Activated carbon based adsorbent for adsorbing benzene-containing waste gases

A technology of activated carbon and adsorbent, applied in the direction of alkali metal oxides/hydroxides, inorganic chemistry, alkali metal compounds, etc., can solve the problems of high resistance, secondary pollution, high operating costs, etc., and achieve low adsorption resistance and high removal rate High, the effect of improving the response strength

Inactive Publication Date: 2018-10-19
ANHUI LEJIN ENVIRONMENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adsorption is a commonly used method for treating volatile organic compounds, among which activated carbon adsorption is the most widely used, but it is easy to produce secondary pollution, and the resistance is very high, resulting in high operating costs

Method used

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  • Activated carbon based adsorbent for adsorbing benzene-containing waste gases

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preparation example Construction

[0009] The present invention also provides a preparation method of the activated carbon-based adsorbent for absorbing benzene-containing waste gas, comprising the following steps:

[0010] (1) Annealing citrus fruit peel at 100-160°C for 2-24 hours in an inert gas atmosphere, then heating up to 300-700°C for a second annealing for 1-8 hours to obtain porous activated carbon;

[0011] (2) Stir and mix organic titanate, transition metal salt and urea in a solvent, then add porous activated carbon, CH 3 NH 3 I and a silane coupling agent, followed by a sealed heat reaction at 100-160°C for 2-6 hours to obtain a modified porous activated carbon;

[0012] (3) After uniformly mixing the modified porous activated carbon and polydiallyldimethylammonium chloride in the solvent, ultrasonically disperse for 1 to 3 hours to obtain a mixed system, and then add graphene oxide and reducing agent to the mixed system , continue to ultrasonically disperse for 2-6 hours, centrifuge, wash, and ...

Embodiment 1

[0020] An activated carbon-based adsorbent for absorbing waste gas containing benzene, made of the following parts by weight: 75 parts by weight of lemon peel, 16 parts by weight of tetraethyl titanate, 0.4 parts by weight of cobalt acetate, CH 3 NH 3 5 parts by weight of I, 4 parts by weight of urea, 8 parts by weight of graphene oxide, 4 parts by weight of hydrazine hydrate, 8 parts by weight of polydiallyl dimethyl ammonium chloride, 4 parts by weight of diethylenetriaminopropyltrimethoxysilane parts, 120 parts by weight of water.

[0021] The preparation method of the activated carbon-based adsorbent for absorbing benzene-containing waste gas comprises the following steps:

[0022] (1) Put lemon peel in a muffle furnace, dry at 100°C for 20 hours in an argon atmosphere, then raise the temperature to 450°C, and calcinate for 6 hours to obtain porous activated carbon;

[0023] (2) Stir and mix tetraethyl titanate, cobalt acetate and urea in water evenly, then add porous ac...

Embodiment 2

[0026] An activated carbon-based adsorbent for adsorbing waste gas containing benzene, made of the following parts by weight: 80 parts by weight of pomelo peel, 12 parts by weight of tetramethyl titanate, 0.4 parts by weight of silver nitrate, CH 3 NH 3 3.2 parts by weight of I, 6 parts by weight of urea, 5 parts by weight of graphene oxide, 5 parts by weight of sodium borohydride, 10 parts by weight of polydiallyldimethylammonium chloride, 4.5 parts by weight of ureapropyltrimethoxysilane, 100 parts by weight of water.

[0027] The preparation method of the activated carbon-based adsorbent for absorbing benzene-containing waste gas comprises the following steps:

[0028] (1) Put the pomelo peel in a muffle furnace, dry at 120°C for 12 hours in an argon atmosphere, then raise the temperature to 500°C, and calcinate for 4 hours to obtain porous activated carbon;

[0029] (2) Stir and mix tetramethyl titanate, silver nitrate and urea in water evenly, then add porous activated ...

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Abstract

The invention relates to the technical field of waste gas purification and particularly relates to an activated carbon based adsorbent for adsorbing benzene-containing waste gases. The activated carbon based adsorbent for adsorbing benzene-containing waste gases is prepared from the following substances in parts by weight: 50-100 parts of citrus plant peels, 6-24 parts of organic titanate, 0.2-1 part of transition metal salt, 2-8 parts of NH3NH3I, 1-8 parts of urea, 3-15 parts of graphene oxide, 2-5 parts of a reducing agent, 5-10 parts of poly-diallyldimethylammonium chloride, 3-5 parts of asilane coupling agent and 50-120 parts of a solvent. The activated carbon based adsorbent for adsorbing benzene-containing waste gases, provided by the invention, can achieve effects of enriching benzene in the waste gases and performing catalytic reduction on the benzene, the benzene in the waste gases can be rapidly and effectively purified, the air safety is ensured, and a healthy living environment is provided for people.

Description

technical field [0001] The invention relates to the technical field of waste gas purification, in particular to an activated carbon-based adsorbent for adsorbing benzene-containing waste gas. Background technique [0002] Air pollution is one of the most prominent environmental pollution problems in my country at present, and volatile organic compounds are an important source of air pollutants. A large amount of industrial waste gas containing volatile organic compounds is discharged into the atmosphere, resulting in a decline in the quality of the atmospheric environment and at the same time bringing harm to human health. Benzene, toluene, and xylene (that is, containing benzene) , can enter the human body through the respiratory tract and skin, and can cause temporary or permanent lesions in the human respiratory, blood, liver and other systems and organs, especially the benzonaphthyrene polycyclic aromatic hydrocarbons can directly cause cancer in the human body, which ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/86B01D53/72B01D53/02
CPCB01J20/0211B01D53/02B01D53/8668B01J20/20B01J20/223B01J20/28054
Inventor 郭常青吴学军
Owner ANHUI LEJIN ENVIRONMENT TECH CO LTD
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