Manganese oxide coated activated carbon catalyst and preparation method and application thereof

A manganese dioxide and activated carbon technology, applied in the field of ozone catalyst and ozone oxidation water treatment, can solve the problems of increased water treatment cost, high operating cost, difficult recovery, etc., and achieves improved ozone oxidation capacity and reaction efficiency, high load rate, Evenly dispersed effect

Inactive Publication Date: 2017-06-09
GUANGZHOU HUALYU ENVIRONMENTAL PROTECTION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But its disadvantage is that the catalyst is miscible in water, which makes it easy to lose, difficult to re

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of activated carbon carrier core: get part of activated carbon powder (accounting for 2 / 5 of the total weight of activated carbon powder), add pitch (1% of raw material core quality is 1% of the total amount of part activated carbon powder+binding agent+pore-forming agent ) and the pore-forming agent polyethylene glycol (0.8% of the mass of the raw material core) are mixed, and the raw material core with a particle diameter of 2-3mm is prepared in a sugar coating preparation machine, and then roasted under the condition of nitrogen protection (800 ° C roasting 6h ), form activated carbon carrier core after cooling;

[0033] (2) after mixing potassium permanganate solid particles, 36wt% manganese sulfate aqueous solution and remaining gac powder, join in the gac carrier core in step (1), and prepare particle diameter by sugar coating preparation machine and be 3- The active carbon particle that contains catalytically active component of 5mm; The consumpti...

Embodiment 2

[0037](1) Preparation of activated carbon carrier core: get part of activated carbon powder (accounting for 2 / 5 of the total weight of activated carbon powder), add coal tar (1.5% of the raw material core quality is 1.5% of the total amount of part activated carbon powder+binding agent+pore-forming agent) %) and the pore-forming agent polyethylene glycol (2.5% of the mass of the raw material core), prepare a raw material core with a particle diameter of about 4mm in a sugar coating preparation machine, and then roast it under the condition of nitrogen protection (600 ° C roasting 6h ), form activated carbon carrier core after cooling;

[0038] (2) After mixing potassium permanganate solid particles, 36wt% manganese sulfate aqueous solution and the remaining activated carbon powder, join in the activated carbon carrier core in step (1), and prepare a particle size of 5-5 through a sugar coating preparation machine The active carbon particle that contains catalytically active co...

Embodiment 3

[0042] (1) Preparation of activated carbon carrier core: get part of activated carbon powder (accounting for 3 / 5 of the total weight of activated carbon powder), add coal tar (2.8% of the raw material core quality is 2.8% of the total amount of part activated carbon powder+binding agent+pore-forming agent) %) and pore-forming agent starch (3.1% of the mass of the raw material core), prepare a raw material core with a particle size of 2 to 2.5 mm in a sugar coating preparation machine, and then roast it under the condition of nitrogen protection (600 ° C for 4 hours) , form activated carbon carrier core after cooling;

[0043] (2) After mixing potassium permanganate solid particles, 36wt% manganese sulfate aqueous solution and the remaining activated carbon powder, join in the activated carbon carrier core in step (1), and prepare a particle diameter of 3 ~ 3 by sugar coating preparation machine The active carbon particle that contains catalytically active component of 5mm; The...

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Abstract

The invention belongs to the technical field of ozone catalysts, and discloses a manganese oxide coated activated carbon catalyst and a preparation method and application thereof. The method comprises the following steps: (1) uniformly mixing some activated carbon powder, an adhesive and a pore-forming agent; preparing a raw material core through a sugar-coating preparation machine; roasting the raw material core under the inert gas protection; and cooling to obtain an activated carbon carrier core; (2) uniformly mixing potassium permanganate solid particles, a manganese sulfate aqueous solution and the rest activated carbon powder; then transferring into the activated carbon carrier core; and preparing activated carbon particles through the sugar-coating preparation machine; and (3) sintering the activated carbon particles under nitrogen or carbon dioxide atmosphere to obtain the manganese oxide coated activated carbon ozone catalyst. According to the catalyst, the catalyzing active components are high in coating rate and uniform to disperse; the ozone oxidation performance and the reaction efficiency can be increased; organic matters which are hardly degraded in wastewater can be efficiently removed; meanwhile, the method is simple and applicable to ozone oxidation sewage treatment.

Description

technical field [0001] The invention belongs to the technical field of ozone catalysts, and relates to an agricultural waste straw activated carbon catalyst containing manganese dioxide active components and a preparation method thereof. The catalyst is applied in the technical field of ozone oxidation water treatment. Background technique [0002] China is the "world factory", many products are exported overseas, and the manufacturing industry is huge and developing rapidly. With the development of urbanization and industrialization, the problem of refractory biodegradable wastewater such as industrial sewage and municipal landfill leachate has received widespread attention. Ozone has a strong oxidizing ability. In 1783, M. Van Mullen discovered ozone; in 1886, M. Meritan of France discovered that ozone has the ability to sterilize; in 1891, Siemens and Halsk in Germany used the principle of discharge to make an ozone generator. In 1908, a test device for disinfecting tap ...

Claims

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Application Information

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IPC IPC(8): B01J23/34C02F1/72C02F1/78
CPCB01J23/34C02F1/725C02F1/78C02F2101/30
Inventor 顾晓扬简磊汪晓军姜元臻戴雨薇郭训文郑垒李炳辉郑静宜
Owner GUANGZHOU HUALYU ENVIRONMENTAL PROTECTION SCI & TECH CO LTD
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