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Carbon disulfide removal method based on low-temperature plasma reactor and coupling catalyst

A low-temperature plasma and low-temperature plasma technology, applied in the directions of heterogeneous catalyst chemical elements, separation methods, chemical instruments and methods, etc., can solve the problems of reduced carbon disulfide catalytic removal effect, short catalyst activity time, and poor industrial applicability, etc. To achieve the effect of no attenuation of removal effect, stable catalytic performance and long-lasting catalytic effect

Active Publication Date: 2020-11-06
SHANDONG FIRST MEDICAL UNIV & SHANDONG ACADEMY OF MEDICAL SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcoming is that its catalyst activity time is relatively short, and after about 90 to 150 minutes of catalytic action, the catalyst begins to fail, and the catalytic removal effect on carbon disulfide is significantly reduced, and it is not suitable for the current situation of long-term continuous industrial production. Poor; further, in industrial applications, the catalyst removal method used has low energy efficiency

Method used

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  • Carbon disulfide removal method based on low-temperature plasma reactor and coupling catalyst

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Effect test

Embodiment 1

[0039] A method for removing carbon disulfide based on a low-temperature plasma reactor and a coupled catalyst, comprising modified powder preparation, modified powder spraying, coupled catalyst preparation, and low-temperature plasma treatment.

[0040] The preparation of the modified powder includes: pretreatment, shearing, calcining and loading.

[0041] For the pretreatment, 30-mesh titanium dioxide powder was put into 5 times the volume of 3% zirconium nitrate solution, the stirring speed was 60 RPM, the stirring time was 20 minutes, and then stood still for 30 minutes. Then drop in 5% phosphoric acid, stir for 1h, and filter out the solid powder.

[0042]The weight ratio of titanium dioxide powder: phosphoric acid is 1:0.08.

[0043] For the shearing, high-speed shearing is performed on the solid powder at a shearing speed of 6000 RPM until the solid particle diameter D50 is 90 μm.

[0044] For the calcination, under the protection of an inert gas, the sheared solid po...

Embodiment 2

[0060] A method for removing carbon disulfide based on a low-temperature plasma reactor and a coupled catalyst, comprising modified powder preparation, modified powder spraying, coupled catalyst preparation, and low-temperature plasma treatment.

[0061] The preparation of the modified powder includes: pretreatment, shearing, calcining and loading.

[0062] For the pretreatment, 35-mesh titanium dioxide powder was put into 5 times the volume of 4% zirconium nitrate solution, the stirring speed was 100 RPM, the stirring time was 20 minutes, and then stood still for 30 minutes. Then drop in 7% phosphoric acid, stir for 1h, and filter out the solid powder.

[0063] The ratio of titanium dioxide powder: phosphoric acid in parts by weight is 1:0.11.

[0064] For the shearing, high-speed shearing is performed on the solid powder at a shearing speed of 7000 RPM until the solid particle diameter D50 is 100 μm.

[0065] For the calcination, under the protection of an inert gas, the s...

Embodiment 3

[0081] A method for removing carbon disulfide based on a low-temperature plasma reactor and a coupled catalyst, comprising modified powder preparation, modified powder spraying, coupled catalyst preparation, and low-temperature plasma treatment.

[0082] The preparation of the modified powder includes: pretreatment, shearing, calcining and loading.

[0083] For the pretreatment, 40-mesh titanium dioxide powder was put into 5 times the volume of 5% zirconium nitrate solution, the stirring speed was 120 RPM, the stirring time was 30 minutes, and then stood still for 30 minutes. Then drop in 7% phosphoric acid, stir for 1h, and filter out the solid powder.

[0084] The titanium dioxide powder: the weight ratio of phosphoric acid is 1: 0.17.

[0085] For the shearing, high-speed shearing is performed on the solid powder at a shearing speed of 7500 RPM until the solid particle diameter D50 is 120 μm.

[0086] For the calcination, under the protection of an inert gas, the sheared ...

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Abstract

The invention provides a carbon disulfide removal method based on a low-temperature plasma reactor and a coupling catalyst. The carbon disulfide removal method comprises the steps of modified powder preparation, modified powder spraying, coupling catalyst preparation and low-temperature plasma treatment. According to the invention, by adopting the carbon disulfide removal method to treat waste gas, the carbon disulfide removal rate can reach 99.5-99.8%, the energy efficiency is high, and the energy efficiency of the method is improved by 6-11 times compared with an existing low-temperature plasma carbon disulfide removal method; the catalyst has no attenuation on the carbon disulfide removal effect within 200-350 h, and is lasting in catalytic effect and stable in catalytic performance; the dosage of the catalyst required for treating unit volume of waste gas is reduced by 9-14%; carbon disulfide waste gas can be completely decomposed into CO2, H2O, N2 and other pollution-free substances, so that up-to-standard emission can be achieved; and the method has the advantages of being low in energy consumption, large in waste gas treatment amount and free of by-products and is suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to the field of carbon disulfide, in particular to a method for removing carbon disulfide based on a low-temperature plasma reactor and a coupled catalyst. Background technique [0002] Carbon disulfide, a common solvent, is a colorless liquid. The pure carbon disulfide used in the laboratory has an aromatic sweetness similar to chloroform, but usually the impure industrial product turns yellowish due to mixing with other sulfides (such as carbonyl sulfide, etc.), and has unpleasant rotten radish taste. It can dissolve elemental sulfur. Carbon disulfide is used in the manufacture of rayon, pesticides, accelerators, etc., and is also used as a solvent. [0003] Carbon disulfide can invade the human body through the respiratory tract, skin, and digestive tract. It is a poison to the nervous system, which can inhibit the activity of enzymes, affect lipoprotein metabolism, and cause cardiovascular diseases. Long-term exposure to l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/32B01D53/86B01D53/48B01J23/889
CPCB01D53/32B01D53/8606B01J23/8892B01J23/002B01D2259/818B01J2523/00B01J2523/31B01J2523/47B01J2523/72B01J2523/842B01J2523/847
Inventor 杨荣华张秀玲杨明晖娄建超郭祥荣刘梅郭学阳
Owner SHANDONG FIRST MEDICAL UNIV & SHANDONG ACADEMY OF MEDICAL SCI
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