Station boiler anthracite powder combustion plant

Abstract

The invention relates to an anthracite powder combusting device of a utility boiler. The anthracite powder combusting device comprises a boiler furnace (1), wherein, a cyclone combustion tube (2) is installed at the rear part of the boiler furnace (1), a spraying gun inside a combusting chamber (3) through which the anthracite powder is rotated and sprayed into the cyclone combustion tube (2) at high speed is arranged at the upper part of the cyclone combustion tube (2), and a one-time tangential air supplying outlet (4) for feeding the required air of the anthracite powder is arranged above the cyclone combustion tube (2). A two-time tangential air supplying outlet (5) for feeding the air required to ensure the thorough combustion of the anthracite powder after firing is arranged on the furnace wall of the combusting chamber of the cyclone combustion tube (2). The anthracite powder combusting device adopts a structure of combined rotating flow type combustor and unidirectional flow type combustor, thus the advantages of the rotational flow type combustor and the unidirectional flow type combustor are integrated, and the anthracite powder can not only be rapidly ignited but also be sufficiently combusted, therefore, the efficiency of the boiler can be effectively enhanced. The anthracite powder combusting device has the advantages of reasonable design, simple structure and convenient operation, thereby being an anthracite powder combusting device of the utility boiler which can ensure the anthracite powder to be directly burnt out and has more remarkable social efficiency and economic efficiency.

Description

Technical field: [0001] The invention is an anthracite pulverized coal combustion equipment for a power station boiler, which belongs to the innovative technology of the anthracite pulverized coal combustion equipment for a power station boiler. Background technique: [0002] With the continuous rise of fuel oil prices, coal prices are also rising sharply, especially high-quality bituminous coal, the price is ridiculously high. At the same time, the government's environmental protection efforts are also increasing, and the requirements for the transformation of bituminous coal-fired power plant boilers are becoming more and more urgent. Anthracite coal powder has the advantages of low sulfur content, low volatile matter, high calorific value, and less pollutant emission. Can be widely used in power plant boilers. However, the disadvantages of anthracite coal powder are low volatile content, extremely difficult to catch fire, and difficult to burn out. Most of the existing ...

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Problems solved by technology

However, its airflow attenuation speed is relatively fast, the range is short, and the mixing in the later stage is not good, resulting in a decrease in boiler efficiency.

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