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Method for reducing deep peak-shaving oil consumption of 600 MW supercritical "W" flame unit

A supercritical and unit technology, applied in the field of power production, can solve the problem of high peak shaving cost, and achieve the effect of avoiding the loss of starting oil and power generation.

Inactive Publication Date: 2018-12-21
贵州华电桐梓发电有限公司
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Problems solved by technology

[0011] The technical problem to be solved by the present invention is: to provide a method for keeping the combustion stability and safety of the boiler without adding oil when the 600MW supercritical “W” flame thermal power unit is in a low-load state, so as to solve the need for oil injection in the prior art Ensuring that the unit is in a low-load state for stable combustion makes the problem of high peak shaving costs

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  • Method for reducing deep peak-shaving oil consumption of 600 MW supercritical "W" flame unit

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing and specific embodiment the invention is further introduced:

[0031] refer to figure 1 , a method for reducing the fuel consumption of a 600MW supercritical "W" flame unit for deep peak regulation, when the load is lower than 300MW, the method includes,

[0032] Boiler coal quality control, the moisture content in the raw coal should not be greater than 10%, the calorific value of the furnace coal should not be lower than 17MJ / kg, the volatile content should be above 9%, and the ash content should be below 35%;

[0033] Boiler combustion control,

[0034] When the load is lower than 300MW, the thermal load of the boiler is controlled at 50%, the air pressure of the primary fan outlet main pipe is not lower than 6.0Kpa, the total air volume is controlled at 1000-1100t / h, the oxygen content is between 3-4%, and the dynamic separator speed Control at 90-100%, to ensure that the outlet temperature of the powder pipe is great...

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Abstract

The invention discloses a method for reducing deep peak-shaving oil consumption of a 600 MW supercritical ''W'' flame unit. The boiler heat load can be ensured to burn stably without oil when it is 50% by controlling the coal quality, the boiler combustion uniformity, the boiler combustion stability and a boiler bypass used to share the heat load, so as to solve the problems that the prior art needs to be oiled to ensure the stable combustion of the unit under a low load state, and the peak-shaving cost is high.

Description

technical field [0001] The invention relates to the field of electric power production methods, in particular to a method for reducing the deep peak-shaving oil consumption of a 600MW supercritical "W" flame unit. Background technique [0002] In the once-through boiler of the supercritical unit, the water is heated and directly turned into steam without intermediate links, and the heat storage capacity of the boiler is poor; when the unit is under low load, in order to ensure the effective cooling of the water wall, there must be sufficient water circulation power; when the unit is under low load, The furnace temperature is low, and the boiler combustion is poor, which is easy to cause combustion deterioration. Therefore, the following problems must be faced during deep peak shaving: [0003] (1) Unstable coal quality. Most thermal power plants in Guizhou burn anthracite. The coal used in the power plant is transported by car, and it is anthracite from different coal mine...

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Application Information

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IPC IPC(8): F22B1/22F23K1/00F23K3/00F23N5/00F01K13/02
Inventor 雷先伟冯天武刘定鳌杨仕强葛永海谢明红谭鹏飞文正勇严成兵许亚
Owner 贵州华电桐梓发电有限公司
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