Search

CN-224207731-U - Active carbon exhaust treatment device

CN224207731UCN 224207731 UCN224207731 UCN 224207731UCN-224207731-U

Abstract

The utility model provides an active carbon waste gas treatment device, which comprises a tank body, an active carbon adsorption unit, an air distribution device, an air supply unit and a waste gas conveying unit, wherein the interior of the tank body is divided into a plurality of independent adsorption partitions through a longitudinal partition plate, the lower end of each partition is provided with an air inlet branch pipe, the top of each partition is provided with an air exhaust branch pipe and is communicated with an air exhaust main pipe, the active carbon adsorption unit consists of a layered active carbon component, the air distribution device realizes uniform distribution and independent control of air flow through an annular air supply/waste gas distribution main pipe and a crotch-shaped partition distribution branch pipe, the air supply unit regulates air supply quantity through a compression fan and a flowmeter, and the waste gas conveying unit controls waste gas input through an air extraction fan and a flowmeter. The device of the utility model dynamically opens and closes the partition and adjusts the air quantity based on the exhaust gas concentration and flow data, realizes the accurate matching of the adsorption area and the load, breaks through the efficiency bottleneck of the fixed bed, improves the utilization rate of the activated carbon to 85% -95%, reduces the energy consumption by 15% -20%, supports the rapid partition switching and the modularized maintenance, and remarkably optimizes the operation and maintenance cost.

Inventors

  • Ye meichen
  • HU DIE
  • MAO SHUHUA
  • DING CHANGCHUN
  • ZHOU LINA

Assignees

  • 南京长三角绿色发展研究院有限公司

Dates

Publication Date
20260508
Application Date
20250527

Claims (10)

  1. 1. An activated carbon exhaust treatment device, comprising: the tank comprises a tank body (1), wherein the interior of the tank body (1) is longitudinally divided into a plurality of adsorption zones which are not communicated with each other and have equal volumes; the activated carbon adsorption unit is arranged in the middle of the inside of each adsorption zone and comprises a plurality of activated carbon adsorption components; the air distribution device comprises an air supply distribution main pipe (8), an exhaust gas distribution main pipe (9), a plurality of partition distribution main pipes (10) and a plurality of partition distribution branch pipes (11), wherein the air supply distribution main pipe (8) and the exhaust gas distribution main pipe (9) are annularly and concentrically arranged below the adsorption partition, the partition distribution main pipes (10) are equidistantly arranged on the inner ring of the air supply distribution main pipe (8) and the exhaust gas distribution main pipe (9) and correspond to the lower ends of the adsorption partition one by one, each partition distribution main pipe (10) is provided with an air supply branch valve and an air inlet branch valve which are independently controlled, and each partition distribution branch pipe (11) is connected to the partition distribution main pipe (10) in a crotch shape.
  2. 2. The activated carbon exhaust treatment device according to claim 1, wherein at least 3 adsorption zones are provided, and at least one of the adsorption zones serves as a spare adsorption zone.
  3. 3. The activated carbon exhaust gas treatment device according to claim 1, characterized in that the activated carbon adsorption assembly comprises a plurality of activated carbon adsorption elements (201), the activated carbon adsorption elements (201) comprising a support layer, a main adsorption layer and a filter layer which are arranged in sequence from bottom to top; The supporting layer comprises a screen mesh with the aperture of 2-5mm and a coarse stone supporting layer which are arranged at the bottom; The main adsorption layer is filled with active carbon particles with micropores accounting for 70%, and the thickness of the main adsorption layer is 1-1.5m; the filter layer is a glass fiber net with the aperture of 8-10 mu m.
  4. 4. The activated carbon waste gas treatment device according to claim 1, further comprising an air supply unit, wherein the air supply unit comprises an air supply pipe (12), a compression fan (15) and an air buffer tank (14), the compression fan (15) is arranged at an air inlet of the air supply pipe (12), the air buffer tank (14) is arranged between the air inlet and the air outlet of the air supply pipe (12), the air outlet of the air supply pipe (12) is communicated with the air inlet of the air supply distribution header pipe (8), and the air inlet of the partition distribution header pipe (10) is communicated with the air outlet of the air supply distribution header pipe (8).
  5. 5. The activated carbon waste gas treatment device according to claim 1, further comprising a waste gas conveying unit, wherein the waste gas conveying unit comprises a gas conveying pipe (13) and a gas suction fan (16), the gas suction fan (16) is arranged on the gas conveying pipe (13), a gas outlet of the gas conveying pipe (13) is communicated with a gas inlet of the waste gas distribution header pipe (9), and a gas inlet of the partition distribution header pipe (10) is communicated with a gas outlet of the waste gas distribution header pipe (9).
  6. 6. The activated carbon waste gas treatment device according to claim 1, characterized in that each partition distribution branch pipe (11) is provided with an automatic control valve and a gas nozzle, the injection angle of the gas nozzle is 90 ° -160 °, and the distance between the gas nozzles is 500-600mm.
  7. 7. The activated carbon waste gas treatment device according to claim 1, wherein an exhaust manifold (4) is arranged at the top end of the exterior of the tank body (1), exhaust branch pipes (5) communicated to the exhaust manifold (4) are arranged at the exhaust end of the upper part of each adsorption partition, an air inlet branch pipe (6) is arranged at the air inlet end of the lower part of each adsorption partition, a material changing port (7) communicated to the exterior is arranged in each adsorption partition, and a sealing door is arranged at the material changing port (7).
  8. 8. The activated carbon exhaust gas treatment device according to claim 7, characterized in that a backflow branch pipe (17) is provided on the exhaust branch pipe (5), a backflow valve one is provided on the backflow branch pipe (17), one end of the backflow branch pipe (17) is communicated with the exhaust branch pipe, and the other end is communicated with the air inlet of the exhaust gas distribution header pipe (9).
  9. 9. The activated carbon exhaust gas treatment device according to claim 7, characterized in that a return manifold (18) is provided on the exhaust manifold (4), a second return valve is provided on the return manifold (18), one end of the return manifold (18) is communicated with the exhaust manifold (4), and the other end is communicated with the air inlet of the exhaust gas distribution manifold (9).
  10. 10. An activated carbon exhaust gas treatment device according to claim 7, characterized in that the top of the tank (1) has a conical structure with a wide bottom and a narrow top, and the angle of inclination of the conical structure is 30 ° -45 °.

Description

Active carbon exhaust treatment device Technical Field The utility model relates to the technical field of waste gas treatment, in particular to an active carbon waste gas treatment device. Background Volatile organic compounds are widely used as pollutants in industrial production, and the treatment efficiency directly influences the standard rate of environmental emission and the running cost of enterprises. The active carbon adsorption method is a mainstream technology for purifying waste gas of small and medium-sized enterprises due to the characteristics of low cost, mature process and the like. However, the conventional fixed bed activated carbon adsorption device exposes a series of technical bottlenecks in actual operation, and particularly when the concentration fluctuation working condition of volatile organic compounds is handled, the adsorption efficiency and the activated carbon utilization efficiency of the conventional fixed bed activated carbon adsorption device are obviously reduced. In the prior art, an activated carbon adsorption device generally adopts a single-layer or multi-layer fixed filling structure, the active carbon filling amount and the effective adsorption area of the activated carbon adsorption device are fixed after equipment is put into operation, and the static design causes the following technical defects: 1. The adsorption efficiency and the concentration are not matched, namely, when the concentration of volatile organic compounds in the waste gas is lower than a design threshold value, the contact area of excessive activated carbon causes insufficient adsorption power, so that the phenomenon of shallow penetration of an adsorption layer is caused, the effective adsorption capacity only plays 30% -50%, and when the concentration is suddenly increased, the fixed contact area cannot provide enough adsorption flux, so that the adsorption saturation speed is accelerated, and even the risk of penetration emission occurs. 2. In order to cope with peak concentration, the traditional design often fills active carbon in a transitional way, so that the initial cost of equipment is increased by 20% -30%, and meanwhile, the energy consumption of a fan is increased by more than 15% due to pressure drop loss caused by ineffective adsorption area under a low concentration working condition. 3. The dynamic response capability is lacking, namely the existing device lacks a concentration feedback regulation mechanism, can not dynamically regulate adsorption resource allocation according to real-time air inlet parameters (such as concentration and flow rate), and has extremely poor adaptability in intermittent discharge or production load change scenes. Based on the above drawbacks, there is a need to develop a treatment device capable of dynamically adjusting the effective contact area of activated carbon in real time in response to the concentration change of volatile organic compounds. Disclosure of utility model The utility model aims to provide an active carbon waste gas treatment device, which can dynamically adjust the quantity of activated adsorption partitions according to the change of waste gas concentration by designing a plurality of adsorption partitions which are arranged in parallel, so as to realize the distribution of adsorption resources according to the needs, thereby breaking through the efficiency bottleneck of the traditional fixed bed adsorber, achieving the cascade utilization targets of high-concentration large-flux adsorption and low-concentration fine utilization, and having important significance for reducing the operation and maintenance cost of environmental protection facilities of enterprises and improving the full life cycle use efficiency of active carbon. In order to achieve the above purpose, the present utility model proposes the following technical scheme: an activated carbon exhaust treatment device, comprising: the tank body is longitudinally divided into a plurality of adsorption zones which are not communicated with each other and have equal volumes; the activated carbon adsorption unit is arranged in the middle of the inside of each adsorption zone and comprises a plurality of activated carbon adsorption components; the air distribution device comprises an air supply distribution main pipe, an exhaust gas distribution main pipe, a plurality of partition distribution main pipes and a plurality of partition distribution branch pipes, wherein the air supply distribution main pipe and the exhaust gas distribution main pipe are annular and concentrically arranged below the adsorption partition, the partition distribution main pipes are equidistantly arranged on the inner ring of the air supply distribution main pipe and the inner ring of the exhaust gas distribution main pipe and correspond to the lower ends of the adsorption partitions one by one, each partition distribution main pipe is provided with an air supply branch valve and an air inlet bran