Plasma desulfurization device and method

Abstract

The invention belongs to the technical field of flue gas treatment, and particularly relates to a plasma desulfurization device and method. The plasma desulfurization device comprises an air inlet, anair outlet and a reaction container, wherein the reaction container is made of ceramic, the outer ring of the reaction container is provided with a wire, the wire is connected with a current as an alternating current, the reaction container is filled with a filler, and the filler is a mixture of sponge iron and quartz sand the plasma desulfurization method mainly comprises the following steps: agas source is introduced, the current is connected, hydrogen sulfide is removed and the gas source is discharged out, wherein when the hydrogen sulfide is removed, the hydrogen sulfide is subjected toionization decomposition under high-frequency oscillation of electromagnetic waves, and the hydrogen sulfide which is partially non-ionized into plasma reacts with the heated sponge iron to generateferric sulfide. The desulfurization device is simple in structure, is combined with a plasma desulfurization and precipitation desulfurization method for desulfurization, and is high in desulfurization efficiency, simple in equipment maintenance, long in service life and low in energy consumption.

Description

Technical field [0001] The patent of the invention belongs to the technical field of flue gas treatment, and specifically relates to a plasma desulfurization device and method. Background technique [0002] Hydrogen sulfide is a highly toxic, foul-smelling colorless gas, which not only corrodes the metal layer material, but also harms human health and pollutes the environment. Therefore, it must be treated in a harmless manner. At present, the commonly used method for the harmless treatment of hydrogen sulfide is the Claus method, that is, part of the hydrogen sulfide is burned to generate sulfur dioxide, and the sulfur dioxide reacts with hydrogen sulfide to generate elemental sulfur and water vapor. Although this method realizes the harmless treatment of hydrogen sulfide, from the point of view of atomic economy, this treatment method recovers low-value-added elemental sulfur, but converts precious hydrogen into water. With the increase in the processing volume of sour crude o...

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Problems solved by technology

[0004] In existing plasma desulfurization devices, pulse current is often used to generate electromagnetic field, which is widely used because of its simple structure and high energy density. However, its high energy consumption, difficult control of pulse current, and unstable electromagnetic field hinder the development of plasma desulfurization technology.

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