Determination algorithm for effective desulfurization of fire coal machine group of heat-engine plant

Abstract

The invention discloses arithmetic for determining the desulfurization effectiveness in a coal-fired unit in a power plant, and relates to the technical field of automatic control. The invention aims to solve the technical problem of determination of quantitative desulfurization. The arithmetic comprises the following steps: 1) determining the emission concentration of SO2 at the outlet of a chimney; 2) determining the desulfurization effectiveness of a desulfurization island; 3) determining the state of a bypass baffle actuator; 4) collecting gas flue flow rate and concentration (Vy,n,CSO#-(2,n)) at the inlet and the outlet of the desulfurization island, and a bypass flue gas passage, and the flow rate (Vy, j) of glue gas actually produced by the unit; and 5) further determining the effectiveness of desulfurization according to 1)-3) and the calculation of a equaling (Vy,j-Vy,1) / Vy,j. The determination arithmetic provided by the invention has the characteristics of being capable of determining quantitative desulfurization, and effectively evaluating desulfurization of glue gas by a power plant to facilitate energy-saving and emission reduction.

Description

technical field [0001] The invention relates to an automatic control technology, in particular to a technology for realizing energy saving and emission reduction for the effective desulfurization judgment algorithm of a coal-fired unit in a thermal power plant. Background technique [0002] In 2007, my country's sulfur dioxide emissions will begin to decline year by year after reaching the highest in history in 2006, becoming a symbolic year in the history of sulfur dioxide emission control. According to the data released by the state, in the first half of 2007, the country's total sulfur dioxide emissions were 12.634 million tons, a decrease of 0.88% compared with the same period last year; while the thermal power generation increased by 18.3%, the sulfur dioxide emissions of electricity decreased by 5.2% year-on-year. The rapid development of flue gas desulfurization industrialization in thermal power plants is the key factor for the improvement of power sulfur dioxide con...

AI Technical Summary

Problems solved by technology

At present, the flue gas desulfurization of domestic thermal power plants is still in the development stage. In terms of effective determination of flue gas desulfurization, there is no way to judge whether the flue gas from the desulfurization tower has reached the emission standard based on the actual operation of the coal-fired units of the thermal power plant.

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