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A synergist for flue gas wet desulfurization

A technology of wet desulfurization and synergist, which is applied in the field of flue gas desulfurization, can solve the problems of low desulfurization efficiency, achieve the effects of inhibiting the rapid drop of pH value, improving desulfurization efficiency, and increasing dispersibility

Active Publication Date: 2022-06-07
湖北海力环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above technical deficiencies, propose a wet flue gas desulfurization synergist that can provide desulfurization efficiency, and solve the technical problem of low desulfurization efficiency in the prior art

Method used

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  • A synergist for flue gas wet desulfurization
  • A synergist for flue gas wet desulfurization
  • A synergist for flue gas wet desulfurization

Examples

Experimental program
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Embodiment

[0028] Example: Flue gas wet desulfurization synergist

[0029] In order to solve the technical problem of low desulfurization efficiency, a plurality of formulations of desulfurizers are provided in this embodiment, as shown in Table 1. Among them, the surfactant in Comparative Example 1 is sodium alkylbenzene sulfonate J17; the catalyst in Comparative Example 2 is a metal composite Fe(NO) of ferric nitrate, ceria nitrate and zirconium oxynitrate 3 ) 3 / Ce(NO 3 ) 3 ·6H 2 O / ZrO(NO 3 ) 2 , in which the mass ratio of Fe:Ce:Zr is 1:1:1; the additive in Comparative Example 3 is sodium phosphate T5; the catalyst in Comparative Example 4 is ZnO / TiO 2 (Zn:Ti:Zr=1:1). The pH of Examples 1-9 and Comparative Examples 1-4 was formulated between 4.5-6.5.

[0030] Table 1

[0031]

[0032]

[0033] Example: Desulfurization efficiency of flue gas wet desulfurization synergist

[0034] After weighing according to the combination of the wet flue gas desulfurization synergi...

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Abstract

The invention relates to the technical field of flue gas desulfurization, in particular to a flue gas wet desulfurization synergist, which comprises the following raw materials in parts by weight: 30-60 parts of a surfactant, 1-5 parts of a pH buffer, and 2-5 parts of a catalyst parts and 0.1‑0.5 parts of additives. An application method for preparing a flue gas wet desulfurization synergist. After weighing according to the combination and weight ratio of the flue gas wet desulfurization synergist, add it to limestone slurry at normal temperature and pressure, and stir uniform, and then pump the slurry into the desulfurization reaction tower. The flue gas desulfurization synergist provided by the invention can increase the dissolved calcium concentration in the desulfurization slurry through the high-valence oxidation and chelation ability of the compound metal elements dissolved in the desulfurization slurry, and improve the desulfurization efficiency to 95.3%. The use of the desulfurization synergist provided by the invention can reduce the amount of limestone used in the desulfurization process, increase the dispersibility of limestone, and reduce scaling of equipment.

Description

technical field [0001] The invention relates to the technical field of flue gas desulfurization, in particular to a flue gas wet desulfurization synergist. Background technique [0002] Thermal power plants will release a large amount of sulfur dioxide in the process of burning coal, which will cause serious pollution to the environment. The existing sulfur dioxide is desulfurized and then discharged. The usual desulfurization treatment is to perform adsorption desulfurization on the exhaust gas in the desulfurization spray tower. In order to improve the desulfurization efficiency, the desulfurization spray tower is generally expanded and modified, or the sulfur content of the coal is controlled, or a desulfurization synergist is used. The transformation of the desulfurization spray tower is costly and the cycle is long. Ney adapts to changes in coal type and load, and controlling the sulfur content of coal combustion will greatly increase the fuel cost of the power plant....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/50B01D53/80
CPCB01D53/501B01D2258/0283B01D2251/404B01D2251/606
Inventor 郑玲
Owner 湖北海力环保科技股份有限公司