CN210560520U

CN210560520U - Blast furnace gas recycling device

Info

Publication number: CN210560520U
Application number: CN201921669055.6U
Authority: CN
Inventors: 尚红刚; 杨晓; 赵军军; 岐荣军
Original assignee: Shanxi Gaoyi Steel Co ltd
Current assignee: Shanxi Gaoyi Steel Co ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-05-19
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses a blast furnace gas recycle device relates to waste gas utilization technical field, specifically is a blast furnace gas recycle device, including the heat dissipation case, the inner wall fixedly connected with heat dissipation pipeline of heat dissipation case, the first pressure gauge of fixed surface of admission line, the first air-blower of other end fixedly connected with of admission line, the other end fixedly connected with exhaust duct of heat dissipation pipeline, exhaust duct's one end fixedly connected with gas washing pipe, the fixed surface of second air-blower gas vent is connected with the second pressure gauge. This blast furnace gas recycle device, the aquatic of heat dissipation case in the heat dissipation case blast furnace gas waste heat transfer, improve the temperature and make things convenient for people to use hot water, through the gas washing case, can get rid of impurity gas in the blast furnace gas, leave combustible gas, reduce the use of fuel, through the setting of pressure gauge and sealing washer, reached the effect that prevents the gas leakage polluted environment.

Description

Blast furnace gas recycling device

Technical Field

The utility model relates to a waste gas utilization technical field specifically is a blast furnace gas recycle device.

Background

The blast furnace gas is a byproduct generated in the blast furnace ironmaking process, the combustible component content in the main components of the blast furnace gas is about 20-30%, the heat value is low, and the dust content is high. Because blast furnace gas is the waste gas with the largest emission in metallurgical waste gas, besides being used as the self-use gas for direct combustion in metallurgical enterprises, a plurality of ways for recycling the blast furnace gas are developed, and in the ways, the common way is that the blast furnace gas residual pressure recovery turbine power generation device uses the preset gas pressure energy and gas sensible heat of the blast furnace to guide the gas into an expansion turbine to do work to the outside, and the turbine is connected with a power generator, and the turbine converts the blast furnace gas pressure energy and part of the heat energy into mechanical energy and then into electric energy to form the blast furnace gas top pressure recovery turbine power generation device. The blast furnace gas recovered by the residual pressure can also enter a gas and steam combined cycle to generate power by combustion.

In the blast furnace gas dust removal and waste heat recovery system disclosed in chinese utility model patent application publication CN204198772U, although the device has the functions of recovering waste heat and removing dust, the blast furnace gas dust removal and waste heat recovery system has the disadvantages that the combustible gas contained in the blast furnace gas cannot be fully used, the waste heat of the blast furnace gas is relatively troublesome to use, and the leakage condition of the blast furnace gas cannot be detected.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a blast furnace gas recycle device, which solves the problem of the prior art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a blast furnace gas recycling device comprises a heat dissipation box, wherein a heat dissipation pipeline is fixedly connected to the inner wall of the heat dissipation box, one end of the heat dissipation pipeline is fixedly connected with one end of an air inlet pipeline, a first pressure gauge is fixedly connected to the outer surface of the air inlet pipeline, a first air blower is fixedly connected to the other end of the air inlet pipeline, the first air blower is in threaded connection with a tool box through a bolt, an exhaust pipeline is fixedly connected to the other end of the heat dissipation pipeline, a gas washing pipe is fixedly connected to one end of the exhaust pipeline, a gas washing box is fixedly connected to a gas outlet of the gas washing pipe, a vent is formed in the inner wall of the gas washing box, a second air blower is fixedly connected to the inner portion of the vent, a drying box is fixedly connected to an exhaust end of the second air blower, a second pressure gauge is fixedly connected to the air, the bottom fixedly connected with drying cabinet of support, the inside of drying cabinet is provided with the heating wire.

Optionally, the bottom of the heat dissipation box is fixedly connected with a support frame, water is arranged inside the heat dissipation box, and the outer surface of the heat dissipation box is fixedly connected with a drainage pipeline.

Optionally, the outer fixed surface of the gas washing box is connected with a sewage pipeline, the outer fixed surface of the sewage pipeline is connected with a pipeline valve, and the inside of the gas washing box is provided with gas washing liquid.

Optionally, the distance between the lower surface of the air washing pipe and the inner bottom wall of the air washing box is 50mm, the air inlet end of the second air blower is inserted into the inner wall of the air washing box, and the position of the ventilation opening is higher than the position of the air washing liquid.

Optionally, the outer surface of the heat dissipation pipeline is fixedly connected with a protective shell, and the joints of the pipelines are provided with sealing rings.

Optionally, an air outlet is formed in the inner side wall of the drying box, and a conveying pipeline is fixedly connected to the inner wall of the air outlet.

Optionally, an electric heating wire is arranged inside the electric heating tube, the electric heating tube is made of glass, and the electric heating tube is a coiled tube.

(III) advantageous effects

The utility model provides a blast furnace gas recycle device possesses following beneficial effect:

1. this blast furnace gas recycle device, setting through the heat dissipation case, make this blast furnace gas recycle device possess the effect of retrieving the waste heat, the high heat dissipation case passes through the heat dissipation pipeline with waste heat transfer to the aquatic of heat dissipation case in the blast furnace gas, the temperature of improvement water makes things convenient for people to use hot water, the effect of giving other people convenience has been reached, and the waste heat utilization of blast furnace gas is comparatively simple, and is convenient, set up through the cooperation of gas washing case and gas washing pipe, the in-process that uses not only can carry out wet dust removal to blast furnace gas, can also get rid of other gaseous impurities such as carbon dioxide in the blast furnace gas, leave carbon monoxide, hydrogen, combustible gas such as methane, thereby the effect of purification has been played, finally the gas that will purify is guided into the blast furnace again, reduce the use of fuel.

2. This blast furnace gas recycle device through the setting of two pressure gauges, can compare according to the numerical value of two pressure gauges, detects whether the pipeline leaks gas, makes this blast furnace gas recycle device possess the effect whether the detection blast furnace gas reveals, has reached the sealed effect through the setting of sealing washer and has prevented the effect of gas leakage pollution environment, but also reaches the effect that prevents the staff and poisoned because of the gas that the gas leakage produced.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is an enlarged schematic view of part A of the present invention;

fig. 4 is a schematic view of the three-dimensional structure of the drainage pipeline of the present invention.

In the figure: 1. a heat dissipation box; 2. a heat dissipation pipe; 3. an air intake duct; 4. a first pressure gauge; 5. a first blower; 6. a tool box; 7. an exhaust duct; 8. washing the trachea; 9. a gas washing tank; 10. a second blower; 11. a drying oven; 12. a second pressure gauge; 13. a support; 14. an electric heating tube; 15. a support frame; 16. a water discharge pipeline; 17. a blowdown line; 18. a pipeline valve; 19. a protective shell; 20, sealing rings; 21 transporting the pipeline.

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.

Referring to fig. 1 to 4, the present invention provides a technical solution: a blast furnace gas recycling device comprises a heat dissipation box 1, a support frame 15 is fixedly connected to the bottom of the heat dissipation box 1, water is arranged inside the heat dissipation box 1, a drainage pipeline 16 is fixedly connected to the outer surface of the heat dissipation box 1, a heat dissipation pipeline 2 is fixedly connected to the inner wall of the heat dissipation box 1, a protective shell 19 is fixedly connected to the outer surface of the heat dissipation pipeline 2, sealing rings 20 are arranged at the joints of the pipelines, one end of the heat dissipation pipeline 2 is fixedly connected with one end of an air inlet pipeline 3, a first pressure gauge 4 is fixedly connected to the outer surface of the air inlet pipeline 3, a first air blower 5 is fixedly connected to the other end of the air inlet pipeline 3, the first air blower 5 is in threaded connection with a tool box 6 through bolts, an exhaust pipeline 7 is fixedly connected to the other end of the heat dissipation pipeline 3, a gas washing pipe 8 is fixedly connected to one end of the, the air inlet end of the second air blower 10 is inserted into the inner wall of the air washing box 9, the position of the vent is higher than the position of the air washing liquid, the air outlet of the air washing pipe 8 is fixedly connected with the air washing box 9, the outer surface of the air washing box 9 is fixedly connected with a sewage pipeline 17, the outer surface of the sewage pipeline 17 is fixedly connected with a pipeline valve 18, the air washing liquid is arranged inside the air washing box 9, the vent is formed in the inner wall of the air washing box 9, the second air blower 10 is fixedly connected inside the vent, the air outlet end of the second air blower 10 is fixedly connected with the drying box 11, the air inlet end of the second air blower 10 is fixedly connected with the second pressure gauge 12, the bottom of the second air blower 10 is fixedly connected with the support 13, the drying box 11 is fixedly connected at the bottom of the support 13, the electric heating pipe 14 is arranged inside the drying box 11, the.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

During the use, the blast furnace gas of high temperature gets into heat dissipation pipeline 2 through first air-blower 5, the blast furnace gas gives the water in heat dissipation case 1 with waste heat transfer in heat dissipation pipeline 2, discharge the gas vent of heat dissipation pipeline 2 with refrigerated coal gas, coal gas removes dust and edulcoration through scrubber pipe 8 and scrubber case 9 and handles, the impurity that easily dissolves in the scrubber liquid such as carbon dioxide wherein and dust is filtered away, remaining carbon monoxide, combustible gas such as methane, hydrogen gets into drying cabinet 11 through the second air-blower, the heat of heating wire gives off the outside through electrothermal tube 14 and carries out the drying to gas, finally use in leading-in blast furnace again by transportation pipeline 21, the pressure numerical value at pipeline both ends can be monitored to first pressure gauge and second pressure gauge, whether be used for detecting the pipeline gas leakage, the sealing washer can prevent the pipeline gas leakage.

The utility model discloses a theory of operation and beneficial effect: the blast furnace gas recycling device has the effect of recycling waste heat through the arrangement of the heat dissipation box 1, the heat dissipation box transfers the waste heat in the blast furnace gas into the water of the heat dissipation box 1 through the heat dissipation pipeline 2, the temperature of the water is improved, people can conveniently use hot water, and the effect of bringing convenience to people is achieved, through the matching arrangement of the gas washing box 9 and the gas washing pipe 8, the blast furnace gas can be subjected to wet dust removal treatment in the using process, other impurity gases such as carbon dioxide and the like in the blast furnace gas can be removed, combustible gases such as carbon monoxide, hydrogen, methane and the like are left, so that the purifying effect is achieved, the purified gas is finally reintroduced into the blast furnace, the use of fuel is reduced, through the arrangement of the two pressure gauges, the comparison can be carried out according to the difference of the numerical values of the two pressure gauges, and whether the pipeline leaks gas or, the blast furnace gas recycling device has the effect of detecting whether the blast furnace gas is leaked or not, achieves the effect of preventing the gas from leaking to pollute the environment by arranging the sealing ring, and also achieves the effect of preventing the gas poisoning of workers caused by the gas leakage.

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 blast furnace gas recycle device, includes heat dissipation case (1), its characterized in that: the inner wall of the heat dissipation box (1) is fixedly connected with a heat dissipation pipeline (2), one end of the heat dissipation pipeline (2) is fixedly connected with one end of an air inlet pipeline (3), the outer surface of the air inlet pipeline (3) is fixedly connected with a first pressure gauge (4), the other end of the air inlet pipeline (3) is fixedly connected with a first air blower (5), the first air blower (5) is in threaded connection with a tool box (6) through a bolt, the other end of the heat dissipation pipeline (2) is fixedly connected with an exhaust pipeline (7), one end of the exhaust pipeline (7) is fixedly connected with a gas washing pipe (8), a gas exhaust port of the gas washing pipe (8) is fixedly connected with a gas washing box (9), a vent is formed in the inner wall of the gas washing box (9), a second air blower (10) is fixedly connected with the inside of the vent, and a drying box (11) is fixedly connected with the, the air inlet end of the second air blower (10) is fixedly connected with a second pressure gauge (12), the bottom of the second air blower (10) is fixedly connected with a support (13), the bottom of the support (13) is fixedly connected with a drying box (11), and an electric heating pipe (14) is arranged inside the drying box (11).

2. The blast furnace gas recycling apparatus according to claim 1, wherein: the bottom fixedly connected with support frame (15) of heat dissipation case (1), the inside of heat dissipation case (1) is provided with water, the surface fixed connection of heat dissipation case (1) has drainage pipe (16).

3. The blast furnace gas recycling apparatus according to claim 1, wherein: the outer fixed surface of gas washing case (9) is connected with sewage pipes (17), the outer fixed surface of sewage pipes (17) is connected with pipeline valve (18), the inside of gas washing case (9) is provided with the gas washing liquid.

4. The blast furnace gas recycling apparatus according to claim 1, wherein: the distance between the lower surface of the air washing pipe (8) and the inner bottom wall of the air washing box (9) is 50mm, the air inlet end of the second air blower (10) is inserted into the inner wall of the air washing box (9), and the position of the ventilation opening is higher than the position of the air washing liquid.

5. The blast furnace gas recycling apparatus according to claim 1, wherein: the outer surface of the heat dissipation pipeline (2) is fixedly connected with a protective shell (19), and sealing rings (20) are arranged at the joints of the pipelines.

6. The blast furnace gas recycling apparatus according to claim 1, wherein: the inside wall of drying cabinet (11) has seted up the gas vent, the inner wall fixedly connected with transport pipe way (21) of gas vent.

7. The blast furnace gas recycling apparatus according to claim 1, wherein: the electric heating tube (14) is internally provided with an electric heating wire, the electric heating tube (14) is made of glass, and the electric heating tube (14) is a coiled tube.