Middle storage type pulverized coal boiler combustion system and combustion method thereof
A combustion system and pulverized coal boiler technology, which are applied in the combustion method, the combustion using lump fuel and powder fuel, the combustion using liquid fuel and powder fuel, etc., can solve the problem that the performance of the combustion system of the intermediate storage type pulverized coal boiler needs to be improved. And other issues
Pending Publication Date: 2022-03-01
TSINGHUA UNIV
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Problems solved by technology
[0004] Therefore, the performance of the combustion system of the intermediate storage type pulverized coal boiler still needs to be improved
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[0026] Embodiments of the present invention will be described in detail below, and examples of the embodiments are illustrated in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions. The embodiments described below are illustrative of the invention, and is intended to be construed as limiting the invention. In an embodiment, specific techniques or conditions are not specifically described, and the techniques or conditions described in the art or according to the product specification. The reagents or instruments used are not indicated by the manufacturer, all of which can be obtained through the market.
[0027] In one aspect of the invention, the present invention provides an intermediate storage pulverized pulverized boiler combustion system, according to an embodiment of the present invention, a reference figure 1 , figure 2 The combustion system includes: a thick splitter 10, a fu...
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The invention provides an intermediate storage type pulverized coal boiler combustion system and a combustion method thereof. The combustion system comprises a rich-lean separator, wherein the rich-lean separator comprises a tertiary air inlet, a rich-stream tertiary air outlet and a lean-stream tertiary air outlet; the hearth internally comprises a main combustion area, the main combustion area is provided with an upper secondary air nozzle, a light-stream tertiary air nozzle, a middle secondary air nozzle and a thick-stream tertiary air nozzle, the upper secondary air nozzle and the light-stream tertiary air nozzle are arranged at the upper part of the main combustion area, and the light-stream tertiary air nozzle is arranged close to the upper secondary air nozzle and is positioned on the fire-facing side of the upper secondary air nozzle; the middle secondary air nozzle and the thick tertiary air nozzle are arranged in the middle of the main combustion area, and the thick tertiary air nozzle is arranged close to the middle secondary air nozzle and located on the fire facing side of the middle secondary air nozzle. And the combustor is connected with the hearth. According to the combustion system, the stability of combustion in the boiler is enhanced, the low-NOx combustion effect can be achieved, meanwhile, efficient combustion of pulverized coal is achieved, and the combustion efficiency of the boiler is improved.
Description
Technical field [0001] The present invention relates to the field of boiler combustion technology, in particular, to intermediate storage pulverized pulverized boiler combustion systems and combustion methods, Background technique [0002] The combustion system of the intermediate storage pulverized coal boiler is mainly composed of coal mill, gas-solid separator, pulverized coal, drainage machine, powder machine, etc., and the coal mill is provided to provide sufficient pulverization, excess coal. The powder will be stored in the coal powder bin, and the pulverized coal is carried out of the grinding machine, and the gas-solid separator is separated, which forms a powder containing powder containing fine coal powder, i.e., three winds (or weighing). In order to protect the safety of the intermediate storage pulverized boiler combustion system, it is prevented from explosive and the temperature of the three winds, and the three winds have a relationship between intermittent, low ...
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IPC IPC(8): F23C5/08F23C7/00
CPCF23C5/12F23C7/00Y02E20/34
Inventor 张海张扬吕俊复刘青吴玉新
Owner TSINGHUA UNIV