Combustion control method and combustion control system of pulverized-fuel boiler
A pulverized coal boiler and control device technology, which is applied in the combustion control system and the field of combustion control of pulverized coal boilers, can solve the problems of insufficient combustion stability and low ignition success rate of pulverized coal boilers, and achieve stable operation status and stable combustion operation , the effect of accurate oxygen supply
Active Publication Date: 2012-05-23
CHNA ENERGY INVESTMENT CORP LTD +2
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[0004] The present invention proposes a combustion control method and a combustion control system for a pulverized coal boiler, the main purpose of which is to solve the problem of low ignition success rate of pulverized coal boilers in the prior art, and another purpose is to solve the problem of insufficient combustion stability of pulverized coal boilers question
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[0021] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0022] figure 1 It is a schematic diagram of the main steps of the combustion control method of the pulverized coal boiler according to the embodiment of the present invention. Such as figure 1 As shown, the combustion control method of the pulverized coal boiler according to the embodiment of the present invention mainly includes the following steps:
[0023] Step S10: Obtain the state of the actuator and the sensor.
[0024] Step S11: Judging whether ignition is possible. This step is mainly to judge whether the state of each actuator, such as motor, electric valve, etc. is normal, and whether it can be started and stopped normally; and judge whether the feedback signal of each sensor is normal, that is, the boiler has the conditions for ignition and opening, for example, the intermediate silo has material Wait.
[0025] Step ...
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The invention discloses a combustion control method and a combustion control system of a pulverized-fuel boiler, overcoming the problem that the pulverized-fuel boiler has the defects of unstable combustion and low effective combustion in the prior art. The method comprises the following steps: supplying a small amount of secondary air to the pulverized-fuel boiler under the condition that the flame intensity achieves the preset strength after the pulverized-fuel boiler is lighted up, then supplying primary air for the pulverized-fuel boiler, and supplying to pulverized coal; and finally amplifying the secondary air quantity after the pulverized coal is lighted up and combust stably. The technique scheme adopted by the invention is conducive to ensuring the stable and efficient operation of the pulverized-fuel boiler.
Description
technical field [0001] The invention relates to the technical field of industrial boilers, in particular to a combustion control method and a combustion control system for a pulverized coal boiler. Background technique [0002] Industrial boilers are important power equipment in the production process, and the quality of their control directly affects the stability of the production process of related devices. At present, there are many types of industrial boiler control systems, but the existing automatic control systems only realize basic data display and motor start and stop, and cannot guarantee the efficient and stable operation of the boiler. [0003] The pulverized coal boiler used in industry is a new type of coal-fired boiler that has appeared in recent years. This kind of boiler mainly grinds coal into pulverized coal and then sends the pulverized coal into the pulverized coal boiler through airflow for combustion. It has high combustion efficiency and can Instant...
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IPC IPC(8): F22B35/00F24H9/20F23L9/00F23N1/02
Inventor 麻林王晓雷霍卫东仝胜录
Owner CHNA ENERGY INVESTMENT CORP LTD