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Catalyst for producing calcium oxide from calcium sulfate and preparation process thereof

A technology of calcium oxide and calcium sulfate, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, calcium/strontium/barium oxide/hydroxide, etc., can solve the problem of low catalytic efficiency, High cost and other issues, to achieve high activity, reduce emissions, and speed up the effect of reaction

Active Publication Date: 2015-09-02
XIANGFU NEW BUILDING MATERIAL HUNAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalytic efficiency of existing catalysts is low and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The catalyst for producing calcium oxide from calcium sulfate of the present embodiment is made of the following raw materials in parts by weight: 50 parts of alumina, 20 parts of silicon dioxide, 15 parts of activated carbon, and 15 parts of calcium oxide.

[0025] The aluminum oxide (Al 2 o 3 ) for γ-Al 2 o 3 ;

[0026] The silicon dioxide (SiO 2 ) is nano silicon dioxide;

[0027] The activated carbon is mineral raw material activated carbon with a pore diameter of ≥20000nm.

[0028] Calcium sulfate of the present embodiment produces the preparation technology of the catalyst of calcium oxide, comprises the following steps:

[0029] Add 50 parts of alumina, 20 parts of silicon dioxide, 15 parts of activated carbon, and 15 parts of calcium oxide into the high mixer, mix for 10 minutes, and then add the mixture in the high mixer to the inclined turntable with adjustable speed. The temperature is 80r / min, the inclination is 30 degrees, and water is sprayed at the...

Embodiment 2

[0031] The calcium sulfate of the present embodiment produces the catalyst of calcium oxide, is made of the raw material of following parts by weight: aluminum oxide 55 parts, silicon dioxide 15 parts, gac 15 parts, calcium oxide 15 parts.

[0032] The aluminum oxide (Al 2 o 3 ) for γ-Al 2 o 3 ;

[0033] The silicon dioxide (SiO 2 ) is nano silicon dioxide;

[0034] The activated carbon is mineral raw material activated carbon with a pore diameter of ≥20000nm.

[0035] Calcium sulfate of the present embodiment produces the preparation technology of the catalyst of calcium oxide, comprises the following steps:

[0036] Add 55 parts of alumina, 15 parts of silicon dioxide, 15 parts of activated carbon, and 15 parts of calcium oxide into the high mixer, mix for 15 minutes, and then add the mixture in the high mixer to the inclined turntable that can adjust the speed, the speed of the turntable The temperature is 80r / min, the inclination is 30 degrees, and water is sprayed ...

Embodiment 3

[0038] The calcium sulfate of the present embodiment produces the catalyst of calcium oxide, is made of the raw material of following parts by weight: 60 parts of aluminum oxides, 10 parts of silicon dioxide, 15 parts of gacs, 15 parts of calcium oxides.

[0039] The aluminum oxide (Al 2 o 3 ) for γ-Al 2 o 3 ;

[0040] The silicon dioxide (SiO 2 ) is nano silicon dioxide;

[0041] The activated carbon is mineral raw material activated carbon with a pore size ≥ 20000nm;

[0042] Calcium sulfate of the present embodiment produces the preparation technology of the catalyst of calcium oxide, comprises the following steps:

[0043] Add 60 parts of alumina, 10 parts of silicon dioxide, 15 parts of activated carbon, and 15 parts of calcium oxide into the high mixer, mix for 8 minutes, and then add the mixture in the high mixer to the inclined turntable that can adjust the speed, the speed of the turntable The temperature is 75r / min, the inclination is 30 degrees, and water is ...

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Abstract

The invention relates to a catalyst for producing calcium oxide from calcium sulfate and a preparation process thereof. The catalyst is prepared from the following raw materials in parts by weight: 50-60 parts of aluminum oxide, 10-20 parts of silicon dioxide, 10-20 parts of activated carbon and 10-20 parts of adhesive calcium oxide. The invention also comprises the preparation process of the catalyst for producing calcium oxide from calcium sulfate. The catalyst prepared by the invention is high in activity; and when calcium oxide is produced from calcium sulfate under the catalytic action of the catalyst, the reaction speed can be accelerated, and the activated carbon also can adsorb harmful gas to reduce the discharge thereof.

Description

technical field [0001] The invention relates to a catalyst and a preparation process thereof, in particular to a high-efficiency catalyst for producing calcium oxide from calcium sulfate and a preparation process thereof. Background technique [0002] At present, the production of calcium oxide is mainly produced by calcium sulfate under reducing heating conditions, and its processing temperature is above 1000 ° C. During this process, a large amount of CO gas will be generated. Enterprises need to process or apply this part of CO gas. All these are It has greatly increased the production cost of calcium sulfate to produce calcium oxide, and also restricted the development of the calcium oxide production industry. How to increase the productivity of calcium oxide and reduce the cost of catalysts by adding catalysts has become the focus of industry development. However, the existing catalysts have low catalytic efficiency and high cost. Contents of the invention [0003] T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/02C01F11/04
Inventor 刘立文刘珍如宁爱民宁勇宁江天刘勇鲁纪鸣
Owner XIANGFU NEW BUILDING MATERIAL HUNAN