CN216295683U - Gathering and dispersing type waste gas purifying device - Google Patents
Gathering and dispersing type waste gas purifying device Download PDFInfo
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- CN216295683U CN216295683U CN202122309957.2U CN202122309957U CN216295683U CN 216295683 U CN216295683 U CN 216295683U CN 202122309957 U CN202122309957 U CN 202122309957U CN 216295683 U CN216295683 U CN 216295683U
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Abstract
The utility model discloses a gathering and dispersing type waste gas purification device which comprises a plurality of sets of adsorption purification devices, at least one set of desorption regeneration device and at least one set of adsorber transfer device. The main function part of the adsorption and purification device is a step adsorption device, and the desorption and regeneration device mainly comprises an adsorber conveying device, a step desorption device, a desorbed gas heating device, a step heat recovery device and an adsorber recovery device; the advanced adsorption device, the advanced desorption device and the advanced heat recovery device all comprise more than two adsorbers which are communicated in a stacked mode. The absorber is circularly circulated among the advanced adsorption device, the advanced desorption device and the advanced heat recovery device according to the processing sequence of adsorption-desorption-heat recovery-adsorption. The distributed transfer of the adsorbers between the adsorption device and the regeneration device is completed by an adsorber transfer device. The absorber makes full countercurrent movement relative to desorption airflow in the desorption and heat recovery processes. The device remarkably reduces the operation cost of the desorption regeneration treatment process and the investment cost of a plurality of adsorption devices.
Description
Technical Field
The utility model relates to a gas adsorption and purification device.
Background
Patent document CN110013736A discloses an adsorption method exhaust purification device for concentrating exhaust pollutants. The embodiment 2 and the accompanying drawings 8 to 9 disclose a unit supply and recovery type gas adsorption concentration device, aiming at the application scenes that waste gas is discharged intermittently or the flow and concentration fluctuation is extremely large, the adsorption device and the desorption device of the gas adsorption concentration device are divided into two independent parts, and an adsorption unit turnover device comprising an adsorption unit supply device and an adsorption unit recovery device is added. Also discloses a technical scheme that adsorption unit recovery devices which are generated by a plurality of gas adsorption devices and are filled with saturated adsorption units are concentrated at one desorption device and are treated in a continuous desorption mode.
Disclosure of Invention
The technical solution of CN110013736A focuses on the problem of variability of the exhaust gas source, so the technical solution focuses on the adsorption device, and therefore, a relatively complicated adsorption unit supply device and adsorption unit recovery device are provided. In practical applications, the fan in the exhaust gas collecting and conveying device in the adsorption process is a main source of operation cost, and the exhaust gas collecting and conveying device including the fan is a universal device in all process type exhaust gas treatment devices. Other process type waste gas treatment devices include biological processes, various advanced oxidation processes, various combustion processes, activated carbon single adsorption processes, and the like. When the process is used for the deodorization of municipal or industrial waste gases, the time for the adsorbent to reach a saturated state, that is, the desorption regeneration period of the adsorber (or adsorption module) is long, because the content of pollutant adsorbates in the waste gas is very low. In practice, this period is typically several weeks, even up to several months, with a single adsorber (or adsorption module) requiring only tens of minutes per desorption up to one or two hours. Desorption regeneration is a very short process throughout the run. This also means that one desorption/regeneration device can be matched to hundreds of adsorption devices according to the processing capacity, and the construction cost of the whole system is mainly reflected in the large number of adsorption purification devices. In the whole system operation cost, the operation cost with reduced margin is mainly reflected on the treatment devices such as incineration and the like after desorption and removal except for the operation cost of a fan required for collecting and conveying the waste gas. Therefore, it is necessary to simplify the adsorption device and improve the desorption device, so that the desorption device is more energy-saving and has higher operation efficiency.
The specific technical scheme is as follows: the utility model provides a waste gas adsorbs concentrated purifier, includes that the cover of many sets adsorbs purifier, at least one set desorption regenerating unit and at least one set adsorber transfer device. The main function part of the adsorption and purification device is a step adsorption device, and the desorption and regeneration device mainly comprises an adsorber conveying device, a step desorption device, a desorbed gas heating device, a step heat recovery device and an adsorber recovery device. The advanced adsorption device, the advanced desorption device and the advanced heat recovery device all comprise more than two adsorbers which are communicated in a stacked mode. The absorber is circularly circulated among the advanced adsorption device, the advanced desorption device and the advanced heat recovery device according to the processing sequence of adsorption-desorption-heat recovery-adsorption. The distributed transfer of the adsorbers between the adsorption device and the regeneration device is completed by an adsorber transfer device. The advanced meaning of the advanced adsorption device, the advanced desorption device and the advanced heat recovery device means that the adsorber which is processed in each processing process is removed from the gas inlet end, and the supplementary replaced adsorber is added from the gas outlet end to form the reverse movement of the adsorber relative to the flowing direction of the gas, thereby realizing the process of full-countercurrent mass and heat transfer.
The whole effect of the improved system is remarkable, and the operation cost of the desorption regeneration treatment process and the investment cost of a plurality of adsorption devices are reduced. The desorption energy consumption is reduced and the desorption effect is improved in the process of the full-countercurrent mass and heat transfer.
The utility model is further described with reference to the following figures and specific examples.
Drawings
FIG. 1 is a schematic view of the system of a distributed exhaust gas adsorption, concentration and purification device
FIG. 2 is a schematic view of the operation of the adsorption apparatus and the adsorber transfer apparatus
FIG. 3 is a schematic view of the operation of the adsorption apparatus
FIG. 4 is a schematic view of the operation of the regeneration apparatus and the adsorber transfer apparatus
FIG. 5 is a schematic diagram of the operation of the regeneration device
FIG. 6 is a schematic view of a regeneration apparatus with an improved heating device for desorption gas
FIG. 7 is a schematic view of a regeneration apparatus without full countercurrent
Detailed Description
Example 1
A collecting and distributing type waste gas adsorption concentration purification device, which is shown in figure 1.
The device comprises a plurality of sets of adsorption purification devices 1, a set of desorption regeneration device 2 and a set of adsorber transfer device 3. The specific number of purification devices 1 is open and can be dynamically expanded.
Referring to fig. 2-3, the main functional part of the adsorption purification device 1 is a step adsorption device 11, and each adsorption purification device 1 comprises 3 adsorbers 9. The adsorber is in a short cylinder structure, can be a square cylinder or a cylinder, the upper surface and the lower surface are in a screen structure, the periphery is in a sealed heat-preservation structure, and the middle is filled with a granular adsorbent. The upper and lower cylinder openings are provided with nested positioning sealing structures, and a plurality of adsorbers are stacked to form an air flow channel which is communicated up and down and insulated on the periphery.
The exhaust gas (indicated by solid arrows in the figure) from the exhaust gas collecting device 12 enters the advanced adsorption device 11 through the adsorber connection supporting device 13 connected with the adsorber 9, and the clean air (indicated by hollow arrows in the figure) is discharged into the atmosphere through the purification discharge chimney 15 under the driving of the adsorption fan 14. Contaminants in the exhaust gas (indicated by black dots in the figure) reside within the adsorbent 91. The small arrows on the communication lines indicate the direction of the gas flow.
In the process of waste gas purification treatment, the adsorber at one end of the air inlet is firstly saturated, the adsorber is manually moved out to the adsorber transfer device 3, the two unsaturated adsorbers on the adsorber transfer device move downwards, and a new or regenerated adsorber is taken down from the transfer device 3 and placed in a vacant position of the adsorber above the advanced adsorption device 11.
Referring to fig. 4, 5 and 7, the desorption regeneration device 2 mainly comprises an adsorber conveying device 21, a step desorption device 22, a desorption gas heating device 23, a step heat recovery device 24 and an adsorber recovery device 25. The advanced desorption apparatus 22 and the advanced heat recovery apparatus 24 each comprise 4 adsorbers in stacked communication and corresponding communication support apparatuses 221 and 241.
In the desorption and regeneration process of the adsorbers, a plurality of adsorbers 9 unloaded from the adsorber transfer device 3 are manually stacked and placed on the adsorber conveying device 21, automatically transferred to the adsorber recovery device 25 through the advanced desorption device 22 and the advanced heat recovery device 24, stacked and stacked, and manually loaded with the adsorber transfer device 3. According to the requirement, a stacking and storing place and a matched safe stacking device can be arranged for respectively storing the saturated adsorbers to be regenerated and discharged.
The temperature of the adsorber 9 gradually increases during the movement from bottom to top in the advanced desorption device 22, and the overall temperature gradually decreases during the movement from bottom to top again in the advanced heat recovery device 24. However, the adsorbent packing filled in the adsorber may have a certain temperature gradient, and the lower layer in the packing may still be heated continuously, and the process is also part of the desorption process. If the regeneration device adopts the structure shown in fig. 7, the desorption process in the advanced heat recovery device 24 does not exist, and the desorption effect of a part of the material layer is influenced to a certain extent. The design of fig. 7 is therefore a non-preferred design.
In the desorption and regeneration process of the adsorber, the desorption gas entering the advanced heat recovery device from the desorption gas pretreatment device 241 (usually, only dust removal or foreign matter blocking is needed) is at normal temperature, the temperature can be raised to be close to the temperature required by desorption of the adsorbent after the adsorbent packing in the adsorber in the advanced heat recovery device is heated, and insufficient heat is heated and supplemented by the desorption gas heating device 23 to reach the preset desorption temperature. The heat of the desorbed gas is fully transferred to the adsorbent when the desorbed gas passes through the adsorber material layer in the advanced desorption device 22, the temperature of the desorbed pollutant reaches the exhaust end of the advanced desorption device and approaches the normal temperature, and finally the desorbed pollutant is sent to the thermal destruction device 26 through the desorption fan 25 for harmless treatment and is discharged into the atmosphere through the desorption discharge chimney 27. The high temperature state of the adsorbent packing and the desorption gas in the process is only a process in the system, does not release a large amount of heat to the outside of the system, and is a highly energy-saving process.
The distributed transfer of the adsorbers 9 between the adsorption purification device 1 and the regeneration device 2 is carried out by the adsorber transfer device 3. According to the influence of factors such as the size, the weight and the area range covered by the system of the adsorber, different transport means can be adopted by the adsorber transfer device 3, and the transport vehicle modified with the crane truck is adopted in the embodiment.
The waste gas collecting device 12, the adsorption fan 14 and the purification discharge chimney 15 which are communicated with the adsorption purification device 1, and the desorption fan 25, the thermal destruction device 26 and the desorption discharge chimney 27 which are communicated with the desorption regeneration device 2 in the embodiment can be understood as peripheral devices matched with the distributed waste gas adsorption concentration purification device.
Example 2
The collecting and distributing type waste gas adsorption concentration purification device of the regeneration device of the desorption gas heating device is improved, and the attached figure 6 is shown.
This embodiment is an improvement of the desorption gas heating device 23 based on embodiment 1, and specifically, a heat exchanger 231 is provided in the thermal destruction device 26. When the exhaust gas adsorption concentration purification device is used with contaminants having a relatively high heat value, the heat value of the desorbed gas will still have excess heat in addition to maintaining self-sustaining operation of the thermal destruction device 26. This excess heat is transferred to the desorption gas by heat exchanger 231. The method is also a technical improvement for saving energy and reducing consumption.
Claims (4)
1. A collecting and dispersing type waste gas purification device comprises a plurality of sets of adsorption purification devices, at least one set of desorption regeneration device and at least one set of adsorber transfer device; the main function part of the adsorption and purification device is a step adsorption device, and the desorption and regeneration device mainly comprises an adsorber conveying device, a step desorption device, a desorbed gas heating device, a step heat recovery device and an adsorber recovery device; the advanced adsorption device, the advanced desorption device and the advanced heat recovery device all comprise more than two adsorbers which are communicated in a stacked mode; the absorber is circularly circulated among the advanced adsorption device, the advanced desorption device and the advanced heat recovery device according to the processing sequence of adsorption-desorption-heat recovery-adsorption; the distributed transfer of the adsorbers between the adsorption device and the regeneration device is completed by an adsorber transfer device.
2. The poly-dispersed exhaust gas purification device as claimed in claim 1, wherein the adsorber performs a full countercurrent movement with respect to the desorption gas flow during the desorption and heat recovery processes.
3. The collecting and dispersing exhaust gas purifying apparatus as claimed in claim 2, wherein the adsorber is of a short cylindrical structure, the upper and lower surfaces are of screen mesh structures, the periphery is of a sealed heat-insulating structure, the middle is filled with granular adsorbent, the upper and lower cylinder openings are of nested positioning and sealing structures, and a plurality of adsorbers are stacked to form an air flow passage which is communicated from top to bottom and insulated from the periphery.
4. The poly-dispersed exhaust gas purification device according to claim 3, wherein a regenerative thermal destruction device RTO is provided in the desorption gas discharge line, and a heat exchanger is provided in the regenerative thermal destruction device RTO, and the heat exchanger can transfer excess heat to the desorption gas by heat exchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122309957.2U CN216295683U (en) | 2021-09-13 | 2021-09-13 | Gathering and dispersing type waste gas purifying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122309957.2U CN216295683U (en) | 2021-09-13 | 2021-09-13 | Gathering and dispersing type waste gas purifying device |
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| Publication Number | Publication Date |
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| CN216295683U true CN216295683U (en) | 2022-04-15 |
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| CN202122309957.2U Active CN216295683U (en) | 2021-09-13 | 2021-09-13 | Gathering and dispersing type waste gas purifying device |
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2021
- 2021-09-13 CN CN202122309957.2U patent/CN216295683U/en active Active
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