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Boiler operation control method capable of reducing high-temperature corrosion of water cooling wall

An operation control and boiler operation technology, which is applied in the direction of controlling combustion, combustion method, and adjusting fuel supply, etc., can solve the problems of poor atmosphere parameters of the water wall of the furnace, limit the wide use of boilers, and affect the safety of boilers, and improve the atmosphere parameters. , The effect of improving boiler economy and preventing high temperature corrosion

Active Publication Date: 2019-11-08
GUODIAN NANJING ELECTRIC POWER TEST RES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the number of domestic ultra-supercritical octagonal tangential combustion boilers is relatively small. In particular, there are about 8 1000MW ultra-supercritical octagonal double tangential combustion boilers in operation. During the operation of the boiler, there are differences in the atmosphere parameters of the furnace water wall under high load. , especially the high-temperature corrosion of the water wall in the hot corner area is serious, which seriously affects the safety of the boiler, and also limits the wide use of this type of boiler

Method used

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  • Boiler operation control method capable of reducing high-temperature corrosion of water cooling wall
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  • Boiler operation control method capable of reducing high-temperature corrosion of water cooling wall

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Embodiment 1

[0074] The coal mills specifically put into operation in this embodiment are ABCDEF 6 coal mills.

[0075] like figure 1 As shown, the specific steps of the ultra-supercritical octagonal double tangential combustion mode boiler of the present invention to reduce the high-temperature corrosion operation control method of the water wall are as follows:

[0076] (1) Input coal type, gradually start 6 coal mills, 2 primary fans, 2 supply fans, 2 induced draft fans, 2 air preheaters and boilers, and gradually increase the unit load to 950MW;

[0077] (2) The specific method of adjusting the coal seam perimeter air opening of each mill corresponding to the burner to 10%-100% is as follows: adjust 1# and 4# corner burners to correspond to the coal seam perimeter air opening of 70%, 2#, 3# , 5#, 6#, 7# and 8# corner burners correspond to 65% of coal seam perimeter air opening.

[0078] (3) The specific method for adjusting the opening of the secondary auxiliary air of each burner co...

Embodiment 2

[0146] The coal mills specifically put into operation in this embodiment are 4 ABDE coal mills.

[0147] like figure 1 As shown, the specific steps of the ultra-supercritical octagonal double tangential combustion mode boiler of the present invention to reduce the high-temperature corrosion operation control method of the water wall are as follows:

[0148] (1) Input coal type, gradually start ABDE 4 coal mills, 2 primary fans, 2 supply fans, 2 induced draft fans, 2 air preheaters and boilers, and gradually increase the unit load to 620MW;

[0149] (2) The specific method of adjusting the coal seam perimeter air opening of each burner corresponding to the burner to 15%-100% is as follows: adjust 1#, 2#, 3#, 4#, 5#, 6#, 7# and 8# corner burner corresponds to 35% of coal seam perimeter air opening.

[0150] (4) The specific method of adjusting the secondary auxiliary air opening of each burner corresponding to the burner to 10%-100% is as follows: 1#, 2#, 3#, 4#, 5#, 6#, 7# ,...

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Abstract

The invention discloses an operation control method capable of reducing high-temperature corrosion of a water cooling wall and suitable for an octagonal dual tangential firing manner boiler. Accordingto the operation control method, the opening degree of surrounding air of each layer, the opening degree of secondary auxiliary air, the opening degree of OFA air, the operation oxygen amount and theopening degree of SOFA air are optimized and adjusted, the atmosphere parameters of the face of the water cooling face are effectively improved, and therefore high-temperature corrosion of the watercooling wall of the boiler is prevented, and boiler safety is improved.

Description

technical field [0001] The invention relates to a boiler operation control method, in particular to an octagonal double tangential circular combustion mode boiler operation control method for reducing high-temperature corrosion of a water wall. Background technique [0002] At present, the number of domestic ultra-supercritical octagonal tangential combustion boilers is relatively small. In particular, there are about 8 1000MW ultra-supercritical octagonal double tangential combustion boilers in operation. During the operation of the boiler, there are differences in the atmosphere parameters of the furnace water wall under high load. , especially the high-temperature corrosion of the water-cooled wall in the hot corner area is serious, which seriously affects the safety of the boiler and limits the widespread use of this type of boiler. [0003] It is of great significance to study how to improve the operation control mode of the ultra-supercritical octagonal double tangenti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23K3/00F23L9/00F23L15/02F23M5/08F23N1/02
CPCF23K3/00F23L9/00F23L15/02F23M5/08F23N1/02Y02E20/34
Inventor 陈辉杨希刚蔡培戴维葆
Owner GUODIAN NANJING ELECTRIC POWER TEST RES CO LTD