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Styrene waste 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 that do not involve the use effect of activated carbon fibers, and achieve the effect of safe adsorption, strong adsorption force, and improved recovery rate

Active Publication Date: 2020-02-07
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent does not involve the use effect of the activated carbon fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Use a commercially available activated carbon fiber of T1300 series, put it in a container, use butanol as a solvent, make TMPOP and phosphoric acid or phosphate into an activation solution, stir it evenly, add it to a glass container, the activation solution should be submerged The carbon fiber is about 1 cm, the immersion temperature is 60℃, and the immersion time is 12h. Take it out and filter, dry it, and then dry it in an oven at 92℃ for constant weight; then place it in a muffle furnace in a nitrogen environment Medium heating, heating temperature 140℃, heating time 60 minutes, to obtain modified activated carbon fiber;

[0029] 2) Load the modified activated carbon fiber into the adsorber of the adsorption device; the adsorption device includes 3 adsorbers, which always maintain one adsorption, one dry, and one adsorption saturated state switching operation; the gas containing styrene first enters the adsorption state The styrene is adsorbed on the surface of the...

Embodiment 2

[0032] 1) Use a commercially available activated carbon fiber of T1300 series, put it in a container, use butanol as a solvent, make TMPOP and phosphoric acid or phosphate into an activation solution, stir it evenly, add it to a glass container, the activation solution should be submerged The carbon fiber is about 1 cm, the immersion temperature is 40℃, and the immersion time is 18h. Take it out and filter, dry it, and then dry it in an oven at 93℃ for constant weight; then place it in a muffle furnace in a nitrogen environment Medium heating, heating temperature 125℃, heating time 75 minutes, to obtain modified activated carbon fiber;

[0033] 2) Load the modified activated carbon fiber into the adsorber of the adsorption device; the adsorption device includes 3 adsorbers, which always maintain one adsorption, one dry, and one adsorption saturated state switching operation; the gas containing styrene first enters the adsorption state The styrene is adsorbed on the surface of the...

Embodiment 3

[0036] 1) Use a commercially available activated carbon fiber of T1300 series, put it in a container, use butanol as a solvent, make TMPOP and phosphoric acid or phosphate into an activation solution, stir it evenly, add it to a glass container, the activation solution should be submerged The carbon fiber is about 1 cm, the immersion temperature is 65℃, and the immersion time is 20h. Take it out and filter, dry it, and then dry it in an oven at 92℃ for constant weight; then place it in a muffle furnace in a nitrogen environment Medium heating, heating temperature 160℃, heating time 35 minutes, to obtain modified activated carbon fiber;

[0037] 2) Load the modified activated carbon fiber into the adsorber of the adsorption device; the adsorption device includes 3 adsorbers, which always maintain one adsorption, one dry, and one adsorption saturated state switching operation; the gas containing styrene first enters the adsorption state The styrene is adsorbed on the surface of the...

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Abstract

The invention discloses a styrene waste gas treatment method, and belongs to the technical field of treatment of organic pollutants in waste gas. The styrene waste gas treatment method is characterized by comprising the following treatment steps: dipping carbon fibers in a butanol solution containing TMPOP and phosphoric acid or phosphate, and conducting heating and activating to obtain modified activated carbon fibers; loading the modified activated carbon fibers into an adsorber of an adsorption device; enabling tail gas obtained after adsorption of styrene-containing gas to flow out of a bed layer, and conducting desorption on the adsorber after adsorption; condensing and separating organic mixed steam generated by desorption; adding a polymerization inhibitor into separated styrene, and enabling styrene to flow out to be recycled. According to the styrene waste gas treatment method, polymerization of styrene in the desorption process is inhibited, the desorption efficiency is high,and the service life of the activated carbon fibers is long.

Description

Technical field [0001] A styrene waste gas treatment method belongs to the technical field of treatment of organic pollutants in waste gas. Background technique [0002] Styrene monomer has active chemical properties and is an important polymerized monomer. It can polymerize by itself or with other monomers, and is widely used in the synthesis of polymer materials, coatings, medicine and other fields. Styrene can undergo a slow thermally activated polymerization reaction at ambient temperature. In waste gas treatment, styrene belongs to volatile organic compounds and malodorous gases. Volatile organic compounds (VOCs for short) are a large category of organic waste gas, which usually refers to organic compounds with a saturated vapor pressure greater than 70 Pa at normal temperature and a boiling point less than 260°C at normal pressure. Mainly include hydrocarbons, benzene and its derivatives, phenol and its derivatives, alcohols, aldehydes and ketones. Styrene is a typical s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/02B01D53/26B01J20/20B01J20/30B01J20/34B01D53/00
CPCB01D53/02B01D53/26B01J20/20B01J20/3416B01D53/002B01D2257/7027B01D2253/102
Inventor 菅秀君马瑞杰贾庆龙朱相春王申军
Owner CHINA PETROLEUM & CHEM CORP