CN116407920B - Adsorption tower - Google Patents
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- CN116407920B CN116407920B CN202310347979.9A CN202310347979A CN116407920B CN 116407920 B CN116407920 B CN 116407920B CN 202310347979 A CN202310347979 A CN 202310347979A CN 116407920 B CN116407920 B CN 116407920B
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 165
- 230000007246 mechanism Effects 0.000 claims abstract description 227
- 238000000746 purification Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 74
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 239000003463 adsorbent Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 238000004088 simulation Methods 0.000 description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 7
- 239000012530 fluid Substances 0.000 description 7
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0423—Beds in columns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention relates to the technical field of gas purification, and particularly discloses a flexible and efficient adsorption tower, which comprises a tower body, and an adsorption mechanism, a baffling mechanism and a uniform flow mechanism which are arranged in the tower body; the top of the tower body is provided with an air flow inlet, the bottom of the tower body is provided with an air flow outlet, the side wall of the tower body is provided with a plurality of loading and unloading ports, and a plurality of adsorption mechanisms are connected with the tower body through the loading and unloading ports in a plugging manner; a first gap is reserved between adjacent adsorption mechanisms along the axis direction of the tower body, a baffling mechanism is arranged on the first gap, and one side of the baffling mechanism adjacent to the inner wall of the tower body is connected with a uniform flow mechanism; the top of the uniform flow mechanism is provided with a plurality of uniform flow inlets which are aligned with the space between the adsorption mechanism and the inner wall of the tower body, the wall surface of the uniform flow mechanism adjacent to the first gap is provided with a plurality of first uniform flow outlets, and the plurality of uniform flow inlets are communicated with the plurality of first uniform flow outlets. The problems that the existing adsorption tower cannot be provided with uniform air flow and long gas adsorption time at the same time are thoroughly solved through the cooperation of the baffling mechanism and the uniform flow mechanism.
Description
Technical Field
The invention relates to the technical field of gas purification, in particular to an adsorption tower.
Background
The landfill waste can release a large amount of landfill gas due to the degradation effect of microorganisms, and in the process of preparing natural gas by purifying the landfill gas, the existence of sulfur-containing gas can corrode pipelines, so that the service life of equipment is reduced, and leakage and emission can pollute the environment and affect biological safety, so that the elimination of the sulfur-containing gas is a key ring of landfill gas utilization.
Most of the existing factories use a filler type adsorption technology to eliminate sulfur-containing toxic gas in landfill gas, but the conventional filler type adsorption tower has the problems of low desulfurization efficiency, complicated material changing mode and the like. The traditional packing type adsorption tower internal structure is simpler, adopts integral type successive layer packing mode more, and during the use, the flow distribution after easily appearing gas entering adsorption tower is inhomogeneous, and when the gas velocity of flow was too fast, still there was some gas to fail to fully contact with the adsorbent just wash out the adsorption tower export, and the inhomogeneous gas flow of long-time can lead to adsorbent life to reduce so that frequent change, finally led to the fact the problem that adsorption efficiency is low and with high costs.
Aiming at the problem of air flow uniformity, the prior art can select to arrange a simple porous even air flow guiding plate at the position of the air flow inlet just entering the adsorption tower, namely a single structure with a single upper surface and a plurality of outlets on the lower surface, and the problem of short contact time of the adsorbent and the air is still existed although the air flow uniformity is improved, so that the even air flow guiding plate can hardly be singly adopted; aiming at the problem of adsorption time, a lot of people propose to increase the adsorption time of air flow in the tower by adding baffle plate structures in the adsorption tower, so that the adsorption efficiency is improved, but the uniformity of the air flow cannot be regulated; the prior art has not yet been provided with a device capable of simultaneously solving the problems of air flow uniformity and adsorption time increase, because the even air flow guiding plate at the air flow inlet can waste part of the space of the adsorbent, and the condition of the loading and unloading mode of the adsorbent is complicated, for example, the adsorbent can be blocked in the channel of the even air flow guiding plate, so that the matching effect of the air flow guiding plate and the even air flow guiding plate is invalid, and therefore, the device capable of simultaneously solving the problems of air flow uniformity and adsorption time increase has not yet been provided.
In view of the above, it is important to develop an adsorption tower that has uniform gas flow and long gas adsorption time.
Disclosure of Invention
The invention aims to provide a flexible and efficient adsorption tower, which solves the problems that the existing adsorption tower cannot be provided with uniform air flow and long gas adsorption time.
In order to solve the technical problems, the invention provides a flexible and efficient adsorption tower, which comprises a tower body, and an adsorption mechanism, a baffling mechanism and a uniform flow mechanism which are arranged in the tower body; the top of the tower body is provided with an air flow inlet, the bottom of the tower body is provided with an air flow outlet, the side wall of the tower body is provided with a plurality of loading and unloading ports, and a plurality of adsorption mechanisms are connected with the tower body through a plurality of loading and unloading ports in a plug-in manner; a first gap is reserved between adjacent adsorption mechanisms along the axial direction of the tower body, a baffle mechanism is arranged on the first gap, and one side, adjacent to the inner wall of the tower body, of the baffle mechanism is connected with the uniform flow mechanism; the top of the uniform flow mechanism is provided with a plurality of uniform flow inlets, the uniform flow inlets are aligned to the space between the adsorption mechanism and the inner wall of the tower body, the wall surface, adjacent to the first gap, of the uniform flow mechanism is provided with a plurality of first uniform flow outlets, and the uniform flow inlets are communicated with the first uniform flow outlets.
In one embodiment, two side walls of the uniform flow mechanism are provided with a plurality of second uniform flow outlets, and the second uniform flow outlets are communicated with the uniform flow inlets and the first uniform flow outlets.
In one embodiment, a plurality of uniform flow channels are arranged in the uniform flow mechanism, the uniform flow channels are respectively communicated with a plurality of uniform flow inlets and a plurality of first uniform flow outlets, and the uniform flow channels adjacent to the side wall of the uniform flow mechanism are communicated with a plurality of second uniform flow outlets.
In one embodiment, the uniform flow channels are vertically arranged, and a plurality of uniform flow channels are equidistantly arranged along the length direction of the uniform flow mechanism.
In one embodiment, the plurality of uniform flow inlets are uniformly arranged, the plurality of first uniform flow outlets are uniformly arranged, and the plurality of second uniform flow outlets are uniformly arranged.
In one embodiment, the aperture of the uniform flow inlet is larger than the aperture of the first uniform flow outlet, and the aperture of the uniform flow inlet is larger than the aperture of the second uniform flow outlet.
In one embodiment, the baffle mechanism comprises a plurality of transverse baffle layers, wherein a plurality of transverse baffle layers are arranged in a staggered manner, and a second gap is reserved between every two adjacent baffle layers.
In one embodiment, each layer of the baffle layer comprises a plurality of transverse baffles, the transverse baffles are arranged along the inserting and pulling direction of the adsorption mechanism, and a third gap is reserved between every two adjacent transverse baffles.
In one embodiment, the cross section of the transverse baffle plate is of a Z-shaped structure; the transverse baffle has a transverse distance greater than a vertical distance of the transverse baffle.
In one embodiment, vertical drainage plates are arranged between adjacent uniform flow mechanisms along the axial direction of the tower body.
The beneficial effects of the invention are as follows:
because the first gaps are reserved between the adjacent adsorption mechanisms along the axial direction of the tower body, the uniform flow mechanisms are arranged on two sides of the first gaps, a plurality of uniform flow inlets are arranged at the top of the uniform flow mechanisms and are aligned with the space between the adsorption mechanisms and the inner wall of the tower body, and the uniform flow inlets are communicated with the first uniform flow outlets, when the uniform flow mechanism is used, sulfur-containing gas can be shunted to two sides of the adsorption mechanisms after passing through the surface of the adsorption mechanisms, the shunted sulfur-containing gas can enter the uniform flow mechanisms through the uniform flow inlets, the uniform flow mechanisms can provide buffer effect for the entering gas flow, and the uniform flow outlet and the change of the gas flow direction are carried out through the first uniform flow outlets, so that the phenomenon of uneven flow distribution of the gas flow which is directly fed in and directly out after the gas flow is shunted is avoided, the contact area and effect of the gas flow and the adsorption mechanisms can be improved, and more sufficient contact can be realized.
The first gap is provided with the flow deflecting mechanism, two sides of the flow deflecting mechanism are connected with the flow homogenizing mechanism, and a plurality of first flow homogenizing outlets are arranged on the wall surface of the flow homogenizing mechanism adjacent to the first gap, so that when the gas flow homogenizing device is applied, gas flowing out of the plurality of first flow homogenizing outlets forms a gas flow layer channel on the plurality of flow deflecting mechanisms, the time that the gas is adsorbed in the tower body is greatly prolonged, and the adsorption efficiency is improved.
And because the side wall of the tower body is provided with a plurality of loading and unloading ports, and a plurality of adsorption mechanisms are connected with the tower body in a plugging manner through a plurality of loading and unloading ports, the operation of loading and unloading the adsorption mechanisms is simple and convenient when the adsorption mechanism is applied, and the site space can be saved.
In summary, the uniform flow mechanism is disposed at two sides of the first gap, so as to buffer the gas split from the adsorption mechanism, and uniformly flow the buffered gas back to the first gap, so that the adsorption efficiency of the adsorption mechanism is improved by the uniform gas flow; the gas flowing out of the uniform flow mechanism forms a gas flow layer channel on the baffling mechanism, so that the gas adsorption time is increased, and the problems that the existing adsorption tower cannot be provided with uniform gas flow and long gas adsorption time at the same time are thoroughly solved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in 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 that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a structural elevation view of the overall appearance provided by the preferred embodiment of the present invention;
FIG. 2 is a structural side view of the overall appearance provided by the preferred embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of an internal structure provided by a preferred embodiment of the present invention;
FIG. 4 is a schematic structural view of a uniform flow mechanism according to a preferred embodiment of the present invention;
FIG. 5 is a schematic diagram showing the cooperation of the flow homogenizing mechanism and the baffle structure according to the preferred embodiment of the present invention;
FIG. 6 is a schematic diagram II of the cooperation of the flow homogenizing mechanism and the baffle structure according to the preferred embodiment of the present invention;
FIG. 7 is a schematic structural view of a vertical drainage plate according to the preferred embodiment of the present invention;
FIG. 8 is a schematic illustration of the results of a simulation verification of the hydrodynamic method of the present application provided by the preferred embodiment of the present invention;
fig. 9 is a schematic diagram showing the results of the simulation verification of the hydrodynamic method of the comparative example provided in the preferred embodiment of the present invention.
The reference numerals are as follows:
1. a tower body; 10. an air flow inlet; 11. an air flow outlet; 12. a loading and unloading port; 13. an embedded clamping groove;
2. an adsorption mechanism; 20. a first gap; 21. an activated carbon core rod;
3. a baffle mechanism; 30. a lateral refractive layer; 300. a transverse baffle; 301. a third gap; 31. a second gap;
4. a uniform flow mechanism; 40. a uniform flow inlet; 41. a first uniform flow outlet; 42. a second uniform flow outlet; 43. a uniform flow channel;
5. vertical drainage plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
In the prior art, there are two major problems with adsorption towers; firstly, the problem of uneven flow distribution of gas after entering an adsorption tower; secondly, the problem of insufficient adsorption time caused by short residence time after the gas enters the adsorption tower.
In order to solve the problems, the invention improves the adsorption tower through the technical characteristics of two directions, firstly, the uniform flow mechanisms are arranged at the two sides of a first gap formed by the adsorption mechanism so as to realize the purpose of uniform gas flow distribution; and secondly, a baffle mechanism is arranged on a first gap formed by the adsorption mechanism, so that the aim of greatly increasing the gas adsorption time is fulfilled.
Specifically, the invention provides a flexible and efficient adsorption tower, and the preferred embodiment of the adsorption tower is shown in fig. 1 to 9, and comprises a tower body 1, and an adsorption mechanism 2, a baffling mechanism 3 and a uniform flow mechanism 4 which are arranged in the tower body 1; the top of the tower body 1 is provided with an air flow inlet 10, the bottom of the tower body 1 is provided with an air flow outlet 11, the side wall of the tower body 1 is provided with four loading and unloading ports 12, and the four adsorption mechanisms 2 are connected with the tower body 1 in a plugging manner through the four loading and unloading ports 12; along the axis direction of the tower body 1, a first gap 20 is reserved between the adjacent adsorption mechanisms 2, a baffling mechanism 3 is arranged on the first gap 20, and one side of the baffling mechanism 3 adjacent to the inner wall of the tower body 1 is connected with a uniform flow mechanism 4.
As shown in fig. 3, the first gap 20 refers to a gap channel formed by the adsorption mechanisms 2 adjacent to each other vertically when the four adsorption mechanisms 2 are vertically arranged; the baffle mechanisms 3 are arranged in the first gaps 20 adjacent to the four adsorption mechanisms 2, the uniform flow mechanisms 4 are arranged on two sides of the first gaps 20, so that the air flow flowing through the first adsorption mechanisms 2 can be homogenized in the uniform flow mechanisms 4, the flowing direction of the air is changed to enable the flowing direction of the air to be aligned to the first gaps 20, the contact time and the contact area between the air and the adsorption mechanisms 2 are increased, the problem that the air flow in the prior art directly enters and directly exits after flowing through the first adsorption mechanisms 2 is avoided, specifically, the air flow is divided into two air flows when the air flow contacts with the first adsorption mechanisms 2, the time of the air stay in a tower is prolonged by the gap between the first adsorption mechanisms 2 and the tower body 1, the problems that the air flow distribution is uneven and the air flow speed is too fast due to the uniform air flow distribution of the uniform flow mechanisms 4 are solved, and the problems of the two problems are finally caused that the contact time is short, the contact non-uniformity and the contact area is small, and the adsorption efficiency is reduced.
When the adsorption device is applied, after the air flow enters from the air flow inlet 10 at the top of the tower body 1, the air flow passes through the surface of the adsorption mechanism 2, sulfur-containing substances in the air flow can be absorbed by the adsorption mechanism 2, and the air flow can be split at two sides of the adsorption mechanism 2; the split air flows into the uniform flow mechanism 4, the air flows out uniformly in the uniform flow mechanism 4, and the outflow direction of the air is aligned to the first gap 20; the baffle mechanism 3 arranged on the first gap 20 can enable the air flow to form an air flow layer channel on the first gap 20, the air flow in the air flow channel flows to the next adsorption mechanism 2, the above process is repeated until the air flows out from the air flow outlet 11 at the bottom of the tower body 1, the air flow is buffered and flow distribution is homogenized in the homogenizing mechanism 4, the homogenized air flow is contacted with the adsorption mechanism 2, the adsorption area and the adsorption efficiency are improved, and the air flow channel is formed on the baffle mechanism 3, so that the stay adsorption time of the air in the tower body 1 is greatly prolonged, the tower body 1 of the adsorption tower simultaneously has the characteristics of uniform air flow and long air adsorption time, and the purification adsorption capacity of the adsorption tower is improved.
Referring to fig. 1 and 2, referring to the above-mentioned tower 1, the diameter of the tower 1 is 2m, the height is 6m, the aperture of the air inlet 10 at the top of the tower 1 and the aperture of the air outlet 11 at the bottom of the tower 1 are both 0.6m, the heights of the air inlet 10 and the air outlet 11 are both 0.2m, four loading and unloading ports 12 are arranged on the side wall of the tower 1, the four loading and unloading ports 12 are uniformly arranged vertically and equidistantly, and an embedded clamping groove 13 is further arranged in the tower 1 along the plugging direction, and the embedded clamping groove 13 is used for supporting the adsorption mechanism 2.
Wherein, adsorption mechanism 2 accessible loading and unloading mouth 12 and draw-in groove detachable are fixed in tower body 1, and still set up a pair of uniform flow mechanism 4 in adsorption mechanism 2's both sides, be equipped with baffling mechanism 3 on adjacent adsorption mechanism 2 formed first clearance 20, the compact space of flexible application, avoided prior art because of uniform flow mechanism 4 and baffling mechanism 3's setting, cause adsorption mechanism 2's loading and unloading mode complicacy, for example because of adsorption mechanism 2 loading and unloading's complex structure leads to adsorption mechanism 2 card on the passageway of uniform gas drainage plate or card on the guide plate, finally lead to the guide plate, uniform gas drainage plate and adsorption mechanism 2 cooperation inefficacy problem, adsorption mechanism 2 both sides arrange uniform flow mechanism 4 in this application, adsorption mechanism 2's adjacent clearance arranges baffling mechanism 3, the steam flow mechanism is simple in structure, loading and unloading mode is simple and convenient, the problem that exists among the prior art has been solved.
It should be noted that the specification and the size of the tower 1 are preferred in this embodiment, and other specifications and sizes can be used according to the requirements of those skilled in the art.
When the adsorption device is applied, a user loads or unloads the adsorption mechanism 2 into or from the tower body 1 through the loading and unloading port 12, after the adsorption mechanism 2 enters the loading and unloading port 12, the adsorption mechanism 2 is clamped in the embedded clamping groove 13, so that the adsorption mechanism 2 is simply and conveniently loaded and unloaded, and the problem that the adsorption mechanism 2 can interfere with the uniform flow mechanism 4 or the baffle mechanism 3 is avoided.
Referring to fig. 3, regarding the above-mentioned adsorption mechanisms 2, four adsorption mechanisms 2 all adopt activated carbon core rods 21 with a cylindrical structure with a diameter of 1m and a length of 1.6m, the four adsorption mechanisms 2 all realize plug connection through the loading and unloading ports 12 of the tower body 1, the four adsorption mechanisms 2 have the same distance difference in vertical distance, the four adsorption mechanisms 2 form a first gap 20 in vertical distance, and the four adsorption mechanisms 2 are all arranged transversely (radial arrangement of the tower body 1).
It should be noted that, in this example, the specification and the size of the activated carbon core rod 21 are preferably selected, and other specification and sizes can be used according to the requirements of those skilled in the art; the adsorption rod materials used in the adsorption mechanism 2 include, but are not limited to, activated carbon, and can be selected by those skilled in the art according to their own practical needs.
When the adsorption device is applied, the four adsorption mechanisms 2 have the same distance difference in vertical distance, so that after entering air flow is in contact with the first adsorption mechanism 2, enough space is available for contact with the second adsorption mechanism 2, and the gas adsorption efficiency of the adsorption mechanism 2 is improved.
For the above-mentioned flow homogenizing mechanism 4, referring to fig. 3 to 6, the flow homogenizing mechanisms 4 are disposed on two sides of the first gap 20 formed by the adsorption mechanisms 2 adjacent to each other, i.e. the flow homogenizing mechanisms 4 on two sides of the same gap are disposed opposite to each other, four flow homogenizing inlets 40 are disposed at the top of the flow homogenizing mechanism 4, the four flow homogenizing inlets 40 are aligned with the space between the adsorption mechanism 2 and the inner wall of the tower 1, a plurality of first flow homogenizing outlets 41 are disposed on the wall surface of the flow homogenizing mechanism 4 adjacent to the first gap 20, and the four flow homogenizing inlets 40 are communicated with the plurality of first flow homogenizing outlets 41.
Further, in order to achieve the function of homogenizing the airflow distribution, referring to fig. 4, four homogenizing inlets 40 are uniformly arranged along the length direction of the homogenizing mechanism 4 at equal intervals, a plurality of first homogenizing outlets 41 are uniformly arranged in an array, and four rows are arranged at equal distances from the four homogenizing inlets 40, and each row has four first homogenizing outlets 41.
Wherein, four uniform flow inlets 40 are aligned with the space between the adsorption mechanism 2 and the inner wall of the tower body 1, namely, a uniform flow mechanism 4 is arranged at the gap between the adsorption mechanism 2 and the inner wall of the tower body 1, so that the gas flow adsorbed and split by the first adsorption mechanism 2 can enter the uniform flow mechanism 4 through the four uniform flow inlets 40 for buffering; the first uniform flow outlets 41 which are uniformly distributed are aligned with the first gap 20, the bottom of the previous adsorption mechanism 2 and the top of the next adsorption mechanism 2, the air flow is buffered in the uniform flow mechanism 4, and the air flow is shunted and flows out into the first gap 20 through the first uniform flow outlets 41, so that the air flow direction is effectively changed, the purpose of re-contacting the air flow with the next adsorption mechanism 2 is realized, and the purpose of uniform re-distribution of the air flow is also realized.
It should be noted that, as shown in fig. 3, the structures of the six flow homogenizing mechanisms 4 adjacent to the inner wall of the tower body 1 are plate arch structures, and the curvature of the arch structures is designed according to the curvature of the inner wall of the tower body 1, so as to ensure that the flow homogenizing mechanisms 4 can abut against the inner wall of the tower body 1, so as to maximize the inner space of the flow homogenizing mechanisms 4.
In application, the gas flow absorbed and split by the first absorption mechanism 2 enters the inside of the uniform flow mechanism 4 through four uniformly arranged uniform flow inlets 40, the gas flow distribution and buffering are carried out in the inside of the uniform flow mechanism 4, then the gas flow is split and flows back into the first gap 20 through a plurality of uniformly arranged first uniform flow outlets 41, the original straight-in and straight-out gas flow direction is changed, the buffering effect of the gas flow in the uniform flow mechanism 4 prolongs the time of being absorbed in the tower, and the contact area and efficiency of the gas flow and the absorption mechanism 2 are improved after the gas flow is uniformly redistributed in the uniform flow mechanism 4, so that the gas and the absorption mechanism 2 can be in more full contact.
Further, in order to enhance the flow dividing function of the flow-homogenizing mechanism 4, referring to fig. 4 and 5, three second flow-homogenizing outlets 42 are disposed on two side walls of the flow-homogenizing mechanism 4, the three second flow-homogenizing outlets 42 are uniformly and equidistantly disposed, and the plurality of second flow-homogenizing outlets 42 are communicated with the plurality of flow-homogenizing inlets 40 and the first flow-homogenizing outlets 41.
The second uniform flow outlets 42 are aligned to the wall surface of the tower body 1, and the air flow flowing out from the second uniform flow outlets 42 moves downwards along the inner wall surface of the tower body 1, namely, the air flow is spirally distributed, the air flow distribution of the propeller increases the time for the air flow to stay in the tower body 1, namely, the adsorption time of the air flow and the adsorption mechanism 2 is increased, and the adsorption efficiency is improved.
When the device is used, after the air flow entering from the uniform flow inlet 40 is buffered in the uniform flow mechanism 4, the air flow can flow out of the first uniform flow outlet 41 to the first gap 20 and also flow out of the second uniform flow outlet 42 to the inner wall of the tower body 1, so that the purpose of uniform redistribution of the air flow is achieved, and meanwhile, the possibility of deposition of the air flow in the uniform flow mechanism 4 is avoided.
Further, in order to avoid the turbulence of the gas in the flow homogenizing mechanism 4, referring to fig. 4 and 5, four flow homogenizing channels 43 are disposed in the flow homogenizing mechanism 4, and the four flow homogenizing channels 43 are correspondingly connected to the four flow homogenizing inlets 40 and the plurality of first flow homogenizing outlets 41, and the flow homogenizing channels 43 adjacent to the side walls of the flow homogenizing mechanism 4 are correspondingly connected to the three second flow homogenizing outlets 42 on each side wall.
When the device is applied, the air flows entering the uniform flow mechanism 4 from the four uniform flow inlets 40 respectively enter the four uniform flow channels 43 to uniformly flow, and the air flows entering the four uniform flow inlets 40 are separated from each other and are not mixed with each other, so that the air flow distribution is homogenized, and the phenomenon that the air flows entering the uniform flow mechanism 4 form turbulent flow inside the uniform flow mechanism 4 is avoided.
Further, in order to achieve the ordered flow of the air flow in the uniform flow channels 43, referring to fig. 4, four uniform flow channels 43 are vertically arranged, and four uniform flow channels 43 are equidistantly arranged along the length direction of the uniform flow mechanism 4.
Wherein the bottom of the vertically arranged uniform flow channel 43 is flush with the bottom of the first uniform flow outlet 41 at the bottom of each row, and by such arrangement, the air flow entering the uniform flow channel 43 will directly flow from the first uniform flow outlet 41 and will not accumulate at the bottom of the uniform flow channel 43.
In the application, the air flow entering the four uniform flow channels 43 moves vertically and flows out from the first uniform flow outlets 41 respectively connected with the uniform flow channels 43, so that the distribution of the air flow is ordered and homogenized.
Further, in order to achieve the purpose of accelerating the flow velocity of the air flow in the uniform flow mechanism 4, referring to fig. 4 and 5, the aperture of the uniform flow inlet 40 is larger than the aperture of the first uniform flow outlet 41, and the aperture of the uniform flow inlet 40 is larger than the aperture of the second uniform flow outlet 42, by such arrangement, the aperture of the uniform flow inlet 40 is larger than the aperture of the first uniform flow outlet 41 and the apertures of the second uniform flow outlets 42 on both sides, i.e. the surface area of the fluid acting when the fluid passes through a narrow place is relatively small, the compression pressure of the fluid is increased, so that the velocity of the fluid is increased, and the contact between the air flow and the adsorption mechanism 2 is more thorough.
The aperture of the first uniform flow outlet 41 and the second uniform flow outlet 42 is smaller than the aperture of the uniform flow inlet 40, but is greater than or equal to 2/3 of the aperture of the uniform flow inlet 40, and the specification size in this example is a preferred mode, so long as the arrangement mode that the aperture of the uniform flow inlet 40 is greater than the aperture of the first uniform flow outlet 41 and the aperture of the second uniform flow outlet 42 is met, and the person skilled in the art can select according to the actual requirement.
It is specifically noted that the number of uniform flow inlets 40, the number of first uniform flow outlets 41 and the number of second uniform flow outlets 42 in the uniform flow mechanism 4 may be adjusted according to the needs of those skilled in the art.
In the application, the airflow entering from the uniform flow inlet 40 flows orderly in the uniform flow channel 43, and the apertures of the first uniform flow outlet 41 and the second uniform flow outlet 42 are small, so that the flow rate of the airflow entering the uniform flow mechanism 4 to the first uniform flow outlet 41 and the second uniform flow outlet 42 is increased, the contact area between the outgoing airflow and the next adsorption mechanism 2 is increased, and the adsorption efficiency is further improved.
With respect to the above-mentioned baffle mechanism 3, referring to fig. 6, the baffle mechanism 3 is connected between the oppositely disposed flow homogenizing mechanisms 4, the baffle mechanism 3 includes multiple layers of transverse baffle layers 30, the multiple layers of transverse baffle layers 30 are staggered, and a second gap 31 is left between adjacent baffle layers, by such arrangement, since the side of the baffle mechanism 3 adjacent to the inner wall of the tower body 1 is connected with the flow homogenizing mechanism 4, that is, the first flow homogenizing outlet 41 of the flow homogenizing mechanism 4 is aligned with the baffle mechanism 3, the air flow flowing out from the first flow homogenizing outlet 41 directly enters the baffle mechanism 3, and forms air flow channels on the transverse baffle layers 30, and longer flow paths are required for the air flow in each layer of air flow channels to the next layer or to the adsorption mechanism 2, so that the air flow channels greatly increase the residence time of the air flow in the adsorption tower, so as to improve the adsorption efficiency.
Each layer includes three transverse baffles 300, the three transverse baffles 300 are arranged along the insertion and extraction direction of the adsorption mechanism 2, and a third gap 301 is left between adjacent transverse baffles 300, so that through the arrangement, each layer of transverse baffles 30 is provided with a third gap 301 which can enable an air supply channel to flow to the next layer, and long-time accumulation of air flow is avoided.
It should be noted that the cross section of the transverse baffle 300 has a Z-shaped structure, and the transverse distance of the transverse baffle 300 is greater than the vertical distance of the transverse baffle 300, and by such arrangement, the transverse baffle 300 has a larger cross-sectional area in the airflow direction, so that the airflow flowing out from the first uniform flow outlet 41 forms an airflow channel on the transverse baffle 300.
Specifically, the second gap 31 refers to a gap channel formed between adjacent baffle plates in the vertical arrangement, and the third gap 301 refers to a gap channel formed by adjacent transverse baffle plates 300 in the transverse arrangement; and the number of transverse baffles 300 arranged per layer can be adjusted as desired by those skilled in the art.
In application, the air flow flowing out from the first uniform flow outlet 41 of the uniform flow mechanism 4 forms an air flow channel in the transverse flow-folding layer 30, so that the residence time of the air flow in the adsorption tower is greatly increased to improve the adsorption efficiency of the adsorption mechanism 2.
In addition to the above mechanisms, in order to realize the supporting function of the uniform flow mechanism 4, referring to fig. 7, vertical drainage plates 5 are disposed between adjacent uniform flow mechanisms 4 along the axial direction of the tower body 1, and by such arrangement, the balance in the whole adsorption tower body 1 is improved, and the service life of the adsorption tower is prolonged.
From the above, it can be known that the basic structure and principle of the present application, in order to more intuitively illustrate the present invention, the adsorption effect of the present invention is simulated and verified by using a computational fluid mechanical method, in order to simplify the numerical calculation process and save calculation resources, the structure with smaller flow is ignored, and the contact area of the adsorbent and the airflow is focused, so that the adsorption effect of the present invention is more vividly and specifically shown.
Referring to fig. 8 and 9, a comparative example similar to the present example was provided, the comparative example being different in that the baffle mechanism 3 was not provided, and other settings were the same as the present example, and specific simulation steps were as follows:
modeling using Ansys space software; the method is characterized in that an Ansys mesh is led in to divide grids, and a tetrahedral unstructured grid is adopted because a uniform gas drainage plate has a certain curvature and gaps exist at the boundary; and importing the divided grid model into fluent for numerical simulation processing.
Setting the inlet flow q=11000 m of the fluid 3 /h＝3.06m 3 /s；
Setting the gas inlet flow v=3.06/S An inlet ＝3.06/πr 2 ＝3.06/3.14*0.2 2 ＝24.363m/s；
The most widely used Standard k-e turbulence model with high stability, economy and accuracy is adopted, and the inlet fluid type is H 2 S, through fitting calculation, adsorption parameters (viscous drag coefficient, inertial drag coefficient and porosity) of the simulated activated carbon are obtained, and four activated carbon core rods 21 are set as porous medium areas.
As a result of the simulation in the example of the present application, please refer to fig. 8; as a result of the simulation of the comparative example, please refer to fig. 9; in the simulation result, the activated carbon plug 21 in the adsorption mechanism 2 was used as the porous medium region, the light-colored portion showed a high gas flow rate, the area of the gas in contact with the porous medium region was large, the adsorption effect of the gas with the adsorption mechanism 2 was good, the dark-colored portion showed a low flow rate, the gas was not in contact with or less in contact with the porous medium region, and the adsorption effect of the gas with the adsorption mechanism 2 was poor.
The comparative example has been found to have a reduced contact area with the porous medium region as compared with the simulation results of the present example, since the inlet gas flow is split into two streams when in contact with the first adsorption means 2 (activated carbon core rod 21), and the gap is free from the baffle means 3 or the uniform flow means 4 to prolong the time in which the gas stays in the column, while the inlet gas flow rate is too fast, thus resulting in a short contact time between the adsorbent and the gas, resulting in a decrease in the adsorbent efficiency.
The embodiment and the comparative example prove that the baffle plate and the even gas flow guiding plate are necessary to exist simultaneously, the even gas mechanism is arranged to guide the flowing direction of the gas and homogenize the gas flow distribution so as to increase the contact area of the gas and the adsorption mechanism 2, the baffle mechanism 3 is arranged to enable the gas flow to form a gas flow channel so as to prolong the contact time of the gas and the adsorbent, the even gas mechanism and the baffle mechanism 3 are matched to realize the efficient adsorption of the gas containing sulfur components in the landfill gas, and meanwhile, the flexible arrangement of the internal structure greatly reduces the time for loading and unloading and the material cost.
In summary, compared with the traditional packed adsorption tower or the packed adsorption tower with the baffle plates, the invention skillfully utilizes the internal structure of the adsorption tower, and adopts the gas homogenizing mechanism and the baffle mechanism 3 as a mode for improving the gas flow, and adopts the active carbon core rod 21 as an adsorbent in the adsorption mechanism 2, so that the mode for loading and unloading materials is more convenient.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (6)
1. An adsorption tower is characterized in that,
comprises a tower body, an adsorption mechanism, a baffling mechanism and a uniform flow mechanism which are arranged in the tower body;
the top of the tower body is provided with an air flow inlet, the bottom of the tower body is provided with an air flow outlet, the side wall of the tower body is provided with a plurality of loading and unloading ports, and a plurality of adsorption mechanisms are connected with the tower body through a plurality of loading and unloading ports in a plug-in manner;
a first gap is reserved between adjacent adsorption mechanisms along the axial direction of the tower body, a baffle mechanism is arranged on the first gap, and one side, adjacent to the inner wall of the tower body, of the baffle mechanism is connected with the uniform flow mechanism;
the uniform flow mechanisms are arranged on two sides of the first gap formed by the adsorption mechanisms which are adjacent up and down;
the top of the uniform flow mechanism is provided with a plurality of uniform flow inlets which are aligned to the space between the adsorption mechanism and the inner wall of the tower body, the wall surface of the uniform flow mechanism adjacent to the first gap is provided with a plurality of first uniform flow outlets, and the uniform flow inlets are communicated with the plurality of first uniform flow outlets;
the flow homogenizing mechanism is connected between the oppositely arranged flow homogenizing mechanisms, the flow homogenizing mechanism comprises a plurality of layers of transverse flow-homogenizing layers, the layers of transverse flow-homogenizing layers are arranged in a staggered way, a second gap is reserved between the adjacent flow-homogenizing layers, one side of the flow-homogenizing mechanism adjacent to the inner wall of the tower body is connected with the flow-homogenizing mechanism, and the first flow-homogenizing outlet is aligned with the flow-homogenizing mechanism, so that the air flow flowing out of the first flow-homogenizing outlet directly enters the flow-homogenizing mechanism, and an air flow channel is formed on the transverse flow-homogenizing layers;
each layer of the baffle layer comprises a plurality of transverse baffle plates, the transverse baffle plates are arranged along the inserting and pulling direction of the adsorption mechanism, and a third gap is reserved between every two adjacent transverse baffle plates; the cross section of the transverse baffle plate is of a Z-shaped structure, and the transverse distance of the transverse baffle plate is larger than the vertical distance of the transverse baffle plate;
and vertical drainage plates are arranged between adjacent uniform flow mechanisms along the axial direction of the tower body.
2. An adsorption column of claim 1 wherein,
and a plurality of second uniform flow outlets are arranged on the two side wall surfaces of the uniform flow mechanism, and are communicated with the uniform flow inlets and the first uniform flow outlets.
3. An adsorption column according to claim 2 wherein,
the inner part of the uniform flow mechanism is provided with a plurality of uniform flow channels, the uniform flow channels are respectively communicated with a plurality of uniform flow inlets and a plurality of first uniform flow outlets, and the uniform flow channels adjacent to the side wall of the uniform flow mechanism are communicated with a plurality of second uniform flow outlets.
4. An adsorption column according to claim 3 wherein,
the uniform flow channels are vertically arranged, and a plurality of uniform flow channels are equidistantly arranged along the length direction of the uniform flow mechanism.
5. An adsorption column according to claim 2 wherein,
the plurality of uniform flow inlets are uniformly arranged, the plurality of first uniform flow outlets are uniformly arranged, and the plurality of second uniform flow outlets are uniformly arranged.
6. An adsorption column according to claim 2 wherein,
the aperture of the uniform flow inlet is larger than that of the first uniform flow outlet, and the aperture of the uniform flow inlet is larger than that of the second uniform flow outlet.
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