Coal-fired flue gas pollutant ultralow emission system with rotary type GGH

Abstract

The invention relates to a coal-fired flue gas pollutant ultralow emission system with a rotary type GGH. The system comprises a denitrating reactor, an electrical dust precipitator, a booster fan, a desulfurizing tower, a wet-type electrostatic dust precipitator and a chimney which are connected in sequence, and the system further comprises the rotary type GGH. The rotary type GGH comprises a heat absorption segment of the rotary type GGH and a heat emission segment of the rotary type GGH, wherein the heat absorption segment of the rotary type GGH is arranged between the electrical dust precipitator and the booster fan, and the heat emission segment of the rotary type GGH is arranged between the wet-type electrostatic dust precipitator and the chimney. The heat absorption segment of the rotary type GGH is arranged in front of the booster fan, so that pressure in a purified flue gas side is negative, and by means of the GGH arrangement, the emission concentration of pollutant can be prevented from raising due to the fact that raw flue gas is leaked out to purified flue gas. By treating coal-fired flue gas, the emission concentration of NO[x] is lower than 50 mg / m<3>, the emission concentration of SO[2] is lower than 35 mg / m<3>, the emission concentration of dust is lower than 5 mg / m<3>, and the emission concentration of mercury is lower than 3 micrograms / m<3>.

Description

technical field [0001] The invention belongs to the technical field of coal-fired flue gas pollutant removal, and in particular relates to an ultra-low discharge system of coal-fired flue gas pollutants with a rotary GGH. Background technique [0002] In recent years, China's atmospheric problems have become prominent. In order to effectively improve air quality and achieve win-win environmental, economic and social benefits, the country's requirements for the reduction of major pollutants have been continuously upgraded: [0003] In February 2013, the Ministry of Environmental Protection promulgated the "Announcement on the Implementation of Special Emission Limits of Air Pollutants", implementing special emission limits of air pollutants for six major industries including thermal power; [0004] In September 2013, the State Council issued the "Air Pollution Prevention and Control Action Plan" known as the "Ten Measures of the Air Country", prohibiting new coal-fired power ...

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Problems solved by technology

[0012] In order to overcome the shortcomings of the existing technology, the present invention provides an ultra-low emission system for coal-fired flue gas pollutants with a rotary GGH, and proposes a new arrangement of the rotary GGH. Through the innovative arrangement of the GGH way, which solves the shortcomings of the existing rotary GGH air leakage rate in the power plant is too high

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