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Adsorbing and desorbing method of multi-bed activated carbon adsorber

An activated carbon adsorption and adsorber technology, which is applied in chemical instruments and methods, separation methods, and dispersed particle separation, can solve problems such as incomplete desorption, reduce the adsorption capacity of the adsorber, and exhaust exhaust gas exceeding the standard, so as to reduce the heat energy of desorption Loss, the effect of reducing the recovery cost

Active Publication Date: 2013-07-17
洛阳印通环保科技有限公司 +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] 2. If the desorption is not complete in some areas of the activated carbon bed, the re-adsorption of the activated carbon will cause the solvent gas to first penetrate the activated carbon bed in these areas, causing the exhaust gas to exceed the standard
Force the system to stop the adsorption operation, greatly reducing the adsorption capacity of the adsorber
[0006] 3. Due to the difference in air permeability caused by the structure of the adsorber and the uniformity of the activated carbon bed, the desorption gas flow rate needs to reach 0.7 to 1.5 times the adsorption gas flow rate to achieve uniform desorption regeneration of the activated carbon in the adsorber
Solve the problem of incomplete desorption and regeneration of activated carbon in local areas

Method used

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  • Adsorbing and desorbing method of multi-bed activated carbon adsorber

Examples

Experimental program
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Effect test

Embodiment 1

[0029] When the adsorber is adsorbing, switch the pipeline to realize the parallel operation of the activated carbon bed during adsorption. At this time, low-concentration and large-flow organic waste gas enters the adsorber. After the organic waste gas is adsorbed, the exhaust gas that meets the national emission standard is directly discharged. As the adsorption progresses, when the exhaust gas does not meet the standard, it will switch to the desorption process. At this time, through the switch between the adsorption gas pipeline and the desorption gas pipeline connected by the adsorber, the series operation of the activated carbon bed is realized, and the desorption gas After heating, it enters the adsorber for desorption. After the desorbed desorbed gas is discharged from the adsorber, it enters the subsequent treatment process (solvent recovery treatment), and the treated gas is sent to the heater for heating through the desorption circulation fan. desorption.

Embodiment 2

[0031] Most of the others are the same as in Example 1, and the only difference from Example 1 is that a plurality of independent single-bed adsorbers are used to replace a single multi-bed activated carbon adsorber.

Embodiment 3

[0033] Most of the others are the same as in Example 1, and the only difference from Example 1 is that a plurality of independent multi-bed adsorbers are used to replace a single multi-bed activated carbon adsorber. The specific pipeline switching method can be easily implemented by those skilled in the art with reference to the accompanying drawings, and does not require creative work, so it will not be described in detail here.

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Abstract

The invention provides an adsorbing and desorbing method of a multi-bed activated carbon adsorber. According to the adsorber, a multi-bed structure is adopted. During adsorption, each bed is in parallel working, and adsorbed gas is simultaneously adsorbed by each bed. During desorption, each bed is in serial working, desorbed gas sequentially passes through each bed, and desorbed solvent gas is conveyed into a subsequent process for treatment. According to the adsorbing and desorbing method of the multi-bed activated carbon adsorber, the flow rate of circular desorbed gas is effectively reduced, and the consumption of desorbing heat energy is lowered.

Description

technical field [0001] The invention relates to an adsorption and desorption method of an adsorber, in particular to an adsorption and desorption method of an activated carbon adsorber used for recovery of low-concentration and large-flow organic waste gas. Background technique [0002] In a variety of industrial production processes (such as plastic flexible packaging printing, coating, painting, leather processing, etc.), there are a large number of low-concentration and high-flow organic waste gas emissions, which need to be recycled and treated. [0003] The following phenomena and problems exist in the recovery process of activated carbon adsorption and heating desorption under the protection of flame retardant gas: [0004] 1. During the heating and desorption process of the solvent adsorbed by activated carbon, a certain gas flow rate is required to transport the desorbed solvent gas to the subsequent process to complete the recovery of the solvent. The recovered gas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/02
Inventor 孙宗长胡建林袁亦扬孙绍文朗晓锋
Owner 洛阳印通环保科技有限公司
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