Styrene exhaust gas treatment method

A technology for waste gas treatment and styrene, which is applied in the direction of gas treatment, separation methods, chemical instruments and methods, etc., can solve problems such as easy polymerization, large thermal effect of polymerization and adsorption heat effect, inability to regenerate, complex device configuration, etc., to eliminate environmental risks and safety hazards, reduce styrene emissions, and occupy a small area

Active Publication Date: 2016-02-24
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

The condensation method can directly recover liquid styrene, but the condensation method needs to be lowered to a very low temperature to meet environmental protection standards, the energy consumption is high, and the device configuration is complicated and difficult to maintain
The adsorption method mostly uses ac

Method used

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  • Styrene exhaust gas treatment method

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Embodiment Construction

[0022] The invention provides a method for treating styrene waste gas. The method mainly includes the following steps: making countercurrent contact between styrene waste gas and an alkaline solution of potassium permanganate, and during the contact process, the alkaline solution of styrene and potassium permanganate Oxidation reaction occurs, C 6 h 5 CH=CH 2 +OH-+KMnO 4 =C 6 h 5 CH(O)CH 2 OH+MnO 2 +K 2 MnO 4 +H 2 O, after the reaction is completed, the waste gas that consumes styrene is discharged into the atmosphere.

[0023] Specifically, the styrene waste gas and the alkaline solution of potassium permanganate can be countercurrently contacted in the absorption tower, and the inside of the absorption tower is provided with a packing layer. Styrene waste gas enters the absorption tower from the bottom of the absorption tower, and the alkaline solution of potassium permanganate enters the absorption tower from the top of the absorption tower. In the packing layer o...

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Abstract

The invention discloses a styrene exhaust gas treatment method including the following steps: carrying out countercurrent contact of styrene exhaust gas with an alkaline solution of potassium permanganate, carrying out an oxidation reaction of styrene with the alkaline solution of potassium permanganate in the contact process, and after completion of the reaction, discharging the exhaust gas having styrene consumed into the atmosphere. With adopting of the technological process of spraying the potassium permanganate solution to absorb styrene, styrene-containing exhaust gas generated by refinery enterprise styrene materials and generated in highway car loading, wharf shipment, storage tank breathing and other various places can be treated at the same time, and the method has higher treatment efficiency, besides, is simple in flow, small in occupied land area and low in energy consumption, can meet the national latest environmental protection standard requirements for styrene emission limit values, effectively reduces the styrene emission and eliminates environmental risks and security risks at refinery enterprise styrene workplaces.

Description

technical field [0001] The invention relates to a method for treating styrene waste gas, which is used for treating styrene-containing waste gas generated during road loading, wharf loading and storage tank respiration of styrene materials in refining and chemical enterprises. Background technique [0002] Styrene is an important chemical monomer in plastic production and other industries, and its application range and consumption are increasing. Refining and chemical enterprises will produce a large amount of styrene-containing waste gas in the process of styrene road loading, wharf loading and tank tank breathing. The discharge of these styrene-containing waste gases has a huge impact on the ecological environment and human health. Security risks. According to the latest GB31571 "Petrochemical Industry Pollutant Discharge Standards" issued by the country, the emission limit of styrene in waste gas is 50mg / m 3 . However, at present, the effective treatment of styrene was...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/72
CPCB01D53/72B01D2251/10B01D2257/7027B01D2258/02
Inventor 宫中昊于辉佟晓慧单晓雯尹树孟牟小冬张卫华
Owner CHINA PETROLEUM & CHEM CORP
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