CN114618263A - Gas adsorption device, dioxin treatment system and dioxin treatment method - Google Patents
Gas adsorption device, dioxin treatment system and dioxin treatment method Download PDFInfo
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- CN114618263A CN114618263A CN202210337222.7A CN202210337222A CN114618263A CN 114618263 A CN114618263 A CN 114618263A CN 202210337222 A CN202210337222 A CN 202210337222A CN 114618263 A CN114618263 A CN 114618263A
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- 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
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Abstract
The invention discloses a gas adsorption device, a dioxin treatment system and a dioxin treatment method, and solves the technical problems of low use efficiency and high cost when active carbon adsorbs harmful gas in the prior art. A gas adsorption device comprising: the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell; the adsorption component is provided with at least two adsorption structures which are arranged at intervals, each adsorption structure is provided with a first inner cylinder, a first outer cylinder and an adsorption layer filled between the first inner cylinder and the first outer cylinder, and air holes are formed in the first inner cylinder and the first outer cylinder; the cutting structure is connected with the shell and divides the shell into a raw gas cavity communicated with the gas inlet and a purified gas cavity communicated with the gas outlet; the gas to be treated enters the original gas cavity from the gas inlet, and then enters the gas purifying cavity after passing through the adsorption layer and the first mounting hole in sequence.
Description
Technical Field
The invention relates to the technical field of gas adsorption, in particular to the technical field of activated carbon adsorption, and specifically relates to a gas adsorption device, a dioxin treatment system and a dioxin treatment method.
Background
Dioxin, i.e., 1, 4-dioxine, which is a by-product that is not industrially useful, generally speaking, the term "dioxin" in the broad sense generally refers to a derivative compound containing the aforementioned structure, and dioxin is very stable, very easily accumulated in the living body, and seriously harmful to the human body. The combustion of municipal refuse, industrial chemical wastes, automotive fuel oil, household coal and cigarette all can generate a small amount of dioxin, wherein the dioxin discharged by refuse incineration accounts for 80-90% of the total discharge amount; therefore, the dioxin in the waste incineration flue gas needs to be removed by adopting a physical or chemical method at the rear end of the waste incineration so as to reduce the emission of the dioxin to the maximum extent.
The current economic method is to use porous activated carbon to adsorb dioxin. In the prior art, activated carbon is usually filled in a filler layer of a filler tower for use, and dioxin in waste incineration flue gas is adsorbed by the activated carbon in the process that the waste incineration flue gas passes through the filler layer from bottom to top.
In order to improve the availability factor and reduce cost of active carbon, make the emission total amount of dioxin effectively reduce, firstly, need promote the area of contact of active carbon and msw incineration flue gas, make the dioxin fully adsorbed by active carbon, secondly, when promoting area of contact, need take up an area of with less equipment and reach great flue gas treatment volume, thirdly, need convenient, change active carbon fast, avoid long-time parking to cause the violent fluctuation of dioxin concentration and treatment effeciency to show the reduction. However, the packed columns of the prior art have difficulty meeting the three requirements. In addition, adsorption apparatuses for adsorbing other harmful gases such as sulfur dioxide, formaldehyde, etc. by activated carbon also have the above-mentioned three problems.
Disclosure of Invention
In a first aspect, the present invention aims to provide two gas adsorption devices to solve the technical problems of low use efficiency and high cost when the activated carbon adsorbs harmful gases in the prior art.
In order to achieve the purpose, the two gas adsorption devices provided by the invention have the following technical scheme:
a first gas adsorption apparatus comprising: the air inlet is arranged on the bottom plate of the shell, and the air outlet is arranged on the top plate of the shell; the adsorption structure is provided with a first inner cylinder, a first outer cylinder and an adsorption layer filled between the first inner cylinder and the first outer cylinder, and the first inner cylinder and the first outer cylinder are provided with air holes; the first partition plate is connected with the bottom of the adsorption structure, an air inlet channel enabling the air inlet to be communicated with the original air cavity between the first outer barrel and the shell is formed between the first partition plate and the bottom plate, and the first partition plate and the first inner barrel are surrounded to form an air purifying cavity communicated with the air outlet.
As a further improvement of the first gas adsorption device: the air inlet pipe is connected with the air inlet; and/or, still include the structure of unloading, the structure of unloading includes: the first coordination hole is arranged on the bottom plate; the second coordination hole is arranged on the first partition plate below the adsorption layer; the upper end of the discharge channel is connected with the second coordination hole, and the discharge opening at the lower end of the discharge channel penetrates through the first coordination hole and then extends out of the shell; the first cover plate is detachably connected with the discharge opening.
As a further improvement of the first gas adsorption device: the first cover plate is connected with the discharge opening through a flange; and/or the number of the discharging structures is at least two.
As a further improvement of the first gas adsorption device: the length of the air inlet pipe is greater than the length of the discharging channel extending out of the shell, the length of the air inlet pipe is 400-500 mm, and the length of the discharging channel extending out of the shell is 200-300 mm; and/or the diameter of the discharge channel is smaller than the width of the adsorption layer, the diameter of the discharge channel is 200-250 mm, and the width of the adsorption layer is 300-600 mm.
As a further improvement of the first gas adsorption device: the air outlet pipe is connected with the air outlet; and/or, the adsorption structure further comprises: the annular through hole is formed in the top plate, and the width of the annular through hole is matched with the distance between the first inner cylinder and the first outer cylinder; the second inner cylinder body is connected with the upper end of the first inner cylinder body, penetrates through the annular through hole and then extends out of the shell; the second outer cylinder body is connected with the upper end of the first outer cylinder body, penetrates through the annular through hole and then extends out of the shell; the inner side and the outer side of the plate are detachably connected with the tops of the second inner cylinder and the second outer cylinder respectively.
As a further improvement of the first gas adsorption device: the annular plate is connected with the second inner cylinder and the second outer cylinder through flanges; and/or the length of the second inner cylinder and the second outer cylinder extending into the shell is 250-350 mm.
As a further improvement of the first gas adsorption device: the length of outlet duct is greater than the length that barrel and the outer barrel of second stretch out to the casing outside in the second, and the length of outlet duct is 300 ~ 400mm, and the length that barrel and the outer barrel of second stretch out to the casing outside in the second is 150 ~ 250 mm.
As a further improvement of the first gas adsorption device: the height of the air inlet channel is 150-250 mm; the height of the first inner cylinder and the first outer cylinder is 1000-2000 mm; the first inner cylinder and the first outer cylinder are sieve plates, the aperture of each sieve plate is 2-3 mm, and the pitch of the sieve plates is 5-6 mm; the adsorption layer is formed by stacking activated carbon particles with the particle size of 3.5-4.5 mm; the width of the original air cavity is 500-700 mm; the radius of the first inner cylinder body is 800-1000 mm.
As a further improvement of the first gas adsorption device: the support is connected with the bottom plate, and the height of the support is 1500-2000 mm; and/or further comprising a handle connected with the housing.
A second gas adsorption apparatus comprising: the air conditioner comprises a shell, wherein an air inlet and an air outlet are formed in the shell; the adsorption component is provided with at least two adsorption structures which are arranged at intervals, each adsorption structure is provided with a first inner cylinder, a first outer cylinder and an adsorption layer filled between the first inner cylinder and the first outer cylinder, and air holes are formed in the first inner cylinder and the first outer cylinder; the cutting structure is connected with the shell and divides the shell into a raw air cavity communicated with the air inlet and a purified air cavity communicated with the air outlet; the gas to be treated enters the original gas cavity from the gas inlet, and then enters the gas purifying cavity after passing through the adsorption layer and the first mounting hole in sequence.
As a further improvement of the second gas adsorption device: the cutting structure comprises a transverse plate and a vertical plate which are internally connected with the shell and are connected with each other, the transverse plate is provided with the first mounting hole, an original air cavity is formed below the transverse plate and on one side of the vertical plate, a purified air cavity is formed above the transverse plate and on the other side of the vertical plate, and the air inlet and the air outlet are respectively arranged on two side surfaces of the shell which are not connected with the vertical plate; the distance between the transverse plate and the top plate of the shell is preferably 800-1200 mm, and the distance between the vertical plate and the air outlet is preferably 800-1200 mm.
As a further improvement of the second gas adsorption device: the adsorption structure further comprises a second partition plate, the second partition plate is connected with the bottom of the adsorption layer, and a space is reserved between the second partition plate and the bottom plate of the shell; and/or, the adsorption structure further comprises: the second inner cylinder body is connected with the upper end of the first inner cylinder body, penetrates through the first mounting hole and then extends to the upper part of the transverse plate; the second outer cylinder body is connected with the upper end of the first outer cylinder body, penetrates through the first mounting hole and then extends out of the transverse plate; and the inner side and the outer side of the annular plate are respectively connected with the second inner cylinder and the second outer cylinder.
As a further improvement of the second gas adsorption device: the length of the second inner cylinder body and the second outer cylinder body extending into the lower part of the transverse plate is 100-200 mm; and/or the length of the second inner cylinder body and the second outer cylinder body extending to the upper side of the transverse plate is 100-200 mm.
As a further improvement of the second gas adsorption device: still including the structure of unloading, the structure of unloading includes: the first coordination hole is arranged on the bottom plate of the shell; the second coordination hole is arranged on the second partition plate below the adsorption layer; the upper end of the discharge channel is connected with the second coordination hole, and the discharge opening at the lower end of the discharge channel penetrates through the first coordination hole and then extends out of the shell; the first cover plate is detachably connected with the discharge opening; still include the filling structure, the filling structure includes: the third coordination hole is arranged on the top plate of the shell; the fourth coordination hole is arranged on the annular plate; the lower end of the packing channel is connected with the fourth coordination hole, and the packing port at the upper end of the packing channel penetrates through the third coordination hole and then extends out of the shell; and the second cover plate is detachably connected with the filling port.
As a further improvement of the second gas adsorption device: each adsorption structure is provided with at least two discharging structures and at least two filling structures, and the discharging structures and the filling structures are preferably distributed in a staggered manner.
As a further improvement of the second gas adsorption device: the filling structure further comprises a third cover plate and a fifth coordination hole, the third cover plate is provided with the third coordination hole, the fifth coordination hole is formed in the top plate of the shell, and the third cover plate is detachably connected with the fifth coordination hole.
As a further improvement of the second gas adsorption device: the adsorption component is provided with two adsorption units distributed on two axial sides of the air inlet direction, each adsorption unit is provided with at least two adsorption structures arranged at intervals, and the distance between the adsorption units is larger than the distance between two adjacent adsorption structures in each adsorption unit; the interval of adsorption unit is preferably 700 ~ 900mm, and the interval of two adjacent adsorption structure in every adsorption unit is preferably 300 ~ 500mm, and the interval of the side of the one row of adsorption structure and the air inlet place casing that is close to the air inlet is preferably 600 ~ 800 mm.
In a second aspect, the present invention is directed to a dioxin treatment system and a dioxin treatment method, which are used to solve the technical problems of low use efficiency and high cost in the prior art when activated carbon adsorbs dioxin.
In order to achieve the above object, the technical solutions of the dioxin processing system and the dioxin processing method provided by the present invention are as follows:
a dioxin treatment system comprises the first or second gas adsorption device.
The dioxin treatment method adopts the first or second gas adsorption device or the treatment system to adsorb dioxin in gas to be treated.
Therefore, the invention has simple structure and convenient processing and manufacturing, can obviously improve the utilization rate of the active carbon in unit floor area, effectively reduces the equipment investment and the operation cost of the active carbon adsorption working section, is very suitable for the adsorption treatment of harmful gases, is especially suitable for adsorbing dioxin in waste incineration flue gas, and has strong practicability.
The invention is further described with reference to the following figures and detailed description. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to assist in understanding the invention, and are included to explain the invention and their equivalents and not limit it unduly. In the drawings:
fig. 1 is a sectional view of a first embodiment of the gas adsorption device of the present invention.
Fig. 2 is a plan view of a first embodiment of the gas adsorption device of the present invention.
Fig. 3 is a bottom view of the first embodiment of the gas adsorbing device of the present invention.
Fig. 4 is a plan view of a second embodiment of the gas adsorbing device of the present invention.
Fig. 5 is a transverse cross-sectional view of a second embodiment of the gas adsorption device of the present invention.
Fig. 6 is a vertical cross-sectional view of a second embodiment of the gas adsorption device of the present invention.
The relevant references in the above figures are:
001-original air cavity, 002-purified air cavity, 003-air inlet channel, 100-shell, 101-top plate, 102-bottom plate, 110-air inlet pipe, 120-air outlet pipe, 130-bracket, 140-transverse plate, 150-vertical plate, 200-adsorption structure, 211-first inner cylinder, 212-first outer cylinder, 220-adsorption layer, 231-second inner cylinder, 232-second outer cylinder, 240-annular plate, 250-second partition plate, 300-first partition plate, 410-discharge channel, 420-first cover plate, 510-filler channel, 520-second cover plate and 530-third cover plate.
Detailed Description
The invention will be described more fully hereinafter with reference to the accompanying drawings. Those skilled in the art will be able to implement the invention based on these teachings. Before describing the present invention in detail with reference to the accompanying drawings, it is to be noted that:
the technical solutions and features provided in the present invention in the respective sections including the following description may be combined with each other without conflict.
Moreover, the embodiments of the present invention described in the following description are generally only some embodiments of the present invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
With respect to terms and units in the present invention. The terms "comprising," "having," and any variations thereof in the description and claims of this invention and the related sections are intended to cover non-exclusive inclusions.
Fig. 1 is a sectional view of a first embodiment of the gas adsorption device of the present invention. Fig. 2 is a plan view of a first embodiment of the gas adsorbing device of the present invention. Fig. 3 is a bottom view of the first embodiment of the gas adsorbing device of the present invention.
As shown in fig. 1 to 3, the gas adsorption apparatus includes a housing 100, an adsorption structure 200, a first partition 300, a discharge structure, an inlet pipe 110, an outlet pipe 120, and a support 130. The bottom plate 102 of the shell 100 is provided with an air inlet which is connected with an air inlet pipe 110, the top plate 101 is provided with an air outlet which is connected with an air outlet pipe 120, and the shell 100 is cylindrical; the adsorption structure 200 comprises a first inner cylinder 211, a first outer cylinder 212 and an adsorption layer 220 filled between the first inner cylinder 211 and the first outer cylinder 212, wherein the first inner cylinder 211 and the first outer cylinder 212 are provided with air holes; the first partition 300 is connected to the bottom of the adsorption structure 200, an air inlet channel 003 for communicating the air inlet with the raw air cavity 001 between the first outer cylinder 212 and the casing 100 is formed between the first partition 300 and the bottom plate 102, and a clean air cavity 002 communicated with the air outlet is enclosed by the first partition 300 and the first inner cylinder 211.
Therefore, the gas to be treated flows through the gas inlet, the gas inlet channel 003, the raw gas cavity 001, the adsorption layer 220 and the purified gas cavity 002 in sequence and is discharged from the gas outlet and the gas inlet pipe 110. Because adsorption structure 200 is the cylinder, consequently, compare in the filler layer, the area of contact of the pending gas of the same flow with adsorption structure 200 is bigger, and the utilization ratio of adsorbed layer 220 is showing and is promoting. The whole adsorption device is vertically arranged when in use, and the occupied area is small. The gas to be treated enters from bottom to top, which is beneficial to uniformly diffusing the gas to be treated to contact with the adsorption layer 220 and improving the utilization rate of the local adsorption layer 220.
The discharge structure comprises a first positioning hole, a second positioning hole, a discharge channel 410 and a first cover plate 420; the first coordination hole is arranged on the bottom plate 102; the second coordination hole is formed in the first separator 300 below the adsorption layer 220; the upper end of the discharge channel 410 is connected with the second coordination hole, and the discharge opening at the lower end passes through the first coordination hole and then extends out of the shell 100; the first cover plate 420 is connected with the discharge opening by a flange.
Therefore, the adsorption layer 220 can be quickly unloaded through the opening and closing flanges. Especially when the discharge structure is at least two, it helps to completely and rapidly discharge the entire adsorption layer 220. When the discharge structure is at least two, it is preferable that the discharge structure is symmetrically distributed with the gas inlets as a center, and the gas inlets are disposed at the center of the bottom plate 102, which helps to uniformly distribute the gas to be treated in the gas inlet channel 003.
The length of the air inlet pipe 110 is greater than the length of the discharging channel 410 extending out of the shell 100, the length L1 of the air inlet pipe 110 is 400-500 mm, and the length L3 of the discharging channel 410 extending out of the shell 100 is 200-300 mm; thereby, installation and use are facilitated.
The diameter of the discharge channel 410 is smaller than the width of the adsorption layer 220, the diameter of the discharge channel 410 is 200-250 mm, and the width L6 of the adsorption layer 220 is 300-600 mm; therefore, the filling amount of the activated carbon in the discharge channel 410 is reduced, the supporting effect on the adsorption structure 200 is ensured, and the influence of the discharge channel 410 on the flowability of the gas to be treated is reduced.
The adsorption structure 200 further includes an annular through hole, a second inner cylinder 231, a second outer cylinder 232, and an annular plate 240; the annular through hole is formed in the top plate 101, and the width of the annular through hole is matched with the distance between the first inner cylinder 211 and the first outer cylinder 212; the second inner cylinder 231 is connected with the upper end of the first inner cylinder 211 and extends out of the housing 100 after passing through the annular through hole; the second outer cylinder 232 is connected with the upper end of the first outer cylinder 212 and extends out of the housing 100 after passing through the annular through hole; the inner side and the outer side of the annular plate 240 are respectively connected with the tops of the second inner cylinder 231 and the second outer cylinder 232 by flanges.
Therefore, the adsorption layer 220 can be quickly filled through the opening and closing flange. Unlike the first inner cylinder 211 and the first outer cylinder 212, the second inner cylinder 231 and the second outer cylinder 232 do not have the ventilation holes, so that it is possible to prevent the gas to be treated from entering the clean air chamber 002 from the joints between the second inner cylinder 231 and the second outer cylinder 232 and the annular through holes without being adsorbed. The second inner cylinder 231 and the first inner cylinder 211 and the second outer cylinder 232 and the first outer cylinder 212 are preferably welded using flat steel as a back plate. In order to facilitate the movement of the annular plate 240, a handle is provided on the annular plate 240.
The length L8 of the second inner cylinder 231 and the second outer cylinder 232 extending into the shell 100 is 250-350 mm; thereby, while ensuring to avoid the gas to be treated from entering the clean air chamber 002 without being adsorbed, the installation heights of the first inner cylinder 211 and the first outer cylinder 212 are reserved to the maximum, and the adsorption area of the adsorption layer 220 is ensured.
The length of the air outlet pipe 120 is greater than the length of the second inner cylinder 231 and the second outer cylinder 232 extending out of the shell 100, the length L2 of the air outlet pipe 120 is 300-400 mm, and the length L9 of the second inner cylinder 231 and the second outer cylinder 232 extending out of the shell 100 is 150-250 mm; thereby, installation and use are facilitated.
The height L4 of the gas inlet channel 003 is 150 to 250mm, and when the height of the gas inlet channel 003 is lower than the above numerical range, the flow power of the gas to be processed may be affected, and when the height of the gas inlet channel 003 is higher than the above numerical range, the installation height of the first inner cylinder 211 and the first outer cylinder 212 may be lowered.
The height L7 of the first inner cylinder 211 and the first outer cylinder 212 is 1000-2000 mm; thereby, it is facilitated to uniformly contact the gas to be treated with the adsorption layer 220 in the vertical direction, and a high filling amount of the adsorption layer 220 is ensured.
The first inner cylinder body 211 and the first outer cylinder body 212 adopt sieve plates, the aperture of each sieve plate is 2-3 mm, and the pitch of the sieve plates is 5-6 mm; the adsorption layer 220 is formed by stacking activated carbon particles with the particle size of 3.5-4.5 mm; thereby, the activated carbon is helped to be sufficiently contacted with the gas to be treated. Of course, besides activated carbon, other metal or non-metal oxide type adsorbents can be used, such as silica gel, alumina, molecular sieves, natural clays, etc., depending on the composition of the gas to be treated.
The width L5 of the original air cavity 001 is 500-700 mm, and the radius of the first inner cylinder 211 is 800-1000 mm; this enables matching with the pressure change before and after the gas to be treated passes through the adsorption layer 220, and contributes to stable flow of the gas to be treated.
The support 130 is connected with the bottom plate 102, and the height L10 of the support 130 is 1500-2000 mm, so that the unloading operation is facilitated; a handle is provided on the housing 100, thereby facilitating movement of the adsorption device.
One preferred size of the gas adsorption unit of the first embodiment is:
the length L1 of the air inlet pipe 110 is 450mm, and the diameter is 325 mm;
the length L2 of the air outlet pipe 120 is 350mm, and the diameter is 273 mm;
the length L3 of the discharge passage 410 extending out of the housing 100 is 250mm, and the diameter of the discharge passage 410 is 219 mm; the height L4 of the intake passage 003 is 200 mm;
the width L5 of the original air cavity 001 is 628 mm; the width L6 of the absorbent layer 220 is 600 mm; the radius of the first inner cylinder 211 is 942 mm;
the height L7 of the first inner cylinder 211 and the first outer cylinder 212 is 1500 mm; the aperture of the sieve plate is 2.5mm, and the pitch of the holes is 5.5 mm;
the length L8 of the second inner cylinder 231 and the second outer cylinder 232 extending into the interior of the housing 100 is 300mm, and the length L9 of the second inner cylinder 231 and the second outer cylinder 232 extending out of the housing 100 is 200 mm;
the height L10 of the bracket 130 is 1750 mm;
at this moment, the adsorption device can treat the gas to be treated with the flow rate and the concentration within a wide numerical range, and has the advantages of compact structure, small occupied area and high utilization rate of the adsorption layer 220.
Fig. 4 is a plan view of a second embodiment of the gas adsorbing device of the present invention. Fig. 5 is a transverse cross-sectional view of a second embodiment of the gas adsorption device of the present invention. Fig. 6 is a vertical sectional view, namely, a sectional view taken along line a-a of fig. 5, of a second embodiment of the gas adsorbing device of the present invention.
As shown in fig. 4 to 6, the gas adsorption apparatus includes a housing 100, an adsorption assembly, a partition structure, a discharge structure, and a charge structure. The shell 100 is provided with an air inlet and an air outlet, the air inlet is connected with the air inlet pipe 110, and the air outlet is connected with the air outlet pipe 120; the adsorption assembly is provided with at least two adsorption structures 200 which are arranged at intervals, each adsorption structure 200 is provided with a first inner cylinder 211, a first outer cylinder 212 and an adsorption layer 220 filled between the first inner cylinder 211 and the first outer cylinder 212, and air holes are formed in the first inner cylinder 211 and the first outer cylinder 212; the partition structure is provided with a first mounting hole adapted to the first outer cylinder 212, and the partition structure is connected to the casing 100 and divides the casing 100 into a raw gas cavity 001 communicated with the gas inlet and a clean gas cavity 002 communicated with the gas outlet.
From this, pending gas gets into former air cavity 001 from the air inlet, disperses in former air cavity 001 back and contacts with a plurality of adsorption structure 200, then loops through behind adsorbed layer 220 and the first mounting hole and gets into air purification chamber 002. The gas adsorption apparatus of the present embodiment can handle a higher flow rate and concentration of the gas to be treated than the first embodiment. Compared with a plurality of modules connected in parallel or in series in the first embodiment, the gas adsorption device of the embodiment has the advantages of high integration degree, small occupied area and low investment cost.
When there are other corollary equipments in the front end and the rear end of the gas adsorption device and the gas adsorption device is arranged in a straight line, an optimal setting mode of the partition structure is as follows: the partition structure comprises a transverse plate 140 and a vertical plate 150 which are connected with each other and are connected with the casing 100 in an inner mode, the transverse plate 140 is provided with the first mounting hole, a raw air cavity 001 is formed below the transverse plate 140 and on one side of the vertical plate 150, a clean air cavity 002 is formed above the transverse plate 140 and on the other side of the vertical plate 150, and at the moment, the air inlet and the air outlet are respectively formed in two side faces, which are not connected with the vertical plate 150, of the casing 100. The cross plate 140 and the first outer cylinder 212 may be welded or bolted.
The distance D4 between the transverse plate 140 and the top plate 101 of the housing 100 is preferably 800-1200 mm, the distance D5 between the vertical plate 150 and the air outlet is preferably 800-1200 mm, and the distance between the transverse plate 140 and the top plate 101 of the housing 100 is preferably equal to the distance between the vertical plate 150 and the air outlet, so that the clean air in the clean air chamber 002 can be stably discharged.
The adsorption structure 200 further includes a second partition plate 250, the second partition plate 250 is connected to the bottom of the adsorption layer 220, and a space is left between the second partition plate 250 and the bottom plate 102 of the housing 100, thereby helping to uniformly disperse the gas to be processed in the raw gas chamber 001.
The adsorption structure 200 further includes a second inner cylinder 231, a second outer cylinder 232, and an annular plate 240; the second inner cylinder 231 is connected with the upper end of the first inner cylinder 211, penetrates through the first mounting hole and then extends out to the upper part of the transverse plate 140; the second outer cylinder 232 is connected with the upper end of the first outer cylinder 212, passes through the first mounting hole and then extends to the upper part of the transverse plate 140; the inner side and the outer side of the annular plate 240 are connected with the second inner cylinder 231 and the second outer cylinder 232, respectively; therefore, since the second inner cylinder 231 and the second outer cylinder 232 do not include the air holes, it is possible to prevent the gas to be treated from entering the clean air chamber 002 from the joints between the second inner cylinder 231 and the second outer cylinder 232 and the horizontal plate 140 without being adsorbed.
The length D7 that the second inner cylinder 231 and the second outer cylinder 232 extend to the lower side of the horizontal plate 140 is 100-200 mm, so that the installation heights of the first inner cylinder 211 and the first outer cylinder 212 are reserved to the maximum extent while the gas to be treated is prevented from entering the clean air cavity 002 without being adsorbed, and the adsorption area of the adsorption layer 220 is ensured.
The length D8 that the second inner cylinder 231 and the second outer cylinder 232 stretch out to the top of the transverse plate 140 is 100-200 mm, so that the influence on the flow of the gas in the gas purifying chamber 002 is reduced while the gas to be treated is prevented from entering the gas purifying chamber 002 without being adsorbed.
The discharge structure comprises a first positioning hole, a second positioning hole, a discharge channel 410 and a first cover plate 420; the first coordination hole is arranged on the bottom plate 102 of the shell 100; the second coordination hole is formed in the second partition plate 250 below the adsorption layer 220; the upper end of the discharge channel 410 is connected with the second coordination hole, and the discharge opening at the lower end passes through the first coordination hole and then extends out of the shell 100; the first cover plate 420 is detachably connected with the discharge port through a flange.
Therefore, the adsorption layer 220 can be quickly unloaded through the opening and closing flanges. Especially when the discharge structure is at least two, it helps to completely and rapidly discharge the entire adsorption layer 220. The size of the discharge structure may be, but is not limited to, the same as the discharge structure in the first embodiment.
The filling structure comprises a third positioning hole, a fourth positioning hole, a filler channel 510 and a second cover plate 520; the third coordination hole is arranged on the top plate 101 of the shell 100; the fourth coordination hole is arranged on the annular plate 240; the lower end of the packing channel 510 is connected with the fourth coordination hole, and the packing port at the upper end passes through the third coordination hole and then extends out of the shell 100; the second cover plate 520 is detachably connected with the filling opening through a flange.
Therefore, the adsorption layer 220 can be quickly filled through the opening and closing flanges. Especially when the packing structure is at least two, it helps to uniformly and rapidly pack the adsorption layer 220.
The packing passage 510 has a diameter smaller than the width of the adsorption layer 220, thereby facilitating the falling of the adsorbent.
When the unloading structure and the loading structure are at least two, the unloading structure and the loading structure are preferably distributed in a staggered manner, so that dead corners are prevented from being formed, and complete discharge and uniform loading of the adsorption layer 220 are facilitated.
The loading structure further comprises a third cover plate 530 and a fifth coordination hole, the third cover plate 530 is configured with the third coordination hole, the fifth coordination hole is formed in the top plate 101 of the casing 100, the third cover plate 530 and the fifth coordination hole are detachably connected through a flange, so that the installation (the adsorption structure 200 can be directly lifted and installed from the fifth coordination hole) and the use of the adsorption structure 200 are facilitated, for example, only the second cover plate 520 is opened during loading, and if the adsorption structure 200 needs to be overhauled, the third cover plate 530 can be opened.
Adsorption component has two and distributes in the adsorption element of the axial both sides of air inlet direction, and every adsorption element has two at least adsorption structure 200 of interval arrangement, and the interval of adsorption element is greater than the interval of two adjacent adsorption structure 200 in every adsorption element, helps making pending gas more even in horizontal distribution.
The interval D9 of adsorption unit is 700 ~ 900mm, and the interval D10 of two adjacent adsorption structure 200 is 300 ~ 500mm in every adsorption unit, and the interval D11 of the side of the one row of adsorption structure 200 that is close to the air inlet and air inlet place casing 100 is preferred 600 ~ 800mm, from this, both can make pending gaseous more even in horizontal distribution, avoid extravagant adsorption structure 200's installation space again.
The height D12 of the first inner cylinder 211 and the first outer cylinder 212 is 3500-4500 mm, the diameter of the first inner cylinder 211 is 1000-1500 mm, and the width D6 of the adsorption layer 220 is 300-600 mm; since the adsorption structure 200 in the present embodiment is plural as compared with the adsorption structure 200 in the first embodiment, it is preferable to make the adsorption structure 200 in the present embodiment have a higher height and a smaller thickness of the adsorption layer 220 than the adsorption structure 200 in the first embodiment in order to reduce the footprint and ensure the filling amount of the adsorption layer 220.
The first inner cylinder body 211 and the first outer cylinder body 212 adopt sieve plates, the aperture of each sieve plate is 2-3 mm, and the pitch of the sieve plates is 5-6 mm; the adsorption layer 220 is formed by stacking activated carbon particles with the particle size of 3.5-4.5 mm; thereby, the activated carbon is helped to be sufficiently contacted with the gas to be treated. Of course, besides activated carbon, other metal or non-metal oxide type adsorbents can be used, such as silica gel, alumina, molecular sieves, natural clays, etc., depending on the composition of the gas to be treated.
One preferred size of the gas adsorption device of the second embodiment is:
the diameters of the inlet pipe 110 and the outlet pipe 120 are 3000 mm;
the height D1 of the housing 100 is 5210mm, the length D2 is 14000mm, and the width D3 is 11000 mm;
the distance D4 between the transverse plate 140 and the top plate 101 of the shell 100 and the distance D5 between the vertical plate 150 and the air outlet are both 1000 mm;
the height D12 of the first outer cylinder 212 and the first inner cylinder 211 is 3900mm, the diameter of the first inner cylinder 211 is 1200mm, and the width D6 of the adsorption layer 220 is 400 mm;
the aperture of the sieve plate is 2.5mm, and the pitch of the holes is 5.5 mm;
the length D7 of the second inner cylinder 231 and the second outer cylinder 232 extending below the transverse plate 140 is 150 mm; the length D8 of the second inner cylinder 231 and the second outer cylinder 232 extending above the transverse plate 140 is 150 mm;
the distance D9 between the adsorption units is 800mm, and the distance D10 between two adjacent adsorption structures 200 in each adsorption unit is 400 mm; the distance D11 between the adsorption structure 200 at the edge and the side face and the vertical plate 150 of the shell 100 is 700 mm;
the discharging structures and the filling structures are six and are distributed at equal intervals;
the length D13 of the discharge channel 410 extending outside the housing 100 is 250 mm; the distance D14 between the second partition plate 250 and the bottom plate 102 is 200 mm;
in order to ensure the strength, reinforcing ribs are arranged on the first outer cylinder body 212 and the second outer cylinder body 232 at intervals of 750 mm;
at this moment, adsorption equipment can handle flow and concentration in wide numerical range and the great pending gas of handling of numerical value to compact structure takes up an area of for a short time, and adsorption layer 220 high-usage.
The first embodiment of the dioxin treatment system of the present invention is a system comprising a plurality of gas adsorption apparatuses of the first embodiment, which may be connected in parallel or in series; a first embodiment of the dioxin treatment method of the invention is to treat waste incineration flue gas by using the dioxin treatment system of the first embodiment.
The dioxin treatment system and method of the first embodiment can treat the waste incineration flue gas with a small flow rate and a dioxin concentration, and the flow rate of the waste incineration flue gas is preferably 5000m3The concentration is preferably 0.05-0.15 ng/m3。
A second embodiment of the dioxin treatment system of the present invention is a gas adsorption apparatus including the second embodiment, and the gas adsorption apparatus may be plural and connected in parallel or in series; a second embodiment of the dioxin treatment method of the invention is to treat the waste incineration flue gas by using the dioxin treatment system of the second embodiment.
The dioxin treatment system and method of the second embodiment can treat the waste incineration flue gas with a large flow rate and a dioxin concentration, and the flow rate of the waste incineration flue gas is preferably 400000m3Less than h, preferably 0.05-0.15 ng/m3。
The contents of the present invention have been explained above. Those skilled in the art will be able to implement the invention based on these teachings. All other embodiments, which can be derived by a person skilled in the art from the above description without inventive step, shall fall within the scope of protection of the present invention.
Claims (10)
1. Gas adsorption equipment, its characterized in that: the method comprises the following steps:
the air conditioner comprises a shell (100), wherein an air inlet and an air outlet are formed in the shell (100);
the adsorption component is provided with at least two adsorption structures (200) which are arranged at intervals, each adsorption structure (200) is provided with a first inner cylinder (211), a first outer cylinder (212) and an adsorption layer (220) filled between the first inner cylinder (211) and the first outer cylinder (212), and air holes are formed in the first inner cylinder (211) and the first outer cylinder (212);
the cutting structure is provided with a first mounting hole matched with the first outer cylinder (212), and is connected with the shell (100) and divides the shell (100) into an original air cavity (001) communicated with the air inlet and a purified air cavity (002) communicated with the air outlet;
the gas to be treated enters the original gas cavity (001) from the gas inlet, and then enters the purified gas cavity (002) after passing through the adsorption layer (220) and the first mounting hole in sequence.
2. The gas adsorption device of claim 1, wherein: the cutting structure comprises a transverse plate (140) and a vertical plate (150) which are connected with each other and are connected with the shell (100) in an inner mode, the transverse plate (140) is provided with the first mounting hole, a raw air cavity (001) is formed below the transverse plate (140) and on one side of the vertical plate (150), a clean air cavity (002) is formed above the transverse plate (140) and on the other side of the vertical plate (150), and the air inlet and the air outlet are respectively formed in two side faces, which are not connected with the vertical plate (150), of the shell (100); the distance between the transverse plate (140) and the top plate (101) of the shell (100) is preferably 800-1200 mm, and the distance between the vertical plate (150) and the air outlet is preferably 800-1200 mm.
3. The gas adsorption device of claim 2, wherein:
the adsorption structure (200) further comprises a second partition plate (250), the second partition plate (250) is connected with the bottom of the adsorption layer (220), and a gap is reserved between the second partition plate (250) and the bottom plate (102) of the shell (100); and/or the like and/or,
the adsorption structure (200) further comprises:
the second inner cylinder (231), the second inner cylinder (231) is connected with the upper end of the first inner cylinder (211), penetrates through the first mounting hole and then extends out to the upper side of the transverse plate (140);
the second outer cylinder body (232) is connected with the upper end of the first outer cylinder body (212), penetrates through the first mounting hole and then extends out of the transverse plate (140);
and an annular plate (240), the inner side and the outer side of the annular plate (240) being connected with the second inner cylinder (231) and the second outer cylinder (232), respectively.
4. A gas adsorption unit as claimed in claim 3, wherein: the length of the second inner cylinder (231) and the second outer cylinder (232) extending into the lower part of the transverse plate (140) is 100-200 mm; and/or the length of the second inner cylinder (231) and the second outer cylinder (232) extending above the transverse plate (140) is 100-200 mm.
5. A gas adsorption unit as claimed in claim 3, wherein:
still including the structure of unloading, the structure of unloading includes:
a first alignment hole provided on a bottom plate (102) of the housing (100);
the second coordination hole is arranged on the second partition plate (250) below the adsorption layer (220);
the upper end of the discharge channel (410) is connected with the second coordination hole, and the discharge opening at the lower end of the discharge channel (410) penetrates through the first coordination hole and then extends out of the shell (100);
a first cover plate (420), wherein the first cover plate (420) is detachably connected with the discharge opening;
still include the filling structure, the filling structure includes:
a third coordination hole, which is arranged on the top plate (101) of the shell (100);
a fourth coordination hole, said fourth coordination hole being provided on the annular plate (240);
the lower end of the packing channel (510) is connected with the fourth coordination hole, and the packing port at the upper end of the packing channel (510) penetrates through the third coordination hole and then extends out of the shell (100);
the second cover plate (520), second cover plate (520) and filler opening detachable connection.
6. The gas adsorption device of claim 5, wherein: each adsorption structure (200) is provided with at least two discharging structures and at least two filling structures, and the discharging structures and the filling structures are preferably distributed in a staggered manner.
7. The gas adsorption device of claim 5, wherein: the filling structure further comprises a third cover plate (530) and a fifth coordination hole, the third cover plate (530) is configured with the third coordination hole, the fifth coordination hole is formed in the top plate (101) of the shell (100), and the third cover plate (530) is detachably connected with the fifth coordination hole.
8. The gas adsorption device of claim 1, wherein: the adsorption component is provided with two adsorption units distributed on two axial sides of the air inlet direction, each adsorption unit is provided with at least two adsorption structures (200) arranged at intervals, and the distance between the adsorption units is larger than the distance between two adjacent adsorption structures (200) in each adsorption unit; the preferred 700 ~ 900mm of interval of adsorption unit, the preferred 300 ~ 500mm of interval of two adjacent adsorption structure (200) in every adsorption unit, the preferred 600 ~ 800mm of interval of the side of the casing (100) that is located with the air inlet of a row of adsorption structure (200) that is close to the air inlet.
9. Dioxin processing system, its characterized in that: comprising a gas adsorption unit according to any one of claims 1 to 8.
10. A dioxin treatment method is characterized by comprising the following steps: adsorbing dioxin in a gas to be treated by using the gas adsorption device according to any one of claims 1 to 8 or the treatment system according to claim 9.
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