Automatic control method for evaporation treatment of wet flue gas desulphurization wastewater

Abstract

The invention provides an automatic control method for evaporation treatment of wet flue gas desulphurization wastewater. According to the invention, smoke load, deviation of smoke temperature before wastewater evaporation and a set temperature and a liquid level of a wastewater tank are used as fuzzy control input parameters, and the starting lasting time of a wastewater metering pump and the stopping time of the wastewater metering pump are used as control output quantities, so as to establish a three-input two-output fuzzy controller used for evaporation control of desulphurization wastewater. The invention provides an intelligent control method for an evaporation process of desulphurization wastewater. The intelligent control method is suitable for the automatic control process of a desulphurization wastewater evaporation process; and by using the intelligent control method, the credibility of the input parameters is improved, the possibility of malfunction brought by single-flow deviation adjustment is reduced, and the reliability of the control method is enhanced.

Description

technical field [0001] The invention belongs to the field of flue gas desulfurization wastewater treatment process control and relates to an automatic control method for wet flue gas desulfurization wastewater evaporation treatment. Background technique [0002] Wet flue gas desulfurization technology is the most commonly used flue gas desulfurization technology in my country at present. A certain amount of wastewater will be generated during the desulfurization process using this technology. The wastewater contains excessive heavy metals, suspended solids and weak acidity, and is directly discharged It will cause great harm to the environment and must be discharged after being treated up to the standard. At present, one process in the wet flue gas desulfurization wastewater treatment is to introduce the desulfurization wastewater into the wastewater tank, and use the wastewater metering pump to spray the desulfurization wastewater in the wastewater tank into the pipeline bet...

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Problems solved by technology

[0003] The problem to be solved by the present invention is: in the existing wet flue gas desulfurization technology, the control of the amount of waste water in the evaporation treatment is not suitable for the evaporation capacity of the flue gas, which causes corrosion, affects the effect of flue gas desulfurization, and causes the blockage of the evaporation and dust removal equipment

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