CN210140564U - Gas purifying device - Google Patents

Abstract

The utility model provides a gas purification device, include: the collecting pipe is arranged in the cylinder body, and an upper port of the collecting pipe is communicated with the first air pipe; at least one annular purification structure, its vertical setting is between collecting pipe and barrel, and at least one annular purification structure's upper end is connected on the barrel, and at least one annular purification structure's lower extreme is connected with the flow distribution plate, and the flow distribution plate is located between the lower port of collecting pipe and the second trachea. The utility model discloses when the adjustment purifies flow, only need to increase hoop purification structure highly just can reach the effect of increase gas flow area, need not to increase the barrel diameter, thereby make the utility model discloses area diminishes to, hoop purification structure is when thermal expansion or precooling shrink, and the atress of arbitrary point on the annular cross section evenly equals for it is more stable between barrel and the hoop purification structure.

Description

Gas purifying device

Technical Field

The utility model relates to a coal gas purifies the field, especially relates to a coal gas purifier.

Background

Coal gas is one of important fuels and raw materials in the industries of ferrous metallurgy, petrochemical industry and the like, and is widely applied, for example, the coal gas can be used as a fuel for heating processes such as a coke oven, a hot blast stove, a tube furnace, pellets and the like, the residual pressure power generation can be applied to a TRT (blast furnace gas residual pressure turbine power generation device) unit, a BPRT unit (blast furnace blast energy recovery complete unit coaxially driven by a gas turbine and a motor) and the like, the combustion power generation can be used for power generation of a boiler steam engine, CCPP (gas-steam combined cycle power generation unit) and the like, and the coal gas can be used as a chemical raw material for preparing synthetic ammonia.

However, the content of impurities such as sulfide in the coal gas treated by the existing purification device and equipment is still high, which restricts the wide application of the coal gas, when the coal gas is used as a fuel, the sulfur dioxide concentration in hot flue gas after combustion exceeds the standard due to the high content of impurities such as sulfide, which cannot meet the requirement of environmental protection standard, and the high content of impurities such as sulfide can also influence the quality of synthesized products when the coal gas is used as a chemical raw material. Therefore, how to effectively remove the impurities such as sulfide in the gas and ensure that the quality of the purified gas can meet the standard requirements of different user points such as residual pressure power generation, direct combustion, combustion power generation, chemical raw materials or purification and the like is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a coal gas purification device to solve coal gas when purifying, to the not good problem of impurity absorption effect such as sulphide in the coal gas.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a gas purification device, which comprises a gas inlet pipe and a gas outlet pipe;

the gas collecting device comprises a barrel, a first gas pipe is arranged at the top of the barrel, a second gas pipe is arranged at the lower end of the barrel, a collecting pipe is arranged in the barrel, and the upper port of the collecting pipe is communicated with the first gas pipe;

at least one hoop purification structure, its vertical setting is in the collecting pipe with between the barrel, at least one the upper end of hoop purification structure is connected on the barrel, at least one the lower extreme of hoop purification structure is connected with the flow distribution plate, the flow distribution plate is located the lower port of collecting pipe with between the second trachea.

Further, at least one annular purification structure comprises an inner net barrel and an outer net barrel which are connected between the flow distribution plate and the top of the barrel body, the outer net barrel is sleeved outside the inner net barrel, a purification annular cavity is formed between the inner net barrel and the outer net barrel, and the purification annular cavity is filled with filler;

an annular inner cavity is formed between the inner net barrel and the collecting pipe, an annular outer cavity is formed between the outer net barrel and the barrel body, and the lower port of the collecting pipe is communicated with the annular inner cavity.

Further, at least one the hoop purification structure still includes middle net section of thick bamboo, middle net section of thick bamboo is located interior net section of thick bamboo with between the outer net section of thick bamboo, just middle net section of thick bamboo is connected the flow distribution plate with between the top of barrel, middle net section of thick bamboo with form first purification chamber between the interior net section of thick bamboo, middle net section of thick bamboo with form the second between the outer net section of thick bamboo and purify the chamber, first purification chamber with the second purifies the chamber combination and forms purify the ring chamber.

Furthermore, a first feeding port and a second feeding port are formed in the top of the cylinder body, the first feeding port is communicated with the first purification cavity, and the second feeding port is communicated with the second purification cavity.

Further, the filler is a molecular sieve or activated carbon.

Furthermore, at least one annular purification structure is connected with the cylinder body through a plurality of outer ring supporting blocks which are uniformly distributed in the circumferential direction;

and at least one annular purification structure is connected with the collecting pipe through a plurality of circumferentially and uniformly distributed inner ring supporting blocks.

Furthermore, the middle part of the flow distribution plate protrudes towards the side where the first air pipe is located and forms a flow distribution arc surface.

Furthermore, the collecting pipe is internally provided with a dustproof pipe in a penetrating manner, the dustproof pipe is provided with a large-diameter end and a small-diameter end, the large-diameter end is connected with the lower end of the collecting pipe, and the outer diameter of the small-diameter end is smaller than that of the large-diameter end and is positioned above the large-diameter end.

Furthermore, the small-diameter end of the dustproof pipe is connected with a conical dustproof cap, a plurality of air holes are formed in the conical dustproof cap, and the collecting pipe is communicated with the dustproof pipe through the air holes.

Further, the lower end of the cylinder body is provided with an ash outlet, and the ash outlet is positioned below the second air pipe;

the barrel is internally provided with an inclined plate, and the inclined plate is inclined downwards towards the ash outlet.

The utility model discloses a coal gas purification device's characteristics and advantage are: through at least one hoop purification structure of vertical setting between collecting pipe and barrel, when needs adjustment purification flow, only need to increase hoop purification structure's height just can reach the effect of increase gas flow area, need not to increase the barrel diameter, thereby makes the utility model discloses a coal gas purification device's area diminishes to, hoop purification structure is when thermal expansion or precooling shrink, and the atress of arbitrary point on the annular cross section evenly equals for it is more stable between barrel and the hoop purification structure.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the gas purification device of the present invention.

The reference numbers illustrate:

1. a barrel; 11. a first air pipe; 12. a second air pipe; 121. bending the tube; 1211. a horizontal section of pipe; 1212. a vertical section of pipe; 13. a first feeding port; 14. a second feeding port; 15. an ash outlet;

2. a collection pipe; 21. a lower port;

3. an annular purification structure; 31. an inner mesh cylinder; 32. an outer mesh cylinder; 33. a purification ring cavity; 331. a first purification chamber; 332. a second purification chamber; 34. an annular inner cavity; 35. an annular outer cavity; 36. a middle mesh drum;

4. a flow distribution plate; 41. a flow-dividing arc surface;

5. an outer ring supporting block; 51. an outer ring supporting block; 52. an outer ring supporting block;

6. an inner ring supporting block; 61. an inner ring supporting block; 62. an inner ring supporting block;

7. a dust-proof pipe; 71. a large diameter end; 72. a small diameter end;

8. a conical dust cap; 81. air holes;

9. an inclined plate.

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.

As shown in fig. 1, the utility model provides a gas purification device, include: the gas collecting device comprises a barrel body 1, wherein a first gas pipe 11 is arranged at the top of the barrel body 1, a second gas pipe 12 is arranged at the lower end of the barrel body 1, a collecting pipe 2 is arranged in the barrel body 1, and the upper port of the collecting pipe 2 is communicated with the first gas pipe 11;

at least one hoop purification structure 3, its vertical setting is between collecting pipe 2 and barrel 1, and the upper end of at least one hoop purification structure 3 is connected on barrel 1, and the lower extreme of at least one hoop purification structure 3 is connected with flow distribution plate 4, and flow distribution plate 4 is located between collecting pipe 2's lower port 21 and second trachea 12.

The utility model discloses a coal gas purification device is vertical structure, and at least one hoop purification structure 3 of vertical setting between collecting pipe 2 and barrel 1 is the vertical setting of annular in barrel 1, when needs adjustment purification flow, only need increase hoop purification structure 3 highly just can reach the effect of increase gas flow area, need not to increase barrel 1 diameter, thereby makes the utility model discloses a coal gas purification device's area diminishes to reached the effect that equipment scale miniaturization, material requirement are low, the whole small investment. Moreover, when the annular purification structure 3 expands under heat or contracts under precooling, the stress at any point on the annular section of the annular purification structure is uniform and equal, so that the cylinder body 1 and the annular purification structure 3 are more stable.

In this embodiment, the second air tube 12 is disposed on the lower side wall of the cylinder 1, and the second air tube 12 has a bent tube 121 extending into the cylinder 1, the bent tube 121 includes a horizontal tube 1211 and a vertical tube 1212, and the vertical tube 1212 is disposed in the middle of the cylinder 1 and below the diversion plate 4.

The utility model discloses an in the embodiment, be equipped with at least one hoop purification structure 3 in the barrel 1. In this embodiment, there are two annular purification structures 3, and the two annular purification structures 3 are stacked from the inside to the outside of the cylinder 1, but of course, in other embodiments, there may be one annular purification structure 3, or three or more annular purification structures 3 are stacked from the inside to the outside of the cylinder 1, which is not limited herein.

Specifically, in a possible embodiment, the barrel 1 is provided with a circumferential purification structure 3, which includes an inner mesh cylinder 31 and an outer mesh cylinder 32 connected between the splitter plate 4 and the top of the barrel 1, the outer mesh cylinder 32 is sleeved outside the inner mesh cylinder 31, a purification annular cavity 33 is formed between the inner mesh cylinder 31 and the outer mesh cylinder 32, and the purification annular cavity 33 is filled with a filler; wherein, an annular inner cavity 34 is formed between the inner mesh cylinder 31 and the collecting pipe 2, an annular outer cavity 35 is formed between the outer mesh cylinder 32 and the cylinder 1, and the lower port of the collecting pipe 2 is communicated with the annular inner cavity 34. This embodiment is through the annular vertical structure that adopts purification ring chamber 33 for the effective area of contact of packing is bigger in the purification ring chamber 33, and the thickness of packing is thinner, and absorption mass transfer efficiency is higher, and the system resistance loss is littleer.

In another possible embodiment, two annular purification structures 3 are provided in the barrel body 1, that is, an intermediate net barrel 36 is further provided between the inner net barrel 31 and the outer net barrel 32 of the annular purification structures 3 of the above embodiment, the intermediate net barrel 36 divides the purification ring cavity 33 into a first purification cavity 331 and a second purification cavity 332, the intermediate net barrel 36 is connected between the diversion plate 4 and the top of the barrel body 1, the first purification cavity 331 is formed between the intermediate net barrel 36 and the inner net barrel 31, the second purification cavity 332 is formed between the intermediate net barrel 36 and the outer net barrel 32, and the first purification cavity 331 and the second purification cavity 332 can be filled with different types of fillers.

In the utility model discloses a still another feasible embodiment, through set up the middle net section of thick bamboo 36 of different quantity between inner net section of thick bamboo 31 and outer net section of thick bamboo 32, for example two, three or more middle net section of thick bamboo 36 to realize setting up the purpose of a plurality of hoop purification structure 3 in barrel 1, the quantity of this middle net section of thick bamboo 36 can set up according to the kind of filler, does not restrict the quantity of middle net section of thick bamboo 36 here.

The utility model discloses an in the embodiment that is equipped with two hoop purification structure 3 in barrel 1, first dog-house 13 and second dog-house 14 have been seted up at the top of this barrel 1, and this first dog-house 13 is linked together with first purification chamber 331, and this second dog-house 14 is linked together with second purification chamber 332. The first feeding port 13 and the second feeding port 14 are used for facilitating the filling of the first purifying chamber 331 and the second purifying chamber 332 with the filling material.

The filler of the present invention may be molecular sieve or activated carbon, and of course, in other embodiments, the filler may also be graphene or other materials with good adsorption performance, which is not limited herein. The inner mesh tube 31, the outer mesh tube 32, and the intermediate mesh tube 36 may be cylindrical structures formed by surrounding mesh wires, or may be polygonal structures.

In the utility model, at least one annular purification structure 3 is connected with the cylinder body 1 through a plurality of outer ring supporting blocks 5 which are circumferentially and uniformly distributed; at least one annular purification structure 3 is connected with the collecting pipe 2 through a plurality of inner ring supporting blocks 6 which are uniformly distributed in the circumferential direction. In the present embodiment, the plurality of inner ring support blocks 6 include a plurality of inner ring support blocks 61 located at an upper portion of the annular inner cavity 34 and a plurality of inner ring support blocks 62 located at a lower portion of the annular inner cavity 34, and an upper end and a lower end of the inner mesh tube 31 are connected to an upper end and a lower end of the collecting pipe 2 through the plurality of inner ring support blocks 61 and the plurality of inner ring support blocks 62, respectively; the plurality of outer ring support blocks 5 include a plurality of outer ring support blocks 51 located on the upper portion of the annular outer cavity 35 and a plurality of outer ring support blocks 52 located on the lower portion of the annular outer cavity 35, and the upper end and the lower end of the outer mesh cylinder 32 are respectively connected to the upper end and the lower end of the cylinder 1 through the plurality of outer ring support blocks 51 and the plurality of outer ring support blocks 52, so that the connection stability of the at least one annular purification structure 3 in the cylinder 1 is enhanced.

The utility model discloses in, the middle part of flow distribution plate 4 is protruding and forms reposition of redundant personnel cambered surface 41 towards the side of first trachea 11 place, the perpendicular section pipeline 1212 that should buckle pipe 121 is located the protruding highest position of reposition of redundant personnel cambered surface 41 just, through setting up flow distribution plate 4, can prevent effectively that the air current from directly impacting hoop purification structure 3 and producing towards the board effect, thereby avoid purifying the filler boiling and breakage under the impact of air current in the ring chamber 33, and simultaneously, this flow distribution plate 4's reposition of redundant personnel cambered surface 41 still has certain water conservancy diversion distribution effect, so that the air current can be even stable get into annular exocoel 35, and transversely through purifying ring chamber 33 after annular exocoel 35 distributes evenly.

In this embodiment, the flow distribution plate 4 is located at the middle lower part in the cylinder 1, the top of the flow distribution plate 4 is fixedly connected with the inner net barrel 31, the outer net barrel 32 and the middle net barrel 36, and the outer edge of the flow distribution plate 4 is fixed with the inner wall of the cylinder 1 through a plurality of circumferentially and uniformly distributed connection points.

The utility model discloses in, wear to be equipped with dustproof pipe 7 in the collecting pipe 2, this dustproof pipe 7 has big footpath end 71 and path end 72, and this big footpath end 71 links to each other with collecting pipe 2's lower port 21, and the external diameter of this path end 72 is less than the external diameter of big footpath end 71 and is located the top of big footpath end 71.

Furthermore, the small-diameter end 72 of the dustproof pipe 7 is connected with a conical dustproof cap 8, a plurality of air holes 81 are formed in the conical dustproof cap 8, and the collecting pipe 2 can be communicated with the dustproof pipe 7 through the air holes 81.

The utility model discloses the integrated configuration of dustproof pipe 7 and toper dustproof cap 8 has formed dust catcher, and its contraction type structure big-end-up can effectively get rid of impurity such as a small amount of broken filler dust that carries in the gas.

The utility model discloses in, ash hole 15 has been seted up to the lower extreme of barrel 1, and this ash hole 15 sets up on the lower part lateral wall of barrel 1, and it is located the below of second trachea 12.

Further, an inclined plate 9 is further disposed in the cylinder 1, the inclined plate 9 is located below the horizontal pipe 1211 of the bent pipe 121, an outer periphery of the inclined plate 9 is fixedly connected with an inner wall of the cylinder 1, and the inclined plate 9 is inclined downward toward the ash outlet 15. By arranging the inclined plate 9, dust generated in the purification and regeneration processes can be effectively collected and regularly discharged after being collected in a centralized manner.

As shown in fig. 1, the gas purifying device of the present invention can purify gas and regenerate gas.

The gas purification process is as follows:

firstly, closing an ash outlet 15 at the lower part of a cylinder body 1, opening a second air pipe 12 at the lower part of the cylinder body 1 and a first air pipe 11 at the top part of the cylinder body 1, conveying gases such as coke oven gas, blast furnace gas or mixed gas to the second air pipe 12 through an external pipeline and entering the cylinder body 1, enabling the gases entering the cylinder body 1 to enter an annular outer cavity 35 after primary distribution and dust removal through a flow distribution plate 4, then firstly performing dust removal, deoiling and dehydration treatment through a filler in a second purification cavity 332, enabling the gases to enter a first purification cavity 331 and performing purification treatment on impurities such as sulfide and the like contained in the gases through the filler in the first purification cavity 331, enabling the purified gases to enter an annular inner cavity 34, enabling the gases to enter a dustproof pipe 7 through an inlet at the lower part of a collecting pipe 2, effectively removing a small amount of broken filler dust carried in the gases in the dustproof pipe 7, enabling the purified gases after dust removal to enter the upper part of the gas collecting pipe 2 through a plurality of air, and enters the first gas pipe 11 through the gas collecting pipe 2 and is conveyed to a subsequent system through the first gas pipe 11, thereby realizing the high-efficiency purification of the coal gas and meeting the requirements of users on the quality of the coal gas.

The gas regeneration process is as follows:

firstly, closing the ash outlet 15 at the lower part of the cylinder 1, opening the second air pipe 12 at the lower part of the cylinder 1 and the first air pipe 11 at the top part of the cylinder 1, leading the regeneration gas to enter the collecting pipe 2 from the first air pipe 11, in this embodiment, the regeneration gas may be purified gas, such as blast furnace gas, coke oven gas or natural gas, or may be inert gas, such as nitrogen gas, or medium pressure steam, without limitation, the regeneration gas enters the annular inner cavity 34 from the outlet at the bottom of the collecting pipe 2, and enters the first purifying cavity 331 and the second purifying cavity 332 in sequence through the annular inner cavity 34, thereby realizing the regeneration of the filling materials in the first purifying cavity 331 and the second purifying cavity 332, the regenerated gas enters the second gas pipe 12 through the annular outer cavity 35, and is conveyed to a regeneration gas recovery system through a second gas pipe 12, thereby realizing the recovery of the waste heat of the hot flue gas and improving the energy utilization efficiency of the system.

The utility model discloses a gas purification device realizes the high-efficient purification of coal gas, effectively gets rid of impurity such as sulphide in the coal gas, when using as fuel, can ensure that impurity concentration emission such as sulfur dioxide in the hot flue gas after burning is up to standard, satisfies environmental protection standard requirement; when the product is used as a chemical raw material, the product quality can be ensured.

The above description is only for the embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.

Claims (10)

1. A gas purification device is characterized by comprising;

the gas collecting device comprises a barrel, a first gas pipe is arranged at the top of the barrel, a second gas pipe is arranged at the lower end of the barrel, a collecting pipe is arranged in the barrel, and the upper port of the collecting pipe is communicated with the first gas pipe;

at least one hoop purification structure, its vertical setting is in the collecting pipe with between the barrel, at least one the upper end of hoop purification structure is connected on the barrel, at least one the lower extreme of hoop purification structure is connected with the flow distribution plate, the flow distribution plate is located the lower port of collecting pipe with between the second trachea.

2. The gas purification device according to claim 1, wherein at least one of the annular purification structures comprises an inner mesh cylinder and an outer mesh cylinder connected between the flow distribution plate and the top of the cylinder body, the outer mesh cylinder is sleeved outside the inner mesh cylinder, a purification annular cavity is formed between the inner mesh cylinder and the outer mesh cylinder, and the purification annular cavity is filled with a filler;

an annular inner cavity is formed between the inner net barrel and the collecting pipe, an annular outer cavity is formed between the outer net barrel and the barrel body, and the lower port of the collecting pipe is communicated with the annular inner cavity.

3. The gas cleaning device according to claim 2, wherein at least one of said annular cleaning structures further comprises an intermediate mesh cylinder, said intermediate mesh cylinder being located between said inner mesh cylinder and said outer mesh cylinder, and said intermediate mesh cylinder being connected between said diverter plate and the top of said barrel, said intermediate mesh cylinder and said inner mesh cylinder forming a first cleaning chamber therebetween, said intermediate mesh cylinder and said outer mesh cylinder forming a second cleaning chamber therebetween, said first cleaning chamber and said second cleaning chamber forming said cleaning ring chamber.

4. The gas purification device according to claim 3, wherein a first feeding port and a second feeding port are formed in the top of the cylinder, the first feeding port is communicated with the first purification cavity, and the second feeding port is communicated with the second purification cavity.

5. The gas cleaning device according to claim 2, wherein the filler is a molecular sieve or activated carbon.

6. The gas cleaning device according to claim 1, wherein at least one of said annular cleaning structures is connected to said barrel by a plurality of circumferentially and uniformly distributed outer ring support blocks;

and at least one annular purification structure is connected with the collecting pipe through a plurality of circumferentially and uniformly distributed inner ring supporting blocks.

7. The gas cleaning device according to claim 1, wherein the middle portion of the flow distribution plate is convex toward the side of the first gas pipe and forms a flow distribution arc surface.

8. The gas cleaning device according to claim 1, wherein a dust-proof pipe is inserted into the collecting pipe, the dust-proof pipe having a large diameter end and a small diameter end, the large diameter end being connected to a lower end of the collecting pipe, and the small diameter end having an outer diameter smaller than an outer diameter of the large diameter end and being located above the large diameter end.

9. The gas cleaning device according to claim 8, wherein a tapered dust cap is connected to a small-diameter end of the dust tube, a plurality of air holes are formed in the tapered dust cap, and the collecting tube is communicated with the dust tube through the plurality of air holes.

10. The gas purification device according to claim 1, wherein an ash outlet is formed at the lower end of the cylinder, and the ash outlet is positioned below the second gas pipe;

the barrel is internally provided with an inclined plate, and the inclined plate is inclined downwards towards the ash outlet.

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