Semi-dry process flue gas desulfurized ash modification treatment method

A treatment method and desulfurization ash technology, applied in the direction of calcium/strontium/barium sulfate, calcium/strontium/barium oxide/hydroxide, etc., to achieve the effects of accelerating oxidation, saving time, and good catalysis

Active Publication Date: 2016-08-03
株洲醴陵旗滨玻璃有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to propose a new flue gas desulfurization ash modification treatment method for the existing glass industry, the flue gas desulfurization ash modification treatment after adopting the CFB desulfurization process technology. The modification treatment method can n

Method used

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Embodiment 1

[0034] A semi-dry flue gas desulfurization ash modification treatment method, using MnO 2 The flue gas desulfurization ash is modified together with water and oxidants, so that the flue gas desulfurization ash is continuously oxidized during the modification process, wherein the calcium oxide in the flue gas desulfurization ash is converted into calcium hydroxide, and calcium sulfite is converted into sulfuric acid Calcium, so as to obtain modified desulfurization ash. The whole process flow of the modified desulfurization ash is:

[0035] 1. Weigh the desulfurization ash, and crush the desulfurization ash into powder, generally 200-300 mesh;

[0036] 2. Put the desulfurization ash into a closed container;

[0037] 3. Select MnO according to the weight of desulfurization ash 2， and MnO 2 Crushed into powder, the particle size is the same as that of desulfurization ash;

[0038] 4. MnO 2 The powder and water are mixed according to the weight ratio of 1:45, and turned into...

Embodiment 2

[0044] A semi-dry flue gas desulfurization ash modification treatment method, the flue gas desulfurization ash obtained after using the CFB desulfurization process technology in the glass production process, using MnO 2 The flue gas desulfurization ash is modified together with water and oxidants, so that the flue gas desulfurization ash is continuously oxidized during the modification process, wherein the calcium oxide in the flue gas desulfurization ash is converted into calcium hydroxide, and calcium sulfite is converted into sulfuric acid Calcium, so as to obtain modified desulfurization ash. The whole process flow of the modified desulfurization ash is:

[0045] 1. Weigh the desulfurization ash;

[0046] 2. Put the desulfurization ash into a closed container;

[0047] 3. Select MnO according to the weight of desulfurization ash 2， and MnO 2 Crushed into powder, the particle size is the same as the desulfurization ash, generally 200-300 mesh;

[0048] 4. MnO 2 The po...

Embodiment 3

[0054] A semi-dry flue gas desulfurization ash modification treatment method, the flue gas desulfurization ash obtained after using the CFB desulfurization process technology in the glass production process, using MnO 2 The flue gas desulfurization ash is modified together with water and oxidants, so that the flue gas desulfurization ash is continuously oxidized during the modification process, wherein the calcium oxide in the flue gas desulfurization ash is converted into calcium hydroxide, and calcium sulfite is converted into sulfuric acid Calcium, so as to obtain modified desulfurization ash. The whole process flow of the modified desulfurization ash is:

[0055] 1. Weigh the desulfurization ash, the ash particle size is 200-300 mesh;

[0056] 2. Put the desulfurization ash into a closed container;

[0057] 3. Select MnO according to the weight of desulfurization ash 2， and MnO 2 Crushed into powder, the particle size is the same as that of desulfurization ash;

[005...

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Abstract

The invention discloses a semi-dry process flue gas desulfurized ash modification treatment method. Flue gas desulfurized ash, which is obtained after a CFB desulfurization technology, is modified by MnO2, water, and an oxidant; during the modification process, flue gas desulfurized ash is continuously oxidized, calcium oxide in flue gas desulfurized ash is converted into calcium hydroxide, calcium sulfite is converted into calcium sulfate, and modified desulfurized ash is obtained. Specifically, the modification treatment comprises the following steps: spraying atomized water, which contains a MnO2 catalyst, on desulfurized ash, stirring for 5 to 10 minutes to uniformly mix desulfurized ash and water; then spraying an oxidant on the desulfurized ash, stirring for 25 to 40 minutes, and evenly mixing so as to fully modify desulfurized ash. According to the modification treatment method, atomized water containing MnO2 and an oxidant are combined to modify desulfurized ash in an enclosed environment; after modification, the water content of desulfurized ash is 15 to 17%, desulfurized ash can be directly entrucked without dehydration or drying, and the energy and time are saved.

Description

technical field [0001] The present invention relates to a modification treatment method of a substance, in particular to a modification treatment method of semi-dry desulfurization ash after flue gas desulfurization, which is mainly used for the application of CFB (circulating fluidized bed flue gas desulfurization technology) In the environmental protection project of dealing with flue gas; it belongs to the field of environmental protection technology. Background technique: [0002] As the country is now vigorously promoting industrial environmental protection, industrial flue gas treatment is also one of the important courses in environmental protection. In order to meet the environmental protection indicators required by the state, in the current glass industry, the CFB desulfurization process technology is adopted to improve the flue gas treatment and meet the national environmental protection requirements. However, the disposal of desulfurization ash, the product of f...

Claims

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Application Information

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IPC IPC(8): C01F11/02C01F11/46
CPCC01F11/02C01F11/46
Inventor 刘四清阳小宇陈立新刘力武石克明隆平游金坤龙立华吴新华石慧
Owner 株洲醴陵旗滨玻璃有限公司
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