DCS data mining wet desulphurization system standard emission operation curve acquisition system and method

Abstract

The invention provides a DCS data mining wet desulphurization system standard emission operation curve acquisition system and method. The method comprises the following steps: acquiring a mining data frame from a DCS database of a coal unit; obtaining an effective data frame from the obtained mined data frame; performing normalization processing on the original flue gas SO<2> concentration and the unit load corresponding to each group of observation data in the obtained effective data frame to obtain a normalized effective data frame; obtaining different subclasses of each effective sub-data frame; calculating a representative centroid of each subclass of each effective sub-data frame; and according to each representative centroid of the obtained effective sub-data frames, obtaining an operation curve of up-to-standard emission of the coal-fired boiler wet desulphurization system by taking the unit load as a horizontal coordinate and taking the SO<2> concentration of the original flue gas as a vertical coordinate. The desulfurization equipment operation curve conforming to the actual working condition is obtained and is referenced by operators to reasonably adjust operation parameters, and standard emission of SO<2> pollutants is ensured.

Description

technical field [0001] The invention relates to the field of wet desulfurization systems of coal-fired boilers, in particular to a DCS data mining system and method for obtaining standard discharge operating curves of wet desulfurization systems. Background technique [0002] At present, in order to enhance the profitability of enterprises, coal-fired power stations have begun to vigorously blend coal types with low calorific value and high sulfur content, which can easily cause SO in the original flue gas. 2 If the concentration rises, if it reaches the limit output of the desulfurization system operating conditions, it will easily lead to the net flue gas SO 2 The hourly mean concentration exceeds 35mg / Nm 3 , thus being assessed by the environmental protection department. Generally, the performance parameters and characteristic curves of the desulfurization system are obtained through the performance test method, but the test method requires high manpower, material resou...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a DCS data mining wet desulfurization system discharge operating curve acquisition system and method, which solves the problem of obtaining the desulfurization system in the prior art The method of performance parameters and characteristic curves has the defects of high cost and low efficiency

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