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An activated carbon modification method that can effectively remove trace acid gases in the air

A technology of acid gas and activated carbon, applied in the field of ambient air purification, to achieve strong operability, few steps, and good removal effect

Active Publication Date: 2015-10-21
SHANGHAI JOKOSON ENVIRONMENT ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the shortcomings and deficiencies of the current technology, the present invention aims to solve the problem of controlling the concentration of low-concentration acid gases in the air in various industries, and invents an activated carbon modification method that can effectively remove trace amounts of acid gases in the air

Method used

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  • An activated carbon modification method that can effectively remove trace acid gases in the air
  • An activated carbon modification method that can effectively remove trace acid gases in the air

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Take 100g of activated carbon particles, put them in the reaction container, pass through the ethanol vapor at 160~180℃, the reaction time is 2~3h, and activate the activated carbon for the second time; then put the activated carbon after preliminary treatment into the Schlenk flask Add 500ml of pure ethanol solution, and pass nitrogen gas for 10~15min, and stir at the same time, so that no air remains in the flask; add 20g of 3-aminopropyltriethoxysilane (APTES) solution into the flask, and stir for 15h ; The treated activated carbon is separated by vacuum filtration, washed with deionized water and air-dried naturally, and the activated carbon after the treatment is packaged for use.

[0021] Take the prepared activated carbon 1, pass it into air, and carry out a static adsorption test to test its purification effect. The main consideration is the absorption of sulfur dioxide and nitrogen dioxide in the air by activated carbon. The size of the adsorption column is ?3...

Embodiment 2

[0023] Take 100g of activated carbon particles, put them in the reaction container, pass through the ethanol vapor at 160~180℃, the reaction time is 2~3h, and activate the activated carbon for the second time; then put the activated carbon after preliminary treatment into the Schlenk flask Add 500ml of pure ethanol solution, and feed nitrogen gas for 10~15min, and stir at the same time, so that no air remains in the flask; add 40g of APTES solution into the flask, stir for 15h; separate the treated activated carbon by vacuum filtration, and use Wash with deionized water and air-dry naturally, and the activated carbon after the treatment is packaged for use.

[0024] Take the prepared activated carbon 2, pass it into the air, and carry out a static adsorption test to test its purification effect. The main consideration is the absorption of sulfur dioxide and nitrogen dioxide in the air by activated carbon. The size of the adsorption column is ?35mm×150mm, the superficial gas v...

Embodiment 3

[0026] Take 100g of activated carbon particles, put them in the reaction container, pass through the ethanol vapor at 160~180℃, the reaction time is 2~3h, and activate the activated carbon for the second time; then put the activated carbon after preliminary treatment into the Schlenk flask Add 500ml of pure ethanol solution, and feed nitrogen gas for 10~15min, while stirring, so that there is no residual air in the flask; add 60g of APTES solution into the flask, stir for 15h; separate the treated activated carbon by vacuum filtration, and use Wash with deionized water and air-dry naturally, and the activated carbon after the treatment is packaged for use.

[0027] Take the prepared activated carbon 3, pass it into the air, and carry out a static adsorption test to test its purification effect. The main consideration is the absorption of sulfur dioxide and nitrogen oxides in the air by activated carbon. The size of the adsorption column is ?35mm×150mm, the superficial gas vel...

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Abstract

The invention relates to an activated carbon modification method capable of effectively removing trace acidic gas from air. Activated carbon is chemically treated through multiple steps; a preparation method for a material comprises the steps of placing the activated carbon to be modified into a reaction container, and feeding pure ethanol steam; adding the activated carbon subjected to initial treatment into the reaction container with a pure ethanol solution, feeding nitrogen, and stirring to completely remove air from the reaction container; adding a 3-aminopropyltriethoxysilane (APTES) solution into the reaction container, and stirring; and performing vacuum filtration to separate the treated activated carbon, washing the activated carbon through deionized water, performing natural air-drying, and encapsulating the treated activated carbon for later use. The activated carbon modification process is simple; the steps are few; the activated carbon prepared by the method can effectively remove the acidic gas such as sulfur dioxide with extremely low concentration.

Description

technical field [0001] The invention belongs to the field of ambient air purification. In particular, it relates to an activated carbon modification preparation method capable of effectively removing trace acid gases in the air. Background technique [0002] With the development of economy and society, environmental protection, labor protection, etc. have put forward higher requirements for air environment quality, and industrial production technology, special industries, etc. have also put forward higher requirements for the quality of the gas in which they are located. The existence of trace amounts of acid gas in the air often causes harm to the production and operation of some industries. For example, the communication machine room is a special type of workplace. Due to the special technical requirements of hardware equipment, the machine room is kept in a closed state for a long time, and it mainly relies on air conditioning and ventilation equipment to deliver fresh a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/02
Inventor 徐斌吴娅
Owner SHANGHAI JOKOSON ENVIRONMENT ENG
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