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High-effective limestone desulfurization additive

A limestone and additive technology, applied in gas treatment, membrane technology, dispersed particle separation, etc., can solve the problems of affecting the desulfurization effect, unstable coal sulfur content, limited solubility of limestone, etc. consumption, reducing the effect of cycle intensity

Inactive Publication Date: 2019-03-29
遵义古匡坝建材有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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Experimental program
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Embodiment 1

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

[0027] A synergistic limestone desulfurization additive, consisting 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, and 2 parts of disodium adipate; the content of calcium carbonate in the limestone is ≥93%;

[0029] The desulfurization additive is a powdery white solid particle with a particle size of 350 mesh.

[0030] The preparation method is:

[0031] Crush the above-mentioned limestone and dolomite to 2-3cm, mix them and add them to the Raymond mill through a belt conveyor; mix the above-mentioned magnesium sulfate, adipic acid, and disodium adipate in a mixing tank in proportion, and then pass them through a belt conveyor. Machine weighing machine weighs and sends into Raymond machine and grinds together with limestone, dolomite of step (1), to particle s...

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Abstract

The invention discloses a high-effective limestone desulfurization additive including, by weight, 30-90 parts of limestone, 5-45 parts of dolomite, 5-15 parts of MgSO4, 5-10 parts of organic polybasicacid, and 1-8 parts of organic polybasic acid salt. The desulfurization additive can improve desulfurization rate; when the sulfur content of coal exceeds design value by 20%, the desulfurization additive can hold desulfurization rate by more than 90%. The desulfurization additive can reduce energy consumption of a desulfurization system and delays generation of calcium scale in equipment of thedesulfurization system.

Description

technical field [0001] The invention relates to a desulfurization additive, in particular to a synergistic limestone desulfurization additive, which is applied to a wet flue gas desulfurization system of a power plant (FGD system), and belongs to the field of desulfurization additives. 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 additive. When the sulfur content of coal exceeds 20% of the design value, the desulfurization additive can maintain the desulfurization rate above 90%, ensuring the desulfurization effect. [0004] Technical scheme of the present invention is: [0005] A synergi...

Claims

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Application Information

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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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