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Direct-current burner primary air chamber and method for preventing boiler slagging and high-temperature corrosion

A high-temperature corrosion and burner technology, which is applied in the direction of combustion methods, combustion chambers, and combustion using block fuel and powder fuel, and can solve problems such as boiler slagging and high-temperature corrosion

Pending Publication Date: 2022-05-13
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the present invention provides a once-through burner primary air chamber and method for preventing boiler slagging and high-temperature corrosion, so as to solve the problem of four-corner tangential circle without affecting the ignition and stability of pulverized coal air flow. Problems of slagging and high temperature corrosion in combustion boilers

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  • Direct-current burner primary air chamber and method for preventing boiler slagging and high-temperature corrosion
  • Direct-current burner primary air chamber and method for preventing boiler slagging and high-temperature corrosion
  • Direct-current burner primary air chamber and method for preventing boiler slagging and high-temperature corrosion

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Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0037] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention provides a direct-current burner primary air chamber and method for preventing boiler slagging and high-temperature corrosion. The direct-current burner primary air chamber for preventing boiler slagging and high-temperature corrosion comprises a pulverized coal nozzle, a first peripheral air nozzle, a second peripheral air nozzle and an isolation device. The first peripheral air nozzle and the second peripheral air nozzle are arranged on the two sides of the isolation device and surround the pulverized coal nozzle. The first peripheral air nozzle is located on the fire facing side of pulverized coal airflow, and the second peripheral air nozzle is located on the fire backing side of the pulverized coal airflow; the first peripheral air nozzle is communicated with the secondary air box, and the second peripheral air nozzle can be connected and disconnected with the secondary air box and the hot primary air mother pipe. The first peripheral air nozzle and the second peripheral air nozzle are arranged separately, and the air source of the second peripheral air nozzle on the back fire side is switched on line, so that the problems of slagging and high-temperature corrosion of the tangential firing boiler are effectively solved on the premise of not influencing ignition and stable combustion of pulverized coal airflow.

Description

technical field [0001] The invention belongs to the field of boiler combustion in a coal-fired power station, and relates to a primary air chamber of a direct-flow burner and a method for preventing boiler slagging and high-temperature corrosion. Background technique [0002] Four-corner tangential combustion is the main combustion method of coal-fired power plant boilers. Direct-flow burners are arranged on the four corners of the boiler furnace. The side of the powder flow towards the fire is ignited by the direct impact of the high-temperature flame at the upstream adjacent corners, and the four-corner jets support each other to form a rotating combustion flame. [0003] The slagging and high-temperature corrosion of four-corner tangential combustion boilers are related to the diameter of tangential combustion, the melting point of incoming coal ash, the sulfur content of incoming coal, the atmosphere attached to the wall, and the rigidity of pulverized coal airflow. The...

Claims

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Application Information

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IPC IPC(8): F23C7/00F23C5/08F23M5/08F23J1/00
CPCF23C7/008F23C5/08F23M5/08F23J1/00
Inventor 杨辉党小建张海龙沈植张良平张宇博刘超
Owner XIAN THERMAL POWER RES INST CO LTD
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