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Method for preparing desulfurization synergist from limestone

A technology of limestone and synergist, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve problems affecting the desulfurization effect, unstable coal sulfur content, and desulfurization system exceeding the design value, etc., to alleviate equipment calcium Scale, reduce the effect of energy consumption

Inactive Publication Date: 2019-02-12
遵义古匡坝建材有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, 90% of domestic power plants use FGD wet desulfurization technology, but due to the limited solubility of limestone and unstable coal sulfur content, the desulfurization system often exceeds the design value, which affects the desulfurization effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Unless otherwise stated, the percentages used in the present invention are all percentages by weight.

[0027] A synergistic limestone desulfurization synergist consists of the following components in parts by weight:

[0028] 90 parts of limestone, 10 parts of dolomite, 1 part of magnesium sulfate, 1 part of adipic acid, 2 parts of disodium adipate;

[0029] The content of calcium carbonate in the limestone is more than or equal to 93%;

[0030] The desulfurization synergist is a powdery white solid particle with a particle size of 350 mesh.

[0031] The preparation method is:

[0032] Crush the above limestone and dolomite to 2-3cm, mix them and add them to the Raymond mill through a belt conveyor;

[0033] The above-mentioned magnesium sulfate, adipic acid, disodium adipate are mixed in the mixing tank in proportion, then weighed into the Raymond machine and powdered with limestone and dolomite in step (1) Grind to a particle size of 350 mesh.

[0034] Tests hav...

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PUM

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Abstract

The invention discloses a method for preparing a desulfurization synergist from limestone. The desulfurization synergist is prepared from the following matters in parts by weight: 30 to 90 parts of limestone, 5 to 45 parts of dolomite, 5 to 15 parts of magnesium sulfate, 5 to 10 parts of organic polyatomic acid and 1 to 8 parts of organic polyatomic acid salt. The method disclosed by the inventionhas the advantages of improving the desulfurization rate, keeping the desulfurization rate to be 90% or above when the coal sulfur exceeds 20% of a design value, reducing energy consumption of a desulfurization system and relieving the formation of equipment calcium scale in the desulfurization system.

Description

technical field [0001] The invention relates to a desulfurization synergist, in particular to a synergistic limestone desulfurization synergist, which is applied to a wet flue gas desulfurization system of a power plant, that is, an FGD system, and belongs to the field of desulfurization synergists. Background technique [0002] At present, 90% of domestic power plants use FGD wet desulfurization technology, but due to the limited solubility of limestone and unstable coal sulfur content, the desulfurization system often exceeds the design value, which affects the desulfurization effect. Contents of the invention [0003] In order to solve the above problems, the present invention designs a synergistic limestone desulfurization synergist. When the coal sulfur content exceeds 20% of the design value, the desulfurization synergist can maintain a desulfurization rate of more than 90%, ensuring the desulfurization effect. [0004] Technical scheme of the present invention is: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/50
CPCB01D53/502B01D53/80B01D2251/402B01D2251/404B01D2258/0283
Inventor 肖金林
Owner 遵义古匡坝建材有限责任公司
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