Coal-water slurry combustion method and its combustion equipment

Abstract

The invention relates to a methods and combustion equipment for burning coal water mixture, the method is that atomized coal water mixture is spurted in combustion chamber for suspension combustion, combustion flame gradually form high temperature gas in process of flowing forward, make the combustion-supporting air form a suspension combustion-supporting air driving field in hearth and return some proper high temperature gas to suspension combustion chamber burning again. After exchanging heat the gas is exhausted by chimney. The combustion equipment consists of hearth and coal water mixture jet combustion engine, the combustion chamber is in the hearth, the hearth at the injection end of coal water mixture are installed with main air duct, damper as well as many air doors. The method and equipment can combust the coal water mixture completely, and automatic discharge ash, increasing combustion ratio of coal water mixture to the ultimate can save energy and protect environment.

Description

technical field [0001] The invention relates to a coal water slurry combustion method and combustion equipment thereof. Background technique [0002] Coal water slurry is a new type of coal-based clean fuel, which can replace heavy oil, diesel, and natural gas for industrial heating, and can also be used for boiler renovation. It has the characteristics of high efficiency, energy saving, low price, and less pollution emissions. [0003] The inventor once proposed to the Chinese Patent Office on July 25, 2003 a patent application (publication number is CN 1553077A) that the title of invention is "a kind of combustion method and combustion equipment of coal-water slurry fuel", and disclosed a A coal-water slurry intensified combustion method and combustion device that can use various coal-water slurry fuels to intensify combustion, automatically remove slag and ash, and optimize the overall air pressurized slurry supply, that is, the furnace is evenly distributed into primary ...

AI Technical Summary

Problems solved by technology

However, in this method, the combustion time of the coal-water slurry atomized fuel in the furnace is short, and complete combustion is not achieved, and a certain amount of coal-water slurry resources are still wasted, resulting in a waste of energy.

[0004] In addition, for the asphalt stone heating and mixing station of the road construction project, since the transportation distance needs to follow the road construction site transfer, so for the hot blast furnace, the core equipment of the asphalt stone mixing rotary kiln in the heating and mixing station, a proposal is made that not only saves energy in combustion, but also protects the environment. , and at the same time have the requirements of excellent comprehensive performance that is convenient for disassembly, movement and transportation, but the hot blast stoves in the prior art cannot meet this demand

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