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A preparation method of a polyacrylonitrile fiber organic waste gas adsorbent, an adsorption device and an adsorption method using the same

A polyacrylonitrile fiber, organic waste gas technology, applied in separation methods, chemical instruments and methods, inorganic chemistry and other directions, can solve the problems of complex maintenance and operation process, difficult to clean, etc., to increase adsorption performance, reduce operating costs and materials effect of cost

Active Publication Date: 2022-04-19
江苏中科睿赛环境工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the adsorption equipment currently on the market has problems such as complicated maintenance and operation process and difficult cleaning.

Method used

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  • A preparation method of a polyacrylonitrile fiber organic waste gas adsorbent, an adsorption device and an adsorption method using the same
  • A preparation method of a polyacrylonitrile fiber organic waste gas adsorbent, an adsorption device and an adsorption method using the same

Examples

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Effect test

Embodiment 1

[0071] This embodiment provides a preparation method of polyacrylonitrile fiber organic waste gas adsorbent, the preparation method is as follows figure 1 The reaction process shown comprises the following steps:

[0072] (1) Preparation of modified polyacrylonitrile: 4g polyacrylonitrile fiber, 200ml methanol, 16ml deionized water, 12g sodium hydroxide and 12g hydroxylamine hydrochloride (NH 2 OH·HCl) was added into a 500ml reaction vessel, and the reaction was continued for 4h with magnetic stirring at a speed of 20r / min, the reaction temperature was 25°C, and the modified polyacrylonitrile obtained by the reaction was continuously refluxed during the reaction;

[0073] (2) Preparation of graphene oxide solution: graphene oxide was prepared by a redox method, and the obtained graphene oxide (GO) was ultrasonically dispersed in deionized water to obtain a graphene oxide solution;

[0074] (3) Preparation of polyacrylonitrile fiber organic waste gas adsorbent: slowly pour the...

Embodiment 2

[0077] This embodiment provides an organic waste gas adsorption device, the adsorption device is as figure 2 As shown, the housing 1 is included, and the interior of the housing 1 is provided with two layers of adsorption modules along the direction of gas flow, and the first adsorption module 2 and the second adsorption module 3 are in sequence from bottom to top, wherein the adsorption modules used are prepared in Example 1. For the obtained polyacrylonitrile fiber organic waste gas adsorbent, the adsorption module is detachably arranged inside the shell 1, and the support device is fixed inside the shell 1, and the support device is used to place the adsorption module.

[0078] A detachable baffle is arranged between the first adsorption module 2 and the second adsorption module 3, and the detachable baffle is composed of a first controllable baffle 8 and a second controllable baffle 10 that can be opened and closed independently. After the baffle 8 and the second controll...

Embodiment 3

[0082] This example provides an organic waste gas adsorption method. The organic waste gas adsorption device provided in Example 2 is used to perform adsorption operation on organic waste gas. Organic waste gas pollutants are produced in the process, and the main pollutants included are benzene (23mg / m 3 ), the total of toluene and xylene (68mg / m 3 ) and VOCs (125mg / m 3 ).

[0083] The specific adsorption operation includes the following steps:

[0084] (1) The organic waste gas enters the organic waste gas adsorption device and undergoes adsorption treatment by the first-stage adsorption module.

[0085] (2) Take a sample from the first detection port to check whether the adsorbed gas meets the emission standard (referring to the local surface coating volatile organic compound emission standard in Tianjin, the maximum allowable emission concentration of the main pollutants in the exhaust gas is: the maximum limit of benzene The value concentration is 1mg / m 3 , the total ...

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Abstract

The invention provides a preparation method of a polyacrylonitrile fiber organic waste gas adsorbent, an adsorption device using the same, and an adsorption method. The preparation method comprises: reacting polyacrylonitrile and hydroxylamine hydrochloride to obtain modified polyacrylonitrile, modifying polyacrylonitrile The polyacrylonitrile fiber organic waste gas adsorbent is prepared by reacting polyacrylonitrile and graphene oxide. The invention adopts polyacrylonitrile fiber with larger specific surface area to adsorb volatile organic compounds, and uses hydroxylamine hydrochloride to modify it, introduces amino group and hydroxyl group, and then selects graphene oxide with larger specific surface area and rich groups to further modify polypropylene Acrylic fiber, through multi-step modification, enriches the functional groups of polyacrylonitrile fiber adsorbent and improves the adsorption performance.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, and relates to a preparation method of an adsorbent, an adsorption device using the same and an adsorption method, in particular to a preparation method of a polyacrylonitrile fiber organic waste gas adsorbent, an adsorption device and an adsorption method using the same . Background technique [0002] As my country's industrial production continues to increase, the problem of exhaust gas pollution is also more serious. The discharge of industrial organic waste gas will not only damage the ecological environment, but also seriously affect people's health. For example, organic waste gas containing benzene can cause damage to the human central nervous system, thereby affecting the normal operation of the nervous system. The organic waste gas containing amyl alcohol can cause headaches, diarrhea and other symptoms in people. Therefore, it is urgent to treat organic waste gas. As an e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30B01D53/02
CPCB01J20/261B01J20/20B01J20/28023B01D53/02B01D2257/70
Inventor 岳仁亮冯丽华齐丛亮尤胜胜沈晓玲
Owner 江苏中科睿赛环境工程有限公司