CN208457946U - Set boiler structure in burner bottom - Google Patents

Abstract

The utility model relates to a kind of burner bottoms to set boiler structure, including combustion chamber, bottom of combustion chamber is provided with burner, and combustion chamber surrounding and partition wall are provided with water-cooling wall, water-cooling wall lower header is connected below water-cooling wall, water-cooling wall lower header is connect by down-comer with drum, and drum connects boiler feed pipe, and boiler feed pipe connects oxygen-eliminating device, drum is set to combustion chamber upper side, tail vertical well is arranged in drum side, and exhanst gas outlet is arranged in tail vertical well lower end, and oxygen-eliminating device is located at tail vertical well lower end side.Using the utility model boiler structure, combustion chamber heating surface is not easy to be contaminated, while being able to satisfy burner flame size to the needs of combustion chamber, so that fuel combustion is abundant.

Description

Set boiler structure in burner bottom

Technical field

The utility model relates to a kind of burner bottoms to set boiler structure, especially a kind of combustion gas for multiple gases fuel Boiler.

Background technique

Due to the continuous propulsion of national energy-saving environmental protection policy, the waste gas and waste liquid that various chemical companies generate, the not only wave of abandoning Take the energy, more pollution environment.This requires boiler manfacturing producers to design boiler, is equipped with suitable burner, waste gas burning is produced The raw energy is used.The arrangement of traditional burner for gas boiler is arranged horizontally, be arranged in combustion chamber front wall, Side wall or rear wall, are also arranged in combustion chamber quadrangle.If conventional fuel (such as natural gas, blast furnace gas, coke-stove gas), water The burner that plain cloth is set is equipped with suitable cloth wind structure can be by its completely burned, but if the size in boiler room place and combustion chamber The size of size, horizontally disposed burner may not be suitable.Because waste gas fuels are complex in composition, wherein have combustible composition and Incombustible composition, combustibles are sufficiently atomized under wind action of burning, catch fire rapidly, complete combustion process；It is non-combustible Composition sprays into combustion chamber under wind action of burning and spreads around, splashes on the heating surface of combustion chamber, pollute heating surface, with when Between passage, combustion chamber heat-transfer effect decline, influence boiler output.The serious heating surface tube coking of situation, leads to booster.

Summary of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art, a kind of burner is provided and is placed in furnace bottom Boiler structure, the thermal energy that the waste gas burning that enterprise can be made full use of self-produced generates, prolonged boiler service life improve boiler hot Efficiency.

According to technical solution provided by the utility model: boiler structure, including combustion chamber, the combustion are set in a kind of burner bottom It burns room bottom and is provided with burner, the combustion chamber surrounding and partition wall are provided with water-cooling wall, connect water cooling below the water-cooling wall Wall lower header, the water-cooling wall lower header are connect by down-comer with drum, and the drum connects boiler feed pipe, the boiler Feed pipe connects oxygen-eliminating device, and the drum is set to the combustion chamber upper side, and tail vertical well, institute is arranged in the drum side Tail vertical well lower end setting exhanst gas outlet is stated, the oxygen-eliminating device is located at tail vertical well lower end side.

The drum is double drums as a further improvement of the utility model, including upper drum, the upper drum pass through Convection bank connects the lower drum being disposed below, and the combustor exit is provided with crust block pipe, and the convection bank is located at institute State the side of crust block pipe.

Saver device, economizer are provided in the tail vertical well as a further improvement of the utility model, And air preheater, the saver device include economizer upper collecting chamber, economizer, economizer lower header；The energy-saving appliance dress It sets including energy-saving appliance upper collecting chamber, energy-saving appliance, energy-saving appliance lower header；The saver device connects the economizer, it is described Economizer upper collecting chamber connects the boiler feed pipe, and the energy-saving appliance upper collecting chamber described in the connection of energy-saving appliance communicating pipe by removing Oxygen device.

The burner is vertically installed in the bottom of the combustion chamber as a further improvement of the utility model,.

Heat insulation wall is equipped on the outside of the water-cooling wall as a further improvement of the utility model,.

The upper drum and the lower drum are laterally setting as a further improvement of the utility model,.

The utility model compared with prior art, has the advantages that

1, the utility model is set using burner bottom, and flexible arrangement does not occupy ground exceptional space, convenient to overhaul；Simultaneously Flame is not burned on water-cooling wall directly when can fully ensure that boiler operatiopn.

2, boiler using upper lower drum convection bank adds the arrangement form of back-end surfaces (in vertical shaft) in the utility model, Ensure that safe water circulation is reliable.

3, boiler tail vertical shaft is disposed with air preheater and can effectively avoid the solidifying of the too low appearance of environment temperature in the utility model Water influences burner performance.

4, boiler tail vertical shaft is disposed with energy-saving appliance in the utility model, can make full use of fume afterheat, improves Thermal Synthetic Efficiency, while boiler feedwater enters back into oxygen-eliminating device after energy-saving appliance heats can be reduced the air consumption of energy-saving appliance.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Specific embodiment

Specific embodiment of the present utility model is further described with reference to the accompanying drawing.

In Fig. 1, including burner 1, combustion chamber 2, crust block pipe 3, upper drum 4, convection bank 5, lower drum 6, economizer 7, Economizer upper collecting chamber 8, economizer lower header 9, air preheater 10, exhanst gas outlet 11, water-cooling wall lower header 12, energy-saving appliance 13, Energy-saving appliance upper collecting chamber 14, energy-saving appliance lower header 15, water-cooling wall 16, tail vertical well 17, down-comer 18, boiler feed pipe 19, energy conservation Device communicating pipe 20, oxygen-eliminating device 21 etc..

As shown in Figure 1, the utility model is that boiler structure, including combustion chamber 2,2 bottom of combustion chamber are set in a kind of burner bottom It is arranged vertically burner 1.The outlet of combustion chamber is crust block pipe 3, and convection bank 5, convection bank 5 is arranged in the exit of crust block pipe 3 Equipped with more, other than some convection banks 5 that can be visually seen in Fig. 1, also arrange from Fig. 1 perpendicular to paper direction equipped with more Root convection bank 5.The sealing connection of tail vertical well 17 being arranged on rear side of convection bank 5, to prevent the flue gas leakage of heat.Tail vertical well 17 end is equipped with exhanst gas outlet 11, and the lower end of tail vertical well 17 is located in 11 this example of exhanst gas outlet.The top of convection bank 5 and Laterally setting upper drum 4 and lower drum 6, upper drum 4 are connected with lower drum 6 by convection bank 5 respectively for lower section.In Fig. 1, on Drum 4 and lower drum 6 are all horizontal along the horizontal direction perpendicular to paper.In the other embodiments of the utility model, upper pot Double barrel structures that cylinder 4 and lower drum 6 and convection bank 5 form can use single drum and structure of boiler barrel substitution.

The surrounding (including front wall, both walls, rear wall) and partition wall of combustion chamber 2 arrange water-cooling wall 16, have inside water-cooling wall 16 There is the water cooled pipeline of comparatively dense.Water-cooling wall lower header 12 is connect by down-comer 18 with upper drum 4, the upper end water outlet of water-cooling wall 16 Mouth is connect with upper drum 4.Upper drum 4 connects feed pipe 19.

Burner 1 is passed through oil or gaseous fuel and air burns；Being passed through by feed pipe 19 to boiler needs to heat Water.Flue gas is discharged by tail vertical well 17 from exhanst gas outlet 11.

In order to energy saving, water economizer 7 is equipped in tail vertical well 17, it can be with containing intensive pipeline in economizer 7 Fully absorb the heat of flue gas in tail vertical well 17.Economizer upper collecting chamber 8 connects upper drum 4, feed pipe 19 by feed pipe 19 It is laid in tail vertical well 17, economizer lower header 9 is used as boiler feed water mouth.After cold water enters the preheating of economizer 7, into upper pot Cylinder 4, the heat cycles in upper drum 4, convection bank 5 and lower drum 6, a part of water also carries out upper drum 4- down-comer 18- water The circulation of cold wall lower header 12- water-cooling wall 16- upper drum 4.

Air preheater 10 is installed in the bottom of tail vertical well 17, and the import of air preheater 10 is used to input fresh air, The outlet of air preheater 10 connects burner 1 by air inlet pipe.In Fig. 1, air inlet pipe is not drawn, air inlet pipe is usually to lay In 2 periphery of combustion chamber, it is connected to burner 1 around combustion chamber 2, is illustrated hereby.

It is disposed with energy-saving appliance 13 in the outlet of air preheater outlet 10, energy-saving appliance lower header 15 connects the total water supply of boiler, section Energy device 13 can further absorb flue gas heat containing intensive pipeline.Energy-saving appliance upper collecting chamber 14 is connected by energy-saving appliance communicating pipe 20 Connect oxygen-eliminating device 21, oxygen-eliminating device 21 removes the oxygen and other gases for being dissolved in water, prevent and reduce water pipe in boiler, economizer and The corrosion of other auxiliary devices.Oxygen-eliminating device 21 send treated boiler feeding water to economizer lower header 9, in Fig. 1, does not draw Connecting pipe out illustrates hereby.

The installment work process of the utility model is as follows: boiler feeds water and injects from energy-saving appliance lower header 15, by energy conservation Device 13, which absorbs, enters oxygen-eliminating device 21, oxygen-eliminating device 21 from energy-saving appliance upper collecting chamber 14 by energy-saving appliance communicating pipe 20 after flue gas heat heats By treated, boiler feeding water is sent to economizer lower header 9, flows into economizer upper collecting chamber 8 by the heating of economizer 7, then Boiler feed water from economizer upper collecting chamber 8 by boiler feed pipe 19 flow into upper drum 4, upper drum 4, convection bank 5 and under Heat cycles in drum 6, a part of water also carry out upper drum 4- down-comer 18- water-cooling wall lower header 12- water-cooling wall 16- upper drum 4 circulation.Finally, boiler feeding water is heated is expelled to steam turbine workmanship from upper drum 4 as vapor.

The boiler structure pattern of the utility model is double-barrel transverse, room combustion gas-steam boiler, and endless form is nature Circulation.Bottom of combustion chamber new structure is placed in using this burner, more previous combustor level arranges traditional structure, boiler Combustion chamber heating surface is not easy to be contaminated, and fuel combustion is abundant, and heating surface arrangement is abundant, saves boiler room place, improves enterprise Economic benefit.

Claims (6)

1. boiler structure, including combustion chamber (2) are set in a kind of burner bottom, it is characterised in that: combustion chamber (2) bottom is provided with Burner (1), combustion chamber (2) surrounding and partition wall are provided with water-cooling wall (16), and water cooling is connected below the water-cooling wall (16) Wall lower header (12), the water-cooling wall lower header (12) are connect by down-comer (18) with drum, and the drum connection boiler is given Water pipe (19), the boiler feed pipe (19) connect oxygen-eliminating device (21), and the drum is set to the combustion chamber (2) upper side Tail vertical well (17) are arranged in face, the drum side, and exhanst gas outlet (11) are arranged in tail vertical well (17) lower end, the deoxygenation Device (21) is located at the tail vertical well (17) lower end side.

2. boiler structure is set at burner bottom as described in claim 1, it is characterised in that: the drum is double drums, including upper Drum (4), the upper drum (4) connect the lower drum (6) being disposed below by convection bank (5), and the combustion chamber (2) goes out Mouth is provided with crust block pipe (3), and the convection bank (5) is located at the side of the crust block pipe (3).

3. boiler structure is set at burner bottom as claimed in claim 1 or 2, it is characterised in that: set in the tail vertical well (17) It is equipped with saver device, economizer and air preheater 10, the saver device includes economizer upper collecting chamber (8), saves Coal device (7), economizer lower header (9)；The economizer includes energy-saving appliance upper collecting chamber (14), energy-saving appliance (13), energy-saving appliance Lower header (15)；The saver device connects the economizer, and the economizer upper collecting chamber (8) connects the boiler and gives Water pipe (19), the energy-saving appliance upper collecting chamber (14) connect the oxygen-eliminating device (21) by energy-saving appliance communicating pipe (20).

4. boiler structure is set at burner bottom as described in claim 1, it is characterised in that: the burner (1) is vertically installed in The bottom of the combustion chamber (2).

5. boiler structure is set at burner bottom as described in claim 1, it is characterised in that: be equipped with and protect on the outside of the water-cooling wall (16) Wen Bi.

6. boiler structure is set at burner bottom as claimed in claim 2, it is characterised in that: the upper drum (4) and described cook Cylinder (6) is laterally setting.