An on-line control system for all-powder powder in an ultra-supercritical coal-fired unit boiler
A coal-fired unit, ultra-supercritical technology, applied in the direction of comprehensive factory control, control of combustion, combustion methods, etc., can solve the problem that the operating conditions of the boiler deviate from the optimal value, and the measurement and control issues
Active Publication Date: 2022-07-12
广东通德电力工程有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide an ultra-supercritical coal-fired unit boiler full-air powder online control system, which has the advantages of being able to effectively measure and control the parameters of boiler air, powder, ash and flue gas, and solves the problem of existing coal-fired The boiler cannot effectively measure and control the boiler air, powder, ash and flue gas parameters, and can only control the combustion through the overall parameters (such as oxygen content, steam parameters, etc.), and the boiler operating conditions are far from the optimal value
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[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0020] see Figure 1-3 , An on-line control system for all-pulverized coal powder for a boiler of an ultra-supercritical coal-fired unit, comprising a monitoring unit, and the monitoring unit includes an on-line monitoring unit for pulverized coal concentration, an on-line monitoring unit for pulverized coal fineness, an on-line secondary air monitoring unit, and an on-line monitoring unit for primary air. unit, on-line monitoring un...
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The invention discloses an on-line control system for all air pulverized coal powder in a boiler of an ultra-supercritical coal-fired unit. , primary air on-line monitoring unit, burn-out air on-line monitoring unit, fly ash carbon content on-line monitoring unit, carbon monoxide on-line monitoring unit and air-powder balance distributor control unit, the output end of the monitoring unit is unidirectionally electrically connected with a signal processing unit A unit cabinet, the output end of the signal processing unit cabinet is connected with a host computer control unit for a one-way signal, and the signal processing unit cabinet includes a CAN and a protocol converter. The invention solves the problem that the existing coal-fired boiler cannot effectively measure and control the parameters of boiler air, powder, ash and flue gas, and can only carry out combustion control (such as oxygen amount, steam parameters, etc.) through the overall parameters, and the operating conditions of the boiler are far from Deviation from the optimal value.
Description
technical field [0001] The invention relates to the technical field of coal-fired unit boilers, in particular to an on-line control system for all-powder powder for an ultra-supercritical coal-fired unit boiler. Background technique [0002] Coal-fired boilers refer to coal burned as fuel. After the heat of coal is converted, steam is generated or turned into hot water, but not all the heat is effectively converted, and some reactive power is consumed, so there is an efficiency problem, generally larger ones. The efficiency of the boiler is higher, between 60% and 80%. The coal-fired boiler is a coal-fired boiler, which means that the heat is released by burning coal in the furnace, and the heat medium water or other organic heat carriers (such as heat transfer oil, etc. ) thermal power equipment heated to a certain temperature (or pressure). Coal-fired boilers are mainly classified according to their uses. Boilers (for steam supply), coal-fired heat transfer oil boilers (f...
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IPC IPC(8): G01N33/00F23N1/10
CPCF23N1/102Y02P90/02
Inventor 郑锦溪谢三虎
Owner 广东通德电力工程有限公司