Series targeted adsorption and parallel desorption organic waste gas treatment device

A treatment device and organic waste gas technology, applied in the separation method, combustion type, lighting and heating equipment, etc., can solve the problems of low purification efficiency of primary activated carbon adsorption, purification efficiency cannot be guaranteed, purification efficiency cannot be guaranteed, etc., to achieve The effect of saving land occupation and one-time investment, saving one-time investment and land occupation, and saving desorption time

Active Publication Date: 2021-04-30
南大恩洁优环境技术江苏股份公司
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Problems solved by technology

However, due to the relatively complex pollutant components and the existence of competitive adsorption, the conventional primary activated carbon adsorption and purification efficiency is not high; the desorption and cooling time of each carbon box is relatively long, in order to achieve continuous production, the general adsorption carbon box reaches adsorption saturation The desorption is only carried out when the adsorption band is too long, which causes safety problems caused by an excessively high peak concentration during desorption. At the same time, the adsorption breakthrough point has been reached before the adsorption saturation, and the purification efficiency cannot be guaranteed.
[0003] According to relevant research, the ratio of the pore size of the adsorbent to the molecular diameter of the adsorbate is between 1.7 and 3.0, and the adsorbent can effectively adsorb pollutants. treatment, purification efficiency cannot be guaranteed
In order to improve the purification efficiency, there are also two-stage adsorption and three-stage adsorption on the market, or even more. The conventional N-stage adsorption requires a 2N-stage carbon box to achieve it. Not only does it occupy a large area, but the one-time investment cost is also too high. high

Method used

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  • Series targeted adsorption and parallel desorption organic waste gas treatment device
  • Series targeted adsorption and parallel desorption organic waste gas treatment device
  • Series targeted adsorption and parallel desorption organic waste gas treatment device

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Effect test

Embodiment 1

[0037] see figure 1 , the adsorption box 12 is provided with four groups, which are numbered 1#, 2#, 3# and 4# from left to right. The diameter and its adsorption characteristics are used to determine the adsorbent to be used. Molecular sieves are filled in the adsorption boxes of 1# and 4#, and activated carbon is filled in the adsorption boxes of 2# and 3#. Two-stage series adsorption is used to treat VOCs waste gas , the exhaust gas first passes through the 4# adsorption box, the three-way valve A of the 4# adsorption box is connected with the exhaust gas inlet pipe 11, and the two-way valve is opened. After treatment, the gas enters the 3-way valve B of the 4# adsorption box #The three-way valve A of the adsorption box. At this time, the two-way valve of the 3# adsorption box is opened, and the gas enters the 3# adsorption box for secondary adsorption. After the treatment, the gas enters from the three-way valve B of the 3# adsorption box. The exhaust pipe 13 is driven by...

Embodiment 2

[0039] When the production load of the enterprise increases or the temperature is high in summer, VOCs are not easy to adsorb, in order to ensure the purification efficiency, a three-stage series adsorption method is used to treat VOCs waste gas, see figure 1 , the adsorption box 12 is provided with four groups, which are numbered as 1#, 2#, 3# and 4# from left to right, and the two-way valves of 4#, 3# and 2# are opened at the same time for adsorption Treatment, after adsorption for a period of time, close the intake two-way valve of the 4# adsorption box, open the intake two-way valve of the 1# adsorption box, the adsorption mode becomes 3#, 2#, 1# for adsorption, and at the same time The 4# adsorption box is desorbed. After the desorption is complete, close the inlet two-way valve of the 3# adsorption box. The adsorption mode is changed to 2#, 1#, and 4# for adsorption. The box can be put into use immediately as a terminal adsorber. After two-stage adsorption, the exhaust g...

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Abstract

The invention discloses a series targeted adsorption and parallel desorption organic waste gas treatment device, which comprises a series adsorption system, a parallel desorption system and a catalytic combustion system; Circulation pipeline and main fan; parallel desorption system includes desorption fan, secondary heat exchanger, desorption intake pipe, automatic valve and desorption exhaust pipe; catalytic combustion system includes primary heat exchanger A, primary heat exchange B, heater and catalytic reactor. The invention selects corresponding targeted adsorbents according to the molecular diameter and adsorption characteristics of different pollutants, the thin layer design of the adsorption bed and the multi-stage parallel desorption mode, shortens the desorption time and can effectively control the desorption peak concentration. In order to avoid the safety problems caused by desorption due to the excessively long adsorption zone, the relative stability of the VOCs concentration during desorption reduces the heating frequency of the catalytic combustion system, avoids the agglomeration of the catalyst, and makes full use of the energy saved by the combustion reaction heat of VOCs.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and in particular relates to a serial targeted adsorption and parallel desorption organic waste gas treatment device. Background technique [0002] Most of the VOCs emitted by industrial enterprises have the characteristics of large air volume and multiple components. It is a common treatment process to adopt adsorption concentration, desorption and catalytic combustion. However, due to the relatively complex pollutant components and the existence of competitive adsorption, the conventional primary activated carbon adsorption and purification efficiency is not high; the desorption and cooling time of each carbon box is relatively long, in order to achieve continuous production, the general adsorption carbon box reaches adsorption saturation Desorption is carried out when the adsorption band is too long, which causes safety problems caused by the high peak concentration during desorpti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/04F23G7/07
CPCB01D53/04F23G7/07
Inventor 陆朝阳徐遵主张纪文李明蒋海涛
Owner 南大恩洁优环境技术江苏股份公司
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