Turbulent burner capable of rapidly switching pulverized coal feeding modes and using method
A swirling burner and fast switching technology, which is applied to the burner, combustion method, burner and other directions of burning powder fuel, can solve the problems of narrow boiler load adjustment range, high requirements for combustible coal types, and easy damage and replacement. Achieve the effects of widening the load adjustment range, ensuring the ignition and burnout process, and strengthening the mixing of wind and powder
A swirling burner and fast switching technology, which is applied to the burner, combustion method, burner and other directions of burning powder fuel, can solve the problems of narrow boiler load adjustment range, high requirements for combustible coal types, and easy damage and replacement. Achieve the effects of widening the load adjustment range, ensuring the ignition and burnout process, and strengthening the mixing of wind and powder
CN113237057AActive Publication Date: 2021-08-10CHINA COAL RES INST CCRI ENERGY SAVING TECH CO LTD
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[0025] 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, but 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 work all belong to the protection scope of the present invention.
[0026] 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 based ...
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The invention discloses a turbulent burner capable of rapidly switching pulverized coal feeding modes and a using method of the turbulent burner. The burner comprises a pulverized coal reverse supply mechanism, a pulverized coal forward supply mechanism, a transition channel inner sleeve, a transition channel outer sleeve, a secondary air guide cylinder and a stable combustion cavity. The secondary air guide cylinder and the stable combustion cavity are connected to form a burner body, the transition channel outer sleeve is arranged in the secondary air guide cylinder, the pulverized coal reverse supply mechanism penetrates through the central axis in the burner body, and the transition channel inner sleeve is arranged outside the inlet end of the pulverized coal reverse supply mechanism. A secondary air channel is formed between the secondary air guide cylinder and the transition channel outer sleeve, and the transition channel inner sleeve and the transition channel outer sleeve are connected to form a closed transition channel. The pulverized coal reverse supply mechanism is replaced with the pulverized coal forward supply mechanism, so that quick switching of pulverized coal feeding modes is realized.
Description
technical field [0001] The invention relates to a pulverized coal burner, in particular to a swirl burner for quickly switching pulverized coal feeding modes and a method for using the same, belonging to the technical field of high-efficiency 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, due to the single method of sending pulverized coal into the burner, the violent combustion process inside the burner is limited to small adjustments in operating parameters, so there is a phenomenon that the load adjustment range of pulverized coal industrial boilers is narrow and the requirements for combustible coal are high; and the burner The internal structure has been surrounded by high-temperature combustion pro...
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Patent Timeline
10 Aug 2021
Publication
CN113237057A
- IPC
- F23D1/02; F23C7/00
- CPC
- F23D1/02; F23C7/002; Y02E20/34
- Inventors
- 刘鹏中; 牛芳