CN216259922U - VOCs treatment system for in-situ regeneration of activated carbon - Google Patents
VOCs treatment system for in-situ regeneration of activated carbon Download PDFInfo
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- CN216259922U CN216259922U CN202122977168.6U CN202122977168U CN216259922U CN 216259922 U CN216259922 U CN 216259922U CN 202122977168 U CN202122977168 U CN 202122977168U CN 216259922 U CN216259922 U CN 216259922U
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Abstract
The utility model discloses an active carbon in-situ regeneration VOCs treatment system, which comprises an in-situ adsorption regeneration device, a heater and a burner, wherein the in-situ adsorption regeneration device comprises an adsorption area and a desorption area, and the cross sections of the two areas are both in a fan shape; a shell of the adsorption zone is provided with a VOCs gas inlet and a treatment gas outlet; a thermal desorption gas inlet and a desorption gas outlet are arranged on the shell of the desorption area, and the VOCs gas inlet is connected with a VOCs source; the thermal desorption gas inlet is connected with an air source through a heater; the desorption gas outlet is connected with the burner.
Description
Technical Field
The utility model belongs to the technical field of VOCs treatment, and particularly relates to an active carbon in-situ regeneration VOCs treatment system.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The activated carbon has better adsorption performance and can be used for treating VOCs, but the activated carbon is easy to saturate in the treatment process of VOCs, and if the activated carbon is frequently replaced, the cost can be greatly increased, so that the saturated activated carbon is frequently required to be reused after regeneration. The regeneration method commonly used for activated carbon is generally as follows: collect the regeneration of concentrating after the saturated active carbon, waste time and energy, still need provide dedicated regenerating unit in addition, be unfavorable for saving the cost.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide an active carbon in-situ regeneration VOCs treatment system.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
an active carbon in-situ regeneration VOCs treatment system comprises an in-situ adsorption regeneration device, a heater and a burner, wherein,
the in-situ adsorption regeneration device comprises an adsorption area and a desorption area, and the cross sections of the two areas are both in a fan shape;
a shell of the adsorption zone is provided with a VOCs gas inlet and a treatment gas outlet; a thermal desorption gas inlet and a desorption gas outlet are arranged on the shell of the desorption area, and the VOCs gas inlet is connected with a VOCs source; the thermal desorption gas inlet is connected with an air source through a heater; the desorption gas outlet is connected with the burner.
The above-described embodiments of the present invention achieve the following advantageous effects:
when adopting this system to handle VOCs gas, VOCs gas gets into the adsorption zone after the air branch road cooling, and the lower VOCs gas of temperature is changeed by active carbon adsorption. The treated VOCs gas can reach the discharge standard.
When the active carbon in the adsorption zone reaches the saturation, the active carbon region with saturation rotates to communicate with the thermal desorption gas, the air that adopts to be heated carries out the thermal desorption to the saturated active carbon, and the last adsorbed VOCs of active carbon is analyzed to the hot-air in for VOCs concentration in the desorption gas is higher, directly lets in this part gas and burns in the combustor.
Therefore, the system can realize the in-situ regeneration of the activated carbon, and has simple structure and low investment cost.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
FIG. 1 is a schematic diagram of the overall structure of an in-situ activated carbon regeneration VOCs treatment system according to example 1 of the present invention;
FIG. 2 is a sectional view of an in-situ adsorption regeneration apparatus according to example 1 of the present invention;
fig. 3 is a schematic view of the overall structure of embodiment 2 of the present invention.
In the figure: the mutual spacing or size is exaggerated to show the position of each part, and the schematic diagram is only used for illustration;
the system comprises a workshop 1, a gas collecting hood 2, an air branch 3, a heater 4, an in-situ adsorption and regeneration device 5, a combustor 6, an adsorption area 7, a desorption area 8 and a cooling area 9.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
An active carbon in-situ regeneration VOCs treatment system comprises an in-situ adsorption regeneration device, a heater and a burner, wherein,
the in-situ adsorption regeneration device comprises an adsorption area and a desorption area, and the cross sections of the two areas are both in a fan shape;
a shell of the adsorption zone is provided with a VOCs gas inlet and a treatment gas outlet; a thermal desorption gas inlet and a desorption gas outlet are arranged on the shell of the desorption area, and the VOCs gas inlet is connected with a VOCs source; the thermal desorption gas inlet is connected with an air source through a heater; the desorption gas outlet is connected with the burner.
In some embodiments, the VOCs gas inlet is also in communication with air via an air bypass. And the air and the VOCs are premixed and then introduced into the in-situ adsorption regeneration device.
In some embodiments, the in-situ adsorption regeneration device comprises a cylindrical shell and a rotary bearing frame, wherein the rotary bearing frame is used for containing activated carbon and is divided into at least two areas by a partition plate arranged in the radial direction, and the cross sections of the two areas are both in a fan shape;
the edges of the partition plates are all in close contact with the inner wall of the shell.
Further, the rotary bearing frame is provided with a rotary shaft, and the rotary shaft is connected with a motor. The motor is used for driving the rotary bearing frame to rotate.
Further, the gaseous import of VOCs is located the bottom of casing, and the process gas export is located the top of casing, and the gaseous import of VOCs and the same generating line setting that the process gas export is close to the casing.
Adopt this kind of mode, when the active carbon of a certain region and the gaseous import intercommunication of VOCs, the gaseous import of VOCs flows in from the casing bottom, flows out from the top, makes the gaseous active carbon adsorption layer of flowing through of VOCs to the improvement is to the gaseous treatment effeciency of VOCs.
Further, the thermal desorption gas inlet is located the bottom of casing, and the desorption gas outlet is located the top of casing, and the thermal desorption gas inlet sets up with the desorption gas outlet is close to the same generating line of casing. So as to improve the regeneration efficiency of the activated carbon.
In some embodiments, the heater is a heater and the heating medium is burner flue gas.
Further, the number of the partition plates is 3, and the rotary carrier is divided into 3 regions by the 3 partition plates.
Still further, the sector center angles of the 3 regions are all 120 °.
Namely, the activated carbon was divided into 3 regions equally using a partition plate.
Still further, still be provided with cooling gas inlet and cooling gas outlet on the casing, cooling gas inlet is located the casing bottom, and the cooling gas outlet is located the casing top, and cooling gas inlet and cooling gas outlet are close to the same generating line setting of casing.
Since the temperature of the activated carbon after thermal desorption regeneration is high, the VOCs gas cannot be directly adsorbed, and therefore, the activated carbon needs to be cooled. Separate the active carbon for 3 regions, correspond adsorption zone, desorption district and cooling space simultaneously, 3 regions can the simultaneous working, and then can guarantee the continuity that the VOCs gas was administered.
And furthermore, a cooling gas inlet is communicated with natural air, and a cooling gas outlet is connected with the combustor.
The cooling gas outlet can also be connected with a heater, exchanges heat with boiler flue gas, and is used as thermal desorption gas to desorb saturated activated carbon after being heated.
The active carbon temperature after thermal desorption regeneration is higher, and natural air is also heated to the active carbon refrigerated in-process, and the air that is heated is sent into and can be combustion-supporting better in the combustor, and then can be to the better burning processing of thermal desorption's VOCs.
In some embodiments, the in situ adsorption regeneration device is a molecular sieve wheel.
The utility model is further described with reference to the following figures and specific examples.
Example 1
As shown in fig. 1, an active carbon normal position regeneration VOCs administers system, including the air branch road, normal position adsorbs regenerating unit 5, heater 4 and combustor 6, as shown in fig. 2, normal position adsorbs regenerating unit 5 and includes cylindrical casing and rotatory carrier, the rotatory active carbon that has held on the carrier, the active carbon can the layering setting, also can wholly fill, form the adsorption column, the baffle through radial setting will rotate the carrier and separate for 3 regions, 3 regional cross sections are fan-shaped, and 3 fan-shaped central angles that correspond are 120, 3 fan-shaped regional adsorption zone 7 that correspond respectively, desorption district 8 and cooling space 9.
The edges of the partition plates are in close contact with the inner wall of the shell to prevent VOCs gas, thermal desorption gas and cooling gas from leaking to adjacent areas.
Be provided with the gaseous import of VOCs and the export of process gas on the casing, the gaseous import of VOCs is located the bottom of casing, and the export of process gas is located the top of casing, and the gaseous import of VOCs and the export of process gas are close to the same generating line setting of casing. The detection device can be arranged at the position of the treated gas outlet to detect the content of VOCs in the discharged gas so as to determine whether the discharged gas reaches the standard or not, if so, the discharged gas is directly discharged, and if not, the part of gas is required to be circularly treated to reach the standard and then discharged. Meanwhile, whether the activated carbon is saturated or not and whether regeneration is needed or not can be judged by detecting whether the content of VOCs in the exhaust gas reaches the standard or not.
Set up thermal desorption gas inlet and desorption gas outlet on the casing, thermal desorption gas inlet is located the bottom of casing, and desorption gas outlet is located the top of casing, and thermal desorption gas inlet and desorption gas outlet are close to the same generating line setting of casing. So as to improve the regeneration efficiency of the activated carbon.
The gaseous import of VOCs respectively with VOCs source and air connection, the gaseous each factory building of VOCs source for producing VOCs, can set up the gas collecting channel in the top of the gaseous position of each factory building production VOCs and collect VOCs is gaseous to adopt the pipeline to send the VOCs gas of collecting outward. The flow power of the VOCs gas and the air is provided by the induced draft fan. And a filter 3 is arranged on the VOCs gas inlet pipeline to prevent fine particles from blocking the pores of the in-situ adsorption regeneration device.
The thermal desorption gas inlet is connected with the air through the heater 4, the air can be heated by high-temperature flue gas generated by the burner, and the desorption gas outlet is connected with the burner. The flow of the thermal desorption gas and the desorption gas is conveyed by a draught fan.
The rotary bearing frame is provided with a rotary shaft, and the rotary shaft is connected with a motor. The motor is used for driving the rotary bearing frame to rotate. In order to fulfill its function, the specific structure of the swivel carrier may be as follows: including rotation axis and a plurality of tray of taking the mesh, the bearing installation is passed through at the both ends of rotation axis, and rotation axis and the coaxial setting of casing, and the one end and the motor of rotation axis are connected, and the motor is used for driving the rotation of rotation axis. The trays are distributed at different heights of the rotating shaft and bear the activated carbon. Since the tray is provided with the meshes, the VOCs gas can be allowed to directly contact the activated carbon through the meshes. A plurality of trays set up by layers, make VOCs gaseous a lot of through the activated carbon layer, through many times activated carbon adsorption, realize discharge to reach standard.
Still be provided with cooling gas inlet and cooling gas outlet on the casing, the cooling gas inlet is located the casing bottom, and the cooling gas outlet is located the casing top, and cooling gas inlet and cooling gas outlet are close to the same generating line setting of casing. The cooling gas inlet is communicated with natural air, and the cooling gas outlet is connected with the combustor. The flow of cooling gas is conveyed by a draught fan.
In order to realize simultaneous absorption, thermal desorption and cooling, three groups of inlets and outlets of a VOCs gas inlet, a treatment gas outlet, a thermal desorption gas inlet, a desorption gas outlet and a cooling gas inlet and a cooling gas outlet are spaced by enough distances to respectively correspond to an absorption area, a desorption area and a cooling area.
Example 2
As shown in fig. 3, the in-situ adsorption regeneration device 5 is a molecular sieve rotary wheel adsorption device, which is divided into an adsorption zone 7, a desorption zone 8 and a cooling zone 9, wherein the desorption zone leads out the desorption gas by a desorption fan and conveys the desorption gas to a burner by a pipeline, and the burner can be a boiler and sends the desorption gas into the boiler by a blower. The VOCs gas can enter the adsorption zone of the molecular sieve rotating wheel adsorption device after being filtered by the filter 3.
After passing through the molecular sieve rotating wheel cooling zone, the air is heated to 150-fold temperature by high-temperature high-pressure steam introduced from a boiler steam drum through a heat exchanger, then enters a desorption zone to carry out a zeolite molecular sieve regeneration process, the organic solvent adsorbed on the rotating wheel is desorbed by the high-temperature air, and the organic matter content of the concentrated gas is 10 times that of the concentrated gas.
The rotary wheel adsorption material is a hydrophobic molecular sieve material for adsorbing organic matters, the rotary wheel is divided into an adsorption area, a cooling area and a desorption area, and the rotary wheel rotates under the drive of a motor. The waste gas is changed into relatively clean air through the adsorption zone, and the content of VOCs is reduced to 60mg/m3The following. As VOCs adsorbates accumulate, the molecular sieve becomes saturated and the adsorption capacity decreases.
The molecular sieve rotary wheel adsorption and desorption process are continuously carried out, and the working performance is stable; most of organic matters can be thoroughly removed, and the treatment efficiency is high.
The waste gas of large air quantity and low-concentration VOCs is changed into the waste gas of small air quantity and high concentration, so that the subsequent treatment is convenient, and the energy consumption of incineration treatment is reduced.
The thermal combustion method has the advantages of high treatment efficiency, simplicity, convenience and low cost. There is no selectivity for gas treatment, and VOCs can be converted into CO basically2And H2O。
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an active carbon normal position regeneration VOCs treatment system which characterized in that: comprises an in-situ adsorption regeneration device, a heater and a burner, wherein,
the in-situ adsorption regeneration device comprises an adsorption area and a desorption area, and the cross sections of the two areas are both in a fan shape;
a shell of the adsorption zone is provided with a VOCs gas inlet and a treatment gas outlet; a thermal desorption gas inlet and a desorption gas outlet are arranged on the shell of the desorption area, and the VOCs gas inlet is connected with a VOCs source; the thermal desorption gas inlet is connected with an air source through a heater; the desorption gas outlet is connected with the burner.
2. The activated carbon in-situ regeneration VOCs remediation system of claim 1, wherein: the gaseous import of VOCs still is provided with the filter through air branch and air intercommunication on the gaseous import pipeline of VOCs.
3. The activated carbon in-situ regeneration VOCs remediation system of claim 1, wherein: the in-situ adsorption regeneration device comprises a cylindrical shell and a rotary bearing frame, wherein the rotary bearing frame is filled with active carbon and is divided into at least two areas by a partition plate arranged in the radial direction, and the cross sections of the two areas are both in a fan shape;
the edges of the partition plates are all in close contact with the inner wall of the shell.
4. The activated carbon in-situ regeneration VOCs remediation system of claim 3, wherein: the rotary bearing frame is provided with a rotary shaft, and the rotary shaft is connected with a motor.
5. The activated carbon in-situ regeneration VOCs remediation system of claim 3, wherein: the gaseous import of VOCs is located the bottom of casing, and the process gas export is located the top of casing, and the gaseous import of VOCs and the same generating line setting that the process gas export is close to the casing.
6. The activated carbon in-situ regeneration VOCs remediation system of claim 3, wherein: the thermal desorption gas inlet is located at the bottom of the shell, the desorption gas outlet is located at the top of the shell, and the thermal desorption gas inlet and the desorption gas outlet are arranged close to the same bus of the shell.
7. The activated carbon in-situ regeneration VOCs remediation system of claim 3, wherein: the number of baffles is 3, and 3 baffles divide the spin carrier into 3 zones.
8. The activated carbon in-situ regeneration VOCs remediation system of claim 3, wherein: the shell is also provided with a cooling air inlet and a cooling air outlet, the cooling air inlet is positioned at the bottom of the shell, and the cooling air outlet is positioned at the top of the shell.
9. The activated carbon in-situ regeneration VOCs remediation system of claim 8, wherein: the cooling gas inlet is communicated with natural air, and the cooling gas outlet is connected with the combustor.
10. The activated carbon in-situ regeneration VOCs remediation system of claim 1, wherein: the in-situ adsorption regeneration device is a molecular sieve rotating wheel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115318065A (en) * | 2022-08-28 | 2022-11-11 | 山东绿立冠环保科技有限公司 | Low concentration organic waste gas purification treatment equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115318065A (en) * | 2022-08-28 | 2022-11-11 | 山东绿立冠环保科技有限公司 | Low concentration organic waste gas purification treatment equipment |
| CN115318065B (en) * | 2022-08-28 | 2023-08-08 | 青岛德尔通用环保科技有限公司 | Low-concentration organic waste gas purifying treatment equipment |
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