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Industrial ammonia desulfurization and dust removal integrated system

A technology of desulfurization and dust removal and ammonia desulfurization, which is applied in the field of flue gas purification, can solve problems such as large production impact, inability to handle ammonium sulfate solution, and failure of normal operation of flue gas desulfurization of thermoelectric boilers, achieving high efficiency

Inactive Publication Date: 2019-09-03
HUBEI SHUANGHUAN SCIENCE AND TECHNOLOGY STOCK CO LTD
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Problems solved by technology

However, in order to completely eliminate the environmental hazard of "soda slag cannot be treated", the ammonia-soda plant needs to be shut down. After the ammonia-soda plant is shut down, the ammonium sulfate solution cannot be processed, and the flue gas desulfurization of the thermoelectric boiler cannot operate normally.
Moreover, in the existing technology, when the desulfurization tower is overhauled, the corresponding boiler needs to be shut down, which has a great impact on production

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  • Industrial ammonia desulfurization and dust removal integrated system

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, so as to facilitate a clearer understanding of the present invention, but they do not limit the present invention.

[0023] Such as figure 1 As shown, the industrial ammonia desulfurization and dust removal integrated system of the present invention includes a flue gas system, an absorption circulation system, an ammonium sulfate post-treatment system, an oxidation tank 1 and an ammoniation tank 2;

[0024] The flue gas system includes a boiler induced draft fan 3 connected to the boiler, and the boiler induced draft fan 3 is connected to the absorption circulation system to provide flue gas for the absorption circulation system;

[0025] The absorption circulation system includes a desulfurization tower 4, and the desulfurization tower 4 is divided into a concentration circulation area 41, a SO 2 The absorption cycle area 42, the wate...

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Abstract

The invention relates to the field of flue gas purification and discloses an industrial ammonia desulfurization and dust removal integrated system which comprises a flue gas system, an absorption circulation system, an ammonium sulfate post-treatment system, an oxidation tank and an ammonia adding tank. The flue gas system provides flue gas for the absorption and circulation system. The absorptioncirculation system discharges the flue gas after desulfurization and dust removal through a straight-line chimney at the top of a desulfurization tower, and generated ammonium sulfate slurry is pumped to the ammonium sulfate post-treatment system through an ammonium sulfate discharge pump; and the ammonium sulfate post-treatment system processes a sulfuric acid solution discharged from the desulfurization tower to obtain a solid ammonium sulfate product. According to the industrial ammonia desulfurization and dust removal integrated system, the flue gas emission index after desulfurization meets the ultra-low emission requirement, and all important pollutants meet the emission index.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular to an integrated system of industrial ammonia desulfurization and dust removal. Background technique [0002] According to the relevant requirements of the "Comprehensive Implementation of Ultra-low Emissions and Energy-Saving Transformation Work Plan for Coal-fired Power Plants", chemical companies must meet the ultra-low emission standard in 2020: NOx≤50Nmg / m 3 、SO2≤35Nmg / m 3 , Dust≤10Nmg / m 3 For this reason, most companies adopt the method of ammonia desulfurization for flue gas desulfurization. Although the desulfurization effect can be further improved by increasing the amount of ammonia water and desulfurization liquid circulation, the increase in ammonia water will lead to an increase in escaped ammonia content, and aerosols will be generated, resulting in smoke The tailing of the gas is serious. After the dust is replaced by several dust collectors, the clean...

Claims

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Application Information

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IPC IPC(8): B01D53/80B01D53/50B01D50/00C01C1/24
CPCB01D53/502B01D50/00C01C1/24B01D2258/0283
Inventor 汪万新张立武邱章华余火安熊峰
Owner HUBEI SHUANGHUAN SCIENCE AND TECHNOLOGY STOCK CO LTD