CN213375846U - Reaction device of adsorption fluidized bed - Google Patents

Reaction device of adsorption fluidized bed Download PDF

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CN213375846U
CN213375846U CN202021429752.7U CN202021429752U CN213375846U CN 213375846 U CN213375846 U CN 213375846U CN 202021429752 U CN202021429752 U CN 202021429752U CN 213375846 U CN213375846 U CN 213375846U
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fluidized bed
adsorption
reaction device
fluidizing
zone
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王宝汉
柳龙
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Guangzhou Penghao Energy Saving And Environmental Protection Technology Co ltd
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Guangzhou Penghao Energy Saving And Environmental Protection Technology Co ltd
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Abstract

The utility model discloses an adsorption fluidized bed reaction device, which is provided with an air inlet, an air outlet, a feed inlet and a discharge outlet which are communicated with the interior of the adsorption fluidized bed reaction device, wherein the air inlet and the discharge outlet are arranged at the lower part of the adsorption fluidized bed reaction device, and the air outlet and the feed inlet are arranged at the upper part of the adsorption fluidized bed reaction device; the adsorption fluidized bed reaction device is internally provided with a plurality of layers of fluidized beds from top to bottom, the plurality of layers of fluidized beds are provided with a fluidizing zone and a material storage zone which are mutually communicated, the fluidizing zones of the plurality of layers of fluidized beds are arranged in a stacking and separating way, the adjacent fluidizing zones are communicated by air flow, the material storage zone is arranged at the side of the fluidizing zone and is provided with a feeding device, and the feeding device is used for feeding an adsorption material in the material storage zone into the fluidizing zone of the next layer of fluidized bed; the device realizes the continuous operation of a single tower, effectively reduces the system investment cost and the operation cost, and the gas is in countercurrent contact with the adsorption material, so that the discharged adsorption material is almost completely saturated, and great convenience is provided for regeneration and pollutant recycling.

Description

Reaction device of adsorption fluidized bed
Technical Field
The utility model relates to an exhaust-gas treatment and resource circulation recycle field in the environmental protection trade, in particular to adsorb fluidized bed reaction unit.
Background
Volatile Organic Compounds (VOCs) are a general name of Volatile Organic Compounds, which are defined by the world health organization as Organic Compounds with boiling point range of 50-260 ℃ and saturated vapor pressure of over 133.32Pa at room temperature, existing in air in the form of steam, and VOCs are one of the main causes of air pollution.
At present, VOCs treatment modes mainly comprise combustion, adsorption enrichment retreatment, biological treatment technology and the like. The combustion mode is mainly applied to the treatment of high-concentration VOCs gas, the investment and operation cost is high, and the combustible property of organic matters is mainly utilized to carry out pyrolysis treatment on the VOCs gas so as to achieve harmless emission of the gas; the biological treatment technology can only treat low-concentration gas, the biological treatment device has limited treatment load on VOCs, and the application scene is greatly limited; the conventional adsorption enrichment process adopts the adsorption material to adsorb and then abandon the treatment, which not only causes huge waste, but also has extremely high operating cost.
In recent years, desorption regeneration after adsorption enrichment is adopted, so that the primary investment cost and the operating cost can be reduced, the possibility is provided for resource utilization of waste gas VOCs, but most of the waste gas VOCs adopt a fixed bed structure, and single-tower continuous operation cannot be realized.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an adsorb fluidized bed reaction unit to solve prior art can't realize single tower continuous operation's problem.
In order to solve the technical problem, the utility model provides an adsorption fluidized bed reaction device, which is provided with an air inlet, an air outlet, a feed inlet and a discharge outlet which are communicated with the interior of the adsorption fluidized bed reaction device, wherein the air inlet and the discharge outlet are arranged at the lower part of the adsorption fluidized bed reaction device, and the air outlet and the feed inlet are arranged at the upper part of the adsorption fluidized bed reaction device; the adsorption fluidized bed reaction device is characterized in that a plurality of layers of fluidized beds are arranged in the adsorption fluidized bed reaction device from top to bottom, the plurality of layers of fluidized beds are provided with a fluidizing zone and a material storage zone which are communicated with each other, the fluidizing zones of the plurality of layers of fluidized beds are arranged in a stacking and separating mode, the adjacent fluidizing zones are communicated with each other through air flow, the material storage zone is arranged beside the fluidizing zone, and a feeding device is arranged in the material storage zone and used for feeding an adsorption material in the material storage zone into the next layer of fluidized bed.
In one embodiment, the bottom of the fluidization region is a fluidization plate, and the fluidization plate is one or more of a punching plate, a screen and a sintered porous plate.
In one embodiment, the material storage area comprises a partition plate and a sealing plate, and the partition plate, the sealing plate and the inner wall of the adsorption fluidized bed reaction device enclose the material storage area.
In one embodiment, the activation of the feeder is used to feed a metered amount of adsorbent material into the fluidisation zone of the next bed of the fluidised bed.
In one embodiment, the adsorption fluidized bed reaction device is further provided with a timing controller, the timing controller is electrically connected with the feeding device, and the timing controller is used for controlling the feeding device to feed materials at regular time.
In one embodiment, a concentration sensor is arranged in the gas outlet and electrically connected with the feeding devices, and when the concentration of the exhaust gas measured by the concentration sensor reaches a preset value, the feeding devices of each layer operate in sequence to feed the adsorbing material into the fluidizing region of the next layer of the fluidized bed.
In one embodiment, the gas inlet extends to the interior of the adsorption fluidized bed reaction device and faces the bottom of the adsorption fluidized bed reaction device.
In one embodiment, a diffuser plate is arranged in the air inlet.
The utility model has the advantages as follows:
because the fluidization areas of the multiple layers of the fluidized beds are arranged in a laminated and separated manner, and the adjacent fluidization areas are communicated in an air flow manner, after gas containing volatile organic compounds enters the adsorption fluidized bed reaction device, the gas can rise until the gas is discharged, and at the moment, the adsorption material can adsorb the volatile organic compounds; and because the feeder is used for feeding the adsorption material in the material storage area into the fluidized area of the next layer of the fluidized bed, the sinking and discharging of the adsorption material are realized, so that the problem that the single-tower continuous operation cannot be realized in the prior art is solved practically, the system investment cost and the operation cost are reduced effectively, gas and the adsorption material are in countercurrent contact, the maximization of mass transfer driving force can be realized in each layer of fluidized bed, the discharged adsorption material is almost completely saturated, and great convenience is provided for regeneration and pollutant recycling.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of an adsorption fluidized bed reactor according to a first embodiment of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of an adsorption fluidized bed reactor according to a second embodiment of the present invention.
The reference numbers are as follows:
11. an air inlet; 12. an air outlet; 13. a feed inlet; 14. a discharge port;
20. a fluidized bed; 21. a fluidizing zone; 211. a fluidization plate; 22. a material storage area; 221. a partition plate; 222. closing the plate;
30. a feeding device.
Detailed Description
The technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
A first embodiment of the adsorption fluidized bed reaction apparatus is shown in fig. 1 and fig. 2, the adsorption fluidized bed reaction apparatus is provided with a gas inlet 11, a gas outlet 12, a feed inlet 13 and a discharge outlet 14 communicated with the interior of the adsorption fluidized bed reaction apparatus, the gas inlet 11 and the discharge outlet 14 are arranged at the lower part of the adsorption fluidized bed reaction apparatus, and the gas outlet 12 and the feed inlet 13 are arranged at the upper part of the adsorption fluidized bed reaction apparatus; the adsorption fluidized bed reaction device is internally provided with a plurality of layers of fluidized beds 20 from top to bottom, the plurality of layers of fluidized beds 20 are respectively provided with a fluidizing zone 21 and a material storage zone 22 which are communicated with each other, the fluidizing zones 21 of the plurality of layers of fluidized beds 20 are arranged in a stacking and separating way, the adjacent fluidizing zones 21 are communicated with each other by air flow, the material storage zone 22 is arranged beside the fluidizing zones 21, the material storage zone 22 is provided with a feeder 30, and the feeder 30 is used for feeding the adsorbing materials in the material storage zone 22 into the fluidizing zone 21 of the next layer of fluidized bed 20.
When the gas treatment device is used, waste gas containing volatile organic compounds enters the adsorption fluidized bed reaction device through the gas inlet 11, the bottom of the waste gas is stirred by using carried kinetic energy to adsorb adsorption materials which are close to saturation, then the waste gas flows upwards and enters the fluidization area 21, the gas intensively stirs the adsorption materials in the fluidization area 21 to form a fluidization state, meanwhile, the adsorption materials are fully contacted with the volatile organic compounds in the gas, the adsorption of the volatile organic compounds is realized, the gas to be treated is repeatedly subjected to the above process and passes through a plurality of layers of fluidized beds 20, and the purified gas is discharged from the gas outlet 12 at the top.
It should be noted that the adsorbing material enters the device from the reactor inlet 13 and is accumulated in the material storage area 22 of the uppermost fluidized bed 20, and after the material storage area 22 is filled, the rest adsorbing material enters the fluidizing area 21 to be mixed with the gas to be treated and adsorb the volatile organic compounds in the gas; by controlling the material feeder 30 in the material storage area 22, the material in the material storage area 22 on the upper layer can be discharged into the fluidizing area 21 on the lower layer and then enters the material storage area 22; that is, after the adsorbing material passes through the fluidized beds 20 repeatedly, the adsorbing material with saturated adsorption finally reaches the bottom of the device and is discharged out of the system from the discharge port 14 at the bottom.
After the adsorption fluidized bed reaction device is adopted, the continuous operation of a single tower is realized, and the investment cost and the operation cost of the system are effectively reduced; and the gas is in countercurrent contact with the adsorption material, the maximization of mass transfer driving force can be realized in each layer of fluidized bed 20, and the discharged adsorption material is almost completely saturated, thereby providing great convenience for regeneration and pollutant recycling.
In order to realize the ascending flow of the gas flow, the bottom of the fluidization region 21 is provided with a fluidization plate 211, and the fluidization plate 211 is one or more of a punching plate, a screen and a sintered porous plate, and when the pore diameter is properly set, not only the adsorption material cannot permeate the fluidization plate 211, but also the gas can smoothly flow through the multilayer fluidized bed 20.
In addition, the material storage area 22 is mainly used for storing the adsorbing material, so it is important to ensure the sealing performance of the material storage area 22, and to solve this problem, the material storage area 22 includes the partition 221 and the sealing plate 222, and the partition 221, the sealing plate 222 and the inner wall of the adsorption fluidized bed reaction apparatus enclose the material storage area 22, so that the adsorbing material is sealed and stored by the partition 221 and the sealing plate 222 with good sealing performance.
Of course, since the feeding device 30 needs to feed the adsorbing material into the next fluidized bed 20, at this time, an opening matched with the feeding device 30 needs to be formed on the partition 221 to ensure that the feeding of the feeding device 30 can be normally performed; in addition, the present embodiment also provides for the stability of the device, and the activation of the material feeder 30 is used to feed a certain amount of the adsorption material into the fluidizing zone 21 of the next fluidized bed 20, for example, the material feeder 30 can be a piston type or a screw type conveyor to ensure the stable amount of the adsorption material in each fluidized bed 20.
Further, since the change of the adsorbent should be maintained in order to maintain the operation stability of the adsorption fluidized bed reactor, when the adsorbent is discharged from the discharge port 14, the same amount of the adsorbent may be discharged from the feed port 13, thereby ensuring the change of the adsorbent to be stable.
A second embodiment of the adsorption fluidized bed reaction apparatus is shown in fig. 3, which is substantially identical to the first embodiment of the adsorption fluidized bed reaction apparatus except that the gas inlet 11 extends into the interior of the adsorption fluidized bed reaction apparatus and faces the bottom of the adsorption fluidized bed reaction apparatus to stabilize the gas flow and improve the stability of the operation of the apparatus; also to further improve the stability of the air flow, the present embodiment is further provided with a diffuser plate (not shown) inside the air inlet 11 to optimize the stability of the air flow inside the device.
The third embodiment of the absorption fluidized bed reactor is substantially the same as the second embodiment of the absorption fluidized bed reactor, except that the absorption fluidized bed reactor is further provided with a timing controller (not shown), the timing controller is electrically connected to the feeding device 30, and the timing controller is used for controlling the feeding device 30 to feed materials at regular time, so that the absorption materials in each fluidized bed 20 are in a stable and variable state, thereby improving the operation stability of the absorption fluidized bed reactor.
The fourth embodiment of the absorption fluidized bed reactor is substantially the same as the third embodiment of the absorption fluidized bed reactor, except that a concentration sensor (not shown) is arranged in the gas outlet 12, the concentration sensor is electrically connected with the feeding devices 30, when the concentration sensor detects that the exhaust gas concentration reaches a preset value, each layer of feeding devices 30 sequentially operates, and the absorption materials are fed into the fluidizing zone 21 of the next fluidized bed 20, so that the absorption materials in each fluidized bed 20 are in a stable change state, and the operation stability of the absorption fluidized bed reactor is improved.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims (8)

1. An adsorption fluidized bed reaction device is characterized in that,
the adsorption fluidized bed reaction device is provided with an air inlet, an air outlet, a feed inlet and a discharge outlet which are communicated with the interior of the adsorption fluidized bed reaction device, the air inlet and the discharge outlet are arranged at the lower part of the adsorption fluidized bed reaction device, and the air outlet and the feed inlet are arranged at the upper part of the adsorption fluidized bed reaction device;
the adsorption fluidized bed reaction device is characterized in that a plurality of layers of fluidized beds are arranged in the adsorption fluidized bed reaction device from top to bottom, the plurality of layers of fluidized beds are provided with a fluidizing zone and a material storage zone which are communicated with each other, the fluidizing zones of the plurality of layers of fluidized beds are arranged in a stacking and separating mode, the adjacent fluidizing zones are communicated with each other through air flow, the material storage zone is arranged beside the fluidizing zone, and a feeding device is arranged in the material storage zone and used for feeding an adsorption material in the material storage zone into the next layer of fluidized bed.
2. The adsorptive fluidized bed reactor according to claim 1, wherein the bottom of said fluidizing zone is a fluidizing plate, said fluidizing plate is one or more of a perforated plate, a screen, a sintered perforated plate.
3. The absorption fluidized bed reactor as set forth in claim 1, wherein said holding area comprises a partition and a sealing plate, said partition, said sealing plate and an inner wall of said absorption fluidized bed reactor enclosing said holding area.
4. The apparatus of claim 1, wherein the activation of the feeder is used to feed a metered amount of adsorbent material into the fluidization region of the next layer of the fluidized bed.
5. The absorption fluidized bed reactor as claimed in any one of claims 1 or 4, further comprising a timing controller, wherein the timing controller is electrically connected to the feeding device, and the timing controller is used for controlling the feeding device to feed materials at regular time.
6. The absorption fluidized bed reactor as claimed in any one of claims 1 or 4, wherein a concentration sensor is disposed at the gas outlet, the concentration sensor is electrically connected to the feeding devices, and when the concentration of the exhaust gas measured by the concentration sensor reaches a predetermined value, the feeding devices of each layer are sequentially operated to feed the adsorbing material into the fluidized zone of the next fluidized bed.
7. The adsorption fluidized bed reactor of claim 1, wherein the gas inlet extends into the interior of the adsorption fluidized bed reactor and toward the bottom of the adsorption fluidized bed reactor.
8. The adsorptive fluidized bed reactor according to any one of claims 1 or 7, wherein a diffuser plate is disposed in said gas inlet.
CN202021429752.7U 2020-07-20 2020-07-20 Reaction device of adsorption fluidized bed Active CN213375846U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114870567A (en) * 2022-05-24 2022-08-09 广州金鹏环保工程有限公司 Two-phase flow adsorption reactor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114870567A (en) * 2022-05-24 2022-08-09 广州金鹏环保工程有限公司 Two-phase flow adsorption reactor
CN114870567B (en) * 2022-05-24 2023-01-06 广州金鹏环保工程有限公司 Two-phase flow adsorption reactor

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