Flue-gas denitration pretreatment device for power plant utilizing agriculture and forestry waste

Abstract

The invention provides a flue-gas denitration pretreatment device for a power plant utilizing agriculture and forestry waste. The flue-gas denitration pretreatment device comprises a high-temperatureflue, wherein a rotary screen is mounted in the interior of the high-temperature flue; the rotary screen comprises a temperature-resistant rotating shaft, a temperature-resistant bearing bracket and barrel-shaped screen nets; the inner wall of the high-temperature flue is provided with a portal-shaped sealing frame made from a flexible graphite material; the front side and rear side of the rotaryscreen are provided with arc-shaped front striker plate and rear striker plate, wherein the widths of the front striker plate and rear striker plate are more than the space between two barrel-shaped screen nets, respectively; the lower wall surface of the high-temperature flue is provided with an ash bucket; the ash bucket is located below the rotary screen; an outlet of the ash bucket is providedwith a twin-stage heavy hammer type flap gate. The flue-gas denitration pretreatment device for the power plant utilizing the agriculture and forestry waste, which is provided by the invention, is used for realizing intercepting and cleaning large-particle flying ash from a boiler through the way of arranging a mechanical rotational screen nets in a high-temperature and high-dust environment, stably runs in a high-temperature environment, and is obvious in interception effect.

Description

technical field [0001] The invention relates to a denitration flue gas pretreatment device of an agricultural and forestry waste power plant, and belongs to the technical field of denitrification flue gas pretreatment. Background technique [0002] Agricultural and forestry waste fuel has the characteristics of renewability, low pollution, and abundant resources. The agricultural and forestry waste power generation industry has the attribute of "environmental protection, benefiting farmers and green energy", which is in line with the national concept of green environmental protection and circular development, and has a broad market prospect. Since 2006, my country has put into operation 302 agricultural and forestry waste power generation projects under construction, with an installed capacity of nearly 9,000MW. The agricultural and forestry waste power generation industry will be a strategic emerging industry for the treatment and utilization of agricultural and forestry was...

AI Technical Summary

Problems solved by technology

At present, there are many other physical interception methods, but for the high-temperature and high-dust environment such as the tail flue of the boiler, many conventional technologies cannot directly deal with it and cannot meet the needs of continuous production

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