Method and apparatus for processing sulfur-containing flue gas by lean manganese mine and rhodochrosite

A treatment method and technology for lean manganese ore, applied in chemical instruments and methods, separation methods, manganese sulfate, etc., to achieve huge social benefits, achieve harmlessness, and increase equipment investment.

Inactive Publication Date: 2015-07-01
GUIZHOU UNIV
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Problems solved by technology

[0004] The object of the present invention is to provide a method and device for treating sulfur-containing flue gas with poor manganese ore and rhodochrosite, so as to solve the problem of

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  • Method and apparatus for processing sulfur-containing flue gas by lean manganese mine and rhodochrosite
  • Method and apparatus for processing sulfur-containing flue gas by lean manganese mine and rhodochrosite

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but not as any limitation to the present invention.

[0019] A method for treating sulfur-containing flue gas with poor manganese ore and rhodochrosite, the method includes absorption, purification, crystallization and drying processes; absorbing SO in sulfur-containing flue gas through poor manganese ore and rhodochrosite 2 ; absorb SO 2 The resulting product is purified, crystallized and dried, part of which is recycled as batching water for manganese-poor and rhodochrosite slurry, and the other part is used as a by-product. Poor manganese ore is the main desulfurizer, and rhodochrosite is the regulator of the pH value of the pulp. Poor manganese ore is prepared by adding water to the poor manganese ore mixing tank to prepare manganese ore slurry, and rhodochrosite is prepared by adding water to the rhodochrosite mixing tank to make rhodochros...

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Abstract

The invention discloses a method and an apparatus for processing sulfur-containing flue gas by lean manganese mine and rhodochrosite. The method comprises the processes of absorption, purifying, crystallization and drying. SO2 in the sulfur-containing flue gas can be absorbed by lean manganese mine and rhodochrosite, a part of a resultant generated by absorption of SO2 can be purified, crystallized and dried for being as an ingredient water of the lean manganese and rhodochrosite for cycle use, and the other part is taken as a by-product. According to the invention, MnSO4 production and SO2 exhaust gas treatment are combined, harmlessness, quantitative reduction and resource of SO2 can be realized, and the method develop the market for using the lean manganese mine resource. The operation cost is low, the method is not restricted by manganese mine grade, a reduction calcination process of the manganese sulfate production is omitted, a lot of energy is saved, sulfuric acid source problem is solved, SO2 exhaust gas treatment problem can be solved, and the manganese sulfate product can reach the requirement of fertilizer grade (GB1622-86) and feed grade (GB5253-87).

Description

technical field [0001] The invention relates to a method and a device for treating sulfur-containing flue gas with manganese-poor ore and rhodochrosite, and belongs to the technical field of sulfur-containing flue gas desulfurization and comprehensive utilization. Background technique [0002] The problem of air pollution in iron and steel complexes is becoming more and more serious. The raw materials and fuels of the iron and steel industry are limited by economy, cost and resources, and it is difficult to fundamentally solve SO 2 environmental pollution problems. According to incomplete statistics, the production of each ton of steel sintering process SO 2 The emission is 1.15kg / t steel, and the SO in the flue gas 2 The concentration is low, the mass concentration is less than 0.5%, the sintering flue gas volume is large, the temperature range is also large, the flue gas volume fluctuates greatly, the paroxysm is strong, the emission point distribution is wide, ...

Claims

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Application Information

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IPC IPC(8): B01D53/50B01D53/80C01G45/10
Inventor 吴复忠李军旗金会心王文豪李水娥
Owner GUIZHOU UNIV
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