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Modifying method for sepiolite

A technology of sepiolite and sepiolite powder, which is applied in the field of modified sepiolite to treat low-concentration organic waste gas and the modification of sepiolite, which can solve the problems of fuel consumption, difficult regeneration, and large footprint, and achieve recovery Effects of adsorption capacity, modification and reuse, and excellent catalytic activity

Active Publication Date: 2017-02-01
DONGGUAN VILLO ENVIRONMENTAL PROTECTION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the combustion method and the catalytic combustion method are expensive in equipment investment, easy to corrode, consume fuel, and have high processing costs, and the low-concentration organic waste gas needs to be concentrated and enriched in advance; the liquid-phase absorption method produces secondary pollution, and the washing liquid needs to be treated. , the purification efficiency is low; the adsorption method adsorbent is expensive and difficult to regenerate; the biological method occupies a large area, the operation is complicated and nutrients need to be added

Method used

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  • Modifying method for sepiolite
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  • Modifying method for sepiolite

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Experimental program
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Effect test

Embodiment 1

[0025] A method for modifying sepiolite, including acid modification treatment of sepiolite, chemical reaction of acid-modified sepiolite, hydroxypropyl methylcellulose and sodium silicate, and channel site of modified sepiolite For the physical adsorption and chemical adsorption reactions of potassium permanganate, the acid is hydrochloric acid or nitric acid.

[0026] Immerse the sepiolite in deionized water for 26 hours, take it out, dry it at 60°C, add a hydrochloric acid solution with a concentration of 5mol / L, acid treatment time is 15 hours, the mass volume ratio of sepiolite to acid is 1:3g / ml, acid-modified sepiolite is obtained after this process.

[0027] Immerse the acid-modified sepiolite in deionized water, add hydroxypropyl methylcellulose and sodium silicate, control the water temperature and heat to 100°C, and the reaction time is 6 hours to prepare the semi-modified sepiolite.

[0028] The mass ratio of acid-modified sepiolite to hydroxypropyl methylcellulo...

Embodiment 2

[0032] A method for modifying sepiolite, including acid modification treatment of sepiolite, chemical reaction of acid-modified sepiolite, hydroxypropyl methylcellulose and sodium silicate, and channel site of modified sepiolite For the physical adsorption and chemical adsorption reactions of potassium permanganate, the acid is hydrochloric acid or nitric acid.

[0033] Immerse the sepiolite in deionized water for 36 hours, take it out, dry it at 60-80°C, add a nitric acid solution with a concentration of 6mol / L, and treat the acid for 18 hours. The mass-volume ratio of sepiolite to acid is 1 : Between 4g / ml, acid-modified sepiolite is obtained after this process.

[0034] Immerse the acid-modified sepiolite in deionized water, add hydroxypropyl methylcellulose and sodium silicate, control the water temperature and heat it to 100-120°C, and the reaction time is 8 hours to prepare semi-modified sepiolite .

[0035] The mass ratio of acid-modified sepiolite to hydroxypropyl me...

Embodiment 3

[0039] A method for modifying sepiolite, including acid modification treatment of sepiolite, chemical reaction of acid-modified sepiolite, hydroxypropyl methylcellulose and sodium silicate, and channel site of modified sepiolite For the physical adsorption and chemical adsorption reactions of potassium permanganate, the acid is hydrochloric acid or nitric acid.

[0040] Immerse the sepiolite in deionized water for 64 hours, take it out, dry it at 60~80°C, add a hydrochloric acid solution with a concentration of 6mol / L, acid treatment time is 20 hours, the mass volume ratio of sepiolite to acid is 1 : Between 5g / ml, acid-modified sepiolite is obtained after this process.

[0041] Immerse the acid-modified sepiolite in deionized water, add hydroxypropyl methylcellulose and sodium silicate, control the water temperature and heat it to 100-120°C, and the reaction time is 8 hours to prepare semi-modified sepiolite .

[0042] The mass ratio of acid-modified sepiolite to hydroxypro...

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Abstract

The invention provides a modifying method for sepiolite. The modifying method includes the steps that 1, acid modification treatment is carried out on sepiolite; 2, the acid-modified sepiolite reacts with hydroxypropyl methyl cellulose and sodium silicate to prepare semi-modified sepiolite; 3, pore passage point locations of the semi-modified sepiolite carry out physical absorption and chemical absorption reaction on potassium permanganate, and then modified sepiolite is obtained, wherein acid is hydrochloric acid or nitric acid. The sepiolite is adopted for reacting with hydrochloric acid, nitric acid, hydroxypropyl methyl cellulose and sodium silicate, waste gas is treated under the catalytic action of manganese dioxide instead of being absorbed simply, organisms in the waste gas are decomposed under the catalytic action of manganese dioxide, and the modified sepiolite can be repeatedly utilized.

Description

technical field [0001] The invention relates to the field of material preparation and low-concentration organic waste gas treatment and environmental protection, in particular to a method for modifying sepiolite and a method for treating low-concentration organic waste gas with modified sepiolite. Background technique [0002] Sepiolite is a fibrous magnesium-rich clay mineral. Its unique layered structure and huge specific surface make it have the characteristics of strong adsorption and large ion exchange capacity, and has the advantages of small secondary pollution and reusable Therefore, in recent years, the modification of sepiolite and the application of sepiolite in pollution control have become a major research focus in the field of environmental protection. [0003] Sepiolite is currently not widely used in the field of organic waste gas treatment, and most of the applications only use sepiolite as an adsorption carrier, while ignoring the excellent performance of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30B01D53/86B01D53/72
CPCB01D53/02B01D53/8668B01D2253/11B01D2255/2073B01D2255/802B01J20/12B01J2220/4806
Inventor 林卫波萧子东
Owner DONGGUAN VILLO ENVIRONMENTAL PROTECTION INC