Mode for laying boiler furnace burning guarding belt

A laying method and boiler furnace technology, applied in the direction of boiler smoke tube/fire tube, etc.

Inactive Publication Date: 2008-07-30
HENAN ZHONGFU IND
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Problems solved by technology

[0003] In order to solve the defects existing in the existing boiler furnace guard combustion zone, the present invention provides a new boiler furnace guard combustion belt laying method, which can increase the input of boiler desuperheating water, make it easy to adjust the temperature of the main steam, and reduce the coking degree of the furnace , to ensure the safe and economical operation of the boiler

Method used

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  • Mode for laying boiler furnace burning guarding belt

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specific Embodiment approach

[0010] The location and tools for implementation are marked in the diagram, and the specific instructions are as follows: 1. Cold ash hopper; 2. Burner; 3. Large rectangular combustion belt; ; 6. Tail flue.

[0011] The way of laying the guard combustion belt in the boiler furnace is to lay the guard combustion belt 4 on the water-cooled walls 5 on all four sides of the furnace. The shape of the guard combustion belt 4 is rectangular and divided into four small pieces. "Ten" shape, the horizontal and vertical spacing between each block is 1 meter, and the distance from the lower rectangular guard burning belt 3 is also 1 meter, the length and width of the four small rectangles are all 1 meter, and the large rectangular guard The burning belt is 6.5 meters long and 5 meters wide.

[0012] The two sides of the rectangular guard combustion belt 3 on the four sides water wall 5 of the original boiler furnace are equally reduced in length, and the reduced guard combustion band are...

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Abstract

The invention relates to a laying method of a refractory belt in a boiler furnace. The refractory belt is arranged on water screens of the four sides of the boiler furnace. The laid refractory belt is of rectangular and is divided into four small parts. The space among the four parts is cross-shaped. The horizontal space and the vertical space between every two of the four small parts are both 1meter. The upper rectangular refractory belt keeps a 1meter space with the lower rectangular refractory belt. All four small rectangles are 0.5-1meter long and wide. The big rectangular refractory belt is 6-7 meters long and 4.5-5.5meters wide. The laying method of the refractory belt in the boiler furnace can be put into operation during the boiler outage period. The practice of a company where the boiler works for continuous half a year after changing the laying method of the refractory belt proves that, compared with the state before changing the laying method of the refractory belt, the input amount of desuperheated water increases obviously, the main steam temperature is easy to be adjusted by hand and the overranging rate of the main steam temperature decreases obviously, the coking degree in the boiler furnace is obviously lessened, thus guaranteeing the safe and economical operation of the boiler and achieving the anticipated effects.

Description

technical field [0001] The invention relates to a boiler furnace of a power station, in particular to a laying method of a combustion belt in the furnace furnace of the boiler. Background technique [0002] The furnace of the power plant boiler is composed of four water-cooled walls, and its cross-section is rectangular. In order to stabilize combustion and adjust the heat absorption ratio of the water-cooled wall and the superheater, the four-sided water-cooled walls in the furnace are equipped with a combustion belt (the material is high-alumina refractory concrete). The position of the sanitary combustion belt laid on the water-cooled wall of the existing furnace is lower, so that after the boiler is put into operation, there has always been a problem that the amount of desuperheating water input is too small, and the main steam temperature automatic adjustment device cannot be used. The amount is too small, resulting in a very small valve adjustment range, very difficul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B37/06
Inventor 王宏明王晓鹏尚振九张太山尹洪波韩其鹏孙建平
Owner HENAN ZHONGFU IND
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