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Preparation method and application of catalyst based on sludge-biomass mixed carbon

A biomass and catalyst technology, which is applied in the field of sludge-biomass mixed carbon catalyst preparation, can solve problems such as limitations, and achieve the effects of low cost, high catalytic activity, and convenient operation

Inactive Publication Date: 2021-08-06
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the possible presence of heavy metal residues in sludge-biomass charcoal, its application in soil improvement, adsorption and other aspects is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Mix the sludge and rice husk in a ratio of 1.2:1, weigh 100 grams of the sludge-rice husk mixture, and decompose it at 600°C for 8 hours under a nitrogen atmosphere to obtain sludge-rice husk char; -Rice husk charcoal is impregnated in a mixed solution containing copper chloride, sodium bisulfate and 1-propyl-3-methylimidazolium chloride; The loads of -propyl-3-methylimidazolium chloride salt were 20%, 1% and 10% respectively; the impregnated sludge-rice husk charcoal was dried at 60°C under vacuum; the powdered The catalyst is used in the gas-phase catalytic oxidation of benzyl alcohol in a fixed bed.

Embodiment 2

[0032] Mix the sludge and straw at a ratio of 1.1:1, weigh 100 grams of the sludge-straw mixture, and decompose it at 500°C for 6 hours under nitrogen atmosphere to obtain sludge-rice straw charcoal; Immersed in a mixed solution containing ferrous sulfate, zinc sulfate and 1-ethyl-3-methylimidazolium bromide; relative to sludge-rice straw, ferrous sulfate, zinc sulfate and 1-ethyl-3-formazol The loads of imidazolium bromide salt were 15%, 10% and 5% respectively; the impregnated sludge-rice straw was dried at 80°C under normal pressure; the above powder catalyst was applied to fixed bed carbon monoxide hydrogenation Reacting.

Embodiment 3

[0034]Mix the sludge and corn stalks at a ratio of 1.05:1, weigh 100 grams of the sludge-stalk mixture, and decompose it at 550°C for 5.5 hours under a nitrogen atmosphere to obtain sludge-straw char; The charcoal was impregnated in a mixed solution containing copper nitrate, zinc nitrate and 1-ethyl-3-methylimidazole acetate; The loads of imidazole acetate were 15%, 10% and 5% respectively; the impregnated sludge-straw charcoal was dried at 80°C under normal pressure; Hydrogen chloride reaction.

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PUM

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Abstract

The invention discloses a preparation method and application of a catalyst based on sludge-biomass mixed carbon, and relates to a preparation method and application of a catalyst. The preparation method comprises the following steps: mixing sludge and biomass according to a certain proportion, and carrying out thermal decomposition at 10-1000 DEG C in different atmospheres to prepare the sludge-biomass mixed carbon; and soaking the sludge-biomass mixed carbon in a mixed solution of an inorganic salt solution and an ionic liquid at the temperature of 10-100 DEG C for 0.1-24 h, drying the soaked sludge-biomass mixed carbon for 0.1-48 h at the temperature of-100 DEG C to 200 DEG C, and obtaining the catalyst based on the sludge-biomass mixed carbon. The obtained catalyst contains a plurality of metal elements, and is high in catalytic activity, good in stability, simple to prepare and convenient to operate.

Description

technical field [0001] The invention relates to a preparation method and application of a catalyst, in particular to a preparation method and application of a sludge-biomass mixed carbon catalyst. Background technique [0002] my country's daily output of municipal sludge with a moisture content of 80% exceeds 34 million tons, which contains pathogenic microorganisms, polychlorinated biphenyls and other organic pollutants, as well as N, P, K and various metal elements, and has the potential to be used as a chemical catalyst. [0003] Sludge pyrolysis is potentially the best treatment method, but the high water content makes direct pyrolysis very difficult. Adding biomass such as straw, rice husk, corn cob, reed, fruit shell, sawdust, straw, etc. into the sludge in a certain proportion and then performing pyrolysis can make the sludge pyrolysis process easy to operate, so sludge-biological Combustion of substances is one of the important development directions of sludge trea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02C07C21/06C07C17/08
CPCB01J31/0281C07C17/08C07C21/06
Inventor 张丽嵇志冲沈永峻张婧雅张莹王金雨张津齐
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY