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Modified activated carbon, modifying method and application of modified activated carbon

A technology of activated carbon and activated carbon column, applied in the field of chemical engineering, can solve environmental pollution and other problems, achieve the effect of solving environmental pollution problems and increasing adsorption capacity

Inactive Publication Date: 2017-02-22
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problem that the existing modified activated carbon cannot absorb high-concentration hydrogen sulfide, the present invention provides a modified activated carbon, a modification method and its application. The modified activated carbon is modified with a small amount of copper salt, which significantly improves the ability of activated carbon to absorb hydrogen sulfide. The adsorption capacity; not only to solve the adsorption capacity of activated carbon for hydrogen sulfide, but also to use it for a large amount of industrial waste gas discharge, to solve the problem of environmental pollution

Method used

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Embodiment 1

[0028] (1) Activated carbon modification treatment: Take 2 g of activated carbon with a particle size of 0.5-1.0 mm, dry it at 105 ° C to constant weight, and completely immerse it in saturated copper sulfate solution for modification after cooling to room temperature. The modification time is 1 h. After impregnation, dry again at 105°C to constant weight.

[0029] (2) Water-carrying treatment of modified activated carbon: take 2 g of modified activated carbon, and perform steam atomization treatment on it, so that the water-carrying rate of activated carbon is 7%.

[0030] (3) Preparation of modified activated carbon column: Fill the water-carrying modified activated carbon into a glass tube with a length of 20 cm and a diameter of 6 mm*9 mm to prepare a modified activated carbon column, and plug both ends of the column with absorbent cotton.

[0031] (4) Desulfurization by modified activated carbon: desulfurize the biogas containing hydrogen sulfide concentration of 500-750p...

Embodiment 2

[0035] (1) Activated carbon modification treatment: Take 2 g of activated carbon with a particle size of 0.5-1.0 mm, dry it at 105 ° C to constant weight, and completely immerse it in saturated copper sulfate solution for modification after cooling to room temperature. The modification time is 2 hours. After impregnation, dry again at 105°C to constant weight.

[0036] (2) Water-carrying treatment of modified activated carbon: take 2 g of modified activated carbon, and perform steam atomization treatment on it, so that the water-carrying rate of activated carbon is 10%.

[0037] (3) Preparation of modified activated carbon column: Fill the water-carrying modified activated carbon into a glass tube with a length of 20 cm and a diameter of 6 mm*9 mm to prepare a modified activated carbon column, and plug both ends of the column with absorbent cotton.

[0038] (4) Desulfurization by modified activated carbon: desulfurize the biogas containing hydrogen sulfide concentration of 500...

Embodiment 3

[0041] (1) Activated carbon modification treatment: Take 2 g of activated carbon with a particle size of 0.5-1.0 mm, dry it at 105 ° C to constant weight, and completely immerse it in saturated copper sulfate solution for modification after cooling to room temperature. The modification time is 3 hours. After impregnation, dry again at 105°C to constant weight.

[0042] (2) Water-carrying treatment of modified activated carbon: take 2 g of modified activated carbon, and perform steam atomization treatment on it, so that the water-carrying rate of activated carbon is 15%.

[0043] (3) Preparation of modified activated carbon column: Fill the water-carrying modified activated carbon into a glass tube with a length of 20 cm and a diameter of 6 mm*9 mm to prepare a modified activated carbon column, and plug both ends of the column with absorbent cotton.

[0044] (4) Desulfurization by modified activated carbon: Desulfurize the biogas containing hydrogen sulfide concentration of 500...

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Abstract

The invention provides modified activated carbon, a modifying method and application of the modified activated carbon, and belongs to the technical field of chemical engineering. A method for removing high-concentration hydrogen sulfide in biogas by means of the modified activated carbon comprises the steps that 2 g of dried activated carbon with the particle size of 0.5 mm to 1.0 mm is taken to be immersed into a saturated copper sulfate solution to be modified for 2 h to 6 h; 2 g of the modified activated carbon is taken to be subjected to vapor atomization treatment, wherein the water-bearing rate ranges from 7% to 15%; a modified activated carbon glass column is prepared, and the two ends of the column are blocked with degreased cotton; the biogas with the hydrogen sulfide concentration of 500 ppm passes through the modified activated carbon column at the speed of 50 mL / min to 150 mL / min till the hydrogen sulfide concentration in tail gas reaches 10 ppm, and then desulfuration is stopped. According to the method for removing high-concentration hydrogen sulfide in the biogas by means of the modified activated carbon, operation is easy, safety and high efficiency are achieved, and hydrogen sulfide in the biogas can be efficiently removed.

Description

technical field [0001] The invention belongs to the technical field of chemical engineering, and relates to a modified activated carbon, a modification method and an application thereof. Background technique [0002] Activated carbon is a kind of highly adsorbable granular substance with porous and high specific surface area, which has a strong adsorption effect on gas molecular substances and small molecular substances in liquid solution; during the gas adsorption process of activated carbon, gas molecules can pass through The microporous structure of activated carbon, some gas molecules are attached to the active site of activated carbon and stay on the active site; the active site of activated carbon will lose its adsorption capacity after being occupied by gas molecules; the binding ability of each gas molecule to the active site of activated carbon Different, according to the different molecular binding ability, the separation of mixed gas by activated carbon can be rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/02
CPCB01J20/20B01D53/02B01D2257/304B01J20/0281
Inventor 张存胜苏海佳王振斌王恩彪
Owner JIANGSU UNIV
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