A method for comprehensive treatment of side wall coking and reducing atmosphere of opposing coal-fired boilers
A comprehensive treatment, coal-fired boiler technology, applied in the combustion method, the use of block fuel and gaseous fuel combustion, the use of liquid fuel and gaseous fuel combustion and other directions, can solve the effect of nozzle coking on the use function, the periodicity of coating protection , Insufficient range of wind protection against the wall, etc., to reduce the risk of coking and high-temperature corrosion, improve safety, and improve economic use value.
Active Publication Date: 2022-04-19
SUZHOU XIRE ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD +1
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Problems solved by technology
[0002] There have been many years of research and treatment on the coking and high-temperature corrosion of the side wall water wall of the opposed coal-fired boiler. Among them, the mitigation of the side wall water wall coking mainly consists of the structural modification of the burner, the enhancement of combustion in the furnace, and the addition of wall-mounting on both sides of the burner. Wind and side walls are installed with wall-mounted wind; to alleviate high-temperature corrosion of side wall water-cooled walls is mainly prevented by installing wall-mounted wind on both sides of the burner, adding wall-mounted wind or wall-mounted wind caps on side walls, and spraying water-cooled walls Reducing gas and H 2 Corrosive gases such as S are close to the wall surface of the water-cooled wall, but in the above mitigation methods, there are still problems of insufficient protection range and coking of the nozzle affecting the use function in the above mitigation methods, and the anti-corrosion and anti-wear coating also has periodic problems of protection
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[0016] Such as figure 1 As shown, a method for comprehensive treatment of side wall coking and reducing atmosphere of a hedge coal-fired boiler, which includes the following steps:
[0017] S1. In general, the boiler furnace body 1 includes a front wall 2, a rear wall 3, a left wall 4, and a right wall 5. The front wall 2 and the rear wall 3 are arranged in opposite directions, and the left wall 4 and the right wall 5 are opposite to each other. Arrangement, multi-layer combustion layers are arranged in the furnace 6 of the boiler, and the opposite front wall 2 and rear wall 3 are respectively connected to the air duct (not shown in the figure) through the secondary air box 7 of the layer, and the combustion layer of the same layer There are 6 burner nozzles 8 arranged in the middle of the secondary wind box 7 in the middle layer, so as to spray into the furnace 6 through the burner nozzles 8, and the wall-mounted wind 9 located at the same height on the front wall 2 and the r...
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The invention provides a method for comprehensive treatment of coking and reducing atmosphere on the side wall of a coal-fired boiler, which offsets the burner nozzles on the left side wall and the right side wall into the furnace by a certain angle to reduce the time The diffusion and scour of air-coal powder flow to the left and right walls can reduce the risk of coking and high-temperature corrosion of the side wall water cooling wall, effectively protect the side wall water cooling wall, and improve safety.
Description
technical field [0001] The invention relates to the technical field of sidewall coking and high-temperature corrosion of a facing coal-fired boiler, in particular to a comprehensive treatment method for sidewall coking and reducing atmosphere of a facing coal-fired boiler. Background technique [0002] There have been many years of research and treatment on the coking and high-temperature corrosion of the side wall water wall of the opposed coal-fired boiler. Among them, the mitigation of the side wall water wall coking mainly consists of the structural modification of the burner, the enhancement of combustion in the furnace, and the addition of wall-mounting on both sides of the burner. Wind and side walls are installed with wall-mounted wind; to alleviate high-temperature corrosion of side wall water-cooled walls is mainly prevented by installing wall-mounted wind on both sides of the burner, adding wall-mounted wind or wall-mounted wind caps on side walls, and spraying wat...
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IPC IPC(8): F23C5/28F23C7/02
CPCF23C5/28F23C7/02
Inventor 王小华赵鹏张雷梅振锋彭小敏陈敏陈宝康姚啸林赵俊武薛晓垒俞胜捷刘瑞鹏丁奕文朱晋永
Owner SUZHOU XIRE ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD