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Compound synergistic additive for wet-process flue gas desulphurization and preparation method of compound synergistic additive for wet-process flue gas desulphurization

A technology of wet flue gas desulfurization and compound efficiency, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of no reliable additive selection and evaluation scheme, large application randomness, etc., and achieve low cost and high efficiency Desulfurization efficiency, the effect of simple preparation

Inactive Publication Date: 2016-06-15
武汉光谷环保科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there are many types of desulfurization additives in China, and the application is random, and there is no reliable evaluation plan for additive selection.

Method used

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  • Compound synergistic additive for wet-process flue gas desulphurization and preparation method of compound synergistic additive for wet-process flue gas desulphurization
  • Compound synergistic additive for wet-process flue gas desulphurization and preparation method of compound synergistic additive for wet-process flue gas desulphurization
  • Compound synergistic additive for wet-process flue gas desulphurization and preparation method of compound synergistic additive for wet-process flue gas desulphurization

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The wet flue gas desulfurization composite synergistic additive designed by the present invention, wherein the weight and number ratio of each component is: 65 parts of adipic acid; 7 parts of nylon acid; 7 parts of sodium citrate; 4 parts of sodium sulfate; 6 parts of iron sulfate 11 parts of manganese chloride; under normal temperature and pressure, take adipic acid, nylon acid, sodium citrate, sodium sulfate, ferric sulfate, manganese chloride and mix and stir respectively Can.

[0020] The above raw materials are mixed and stirred according to the weight ratio of each component and the finished product is added into the desulfurization absorption tower. The initial addition amount is 750mg / L, and the daily addition amount is supplemented according to the calculation of synergist loss.

[0021] The composite desulfurization synergistic additive provided in this example was applied to a wet flue gas desulfurization system for a 600MW power plant boiler. The long-term ...

Embodiment 2

[0023] In this embodiment, the designed wet flue gas desulfurization compound synergistic additive, wherein the weight and number ratio of each component is:

[0024] 70 parts of adipic acid; 10 parts of nylon acid; 7 parts of sodium citrate; 3 parts of sodium sulfate; 5 parts of iron sulfate; 5 parts of manganese chloride; Take adipic acid, nylon acid, sodium citrate, sodium sulfate, ferric sulfate and manganese chloride, mix and stir evenly.

[0025] The finished product after mixing and stirring the above raw materials according to the ratio of parts by weight is added to the desulfurization absorption tower. The initial addition amount is 800mg / L, and the daily addition amount is supplemented according to the calculation of synergist loss.

[0026] The composite desulfurization synergistic additive provided in this example was applied to a wet flue gas desulfurization system for a 600MW power plant boiler. The long-term monitoring results showed that the desulfurization ef...

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Abstract

The invention discloses a compound synergistic additive for wet-process flue gas desulphurization and a preparation method of the compound synergistic additive for wet-process flue gas desulphurization.The compound synergistic additive comprises, by weight, 55-80 parts of adipic acid, 5-15 parts of nylon acid, 5-14 parts of sodium citrate, 1-10 parts of sodium sulfate, 3-10 parts of ferric sulfate and 2-10 parts of manganese chloride.The preparation method of the compound synergistic additive includes: at the normal temperature and under normal pressure, weighing the adipic acid, the nylon acid, the sodium citrate, the sodium sulfate, the ferric sulfate and the manganese chloride according to the parts by weight while mixing and stirring uniformly.The compound synergistic additive has the advantages that the compound synergistic additive is simple to prepare and low in cost; limestone activity is promoted, calcium carbonate dissolution speed is increased and limestone consumption and gas-phase and liquid-phase resistance are reduced, so that desulphurization efficiency is improved; calcium sulphite oxidation rate can be promoted, pH (potential of hydrogen) buffer ability of slurry is improved and CaSO3 mild scale generation is inhibited to protect running equipment.

Description

technical field [0001] The invention relates to the technical field of wet flue gas desulfurization, in particular to a composite synergistic additive for wet flue gas desulfurization and a preparation method thereof. Background technique [0002] Among many flue gas desulfurization technologies, wet flue gas desulfurization has long occupied a dominant position, and wet desulfurization devices account for about 80% of the desulfurization devices that have been built in the world. Although the wet desulfurization technology is relatively mature, reliable in operation, and high in desulfurization efficiency, my country proposed a binding target of 8% for sulfur dioxide emission reduction in the "Twelfth Five-Year Plan" and promulgated the "Emission Standard of Air Pollutants for Thermal Power Plants" (GB13223 -2011), where for SO 2 More stringent emission limits have made more than 80% of thermal power units currently facing the problem of desulfurization and efficiency impro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/50
CPCB01D53/502B01D53/80B01D2251/404B01D2257/302B01D2259/126
Inventor 邵敬爱刘斌冯凯乐田路泞陈汉平陈苗赵清华
Owner 武汉光谷环保科技股份有限公司
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