Ultra-supercritical coal-fired boiler unit start adjusting method and system

A coal-fired boiler, ultra-supercritical technology, applied in the field of combustion boilers

Inactive Publication Date: 2015-09-23
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Abstract
  • Description
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Problems solved by technology

[0005] Based on this, it is necessary to provide a complete ultra-supercritical coal-fired boiler unit startup and commissioning method to guide and control the startup and commissioning process of the ultra-supercritical coal-fired boiler unit. Coal-fired boiler ...

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  • Ultra-supercritical coal-fired boiler unit start adjusting method and system
  • Ultra-supercritical coal-fired boiler unit start adjusting method and system
  • Ultra-supercritical coal-fired boiler unit start adjusting method and system

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Embodiment Construction

[0021] In order to explain in detail the technical scheme of the start-up and debugging method of the ultra-supercritical coal-fired boiler unit of the present invention and the effects thereof, in the following explanations, an existing ultra-supercritical coal-fired boiler unit will be mainly used as the research object to describe. In this ultra-supercritical coal-fired boiler unit, the coal-fired boiler is a 2×1050MW unit of China Resources Power (Haifeng) Co., Ltd. The boiler model is HG-3100 / 28.25-YM4. The boiler is an ultra-supercritical once-through boiler with variable pressure operation. Type layout, single furnace, intermediate reheating, low NOX main burner and high-level burn-off air staged combustion technology, reverse double tangential combustion mode, the furnace is a vertically rising membrane water-cooled wall with internal threaded tubes, and the atmosphere expansion start-up system ; In addition to the coal / water ratio, the temperature adjustment method ...

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Abstract

The invention provides an ultra-supercritical coal-fired boiler unit start adjusting method and system. The method includes the steps of igniting a coal-fired boiler in an ultra-supercritical coal-fired boiler unit, sequentially conducting a coal-fired boiler no-load running test and a coal-fired boiler load running test, collecting the running working condition data of a coal-fired boiler in the no-load running test and the load running test respectively, setting a safety door in the ultra-supercritical coal-fired boiler unit on the basis of the data, conducting combustion adjustment and thermal engineering automatic operation, controlling the full-load running preset time of the coal-fired boiler, collecting full-load running working condition data, and conducting combustion adjustment on the ultra-supercritical coal-fired boiler unit according to the full-load running working condition data. In the whole process, the complete ultra-supercritical coal-fired boiler unit start adjusting mode is adopted, the ultra-supercritical coal-fired boiler unit start adjusting process can be guided and controlled, and the start effect of the ultra-supercritical coal-fired boiler unit and the safe running of a generator set are ensured.

Description

technical field [0001] The invention relates to the technical field of combustion boilers, in particular to a method and system for starting and debugging an ultra-supercritical coal-fired boiler unit. Background technique [0002] Coal-fired power generation generates high-temperature and high-pressure steam to drive steam turbines to generate electricity. The higher the temperature and pressure of the steam, the higher the efficiency of power generation. At 374.15 degrees Celsius and 22.115 MPa pressure, the density of water vapor will increase to be the same as that of liquid water. This condition is called the critical parameter of water. Parameters higher than this are called supercritical parameters. When the temperature and air pressure rise to the range of 600 degrees Celsius and 25-28 MPa, it enters the "state" of ultra-supercritical. [0003] In ultra-supercritical coal-fired power generation technology, ultra-supercritical coal-fired boiler units are widely used...

Claims

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Application Information

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IPC IPC(8): F23N5/00
Inventor 李德波李方勇陈磊许凯钟俊冯晓鸣陈拓尹凯琪
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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