 2	207,3
	Outer diameter of convective bundle tubes, m	0,051
	Transverse pitch of pipes, m	0,11
	Longitudinal pipe pitch, m	0,09
	Number of rows of pipes, pcs
	Length of one water economizer pipe, m	1,5
	Boiler gross efficiency,
	Boiler overall dimensions mm: length width height	8655 5205 6050

table 2

Operating mass of fuel

DEVICE AND OPERATION OF THE BOILER DE-16-14 GM

2.1 General view of the boiler

A drawing of a longitudinal section of the boiler DE-16 is given in Appendix 1.

2.2. Description

Steam boiler DE-16-14 GM gas-oil vertical-water-tube with natural circulation type E (DE) with a capacity of 16 tons of saturated steam (194 ° C) per hour, used for the technological needs of industrial enterprises, in heating, ventilation and hot water supply systems. The combustion chamber of the DE boiler in the form of the Latin "D" is formed by screen pipes, located to the right of the convective bundle, equipped with vertical pipes expanded in the upper and lower drums. The main components of the DE-16-14GM boiler are the upper and lower drums, the pipe system of the DE boiler consists of a convective bundle, a rear front and side screen, forming the combustion chamber of the DE-16-14GM boiler.

Boiler DE-16 14 GM with steam capacity up to 16 t/h with a diameter of the upper and lower drums - 1000 mm. The distance between the drums is 1700 mm and 2750 mm, respectively (the maximum possible under the conditions of transportation of the block by rail). For access inside the drums in the front and rear bottoms of each of them there are manholes with shutters (manhole cover). Drums for boilers with a working pressure of 1.4 MPa (abs) are made of steel 16GS or 09G2S and have a wall thickness of 13 mm, respectively.

Steam boiler DE-16 14 GM with a capacity of 16 and 25 t / h with a two-stage evaporation scheme. The rear part of the screens of the furnace and part of the convective beam, located in the zone with a higher gas temperature, are moved to the second stage of evaporation. The circuits of the second evaporation stage have an unheated downcomer system.

On boilers with a capacity of 16 and 25 t/h, the superheater is vertical, drained from two rows of pipes.

The DE-16-14 GM boiler is supplied both in blocks and in bulk; upper and lower drums with intra-drum devices, a pipe system of screens and a convective bundle (if necessary, a superheater), a support frame, insulation and sheathing.

Steel BVES or cast iron EB economizers are used as tail heating surfaces of boilers.

The steam boiler DE 16 14 GM is equipped with systems for cleaning heating surfaces using a GUV (shock wave generator).

The fixed supports of the boilers are the front supports of the lower drum. The middle and rear supports of the lower drum are movable and have oval holes for bolts, which are attached to the support frame for the period of transportation.

The boiler DE-16-14 GM is equipped with two spring-loaded safety valves 17s28nzh, one of which is a control valve. On boilers without a superheater, both valves are installed on the upper drum of the boiler and either of them can be selected as control. On boilers with a superheater, the control valve is the superheater outlet manifold valve.

Rated steam capacity and steam parameters (corresponding to GOST 3619-82) are provided at a feed water temperature of 100°C when burning fuels: natural gas with a specific heat of combustion of 29300-36000 kJ/kg (7000-8600 kcal/m3) and fuel oil grades M40 and M100 according to GOST 10588-75.

Control range 20-100% of nominal steam capacity. Short-term operation with a load of 110% is allowed. Maintaining the superheat temperature in boilers with superheaters is provided in the load range of 70-100%.

The boiler DE-16-14 GM can operate in the pressure range of 0.7-1.4 MPa.

In boiler houses intended for the production of saturated steam without imposing strict requirements for its quality, the steam output of type E (DE) boilers at a pressure reduced to 0.7 MPa can be taken the same as at a pressure of 1.4 MPa.

For the DE-16-14 GM boiler, the throughput of the safety valves 17s28nzh corresponds to the rated output of the boiler at a pressure of at least 0.8 MPa (abs).

Feed water and steam quality standards must comply with the requirements regulated by the rules of the "Federal Service for Environmental, Technological and Nuclear Supervision" of Russia.

The average service life of boilers between overhauls with the number of hours of use of the installed capacity of 2500 h / year is 3 years, the average service life before decommissioning is at least 20 years.

Steam boiler DE-16-14 GM can be used as a hot water boiler (according to the technical documentation of the enterprise).

2.3. Pipe system of the boiler DE-16-14 GM

Convective pipes DE-16-14 GM and wall pipes DE-16 14 GM are made exclusively from a seamless boiler pipe with a diameter of 51 mm, a wall thickness of 2.5 mm. Since the weld can become a concentrator of internal stresses and lead to a decrease in corrosion resistance, strength, and even to the destruction of the product. The boiler pipe is produced by cold or hot deformation, which provides an excellent result in terms of quality and durability. For the convective pipe DE-16-14 GM and the screen pipe DE-16 14 GM, GOST 8734-75 or GOST 8731-74 is applied (steel grades: St10, St15, St20, St25 and wall thickness, respectively, from 2.5 to 13 mm) . As a rule, DE-16-14 GM convective pipes and DE-16 14 GM screen pipes are operated under conditions of high and supercritical steam parameters. In this case, a subspecies of boiler pipe rolling is used: pipes for steam boilers, they perfectly satisfy these conditions. The pipe for the pipe system of the boiler DE-16 14 GM is made by hot rolling on a continuous mill and by hot pressing, which ensures excellent results at any temperature. The combustion chamber of the boiler DE-16 14 GM is formed from screen pipes flared in the upper and lower drums of the boiler DE-16 14 GM in the form of the Latin letter "D".

2.4. Boiler drum DE-16

The drum of the boiler DE-16, working pressure 1.4 MPa, is made of steel 16GS, 09G2S, the wall is 13 and 22 mm thick, respectively. The technology for manufacturing drums of the boiler DE-16-14 is similar to the original factory technology; cutting sheet metal, processing the edge of the sheet for welding, rolling the sheets with rollers to obtain the shells of the future drum of the DE-16 14 GM boiler, welding the shells and bottoms under submerged arc welding using a welding machine, drilling holes for the boiler pipe ø 51 mm, by milling with subsequent knurling holes, which, when rolling the pipe in the drum during the installation of the DE-16-14 GM boiler, gives a more reliable connection when checking the hydraulic test of the DE-16 14 GM boiler. The control of welds is provided due to the providence of ultrasonic diagnostics of the drum of the boiler DE-16 14 GM. As a finished product, the drum of the DE-4 boiler is assigned and stuffed with a serial number, stamped with a certificate and permission to use "ROSTEKHNADZOR". For inspection of the drums of DE boilers and the devices located in them, as well as for cleaning pipes with cutters, manholes are located on the rear bottoms; boilers DE-16 and DE-10 with a long drum also have a hole on the front bottom of the upper drum.

On the upper generatrix of the upper drum of the boiler DE-16-14, branch pipes are welded for the installation of safety valves, the main steam valve or gate valve, valves for steam sampling, steam sampling for own needs (blowing).

In the water space of the upper drum of the DE-16 boiler there is a feed pipe, in the steam volume of the drum there is a steam separation device. In the lower drum of the boiler DE-16 14 GM, there is a perforated pipe for blowing, a device for warming up the drum during kindling (for boilers with a capacity of 16 t / h and above) and a fitting for draining water.

To monitor the water level, two level indicators are installed in the upper drum of the DE-16 boiler.

On the front bottom of the upper drum of the DE-16 boiler, two fittings are installed for selecting water level pulses for the boiler automation.

2.5. Boiler automation DE-16-14 GM

Boiler automation functions:

1. Measurement and signaling: automation of the boiler DEV-16 14 GM with the use of light and sound signaling in case of deviation of technological parameters from the norm.

2. Ignition and shutdown of the boiler: the automation of the DE-16 14 GM hot water boiler automatically ignites and shuts down the boiler, without the participation of maintenance personnel, which complies with the requirements of the PB 12-529-03 rules.

3. Regulation of the combustion process: automatic regulation of the fuel supply to the boiler furnace depending on the temperature of the water at the outlet of the boiler;

4. Vacuum: automatics of the boiler DEV 16 14 GM provides regulation of vacuum in the boiler furnace, the ratio of "fuel-air" with the help of MEO or frequency converters installed on the fan (VDN) and smoke exhauster (DN).

5. Protection: automatics of the DE-16 14 GM hot water boiler ensures the boiler shutdown in case of changes in the set technological parameters:

● when the temperature of the water at the outlet of the boiler rises,

● when the air pressure drops,

● in case of deviation of the gas pressure in front of the burner,

● when the vacuum in the boiler furnace decreases,

● when the water pressure at the outlet of the boiler deviates,

● when the fuel pressure drops before the burner,

● when the water flow through the boiler decreases,

● when the burner flame goes out,

● in the event of a voltage failure in the protection circuits,

● in case of emergency stop of the fan and smoke exhauster,

6. Measurement and signaling: automation of the boiler DEV-16-14 GM, provides measurement and signaling of the parameters of the boiler:

● water pressure at the boiler inlet;

● water pressure at the outlet to the boiler,

● water temperature at the boiler inlet,

● water temperature at the outlet to the boiler,

● air pressure in front of the burner,

● rarefaction in the boiler furnace,

● water flow through the boiler,

● flue gas temperature.

7. "Upper level" control (option): when equipping the automation system of a hot water boiler DE 16 14 GM with control of "upper level" means, it is implemented;

● presentation of information about the operation of the boiler on the computer monitor screen in the form of mnemonic diagrams and graphs,

● boiler control,

● archiving and registration of parameters.

In the automation of the boiler DEV-16-14 GM, at the request of PB 10-574-03, an electronic recorder is installed - a four-channel "Termodat17M5", fixing the root cause of the accident.

Water economizer

Cast iron economizers

The water economizer is a tubular heat exchanger in which the feed water is heated to a temperature of 30 - 40 ° C below the boiling point before entering the boiler in order to prevent vaporization and hydraulic shocks inside it. Heating occurs due to the heat of the exhaust gases, thereby increasing the efficiency of the boiler unit.

Modifications

An example of a symbol for cast iron economizers:

EB1-300I(P) is an economizer unit with one column, heating surface area of ​​300 m2 and gas-pulse (I) or steam (P) cleaning.

Fig 1. Block cast-iron single-column water economizer.

A - longitudinal section; B - cross section; 1 - damper; 2 - blowing device; 3 - cast-iron finned tubes; 4 - gas duct.

In steam boilers, the temperature of the heat-receiving wall throughout the unit is almost the same and slightly exceeds the boiling point. As the steam pressure rises, the wall temperature rises, resulting in an increase in flue gas temperature. It is irrational to release gases with such a high temperature into the atmosphere. Devices designed to solve this problem include economizers.

Cast iron block economizers are used as tail heating surfaces of stationary steam boilers of types DE, KE and DKVR.

Economizers are installed individually on the boiler or on a group of low pressure (up to 2.4 MPa) and low power boilers and can be disconnected from the boilers both through the gas and water circuits.

Economizers of this type are made of cast-iron finned tubes with flanges, which are interconnected by means of cast-iron coils (arcs). The length of the economizer's ribbed cast iron pipes is 2 or 3 m, the diameter of the pipes is 76x8 mm, the square connecting flange is 150 x 150 mm. The total area of ​​the pipe heating surface is 2.95, respectively; 4.49 m2.

Rice. 2. Parts of cast iron water economizer.

BUT- ribbed tube; B- connection of pipes with the help of a coil (arc).

The number of pipes in a package in a horizontal plane is determined based on the velocity of the combustion products, usually in the range of 6-9 m/s; the number of horizontal rows is determined by the required total heating surface.

Water moves sequentially through all pipes from the bottom up, and the combustion products pass through the gaps between the fins of the pipes from top to bottom. With such a scheme of water movement (lifting), a better removal of air bubbles is ensured. To remove possible deposits, the outer surfaces of the economizers are periodically blown with steam (P) or compressed air (gas-pulse (I) cleaning) using blowers.

Rice. 5. The movement of water and combustion products in the economizer.

To ensure reliable operation, the necessary fittings are installed at the inlet and outlet - safety valves and shut-off valves, thermometers, a pressure gauge, a drain valve, a check valve, and at the top point of the economizer - air vents.

Rice. 6. Scheme of switching on a cast-iron economizer.

1 - boiler drum;
2 - shut-off valve;
3 - check valve;
4 - valve on the downstream line; 5 - safety valve; 6 - air vent valve; 7 - cast iron water economizer; 8 - drain valve.

Cast iron economizers are supplied either as separate parts to be assembled on site, or as transportable units in lightweight lining with metal sheathing.

Economizers EB2-94I(P) - EB2-236I(P) are supplied in one unit, EB1-300I(P) and EB1-330I(P) - in two units, EB1-646I(P) and EB1-808I(P) - in three blocks.

The advantage of cast iron economizers: the use of cast iron in heating surfaces and connecting parts significantly increases the service life due to its resistance to corrosion, both on the inner and outer surfaces.

PURPOSE OF THE PRODUCT

Boilers DE - double-drum, vertical water-tube are designed to generate saturated or slightly superheated steam used for the technological needs of industrial enterprises, in heating, ventilation and hot water supply systems.

The main technical characteristics of the boiler DE-16-14GMO are given in the table.

Price
RUB 4,800,000

Model Specifications

PRODUCT DESCRIPTION

The combustion chamber of the boilers is located on the side of the convective bundle, equipped with vertical pipes expanded in the upper and lower drums. The width of the combustion chamber along the axes of the side screen pipes is the same for all boilers - 1790 mm. Depth of the combustion chamber: 1930 - 6960 mm. The main components of the boilers are the upper and lower drums, the convection beam, the front, side and rear screens that form the combustion chamber.

The pipes of the gas-tight partition and the right side screen, which also forms the under and ceiling of the combustion chamber, are inserted directly into the upper and lower drums. The ends of the pipes of the rear screen are welded to the upper and lower collectors Ф 159x6 mm. Pipes of the front screen of the DE-16-14GMO boiler are expanded in the upper and lower drums.

In all standard sizes of DE boilers, the diameter of the upper and lower drums is 1000 mm. The distance between the axes of the drums is 2750 mm (the maximum possible under the conditions of transportation of the block by rail). The length of the cylindrical part of the boiler drums with a capacity of

10 t/h - 6000 mm. For access inside the drums in the front and rear bottoms of each of them there are manhole gates. Drums for boilers with a working absolute pressure of 1.4 and 2.4 MPa (14 and 24 kgf / cm 2) are made from steel sheet according to GOST 5520-79 from steel grades 16GS and 09G2S GOST 19281-89 and have a wall thickness, respectively 13 and 22 mm.

In the water space of the upper drum there is a feed pipe and a pipe for introducing phosphates, in the steam volume - separation devices. In the lower drum there is a device for steam heating of water in the drum during kindling and pipes for draining water, for boilers with a capacity of 16 t / h - perforated pipes for periodic blowing.

In boilers with a steam capacity of 16 t/h, two-stage evaporation is used. The rear part of the screens of the furnace and part of the convective beam, located in the zone with a higher gas temperature, are moved to the second stage of evaporation. The circuits of the second evaporation stage have an unheated downcomer system.

The convective beam is separated from the combustion chamber by a gas-tight partition, in the rear part of which there is a window for gases to enter the beam. The partition is made of pipes F 51x2.5 mm, placed close to each other with a step of 5 = 55 mm and welded together. When entering the drums and pipes, they are bred in two rows. The wiring points are sealed with metal spacers and fireclay concrete. The convective bundle is formed by in-line vertical pipes Ф 51 x 2.5 mm, flared in the upper and lower drums. The pitch of the pipes along the drum is 90 mm, the transverse pitch is 110 mm (except for the average pitch, equal to 120 mm).

Boilers DE-16-14GMO do not have stepped baffles in the beam, and the required level of gas velocities is maintained by changing the beam width from 890 to 1000 mm. Flue gases pass through the entire section of the convective beam and exit through the front wall into the gas box, which is located above the combustion chamber, and through it they pass to the economizer located behind the boiler.

All standard sizes of boilers have the same circulation scheme. The contours of the side screens and the convective bundle of all standard sizes of boilers, as well as the front screen of boilers with a steam capacity of 16 t / h, are closed directly to the drums; the contours of the rear screen of all boilers are connected to the drum through intermediate collectors: the lower one is distributing (horizontal) and the upper one is collecting (inclined). The ends of the intermediate collectors from the side opposite to the drums are connected by an unheated recirculation pipe Ф 76 x 3.5 mm.

As the primary separation devices of the first stage of evaporation, guide shields and visors installed in the upper drum are used, which ensure the issuance of the steam-water mixture to the water level. As secondary separation devices of the first stage of the DE-16-14GMO boiler, a horizontal louvered separator and a perforated sheet are used. The separation devices of the second stage of evaporation are longitudinal shields, which ensure the movement of the steam-water mixture first to the end, and then along the drum to the transverse partition separating the compartments. The compartments of staged evaporation are connected to each other by steam through a window above the transverse partition, and by water - through a make-up pipe Ф 89 - 108 mm, located in the water volume.

On boilers with a capacity of 16 t / h, the superheater is vertical, drained, from two rows of pipes Ф 51x2.5 mm, the pipes of the outer row when entering the collectors Ф 159 mm are cased up to D 38 mm.

Tight shielding of the side walls (relative pipe pitch a = 1.08), the ceiling and the bottom of the combustion chamber allow the boilers to use light insulation in two or three layers of insulating boards with a total thickness of 100 mm, laid on a layer of fireclay concrete along a grid 15-20 mm thick. For DE-16-14GMO boilers, the lining of the front wall is made of fireclay bricks 125 mm thick and several layers of insulating boards 175 mm thick, the total thickness of the lining of the front wall is 300 mm. The lining of the rear wall consists of a layer of fireclay bricks 65 mm thick and several layers of insulating boards 200 mm thick; the total thickness of the lining is 265 mm. To reduce suction into the gas path of the boiler from the outside, the insulation is covered with metal sheet sheathing 2 mm thick, which is welded to the piping frame. Cut sheets of sheathing are supplied by the factory in packages. The use of on-pipe lining with a dense pipe pitch improves the dynamic characteristics of boilers and significantly reduces heat loss to the environment, as well as losses during start-ups and shutdowns.

Standard cast-iron economizers EB, proven by long operating experience, are used as tail heating surfaces of boilers.

The boilers are equipped with stationary blowers located on the left side of the boiler. Saturated or superheated steam with a pressure of at least 0.7 MPa (7 kgf / cm 2) is used to blow the boilers.

All boilers have a support frame, to which the mass of boiler elements operating under pressure, the mass of boiler water, as well as the mass of the piping frame, pipe lining and casing are transferred. The fixed supports of the boilers are the front supports of the lower drum. The middle and rear supports of the lower drum are movable and have oval holes for bolts that are attached to the support frame for the period of transportation.

Each boiler E (DE) is equipped with two spring-loaded safety valves, one of which is a control valve. On boilers without a superheater, both valves are installed on the upper drum of the boiler and any of them can be selected as a control valve; on boilers with a superheater, the control valve is the superheater outlet manifold valve.

Rated steam capacity and steam parameters corresponding to GOST 3619-89,

are provided at a feed water temperature of 100 ° C when burning fuels: natural gas with a specific heat of combustion of 29300 - 36000 kJ / kg (7000 - 8600 kcal / m 3) and fuel oil grades 40 and 100 according to GOST 10588-75.

Adjustment range from 20 to 100% of the nominal steam output. Short-term operation with a load of 110% of the nominal steam capacity is allowed. Maintaining the superheat temperature in boilers with superheaters is provided in the load range of 70-100%

Boilers DE-16-14GMO can operate in the pressure range of 0.7-1.4 MPa (7-14 kgf / cm 2). With a decrease in operating pressure, the efficiency of the boiler does not decrease.

In boiler houses designed for the production of saturated steam without imposing strict requirements on its quality, the steam output of DE type boilers at a pressure reduced to 0.7 MPa (7 kgf / cm 2) can be taken the same as at a pressure of 1.4 MPa ( 14 kgf / cm 2).

For boilers of type E (DE), the capacity of the safety valves corresponds to the rated performance of the boiler at an absolute pressure of at least 0.8 MPa (8 kgf / cm 2). If the heat-using equipment connected to the boiler has an operating pressure limit less than the values ​​indicated above, additional safety valves should be installed on it to protect this equipment. When working at reduced pressure, the safety valves on the boiler and additional safety valves installed on the equipment must be adjusted to the actual working pressure.

With a decrease in pressure in the boilers to 0.7 MPa (7 kgf / cm 2), no changes in the configuration of the boilers with economizers are required, since in this case the subcooling of water in the feed economizers to the saturation temperature of the steam in the boiler is more than 20 ° C, which satisfies requirements of Rostekhnadzor rules.

The boilers are delivered assembled in one transportable unit, which includes the upper and lower drums with intra-drum devices, a pipe system of screens and a convective bundle (if necessary, a superheater), a support frame, a strapping frame, sheathing, insulation, a burner.

Steam boiler DE-16-14 GM-O (DE-16-14-225 GM-O) * - a boiler, the main elements of which are the upper and lower drums, a furnace formed by screened walls, a burner and a bundle of vertical pipes between the drums. These are gas-oil vertical water-tube boilers designed to generate saturated steam by burning natural gas, fuel oil, light liquid fuel for the technological needs of industrial enterprises, in heating, ventilation and hot water supply systems.

Explanation of the name of the boiler DE-16-14GM-O (DE-16-14-225GM-O)*:
DE - boiler type; 16 - steam capacity (t / h); 14 - absolute vapor pressure (kgf / cm 2); GM - boiler for burning gaseous fuels / liquid fuels (diesel and heating domestic fuel, fuel oil, oil); 225 – temperature of superheated steam, °C (in the absence of a figure, steam is saturated); O - the boiler is supplied in sheathing and insulation.

Price: 5,298,200 rubles, 5,557,800 rubles (*)

Steam boiler DE-16-14GM-O is a gas-oil, vertical-water-tube natural circulation steam boiler, the main elements of which are the upper drum, the lower drum, as well as a shielded combustion chamber and a convective beam.

Technical characteristics of the boiler DE-16-14GM-O

Basic complete set:

Complete boiler block with sheathing and insulation

Stairs and platforms

Burner GM-10

Additional equipment:

The DE-16-14GM-O boiler uses a single-stage evaporation system. The water circulates as follows: heated feed water is fed into the upper drum below the water level. Water enters the lower drum through screen pipes. From the lower drum, water enters the convective beam, under heating, turning into a steam-water mixture, it rises to the upper drum.

The main components of the boiler DE-16-14GM-O are the upper and lower drums, the convective bundle and the combustion chamber forming: the left combustion screen, the gas-tight partition, the right side screen, the screening pipes of the front wall of the furnace and the rear screen.

The pipes of the partition and the right side screen, which also forms the under and ceiling of the combustion chamber, are inserted directly into the upper and lower drums. The ends of the pipes of the rear screen of the boiler DE-16-14GM-O are welded to the upper and lower collectors. The pipes of the front screen of the boiler are welded to the collectors.

To burn fuel oil and natural gas, a gas-oil burner GM-10 is installed on the boiler DE-16-14GM-O.

Boiler drums DE-10-16-14GM-O:

Upper drum of the boiler DE-16-14GM-O

The lower drum of the boiler DE-16-14GM-O

Laz boiler DE-16-14GM-O

Pipe system of the boiler DE-16-14GM-O:

Screen pipes of the boiler DE-16-14GM-O

Convective (boiling) pipes of the boiler DE-16-14GM-O

Drop and bypass pipes DE-16-14GM-O

Upper collector of the boiler DE-16-14GM-O

The lower collector of the boiler DE-16-14GM-O

Fittings and water-indicating devices for the boiler DE-16-14GM-O

for operation on natural gas/oil
productivity 16.0 t/h

Boiler DE-16-14GM-O (E-16-1.4GM) is a steam boiler, the main elements of which are the upper and lower drums, a furnace formed by screened walls with a burner and a bundle of vertical pipes between the drums.

Specifications

The device and principle of operation of the boiler DE-16-14GM-O (E-16-1.4GM)

The boiler DE-16-14GM-O (E-16-1.4GM) has an inner diameter of the upper and lower drums of 1000 mm.

The pipes of the partition and the right side screen, which also forms the under and ceiling of the combustion chamber, are inserted directly into the upper and lower drums. The ends of the pipes of the rear screen are welded to the upper and lower manifolds. The pipes of the front screen of the boiler DE-16-14GM-O (E-16-1.4GM) are flared in the upper and lower drums.

In the water space of the upper drum there is a feed pipe and a pipe for introducing phosphates, in the steam volume there is a separation device. In the lower drum there is a device for steam heating of water in the drum during kindling and pipes for draining water, perforated pipes for periodic blowing.

The combustion chamber of the boiler DE-16-14GM-O (E-16-1.4GM) is separated from the convective bundle by a gas-tight partition, in the rear part of which there is a window for gases to enter the bundle. The partition is made of tightly set and welded pipes. At the entrance to the drums, the pipes are bred in two rows. The vertical part of the partition is sealed with metal spacers welded between the pipes. The convective beam of the boiler DE-16-14GM-O (E-16-1.4GM) is formed by vertical pipes located in the corridor, expanded in the upper and lower drums.

The execution of the rear screen of the firebox is possible in two versions:

The pipes of the rear screen of the furnace are welded to the upper and lower screen collectors, which in turn are welded to the upper and lower drums. The ends of the rear screen collectors on the side opposite to the drums are connected by an unheated recirculation pipe. To protect the recirculation pipes and collectors from thermal radiation, two pipes are installed at the end of the combustion chamber, connected to the drums by rolling.

C-shaped tubes forming the rear screen of the furnace and attached to the drums by rolling.

The boiler DE-16-14GM-O (E-16-1.4GM) has no baffles in the convective beam, and the required level of gas velocities is also maintained by changing the beam width. Flue gases pass through the entire section of the convective beam and exit through the front wall into the gas box, which is located above the combustion chamber. Further, flue gases pass through the gas box to the economizer located behind the boiler DE-16-14GM-O (E-16-1.4GM).

The boiler DE-16-14GM-O (E-16-1.4GM) uses two-stage evaporation. The rear part of the screens of the furnace and the convective beam, located in the zone with a higher gas temperature, is introduced into the second stage of evaporation. The circuits of the second evaporation stage have an unheated downcomer system.

The contours of the side screens and the convective beam of the boiler DE-16-14GM-O (E-16-1.4GM), as well as the front screen of the boiler are closed directly to the drums. The contours of the rear screen of the boiler DE-16-14GM-O (E-16-1.4GM) are connected to the drum through intermediate collectors: the lower one is distributing (horizontal) and the upper one is collecting (inclined). The ends of the intermediate collectors on the side opposite to the drums are connected by an unheated recirculation pipe.

As primary separation devices, baffle shields and guide hoods installed in the upper drum are used, which ensure the supply of the steam-water mixture to the water level. A perforated sheet and a louvered separator are used as secondary separation devices.

In the DE-16-14GM-O (E-16-1.4GM) boiler, the superheaters are vertical, drained from two rows of pipes with a diameter of 51x2.5.

To burn fuel oil and natural gas, a GMP gas-oil burner is installed on the DE-16-14GM-O (E-16-1.4GM) boiler.

The main components of the burner are: the gas part, the vane apparatus for swirling air, the nozzle assembly with the main and backup steam-mechanical nozzles.

Boiler DE-16-14GM-O (E-16-1.4GM) is completed with the required number of fittings and instrumentation.

The transfer of the steam boiler DE-16-14GM-O (E-16-1.4GM) to the water-heating mode allows, in addition to increasing the productivity of boiler plants and reducing the cost of own needs associated with the operation of feed pumps, heat exchangers of network water and continuous blowdown equipment, as well as reducing the cost of water treatment, significantly reduce fuel consumption.

The average operating efficiency of the boiler unit used as a water heating unit increases by 2.0-2.5%.

Boiler DE-16-14GM-O (E-16-1.4GM) is delivered to the customer in one transportable unit (unit in sheathing and insulation with an installed burner; it is possible to have a built-in economizer) complete with instrumentation, fittings and fittings within the boiler, ladders and platforms, superheater (under additional agreement).

This page is found by the following queries: DE-16-14GM-O (E-16-1.4GM), DE-16-14GM-O, E-16-1.4GM, de 16-14gm-o, e 16- 1.4gm, de 16 14gmo o, e 16 1.4gm, de 16 14, e 16 1.4, boiler de 16 14, boiler e 16 1.4, de 14, e 1.4, de 16, e 16 1.4, boiler de 14, boiler 1.4, boiler de 16, boiler 16 1.4, de 16 14 de boiler de 16 14 boilers de 16 14 steam boiler de 16 14 steam boilers de 16 14 hot water boilers de 16 14 scheme of the boiler de 16 14 arrangement of the boiler de 16 14 automation de boiler de boilers de.