Intelligent regulation and control system and method for preparing high-added-value products from SO2 absorption by-products

Abstract

The invention relates to an intelligent regulation and control system and a method for preparing high-added-value products from SO2 absorption by-products, and the system comprises a flue gas purification cooling subsystem, a flue gas desulfurization subsystem, an ammonium bisulfite refining subsystem, a hydroxylamine sulfate preparation subsystem and a high-added-value product preparation subsystem which are sequentially arranged, the flue gas purification cooling subsystem and the flue gas desulfurization subsystem are arranged in a flue between an SCR denitration system and a power plant chimney, and the flue gas desulfurization subsystem, the hydroxylamine sulfate preparation subsystem and the high value-added product preparation subsystem are respectively connected with an intelligent regulation and control subsystem. According to the invention, multi-means such as flue gas purification and cooling, segmented efficient desulfurization, ammonium bisulfite refining, high-added-value product preparation, intelligent multi-factor regulation and control and the like are adopted, so that full-process multi-means matching optimization control such as flue gas pre-purification and washing-ammonium bisulfite oxidation inhibition-oxime intermediate refining and the like is realized; and preparation of high-added-value products such as finished oxime is realized at low cost at the same time of realizing high efficiency SO2 removing.

Description

technical field [0001] The invention belongs to the technical field of air pollution control and resource recovery, and relates to an intelligent control system and method for recovering sulfur dioxide from high-sulfur coal flue gas and using by-products to produce high value-added chemical products. Background technique [0002] my country is the world's largest producer and consumer of coal. 75% of industrial fuels, 76% of power generation energy and 80% of civilian commercial energy are coal. The composition and structure of coal are very complex and diverse, and these components will form soot, SO 2 , NOx, CO 2 And many harmful substances such as trace heavy metals, causing acid rain, greenhouse effect, haze weather, ozone layer destruction and many other environmental problems. The desulfurization of high-sulfur coal power plants has always been the focus of research in my country. Traditional ammonia desulfurization has high operating costs, and there is a problem o...

AI Technical Summary

Problems solved by technology

But this technology has the following disadvantages: the reaction raw material is calcium salt (calcium bisulfite), and the by-product obtained by the existing ammonia desulfurization technology is ammonium bisulfite. There are differences in settings, etc.

Disposal desulfurization has high operating costs, and desulfurization by-products are likely to cause secondary pollution because they are not recycled; while recovery desulfurization has the problem of low added value of recovered products, which ultimately affects operating costs

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