Boiler gas production balancing system during blending combustion of industrial wastes
A technology of balancing system and industrial waste, applied in control system, steam generation, lighting and heating equipment, etc., can solve the problem of boiler combustion condition stability, unstable industrial solid waste calorific value, main steam pressure fluctuation, etc. problems, to achieve the effect of reducing boiler coal-fired costs, avoiding hidden dangers in operation, and stabilizing flue gas emissions
Pending Publication Date: 2020-02-07
福建华电永安发电有限公司
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Problems solved by technology
[0005] Since the industrial solid waste is fed into the furnace by the pneumatic conveying system, the conveying volume is extremely unstable and fluctuates from 0 to 70 tons, and the calorific value of the industrial solid waste (clothing, shoes and hats) is unstable, especially when the industrial solid waste is suddenly interrupted. The stability of working conditions has a great influence, and the main steam pressure fluctuates greatly, causing unsafe factors; how to solve it is a research direction
Method used
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[0038] When the load of the unit is 270MW and the heat supply is 150t / h, and the main steam pressure is 16.5MPa, if all coal is used as fuel, the feed rate of the coal feeder is about 165t / h.
[0039] After the system is activated, two conveyor belts are used to input mixed-fired industrial waste cloth to the boiler, and the coal material output by the coal feeder is composed of lignite 75% + 10% gangue and bituminous coal 25%. At this time, the industrial waste cloth is relatively output by the coal feeder. The conversion coefficient of the material is 0.88, so when the feeding speed of industrial waste cloth is about 15t / h, the coal feeding rate can be reduced to about 151.8t / h, which saves coal, and incinerates a large amount of industrial waste cloth at the same time, which is beneficial to Environmental friendly.
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The invention provides a boiler gas production balancing system during blending combustion of industrial wastes. The boiler gas production balancing system is used for keeping boiler gas production stable when industrial solid wastes is blended in boiler fuel. The balancing system comprises a control module and a boiler fuel input mechanism, wherein the boiler fuel input mechanism comprises a coalfeeder and a solid waste input mechanism provided with a belt weigher; the control module stores a conversion coefficient for converting solid waste into fire coal; when a boiler works, the control module detects the input speed of the solid waste through the belt weigher and converts the input speed of the solid waste into the input speed of the fire coal through the conversion coefficient, andthe control module keeps the main steam pressure, temperature and smoke emission stable when the boiler works by adjusting the input speed of the fire coal of the coal feeder and the input speed of the industrial solid waste of the solid waste input mechanism. The boiler gas production balancing system can keep the combustion working condition of the boiler stable when the solid industrial waste is blended in the boiler.
Description
technical field [0001] The invention relates to the technical field of boiler power generation, in particular to a boiler gas production equalization system when burning industrial waste. Background technique [0002] Biomass mainly refers to lignocellulose (lignin) such as straw and trees other than grain and fruit in the process of agricultural and forestry production, leftovers of agricultural product processing, agricultural and forestry waste, and poultry manure and waste in the process of animal husbandry. matter etc. Biomass energy is an important part of renewable energy. The efficient development and utilization of biomass energy will play a very positive role in solving energy and ecological environment problems. [0003] Solid waste refers to the solid and semi-solid waste materials that pollute the environment and are discarded because of human production, construction, daily life and other activities, which cannot be used at a certain time and place. Municipal...
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IPC IPC(8): F22B35/00
CPCF22B35/00
Inventor 许燕飞邱国华钟绍松肖衍滋廖丛林杨锦松陈林海曾方蔡芳龙牟航宇刘勇丁燕武张国进沈一新候林海
Owner 福建华电永安发电有限公司