CN218834064U - Space-saving multistage series absorption pretreatment device - Google Patents
Space-saving multistage series absorption pretreatment device Download PDFInfo
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- CN218834064U CN218834064U CN202222976662.5U CN202222976662U CN218834064U CN 218834064 U CN218834064 U CN 218834064U CN 202222976662 U CN202222976662 U CN 202222976662U CN 218834064 U CN218834064 U CN 218834064U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a space-saving multistage series absorption pretreatment device, which comprises a tower body, a plurality of spraying absorption sections and a plurality of cyclone units; the bottom of the side surface of the tower body is provided with an air inlet, and the top of the tower body is provided with an air outlet; each spray absorption section comprises at least one group of spray packing components; the spraying filler component comprises a spraying filler layer and a filler spraying device; the filler spraying device is arranged above the spraying filler layer; the rotational flow unit is arranged between two adjacent spraying absorption sections; the rotational flow unit comprises a rotational flow layer and a rotational flow spraying device; the cyclone layer comprises a fixed cyclone shell and a plurality of cyclone blades fixed in the cyclone shell; the top of the cyclone shell is provided with a liquid guiding edge, and the liquid guiding edge is provided with a plurality of liquid guiding ports; the cyclone layer is also provided with an absorption liquid return pipe, and the plurality of liquid guide ports are communicated with the absorption liquid return pipe through liquid guide pieces; the rotational flow spraying device is arranged above the rotational flow layer. The utility model has the advantages of saving land occupation, reducing investment, saving operating cost and the like.
Description
Technical Field
The utility model belongs to the technical field of exhaust-gas treatment, a absorb preprocessing device is related to, especially relate to a space-saving multistage series connection absorbs preprocessing device.
Background
The waste gas of industrial enterprises is complex in type, generally a single treatment process cannot be effectively treated, and multiple processes are needed to be jointly used.
Organic and inorganic waste gas coexists in common waste gas, and the conventional process for treating organic waste gas is not suitable for treating inorganic waste gas generally, so that pretreatment measures are required to be set for efficiently purifying inorganic waste gas, and tail gas is connected to a subsequent organic waste gas treatment system. The common inorganic waste gas pretreatment mode is mainly chemical absorption, and when the inorganic waste gas is of a plurality of types, multi-stage absorption is generally needed, for example, a sulfuric acid solution absorbs and purifies ammonia gas, a sodium hydroxide solution absorbs and purifies hydrochloric acid mist, a sodium hypochlorite solution absorbs and purifies nitrogen oxide, and the like. The common multistage absorption device is generally split, waste gas enters from bottom to top, exhaust at the top of the front-stage absorption tower needs to be connected into the rear-stage absorption tower through an elbow pipeline, and the system resistance is large, so that the occupied area of the whole pretreatment system is large, and the equipment investment and operation cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a space-saving multistage series connection absorption pretreatment device to overcome the defects of the prior art.
In order to achieve the above object, the present invention provides a space-saving multistage series absorption pretreatment apparatus having such features: comprises a tower body, a plurality of spray absorption sections and a plurality of cyclone units; the bottom of the side surface of the tower body is provided with an air inlet, and the top of the tower body is provided with an air outlet; each spray absorption section comprises at least one group of spray packing components; the spraying filler component comprises a spraying filler layer and a filler spraying device; the spraying filler layer is transversely arranged in the tower body; the filler spraying device is arranged above the spraying filler layer and can spray absorption liquid to the spraying filler layer; the spraying filler components of the spraying absorption sections are sequentially arranged from bottom to top; the spraying filler layer of the lowest spraying absorption section is positioned above the air inlet of the tower body; the cyclone unit is arranged between two adjacent spraying absorption sections, and is used for treating waste gas and collecting absorption liquid flowing down from the Fang Penlin absorption sections on the waste gas; the rotational flow unit comprises a rotational flow layer and a rotational flow spraying device; the cyclone layer comprises an inverted cone-shaped cyclone shell fixed in the tower body and a plurality of cyclone blades which are fixed in the cyclone shell and are arranged at intervals in the circumferential direction, and a cyclone air inlet is formed in the bottom of the cyclone shell; the top of the cyclone shell is provided with a liquid guiding edge, and the liquid guiding edge is provided with a plurality of liquid guiding ports; the cyclone layer is also provided with an absorption liquid return pipe, and a plurality of liquid guide ports are communicated with the absorption liquid return pipe through a liquid guide piece and used for collecting absorption liquid centrifuged by cyclone; the rotational flow spraying device is arranged above the rotational flow layer and can spray absorption liquid to the rotational flow layer.
Further, the utility model provides a space-saving multistage series connection absorbs preprocessing device can also have such characteristic: the cyclone unit also comprises a cyclone circulating water tank; the absorption liquid return pipe is connected with the rotational flow circulating water tank; the rotational flow circulating water tank is connected with a rotational flow circulating water pump, and is connected with each filler spraying device of the spraying absorption section above the rotational flow unit and the rotational flow spraying device of the rotational flow unit through the rotational flow circulating water pump and a pipeline.
Further, the utility model provides a space-saving multistage series connection absorbs preprocessing device can also have such characteristic: the cyclone circulating water tank is arranged outside the tower body, and the setting position of the cyclone circulating water tank is lower than the cyclone layer of the cyclone unit.
Further, the utility model provides a multistage series connection of space-saving absorbs preprocessing device can also have such characteristic: the device also comprises a bottom circulating water tank; the bottom circulating water tank is arranged on one side of the bottom of the tower body, is communicated with the bottom of the tower body and collects absorption liquid flowing down from the spraying absorption section at the bottom.
Further, the utility model provides a multistage series connection of space-saving absorbs preprocessing device can also have such characteristic: the bottom circulating water tank is connected with a bottom circulating water pump, and the bottom circulating water tank is connected with each filler spraying device of the bottommost spraying absorption section through the bottom circulating water pump and a pipeline.
Further, the utility model provides a multistage series connection of space-saving absorbs preprocessing device can also have such characteristic: also comprises a demisting filler layer; the demisting filler layer is arranged in the tower body and is positioned above the plurality of spraying absorption sections.
Further, the utility model provides a multistage series connection of space-saving absorbs preprocessing device can also have such characteristic: the liquid guide part of the rotational flow layer is composed of a funnel part and a pipe body part which are continuously communicated, the funnel part is connected with the corresponding liquid guide port, and the pipe body part is connected with the absorption liquid return pipe; the liquid guide piece is fixed on the outer wall of the cyclone shell.
Further, the utility model provides a multistage series connection of space-saving absorbs preprocessing device can also have such characteristic: the filler spraying device and the rotational flow spraying device are both composed of a spraying pipe and a plurality of spray heads arranged on the spraying pipe; the spray pipe is fixedly arranged in the tower body.
Further, the utility model provides a space-saving multistage series connection absorbs preprocessing device can also have such characteristic: the spray packing layer and the demisting packing layer are both composed of a grating baffle and packing, the grating baffle is fixed in the tower body, and the packing is placed on the grating baffle; the packing of the spraying packing layer is pall ring packing or step ring packing; the filler of the demisting filler layer is a PP baffle plate or a metal wire mesh.
Further, the utility model provides a multistage series connection of space-saving absorbs preprocessing device can also have such characteristic: wherein, the tower body lateral wall is equipped with a plurality of sight glasses and access hole.
The beneficial effects of the utility model reside in that:
1. and the occupied land is saved. The utility model provides a pair of multistage series connection of space saving type absorbs preprocessing device can be integrated a plurality of absorption technology sections in an equipment, has only increased the height, is showing and has practiced thrift occupation of land and space.
2. The investment is reduced. Compare in a plurality of absorption technology sections, the utility model discloses the device utilization efficiency is higher, and it is more convenient to install, has practiced thrift material and exhaust gas piping, and investment cost reduces.
3. And the operation cost is saved. To current split type multistage absorbing device, preceding stage absorption tower exhaust connects to the back stage absorption tower, needs 4 45 elbows at least and is not less than the straight tube section of tower height, generally needs additionally to increase 200 Pa's pipe network resistance, and the fan is overcome the resistance and need consume the extra work of electric energy, and the utility model discloses these extra work can be avoided to the device to effectively practice thrift the working cost.
Drawings
FIG. 1 is a schematic structural view of a space-saving multistage series absorption pretreatment apparatus;
FIG. 2 is a top view of a cyclonic layer;
fig. 3 is a schematic structural view of the liquid guide member.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in figure 1, the utility model provides a space-saving multistage series absorption pretreatment device, which comprises a tower body 1, a plurality of spraying absorption sections 2 and a plurality of cyclone units 3.
The tower body 1 has an air inlet 11 at the bottom of its side and an air outlet 12 at the top of the tower body 1.
Each spray absorption stage 2 comprises at least one set of spray packing assemblies 21. The spray packing assembly 21 includes a spray packing layer 211 and a packing spray device 212. The spraying filler layer 211 is transversely arranged in the tower body 1. The filler spraying device 212 is arranged above the spraying filler layer 211 and can spray absorption liquid to the spraying filler layer 211.
The spraying filler components 21 of the spraying absorption sections 2 are sequentially arranged from bottom to top. The spraying filler layer 211 of the lowest spraying absorption section 2 is positioned above the air inlet 11 of the tower body 1.
The cyclone unit 3 is arranged between two adjacent spraying absorption sections 2, and collects absorption liquid flowing down from a Fang Penlin absorption section 2 on the cyclone unit while treating waste gas. Namely, the number of the cyclone units 3 is one less than that of the spraying absorption sections 2, one cyclone unit 3 is arranged between every two adjacent spraying absorption sections 2, and the cyclone units 3 separate the two adjacent spraying absorption sections 2 and collect the absorption liquid flowing down from the Fang Penlin absorption sections 2.
The cyclone unit 3 includes a cyclone layer 31 and a cyclone shower 32.
As shown in fig. 1 and 2, the swirling layer 31 includes a swirling shell 311 having a reverse conical shape fixed in the tower body 1, and a plurality of swirling vanes 312 circumferentially arranged and spaced apart from each other and fixed in the swirling shell 311, and a swirling inlet 313 is provided at a bottom of the swirling shell 311. The top of the cyclone shell 311 has a liquid guiding edge, and the liquid guiding edge has a plurality of liquid guiding ports 314. The cyclone layer 31 is further provided with an absorption liquid return pipe 315, and the plurality of liquid guide ports 314 are communicated with the absorption liquid return pipe 315 through a liquid guide member 316 to collect the absorption liquid centrifuged by the cyclone. As shown in fig. 3, the liquid guiding member 316 of the swirling flow layer 31 is formed by a funnel portion and a pipe portion which are continuously communicated, the funnel portion is connected to the corresponding liquid guiding port 314, and the pipe portion is connected to the absorption liquid return pipe 315. The liquid guide member 316 is fixed on the outer wall of the cyclone housing 311.
The swirling flow shower device 32 is provided above the swirling flow layer 31, and can shower the absorption liquid to the swirling flow layer 31. Preferably, the swirling layer 31 comprises 48 swirling vanes 312, and the swirling vanes 312 are at an angle of 25 ℃ to the horizontal plane.
Wherein, the filler spraying device 212 and the rotational flow spraying device 32 are both composed of a spraying pipe and a plurality of spray heads arranged on the spraying pipe. The spray pipe is fixedly arranged in the tower body 1.
The cyclone unit 3 further includes a cyclone circulation water tank 33. The absorption liquid return pipe 315 is connected to the cyclone circulation tank 33. The rotational flow circulation water tank 33 is connected with a rotational flow circulation water pump 331, and the rotational flow circulation water tank 33 is connected with each filler spraying device 212 of the spraying absorption section 2 above the rotational flow unit 3 and the rotational flow spraying device 32 of the rotational flow unit 3 through the rotational flow circulation water pump 331 and a pipeline, and is specifically connected with the filler spraying device 212 and the spraying pipe of the rotational flow spraying device 32. That is, the absorption liquid sprayed by the upper spray absorption section 2 is collected in the cyclone circulating water tank 33 through the liquid guide member 316 and the absorption liquid return pipe 315, and then is delivered back to the spray absorption section 2 above the cyclone circulating water tank through the cyclone circulating water pump 331, so as to circularly treat the waste gas.
Preferably, the swirling-flow circulation water tank 33 is provided outside the tower body 1, and the position of the swirling-flow circulation water tank 33 is lower than the swirling flow layer 31 of the swirling flow unit 3, so that the absorption liquid in the absorption liquid return pipe 315 can flow by gravity to the swirling-flow circulation water tank 33 of the swirling flow unit 3.
The apparatus also comprises a bottom circulation tank 4. The bottom circulating water tank 4 is arranged on one side of the bottom of the tower body 1, is communicated with the bottom of the tower body 1, and collects absorption liquid flowing down from the spraying absorption section 2 at the bottom. Specifically, the bottom circulating water tank 4 protrudes from the side surface of the bottom of the tower body 1 (the bottom circulating water tank 4 is located on the rear side surface of the bottom of the tower body 1 in fig. 1), and is continuously communicated with the bottom of the tower body 1 to form a whole, and the absorption liquid falling into the bottom of the tower body 1 enters the bottom circulating water tank 4. The bottom circulating water tank 4 is connected with a bottom circulating water pump 41, and the bottom circulating water tank 4 is connected with each filler spraying device 212 of the lowermost spraying absorption section 2 through the bottom circulating water pump 41 and a pipeline, and is specifically connected with a spraying pipe of the filler spraying device 212. Namely, the bottom circulating water tank 4 collects the absorption liquid sprayed by the bottommost spray absorption section 2, and then the absorption liquid is conveyed back to the bottommost spray absorption section 2 through the bottom circulating water pump 41 to circularly treat the waste gas.
The device also comprises a demisting packing layer 5. The demisting filler layer 5 is arranged in the tower body 1 and is positioned above the plurality of spraying absorption sections 2, so that the amount of liquid in the treated waste gas is reduced.
Wherein, the spraying filler layer 211 and the demisting filler layer 5 are both composed of a grating baffle and filler, and the filler is placed on the grating baffle. The packing of the spray packing layer 211 is pall ring packing or step ring packing, spray liquid can be uniformly distributed, and the gas-liquid mass transfer efficiency is improved; the filler of the demisting filler layer 5 is a PP baffle plate or a metal wire mesh.
The side wall of the tower body 1 is provided with a plurality of sight glasses and access holes for accessing the inner spray heads, the packing layers and other structures.
In this embodiment, the space-saving multistage series absorption pretreatment apparatus includes two spray absorption sections 2 (a lower absorption spray section and an upper absorption spray section) and one cyclone unit 3. The mixed waste gas containing inorganic and organic enters the space-saving multistage series absorption pretreatment device through the gas inlet 11, the waste gas firstly passes through the lower spraying absorption section 2, and the lower spraying absorption section is provided with three groups of spraying filler components 21. The bottom circulating water tank 4 in the tower body 1 can provide absorption liquid for the lower absorption spraying section, and the absorption liquid after spraying automatically flows back to the bottom circulating water tank 4. The waste gas purified by the lower absorbing spray section enters the upper absorbing spray section through the cyclone layer 31, and the waste gas moves upward through the gaps between the cyclone blades 312. Under the centrifugal action of the rotational flow generated when the gas with liquid passes through the rotational flow blades, the sprayed absorption liquid is collected by the liquid guide piece 316 and enters the absorption liquid return pipe 315, gravity flows back to the rotational flow circulation water tank 33 of the rotational flow unit 3, and then is conveyed to the upper absorption spray section and the spray head of the rotational flow unit 3 through corresponding pipelines. The upper absorption spray section is provided with a group of spray packing components 21 for further treatment of the exhaust gas. The upper part of the upper absorption spraying section is provided with a demisting filler layer 5, which can reduce the liquid carrying amount of the exhaust port 12.
Wherein the upper portion sprays and absorbs section 2 and the lower part sprays and absorbs section 2 and adopts two kinds of different absorption liquids, and space-saving multistage series connection absorption preprocessing device has integrateed two absorption technology sections in the direction of height, reduces exhaust gas duct and elbow, has reduced system resistance, has practiced thrift the working costs, but the while effectual reduction takes up an area of working costs, and the flexibility is high. For the rotational flow layer 31, the absorption liquid can form a water film with a large surface area on the rotational flow layer 31 without filling, the absorption effect is greatly improved, the absorption liquid can be used as separating layers of different spraying absorption sections 2 under the condition of not influencing the flow of waste gas, the absorption efficiency is ensured, the internal space is obviously saved, and the resistance is reduced.
Besides the filler, the material of other structures of the device is PP, FRP, carbon steel, 316L stainless steel or 2205 stainless steel, for example, a sulfuric acid solution is used as an absorption liquid or inorganic waste gas contains a large amount of acid mist, and the FRP or 2205 stainless steel material is preferred.
The embodiment specifically uses the space-saving multistage serial absorption pretreatment device. Treating the mixture containing trimethylamine, hydrochloric acid, methanol and ethyl acetateMixed exhaust gas of (2). Wherein the trimethylamine is alkaline and has a concentration of 10mg/m 3 . Hydrochloric acid is acidic, and the concentration is 8mg/m 3 . The methanol and the ethyl acetate are neutral, and the total concentration is about 2000mg/m 3 . The mixed waste gas firstly passes through the lower spraying absorption section 2, the absorption liquid is 10-20% sulfuric acid solution, and the purification efficiency of trimethylamine can reach more than 95% through acid-base neutralization reaction. The waste gas from which trimethylamine is removed enters the upper spraying absorption section 2 through the cyclone unit 3, the absorption liquid is sodium hydroxide aqueous solution, the pH value is controlled to be more than 10, and the purification efficiency of hydrochloric acid mist and sulfuric acid mist brought out by the lower spraying absorption section 2 can reach more than 98% through acid-base neutralization reaction. The tail gas enters a subsequent RTO treatment system after being subjected to two-stage chemical absorption (a lower absorption spraying section and an upper absorption spraying section) and demisting pretreatment, and the purification efficiency of the methanol and the ethyl acetate can reach more than 99 percent.
Claims (10)
1. The utility model provides a multistage series connection of space saving type absorbs preprocessing device which characterized in that:
comprises a tower body, a plurality of spray absorption sections and a plurality of cyclone units;
the bottom of the side surface of the tower body is provided with an air inlet, and the top of the tower body is provided with an air outlet;
each spray absorption section comprises at least one group of spray packing components; the spraying filler component comprises a spraying filler layer and a filler spraying device; the spraying filler layer is transversely arranged in the tower body; the filler spraying device is arranged above the spraying filler layer and can spray absorption liquid to the spraying filler layer;
the spraying filler components of the spraying absorption sections are sequentially arranged from bottom to top;
the spraying filler layer of the lowest spraying absorption section is positioned above the air inlet of the tower body;
the rotational flow unit is arranged between two adjacent spraying absorption sections;
the rotational flow unit comprises a rotational flow layer and a rotational flow spraying device;
the cyclone layer comprises a cyclone shell fixed in the tower body and a plurality of cyclone blades fixed in the cyclone shell at intervals, and a cyclone air inlet is formed in the bottom of the cyclone shell; the top of the cyclone shell is provided with a liquid guiding edge, and the liquid guiding edge is provided with a plurality of liquid guiding ports; the cyclone layer is also provided with an absorption liquid return pipe, and the plurality of liquid guide ports are communicated with the absorption liquid return pipe through liquid guide pieces;
the rotational flow spraying device is arranged above the rotational flow layer and can spray absorption liquid to the rotational flow layer.
2. The space-saving multistage series absorption pretreatment apparatus according to claim 1, characterized in that:
wherein, the rotational flow unit also comprises a rotational flow circulating water tank;
the absorption liquid return pipe is connected with the rotational flow circulating water tank;
the rotational flow circulating water tank is connected with a rotational flow circulating water pump, and is connected with each filler spraying device of the spraying absorption section above the rotational flow unit and the rotational flow spraying device of the rotational flow unit through the rotational flow circulating water pump and a pipeline.
3. The space-saving multistage series absorption pretreatment apparatus according to claim 2, characterized in that:
the rotational flow circulating water tank is arranged outside the tower body, and the arrangement position of the rotational flow circulating water tank is lower than the rotational flow layer of the rotational flow unit.
4. The space-saving multistage series absorption pretreatment apparatus according to claim 1, characterized in that:
the device also comprises a bottom circulating water tank;
the bottom circulating water tank is arranged on one side of the bottom of the tower body, is communicated with the bottom of the tower body and collects absorption liquid flowing down from the spraying absorption section at the bottom.
5. The space-saving multistage series absorption pretreatment apparatus according to claim 4, characterized in that:
the bottom circulating water tank is connected with a bottom circulating water pump, and the bottom circulating water tank is connected with each filler spraying device of the bottommost spraying absorption section through the bottom circulating water pump and a pipeline.
6. The space-saving multistage series absorption pretreatment apparatus according to claim 1, characterized in that:
also comprises a demisting filler layer;
the demisting filler layer is arranged in the tower body and is positioned above the plurality of spraying absorption sections.
7. The space-saving multistage series absorption pretreatment apparatus according to claim 1, characterized in that:
the liquid guide part of the rotational flow layer is composed of a funnel part and a pipe body part which are continuously communicated, the funnel part is connected with the corresponding liquid guide port, and the pipe body part is connected with the absorption liquid return pipe;
the liquid guide piece is fixed on the outer wall of the cyclone shell.
8. The space-saving multistage series absorption pretreatment apparatus according to claim 1, characterized in that:
the filler spraying device and the rotational flow spraying device are both composed of a spraying pipe and a plurality of spray heads arranged on the spraying pipe; the spray pipe is fixedly arranged in the tower body.
9. The space-saving multistage series absorption pretreatment apparatus according to claim 6, characterized in that:
the spray packing layer and the demisting packing layer are both composed of a grating baffle and packing, the grating baffle is fixed in the tower body, and the packing is placed on the grating baffle;
the packing of the spraying packing layer is pall ring packing or step ring packing;
the filler of the demisting filler layer is a PP baffle plate or a metal wire mesh.
10. The space-saving multistage series absorption pretreatment apparatus according to claim 1, characterized in that:
wherein, the tower body lateral wall is equipped with a plurality of sight glasses and access hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222976662.5U CN218834064U (en) | 2022-11-09 | 2022-11-09 | Space-saving multistage series absorption pretreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222976662.5U CN218834064U (en) | 2022-11-09 | 2022-11-09 | Space-saving multistage series absorption pretreatment device |
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| Publication Number | Publication Date |
|---|---|
| CN218834064U true CN218834064U (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222976662.5U Active CN218834064U (en) | 2022-11-09 | 2022-11-09 | Space-saving multistage series absorption pretreatment device |
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| Country | Link |
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| CN (1) | CN218834064U (en) |
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2022
- 2022-11-09 CN CN202222976662.5U patent/CN218834064U/en active Active
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