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Multi-channel reverse injection type swirl single cone combustor and use method thereof

A burner and multi-channel technology, applied in the direction of combustion methods, burners, burners burning powder fuel, etc., can solve the problems of narrow load adjustment range, poor coal type adaptability, high nitrogen oxides, etc., and achieve a wide load adjustment range , Enhance the effect of mixing rate and high combustion efficiency

Pending Publication Date: 2020-11-06
CHINA COAL RES INST CCRI ENERGY SAVING TECH CO LTD
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  • Abstract
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Problems solved by technology

However, the load adjustment range of the pulverized coal burner is narrow, and the adaptability of the coal type is poor; and compared with the chain furnace and circulating fluidized bed, the pulverized coal industrial boiler still has the problem of high nitrogen oxides

Method used

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  • Multi-channel reverse injection type swirl single cone combustor and use method thereof
  • Multi-channel reverse injection type swirl single cone combustor and use method thereof
  • Multi-channel reverse injection type swirl single cone combustor and use method thereof

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Embodiment Construction

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by those skilled in the art to which the present invention belongs. At the same time, in the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer" and the like are bas...

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Abstract

The invention relates to a multi-channel reverse injection type swirl single cone combustor and a use method thereof. The combustor comprises a pulverized coal supply mechanism, a transition channel,a multi-stage air distribution assembly, diversion plates, a stable combustion cavity and a rectifying cavity; the multi-stage air distribution assembly comprises N air ducts, the N air duct is connected with the stable combustion cavity and the rectifying cavity in sequence to form a combustor body, the pulverized coal supply mechanism penetrates through the inner part of the combustor body,and the transition channel sleeves the pulverized coal supply mechanism; except for the N air duct, the other air ducts are of double-layer hollow structures, and one end of at least one diversionplate is inserted into the corresponding air duct; at least one direct current channel is formed between each diversion plate and the stable combustion cavity, flaring is formed in the other end of each diversion plate, and the angle of the flaring is the same as the angle of the stable combustion cavity. The combustor adopts the design of the multi-stage air distribution assembly, air is dividedinto N strands to enter the combustor body, and the turbulence intensity at the airflow boundary is strong, so that the air and powder mixing rate is strengthened, pulverized coal ignites stably, andhigh-efficiency and low-nitrogen combustion of the pulverized coal can also be guaranteed.

Description

technical field [0001] The invention relates to a pulverized coal burner, in particular to a multi-channel reverse jet swirl single-cone burner and its use method, belonging to the technical field of efficient and clean utilization of coal. Background technique [0002] At present, in the field of pulverized coal industrial boilers, a variety of burners such as blunt body burners, swirl burners, and reverse injection burners have appeared. The purpose of high-efficiency and low-nitrogen combustion of pulverized coal. However, the load adjustment range of pulverized coal burners is narrow, and the adaptability of coal types is poor; moreover, pulverized coal industrial boilers still have the problem of high nitrogen oxides compared with chain furnaces and circulating fluidized beds. Contents of the invention [0003] In view of the problems referred to above, one of the objects of the present invention is to provide a multi-channel reverse jet swirl single-cone burner with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/02
CPCF23D1/02
Inventor 牛芳王翰锋罗伟张红顺王乃继梁兴崔豫泓李小炯颜淑娟王鹏涛裘星王诗珺崔名双王志星李殿新刘鹏中刘振宇刘刚闫黎黎贾楠龚艳艳杜伯犀于海鹏王建朋陈怀俊王学文陈喆张松张斌
Owner CHINA COAL RES INST CCRI ENERGY SAVING TECH CO LTD
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