Coal-fired power plant ash conveying system dynamic energy-saving control method based on actual coal quality parameters

Abstract

The invention discloses a coal-fired power plant ash conveying system dynamic energy-saving control method based on actual coal quality parameters. The method comprises the steps: 1) establishing a unit fire coal real-time coal quality parameter model for an ash conveying system; 2) carrying out an optimal ash falling time control test on the ash conveying system by using the real-time coal quality parameter model of the unit fire coal in the step 1) to obtain an ash falling time control curve of the ash conveying system, which adapts to the dynamic ash flow, of each ash conveying unit; 3) automatically setting the ash falling time of each ash conveying unit according to the ash falling time control curve of the ash conveying system in the step 2), the coal quality parameters of each raw coal bunker and the coal quantity of each coal feeder in combination with the ash falling time control curve of the ash conveying system adapting to the dynamic ash flow; 4) if all the ash conveying units operate normally in the ash conveying process, performing the step 3) circularly; and if an abnormal phenomenon occurs in a certain ash conveying unit, stopping ash falling immediately, and directly performing a fly ash conveying program, meanwhile, automatically settting a safety margin coefficient to give an alarm prompt on a monitoring picture.

Description

technical field [0001] The invention belongs to the technical field of operation of the ash conveying system of a coal-fired power plant, and in particular relates to a dynamic energy-saving control method for the ash conveying system of a coal-fired power plant based on actual coal quality parameters. Background technique [0002] The flue gas produced by the combustion of boilers in coal-fired power plants contains a large amount of fly ash. After being captured in the dust removal system, it is transported to the ash storage by the positive pressure dense phase pneumatic ash conveying system below it, and then transported to the outside of the plant by car. The gas source of the ash conveying system is provided by the ash conveying air compressor. The ash conveying system is divided into several ash conveying units according to the different parts where the dust collector unit corresponding to the upper part is divided according to the flue gas flow direction. The energy...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of ash clogging and high energy consumption in the positive pressure dense phase ash conveying system of the existing coal-fired power plant. safety margin factor Provide a dynamic energy-saving control method for coal-fired power plant ash conveying system based on actual coal quality parameters

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