CN216129626U

CN216129626U - Flue gas recovery and purification device for steelmaking converter

Info

Publication number: CN216129626U
Application number: CN202122004259.1U
Authority: CN
Inventors: 齐进刚; 孙志丽; 王少博; 卢素景; 焦梦卓
Original assignee: Hebei Jingye Medium Plate Co Ltd
Current assignee: Hebei Jingye Medium Plate Co Ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-03-25
Anticipated expiration: 2031-08-24

Abstract

The utility model discloses a flue gas recovery and purification device for a steelmaking converter, which comprises a coarse filtering mechanism, a cyclone separator, a purification tower and an exhaust tower, wherein the upper end of the coarse filtering mechanism is fixedly connected with the converter through a gas collecting pipeline, the lower end of one side of the coarse filtering mechanism is fixedly connected with the upper end of the cyclone separator through a venturi tube, the lower end of the cyclone separator is fixedly connected with the lower end of one side of the purification tower through an exhaust pipeline, and the center of the upper surface of the purification tower is fixedly connected with one side of the exhaust tower through an exhaust pipeline. This smoke recovery purifier that steelmaking converter was used, carry out the cooling of removing dust at first step through coarse filtration mechanism, play the effect of dehydration in the time of removing dust, alleviate the operating pressure of purifying tower, reduce the waste of water resource, carry out the water spray cooling to the gas in the venturi tube through condenser tube to enter cyclone, through centrifugal action, with the double-phase separation of gas-liquid, accelerate the speed that the abandonment discharged through discharge valve cooperation second fan, avoid receiving external environment's influence simultaneously.

Description

Flue gas recovery and purification device for steelmaking converter

Technical Field

The utility model relates to the technical field of steelmaking converters, in particular to a flue gas recovery and purification device for a steelmaking converter.

Background

In the converter hammering process, high-temperature gas containing a large amount of CO, a small amount of CO2 and trace other components is generated. The gas is entrained with a large amount of iron oxide, metallic iron and other fine solid smoke needles, so that the gas needs to be purified, recovered and reused, but the following problems still exist in the practical application process:

1. the traditional flue gas recovery and purification device for the converter generally carries out primary cooling through a cooling flue, and after cooling, a dehydrator carries out dehydration and dust removal, so that the device area is large, the time for cooling, dust removal and dehydration is long, and flue gas produced by the converter production cannot be purified and exhausted in time;

2. the traditional purification tower has the defects of overlarge pressure, short service life, longer cycle time, low treatment efficiency, waste of water resources, incomplete purification and environmental pollution caused by short-term treatment;

3. under the condition that the external wind power is large, the traditional smoke exhaust tower easily causes the phenomenon of wind power backflow in the smoke exhaust tower, so that the smoke cannot be exhausted smoothly, and the efficiency is low.

In view of these defects, it is necessary to design a flue gas recovery and purification device for a steelmaking converter.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a flue gas recovery and purification device for a steelmaking converter, which is characterized in that a coarse filtering mechanism is used for primary dust removal and temperature reduction, the dust removal and dehydration functions are realized, the working pressure of a purification tower is reduced, the waste of water resources is reduced, the gas in a venturi tube is sprayed with water through a cooling water pipe for temperature reduction, the gas enters a cyclone separator, the gas and the liquid are separated through the centrifugal effect, the waste discharge speed is accelerated through a discharge valve and a second fan, the phenomenon of waste gas backflow caused by the influence of the external environment is avoided, and the problems in the prior art can be solved.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a flue gas recovery purifier that steelmaking converter was used, includes coarse filtration mechanism, cyclone, purifying column and emission tower, coarse filtration mechanism passes through gas collecting pipe and converter fixed connection in the upper end, and coarse filtration mechanism one side lower extreme passes through venturi tube and cyclone upper end fixed connection, and the cyclone lower extreme passes through exhaust duct and purifying column one side lower extreme fixed connection, and purifying column upper surface center passes through exhaust gas conduit and emission tower one side fixed connection.

Preferably, coarse filtration mechanism includes shell body, filter and dust fall room, and the filter is installed at shell body inner wall center, and the gas collecting pipe lower extreme runs through shell body upper surface center and with filter center fixed connection, it has even filtration pore to distribute on the filter, the filter lower extreme sets up to the dust fall room, and the gas collecting pipe lower extreme is provided with the gas outlet, and the gas outlet setting is indoor at the dust fall.

Preferably, the filter is hopper-shaped and installs in the shell body, and the sealing washer is installed respectively with shell body and gas collecting pipe junction to the filter.

Preferably, the outer side of the cyclone separator is fixedly connected with the water tank and the cooling liquid tank through bolts respectively, the upper surface of the water tank is provided with cooling water pipes which are uniformly distributed respectively, the cooling water pipes penetrate through the cooling liquid tank and are fixedly connected with the lower end edge of the venturi pipe respectively, and the lower surface of the venturi pipe is fixedly connected with the center of the upper surface of the cyclone separator.

Preferably, the cooling water pipes respectively penetrate through the venturi and are fixedly connected with the cooling spray head, and one ends of the cooling water pipes are respectively provided with a water pump.

Preferably, the purifying tower includes tower body, circulating pump, circulating pipe, purifies layer and dehydration layer, installs respectively in the tower body and purifies layer and dehydration layer, and circulating pump one end is passed through circulating pipe and is purified first fixed connection, and the circulating pump other end passes through circulating pipe and tower body one side bottom fixed connection, purifies the layer upper end and is provided with fan installation cover, installs first fan in the fan installation cover.

Preferably, a maintenance frame is installed on one side of the discharge tower, a water baffle is installed at the upper end of the discharge tower, a discharge valve is installed on the inner side of the upper end of the discharge tower, and a second fan is arranged at the upper end of the discharge valve.

Compared with the prior art, the utility model has the following beneficial effects:

1. this smoke recovery purifier that steelmaking converter was used carries out the cooling of removing dust at first step through coarse filtration mechanism, plays the effect of dehydration when removing dust, alleviates the operating pressure of purifying tower, reduces the waste of water resource, carries out the water spray cooling to the gas in the venturi tube through condenser tube to enter cyclone, through centrifugal action, with the two-phase separation of gas-liquid.

2. This fume recovery purifier that steelmaking converter was used, through the effectual area of contact that has improved gas and purification layer of first fan, guarantee that gas evenly purifies, improve purifying effect, the gas after the dehydration layer is to purifying is dehydrated, guarantees the gas purity degree of emission, environmental protection more.

3. This fume recovery purifier that steelmaking converter was used accelerates the speed that abandonment discharged through the cooperation second fan of discharge valve, avoids receiving external environment's influence simultaneously, causes the phenomenon of waste gas backward flow.

Drawings

FIG. 1 is a perspective view of the overall construction of the present invention;

FIG. 2 is a cross-sectional perspective view of the coarse filter mechanism of the present invention;

FIG. 3 is a perspective view of the cyclone separator of the present invention;

FIG. 4 is a cross-sectional perspective view of a purification tower of the present invention;

FIG. 5 is a partially cut away perspective view of a discharge tower of the present invention.

In the figure: 1. a coarse filtration mechanism; 11. an outer housing; 12. a filter plate; 13. a dust settling chamber; 2. a cyclone separator; 21. a water tank; 22. a coolant tank; 23. a cooling water pipe; 3. a purification tower; 31. a tower body; 32. a circulation pump; 33. a circulating water pipe; 34. a purification layer; 35. dehydrating the layer; 36. a purification head; 37. a fan mounting cover; 38. a first fan; 4. a discharge tower; 41. a maintenance frame; 42. a water baffle; 43. a discharge valve; 44. a second fan; 5. a gas collection conduit; 6. a venturi; 7. an exhaust duct; 8. an exhaust gas conduit.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a flue gas recovery and purification device for a steelmaking converter comprises a coarse filtering mechanism 1, a cyclone separator 2, a purification tower 3 and a discharge tower 4, wherein the upper end of the coarse filtering mechanism 1 is fixedly connected with the converter through a gas collecting pipeline 5, the coarse filtering mechanism 1 comprises an outer shell 11, a filter plate 12 and a dust settling chamber 13, the filter plate 12 is installed at the center of the inner wall of the outer shell 11, the lower end of the gas collecting pipeline 5 penetrates through the center of the upper surface of the outer shell 11 and is fixedly connected with the center of the filter plate 12, uniform filtering holes are distributed on the filter plate 12, the lower end of the filter plate 12 is provided with the dust settling chamber 13, the lower end of the gas collecting pipeline 5 is provided with a gas outlet which is arranged in the dust settling chamber 13, the filter plate 12 is installed in the outer shell 11 in a funnel shape, sealing rings are respectively installed at the joints of the filter plate 12 with the outer shell 11 and the gas collecting pipeline 5, and primary dust removal and temperature reduction are carried out through the coarse filtering mechanism 1, because the dust settling chamber 13 has a large volume, the staying time of dust in the dust settling chamber 13 is longer than the settling time of dust particles in the chamber, the dust removal and dehydration functions are realized, the working pressure of the purification tower 3 is reduced, and the waste of water resources is reduced, the lower end of one side of the coarse filtering mechanism 1 is fixedly connected with the upper end of the cyclone separator 2 through the venturi tube 6, the outer side of the cyclone separator 2 is fixedly connected with the water tank 21 and the cooling liquid tank 22 through bolts respectively, the upper surface of the water tank 21 is provided with the cooling water pipes 23 which are uniformly distributed respectively, the cooling water pipes 23 penetrate through the cooling liquid tank 22 and are fixedly connected with the lower end edge of the venturi tube 6 respectively, the lower surface of the venturi tube 6 is fixedly connected with the center of the upper surface of the cyclone separator 2, the cooling water pipes 23 penetrate through the venturi tube 6 and are fixedly connected with the cooling spray nozzle respectively, one end of the cooling water pipe 23 is provided with a water pump respectively, and the water spray is used for cooling the gas in the venturi tube 6, the dust particles carried in the gas are combined with the water vapor and enter the cyclone separator 2, the gas and the liquid are separated by centrifugal action, the lower end of the cyclone separator 2 is fixedly connected with the lower end of one side of the purification tower 3 through the exhaust pipeline 7, the purification tower 3 comprises a tower body 31, a circulating pump 32, a circulating pipe 33, a purification layer 34 and a dehydration layer 35, the purification layer 34 and the dehydration layer 35 are respectively arranged in the tower body 31, one end of the circulating pump 32 is fixedly connected with a purification head 36 through the circulating pipe 33, the other end of the circulating pump 32 is fixedly connected with the bottom end of one side of the tower body 31 through the circulating pipe 33, a fan mounting cover 37 is arranged at the upper end of the purification layer 34, a first fan 38 is arranged in the fan mounting cover 37, the gas purified through the purification head 36 is respectively purified and deacidified, meanwhile, the dust fall is further carried out, the first fan 38 effectively improves the contact area of the gas and the purification layer 34, guarantee gaseous even purification, improve purifying effect, dehydration layer 35 dehydrates the gas after the purification, guarantee the gas purity degree of emission, environmental protection more, 3 upper surface centers of purifying tower pass through exhaust duct 8 and discharge tower 4 one side fixed connection, discharge tower 4 one side is installed maintenance frame 41, discharge tower 4 upper end is installed breakwater 42, discharge tower 4 upper end inboard is installed and is discharged valve 43, discharge valve 43 upper end is provided with second fan 44, accelerate the speed of abandonment emission through discharge valve 43 cooperation second fan 44, avoid receiving external environment's influence simultaneously, cause the phenomenon of exhaust gas reflux.

In conclusion, this flue gas recovery purifier that steelmaking converter was used, carry out the cooling of removing dust through coarse filtration mechanism 1 at first step, play the effect of dehydration in the time of the dust removal, alleviate the operating pressure of purifying tower 3, reduce the waste of water resource, carry out the water spray cooling to the gas in venturi tube 6 through condenser tube 23, and enter cyclone 2, through centrifugal action, with the gas-liquid double-phase separation, through the effectual area of contact who improves gas and purification layer 34 of first fan 38, guarantee gaseous even purification, improve purifying effect, dehydration layer 35 dewaters the gas after the purification, guarantee the gas purity degree of emission, environmental protection more, accelerate the speed of abandonment emission through discharge valve 43 cooperation second fan 44, avoid receiving external environment's influence simultaneously, cause the phenomenon of waste gas backward flow.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a flue gas recovery purifier that steelmaking converter was used, includes coarse filter mechanism (1), cyclone (2), purifying column (3) and emission tower (4), its characterized in that: the upper end of the coarse filtering mechanism (1) is fixedly connected with the converter through a gas collecting pipeline (5), the lower end of one side of the coarse filtering mechanism (1) is fixedly connected with the upper end of the cyclone separator (2) through a venturi tube (6), the lower end of the cyclone separator (2) is fixedly connected with the lower end of one side of the purifying tower (3) through an exhaust pipeline (7), and the center of the upper surface of the purifying tower (3) is fixedly connected with one side of the discharging tower (4) through an exhaust pipeline (8).

2. The flue gas recovery and purification device for the steelmaking converter as claimed in claim 1, wherein: coarse filter mechanism (1) includes shell body (11), filter (12) and dust settling chamber (13), filter (12) are installed at shell body (11) inner wall center, gas collecting channel (5) lower extreme run through shell body (11) upper surface center and with filter (12) center fixed connection, it has even filtration pore to distribute on filter (12), filter (12) lower extreme sets up to dust settling chamber (13), gas collecting channel (5) lower extreme is provided with the gas outlet, the gas outlet setting is in dust settling chamber (13).

3. The flue gas recovery and purification device for the steelmaking converter as claimed in claim 2, wherein: the filter (12) are funnel-shaped and are installed in the outer shell (11), and the sealing rings are respectively installed at the connection positions of the filter (12) and the outer shell (11) and the gas collection pipeline (5).

4. The flue gas recovery and purification device for the steelmaking converter as claimed in claim 3, wherein: the outer side of the cyclone separator (2) is fixedly connected with a water tank (21) and a cooling liquid tank (22) through bolts respectively, cooling water pipes (23) which are uniformly distributed are arranged on the upper surface of the water tank (21) respectively, the cooling water pipes (23) penetrate through the cooling liquid tank (22) and are fixedly connected with the lower end edge of the venturi tube (6) respectively, and the lower surface of the venturi tube (6) is fixedly connected with the center of the upper surface of the cyclone separator (2).

5. The flue gas recovery and purification device for the steelmaking converter as claimed in claim 4, wherein: the cooling water pipes (23) penetrate through the venturi (6) respectively and are fixedly connected with the cooling spray head, and one ends of the cooling water pipes (23) are provided with water pumps respectively.

6. The flue gas recovery and purification device for the steelmaking converter as claimed in claim 5, wherein: purifying tower (3) are including tower body (31), circulating pump (32), circulating pipe (33), purify layer (34) and dehydration layer (35), install respectively in tower body (31) and purify layer (34) and dehydration layer (35), circulating pump (32) one end is passed through circulating pipe (33) and is purified first (36) fixed connection, circulating pump (32) other end passes through circulating pipe (33) and tower body (31) one side bottom fixed connection, it is provided with fan installation cover (37) to purify layer (34) upper end, install first fan (38) in fan installation cover (37).

7. The flue gas recovery and purification device for the steelmaking converter as claimed in claim 6, wherein: maintenance frame (41) is installed to emission tower (4) one side, and breakwater (42) are installed to emission tower (4) upper end, and discharge valve (43) are installed to emission tower (4) upper end inboard, and discharge valve (43) upper end is provided with second fan (44).