Method and device for removing mercury from high-temperature flue gas of fire coal

Abstract

The invention discloses a method and device for removing mercury from high-temperature flue gas of fire coal. According to the method, an electric rotating valve is utilized for controlling a flue gas mercury removal agent to be uniformly put into a mercury removal reactor, high-temperature flue gas enters the mercury removal reactor through an air inflow guiding device, and the high-temperature flue gas and the flue gas mercury removal agent form a convection current in the mercury removal reactor; and an intermittent vibration type vibrator is arranged on the outer side of the mercury removal reactor and is mainly used for lamellarly and uniformly decreasing the flue gas mercury removal agent, shaking off the flue gas mercury removal agent on the air inflow guiding device and a circular ring exhausting device and realizing adequate reaction between the high-temperature flue gas and the flue gas mercury removal agent, and after mercury is removed, the flue gas is guided out by the circular ring exhausting device, so that the mercury removal of the high-temperature flue gas is realized. The device has the beneficial effects that the continuous adsorption is realized, the uniform air supply and the lamellar adsorption reaction are realized, the device can adapt to a high temperature over 500 DEG C, inflow and outflow are uniformly guided, the mercury removal efficiency is high, and the use efficiency of the mercury removal agent is high.

Description

technical field [0001] The invention relates to the technical field of dust removal and mercury removal, in particular to a method and device for removing mercury from coal-fired high-temperature flue gas. Background technique [0002] Mercury is a highly toxic substance that has serious effects on the environment and the human body. The burning of coal in human activities will cause the mercury in the coal to volatilize due to heat and exist in the flue gas in the form of mercury vapor. my country is a country with large coal reserves and large consumption. Coal burning causes huge mercury emissions, which is easy to cause environmental pollution, and we must find a way to solve it. [0003] Studies have shown that the mercury removal effect of coal before combustion is poor, and more attention should be paid to the removal of mercury from flue gas after combustion. At present, two methods of traditional dust removal technology and equipment and adsorbent adsorption are w...

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Problems solved by technology

Various adsorbents are still in the stage of l

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