Environment-friendly energy-saving pulverized coal and coal gas burner

Abstract

The invention discloses an environment-friendly energy-saving pulverized coal and coal gas burner. The environment-friendly energy-saving pulverized coal and coal gas burner includes an inner sleeve and a shell which circularly sleeves the outer side of the inner sleeve, one end of the inner sleeve and one end of the shell are fixed to a burner mounting base, the other end of the inner sleeve andthe other end of the shell are provided with an end face seal plate a, a middle partition plate is arranged in an cavity formed between the inner sleeve and the shell, the burner mounting base is provided with a burner outlet and a tertiary air channel, a secondary air inlet and a tertiary air inlet are formed in the shell, a pulverized coal swirl device is arranged on the outer side of the end face seal plate a and includes a swirl shell body, a pulverized coal inlet is formed in the swirl shell body, a coal gas channel is formed inside the swirl shell body and the inner sleeve in a sleeved mode, a pulverized coal swirl annular cavity is formed between the swirl shell body and the coal gas channel, a coal-gas and pulverized-coal mixed swirl annular cavity is formed between the coal gas channel and the inner sleeve, and an annular throttling port is formed between the pulverized coal swirl annular cavity and the coal-gas and pulverized-coal mixed swirl annular cavity. The environment-friendly energy-saving pulverized coal and coal gas burner solves the problems that when pulverized coal serves as fuel to be directly burned, burning is not easy to control and pollutants are easy togenerate.

Description

technical field [0001] The invention relates to an environment-friendly and energy-saving pulverized coal gas burner. Background technique [0002] At present, blast furnace pulverized coal injection technology has been widely used in iron and steel metallurgical production enterprises. As a natural energy source, pulverized coal has the advantage of being relatively cheap compared to other fuels; at the same time, the efficiency of burning pulverized coal as a direct fuel to provide energy is much higher than converting it into electrical energy for reuse. [0003] However, in the production process (such as the ignition operation of sintering machine, etc.) that needs to directly provide heat except for the ironmaking blast furnace, the application of pulverized coal is not much; this is because, in other production processes, pulverized coal is used as a direct fuel Difficult to control combustion and easy to produce NO X and other polluting gases. Contents of the inv...

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Problems solved by technology

[0004] Purpose of the invention: the purpose of the present invention is to provide a method that can realize the clean combustion of coal powder and can realize the problems of direct combustion of pulverized coal as fuel in other production processes that need to provide heat except for blast furnaces. An environmentally friendly and energy-saving pulverized coal gas burner that interchanges gaseous fuels such as pulverized coal and gas

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