CN213334931U

CN213334931U - Novel combustion chamber structure of flue gas furnace

Info

Publication number: CN213334931U
Application number: CN202022244791.6U
Authority: CN
Inventors: 陈娥; 张国信; 庄财练
Original assignee: Fujian Sanbao Steel Co Ltd
Current assignee: Fujian Sanbao Steel Co Ltd
Priority date: 2020-10-11
Filing date: 2020-10-11
Publication date: 2021-06-01
Anticipated expiration: 2030-10-11

Abstract

A novel combustion chamber structure of a flue gas furnace comprises a furnace body, a heat-resistant inner cylinder is arranged in the furnace body, a combustion cavity and a mixing chamber are arranged in the heat-resistant inner cylinder, a middle cylinder is arranged between the outer wall of the combustion cavity and the inner wall of the furnace body, a first heat-insulating layer is arranged between the middle cylinder and the outer wall of the combustion cavity, a second heat insulation layer is arranged between the outer wall of the mixing chamber and the inner wall of the furnace body, a gas channel is arranged between the middle cylinder and the furnace body, a heat accumulator is arranged in the middle of the combustion cavity, a base is arranged at the bottom of the furnace body, a plurality of rollers are arranged at the bottom of the base, the heat-resistant inner cylinder is made of high-strength materials and can be used for a long time, and need not frequent maintenance, the heat accumulator can absorb the heat in the combustion chamber, and flame extinguishes in the combustion chamber, and the coal gas can be lighted to the heat accumulator, and the gyro wheel can let the furnace body move to suitable position, reduces the heat in the flue gas transportation and gives off.

Description

Novel combustion chamber structure of flue gas furnace

Technical Field

The utility model relates to a flue gas furnace technical field specifically is a novel flue gas furnace combustion chamber structure.

Background

When iron and steel enterprises in China use the iron-making blast furnace for production, coal injection is carried out on the blast furnace, cost and safety are considered, mixed coal powder mixed by anthracite and bituminous coal is often used, the safety of the anthracite is high, but the cost is high, the cost of the bituminous coal is low, the cost performance is high, and therefore the anthracite and the bituminous coal can be mixed. In order to improve the safety of mixed pulverized coal, pulverized coal must be baked, the volatility and the oxygen content of the pulverized coal are reduced, the combustion chamber of the existing flue gas furnace for drying pulverized coal is weak in heat storage capacity, flames inside the combustion chamber are easy to extinguish due to accidents and need to be ignited again, a furnace chamber is generally built by adopting refractory materials inside the flue gas furnace, and the heat preservation and heat insulation effects can be achieved, so that the furnace chamber is large in thickness and troublesome to maintain, a conical mixing chamber is generally adopted in the mixing chamber of the flue gas furnace, an inner wall made of the refractory materials is arranged inside the mixing chamber, the existing conical mixing chamber is low in bearing limit temperature, the flue gas temperature is easy to reduce to be below the required temperature in the transportation process, the existing flue gas furnace is difficult to move, and the heat consumption in the flue.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel flue gas furnace combustion chamber structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a novel combustion chamber structure of a flue gas furnace comprises a furnace body, a heat-resistant inner cylinder inside the furnace body, a combustion chamber and a mixing chamber arranged in the heat-resistant inner cylinder, burners or flue gas outlets arranged at two ends of the furnace body respectively, the burners and the interior of the combustion chamber are communicated, the flue gas outlet is communicated with the interior of the mixing chamber, the shape of the mixing chamber is the same as that of the furnace body, a middle cylinder is arranged between the outer wall of the combustion chamber and the inner wall of the furnace body, a first heat-insulating layer is arranged between the middle cylinder and the outer wall of the combustion chamber, a second heat-insulating layer is arranged between the outer wall of the mixing chamber and the inner wall of the furnace body, a gas channel is arranged between the middle cylinder and the furnace body, the gas channel is communicated with the gas inlet end of the furnace body or the interior of the mixing chamber, the gas inlet end of the furnace, the bottom of furnace body is provided with the base, the bottom of base is provided with a plurality of gyro wheel, be provided with a plurality of threaded rod on the base, the top of threaded rod is provided with rotatory piece, the outside of rotatory piece is provided with anti-skidding line, the bottom of threaded rod is provided with the clutch blocks, clutch blocks and threaded rod threaded connection, threaded rod and base threaded connection.

As a further aspect of the present invention: and a fire-proof wall is arranged at one end of the combustion cavity, which is far away from the burner tip.

As a further aspect of the present invention: the heat accumulator or the fireproof wall is provided with a plurality of heat accumulation checker bricks, the heat accumulation checker bricks are provided with a plurality of through holes, and a plurality of ventilation holes are formed among the heat accumulation checker bricks.

As a further aspect of the present invention: and an air inlet and a coal gas inlet are arranged on the burner.

As a further aspect of the present invention: the one end of mixing chamber is provided with diffuses a section of thick bamboo, diffuse the one end of a section of thick bamboo and the inside UNICOM setting of mixing chamber, the other end and external intercommunication setting.

As a further aspect of the present invention: the diffusing cylinder and the smoke outlet are both provided with sealing covers, and the sealing covers are connected with the diffusing cylinder or the smoke outlet through bolts.

As a further aspect of the present invention: one end of the furnace body close to the combustion nozzle is provided with a lighter, and the top end of the lighter penetrates through the furnace body, the middle cylinder and the heat-resistant inner cylinder to extend into the combustion cavity.

As a further aspect of the present invention: a support frame is arranged between the furnace body and the base.

As a further aspect of the present invention: the heat-resistant inner cylinder is preferably made of heat-resistant stainless steel.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses in, heat-resisting inner tube is made with heat-resisting stainless steel, high strength, heat-resisting inner tube than ordinary material is made is durable, first insulating layer can be isolated with the heat of combustion chamber inside, the gas of circulation can be taken a part of heat to the mixing chamber among the gas passage, can suitably reduce the thickness of first insulating layer, the regenerator falls into two parts with the combustion chamber, and the regenerator can keep a part of heat, it is undulant because coal gas or air input produce when the combustion chamber is inside, lead to flame to extinguish, can let coal gas ignite again, the base of taking the gyro wheel can let the furnace body remove, remove suitable place, can reduce the thermal loss of flue gas, the pneumatic cylinder can the pedestal fixation in a place, be not removing.

Drawings

FIG. 1 is a schematic structural view of a combustion chamber structure of a novel flue gas furnace of the present invention;

FIG. 2 is a schematic sectional view of the furnace body of the present invention;

fig. 3 is a schematic structural diagram of the heat accumulator of the present invention.

In the figure: 1. a furnace body; 2. a heat-resistant inner barrel; 3. a combustion chamber; 4. a mixing chamber; 5. a burner tip; 6. a flue gas outlet; 7. a middle cylinder; 8. a first insulating layer; 9. a second thermal insulation layer; 10. a gas channel; 11. a heat accumulator; 12. a base; 13. a roller; 14. a threaded rod; 15. rotating the block; 16. a friction block; 17. a firewall; 18. a heat-accumulating checker brick; 19. a through hole; 20. a vent hole; 21. an air inlet; 22. a gas inlet; 23. a diffusing cylinder; 24. sealing the cover; 25. a igniter; 26. a support frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to fig. 3, in the embodiment of the present invention:

a novel combustion chamber structure of a flue gas furnace comprises a furnace body 1, a heat-resistant inner cylinder 2 inside the furnace body 1, a combustion chamber 3 and a mixing chamber 4 arranged in the heat-resistant inner cylinder 2, combustion nozzles 5 or flue gas outlets 6 respectively arranged at two ends of the furnace body 1, the combustion nozzles 5 and the combustion chamber 3 are communicated with each other, the flue gas outlets 6 and the mixing chamber 4 are communicated with each other, the mixing chamber 4 is the same as the furnace body 1 in shape, a middle cylinder 7 is arranged between the outer wall of the combustion chamber 3 and the inner wall of the furnace body 1, a first heat-insulating layer 8 is arranged between the middle cylinder 7 and the outer wall of the combustion chamber 3, a second heat-insulating layer 9 is arranged between the outer wall of the mixing chamber 4 and the inner wall of the furnace body 1, a gas channel 10 is arranged between the middle cylinder 7 and the furnace body 1, the gas channel 10 is communicated with the gas inlet end of the furnace body 1 or the inside of the mixing chamber 4, the gas, be provided with heat accumulator 11 in the middle of the combustion chamber 3, the bottom of furnace body 1 is provided with base 12, the bottom of base 12 is provided with a plurality of gyro wheel 13, be provided with a plurality of threaded rod 14 on the base 12, the top of threaded rod 14 is provided with rotatory piece 15, the outside of rotatory piece 15 is provided with anti-skidding line, the bottom of threaded rod 14 is provided with clutch block 16, clutch block 16 and threaded rod 14 threaded connection, threaded rod 14 and base 12 threaded connection.

In the embodiment of the present invention: and a firewall 17 is arranged at one end of the combustion cavity 3 far away from the burner tip 5. The fire wall 17 prevents the flame of the combustion chamber 3 from entering the mixing chamber 4 and igniting the inside of the mixing chamber 4.

In the embodiment of the present invention: the heat accumulator 11 or the firewall 17 is provided with a plurality of heat accumulation checker bricks 18, the heat accumulation checker bricks 18 are provided with a plurality of through holes 19, and a plurality of vent holes 20 are arranged between the heat accumulation checker bricks 18. The heat accumulating checker bricks 18 have excellent heat accumulating and insulating properties, and the vent holes 20 allow high-temperature gas to pass therethrough.

In the embodiment of the present invention: the burner tip 5 is provided with an air inlet 21 and a gas inlet 22. The air inlet 21 and the gas inlet 22 are for feeding gas and air to the interior of the furnace body 1.

In the embodiment of the present invention: one end of the mixing chamber 4 is provided with a diffusing cylinder 23, one end of the diffusing cylinder 23 is communicated with the inside of the mixing chamber 4, and the other end of the diffusing cylinder is communicated with the outside. The diffusing cylinder 23 can ignite and release the high-temperature flue gas when the high-temperature flue gas is not needed, so that the carbon monoxide in the flue gas is prevented from polluting the air.

In the embodiment of the present invention: the diffusing cylinder 23 and the smoke outlet 6 are both provided with a sealing cover 24, and the sealing cover 24 is connected with the diffusing cylinder 23 or the smoke outlet 6 through bolts. The cover 24 can make the smoke only flow out from the smoke outlet 6 or the diffusing cylinder 23, so as to avoid the smoke polluting the air.

In the embodiment of the present invention: one end of the furnace body 1 close to the burner tip 5 is provided with an igniter 25, and the top end of the igniter 25 penetrates through the furnace body 1, the middle cylinder 7 and the heat-resistant inner cylinder 2 and extends into the combustion cavity 3. The igniter 25 is preferably an electric igniter which can ignite the gas inside the furnace body 1 at a remote place.

In the embodiment of the present invention: a support frame 26 is arranged between the furnace body 1 and the base 12. The supporting frame 26 can fix the furnace body 1 on the base 12.

In the embodiment of the present invention: the heat-resistant inner tube 2 is preferably made of heat-resistant stainless steel. The heat-resistant stainless steel material has sufficient strength and little damage at high temperature, and can be maintained for a long time.

The utility model discloses a theory of operation is: when in use, the air inlet 21 and the coal gas inlet 22 are respectively connected with a fan or a coal gas source, air or coal gas is conveyed to the inside of the combustion chamber 3 through the air inlet 21 or the coal gas inlet 22, the air and the coal gas are mixed and then ignited by using the igniter 25, the combusted coal gas heats the air, then high-temperature gas enters the other side of the heat accumulator 11 from the vent hole 20 formed by the plurality of heat accumulation checker bricks 18 on the heat accumulator 11, the heat accumulator 11 can keep quite high temperature, when flame in the combustion chamber 3 is extinguished due to air input or coal gas input fluctuation, the heat of the heat accumulator 11 can cause the coal gas to be re-ignited, the high-temperature air passes through the firewall 17 and enters the mixing chamber 4, low-temperature waste gas enters the gas channel 10 from the air inlet end of the furnace body 1, the flowing low-temperature waste gas can take away the heat on the first heat insulation layer 8, and then the heated waste gas is, the required high-temperature flue gas is formed, because the low-temperature waste gas can take away the heat on the first heat-insulating layer 8, the thickness of the first heat-insulating layer 8 is smaller, the cost is saved, the heat-resisting inner cylinder 2 is made of a high-strength refractory material, preferably standard heat-resisting stainless steel is used, the heat-resisting stainless steel is high-temperature-resistant and has enough strength to be used for a long time without being damaged, the furnace body 1 is arranged on the base 12 through a support frame 26, the roller 13 is arranged on the base 12, the furnace body 1 is convenient to move, the position of the furnace body 1 is moved to a place where a high-temperature gas drying agent is required to be used, the heat of the high-temperature flue gas can not be dissipated too much in the short-time transportation process, the temperature of the high-temperature flue gas in the mixing chamber 4 does not need to be too much higher than the required temperature, when the furnace body 1, finally, the friction block 16 is contacted with the ground, and the friction block 16 makes the furnace body 1 still through friction force.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a novel flue gas stove combustion chamber structure, includes furnace body (1), its characterized in that: the furnace comprises a furnace body (1), a heat-resisting inner barrel (2) arranged in the furnace body (1), a combustion chamber (3) and a mixing chamber (4) arranged in the heat-resisting inner barrel (2), burners (5) or flue gas outlets (6) arranged at two ends of the furnace body (1) respectively, the burners (5) and the combustion chamber (3) are communicated with each other, the flue gas outlets (6) and the mixing chamber (4) are communicated with each other, the mixing chamber (4) is identical to the furnace body (1), a middle barrel (7) is arranged between the outer wall of the combustion chamber (3) and the inner wall of the furnace body (1), a first heat-insulating layer (8) is arranged between the middle barrel (7) and the outer wall of the combustion chamber (3), a second heat-insulating layer (9) is arranged between the outer wall of the mixing chamber (4) and the inner wall of the furnace body (1), and a gas channel (10) is arranged between, the inside intercommunication of inlet end or mixing chamber (4) of gas passage (10) and furnace body (1), the inlet end setting of furnace body (1) is on the side that is close to burner tip (5) one end, combustion chamber (3) middle heat accumulator (11) that is provided with, the bottom of furnace body (1) is provided with base (12), the bottom of base (12) is provided with a plurality of gyro wheel (13), be provided with a plurality of threaded rod (14) on base (12), the top of threaded rod (14) is provided with rotatory piece (15), the outside of rotatory piece (15) is provided with anti-skidding line, the bottom of threaded rod (14) is provided with clutch blocks (16), clutch blocks (16) and threaded rod (14) threaded connection, threaded rod (14) and base (12) threaded connection.

2. The new combustion chamber structure of flue gas furnace as claimed in claim 1, wherein: one end of the combustion cavity (3) far away from the burner tip (5) is provided with a firewall (17).

3. The new combustion chamber structure of flue gas furnace as claimed in claim 2, wherein: the heat accumulator (11) or the firewall (17) is provided with a plurality of heat accumulation checker bricks (18), the heat accumulation checker bricks (18) are provided with a plurality of through holes (19), and a plurality of ventilation holes (20) are arranged between the heat accumulation checker bricks (18).

4. The new combustion chamber structure of flue gas furnace as claimed in claim 1, wherein: the burner nozzle (5) is provided with an air inlet (21) and a coal gas inlet (22).

5. The new combustion chamber structure of flue gas furnace as claimed in claim 1, wherein: one end of the mixing chamber (4) is provided with a diffusing cylinder (23), one end of the diffusing cylinder (23) is communicated with the inside of the mixing chamber (4), and the other end of the diffusing cylinder is communicated with the outside.

6. The new combustion chamber structure of flue gas furnace as claimed in claim 5, wherein: the diffusing cylinder (23) and the smoke outlet (6) are both provided with a sealing cover (24), and the sealing cover (24) is connected with the diffusing cylinder (23) or the smoke outlet (6) through bolts.

7. The new combustion chamber structure of flue gas furnace as claimed in claim 1, wherein: one end of the furnace body (1) close to the burner nozzle (5) is provided with an igniter (25), and the top end of the igniter (25) penetrates through the furnace body (1), the middle cylinder (7) and the heat-resistant inner cylinder (2) to extend into the combustion cavity (3).

8. The new combustion chamber structure of flue gas furnace as claimed in claim 1, wherein: a support frame (26) is arranged between the furnace body (1) and the base (12).