Treatment device for fume generated in conversion process of vanadium pentoxide by ammonium metavanadate

Abstract

The invention discloses a treatment device for fume generated in conversion process of vanadium pentoxide by ammonium metavanadate. The device is characterized by comprising a first-stage spraying temperature reduction device, a second-stage sulphuric acid spraying device, a third-stage sulphuric acid spraying device, a fourth stage alkali solution spraying device, a power supply control box, a diluted sulphuric acid tank, a alkali solution tank and a tap water inlet pipe, wherein the first-stage spraying temperature reduction device, the second-stage sulphuric acid spraying device, the third-stage sulphuric acid spraying device and the fourth stage alkali solution spraying device are sequentially connected, an air inlet is formed in one side of the first-stage spraying temperature reduction device, a first-stage corrosion preventing plastic self-absorbing pump is arranged on the other side, and an electric thermal coupling probe which is electrically connected with the power supply control box is arranged in the first-stage spraying temperature reduction device. The treatment device has the advantages that fume generated in the process in which the vanadium pentoxide is convertedby the ammonium metavanadate can be effectively treated and recycled to be reused, the atmospheric pollution can be effectively reduced, the influence on the respiration of a human body is avoided, the economical benefits are created, wastes are turned into treasures, dual-purpose is achieved, and the treatment device is suitable for popularization.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to a flue gas treatment device for converting ammonium metavanadate into vanadium pentoxide to generate flue gas. Background technique [0002] Ammonium metavanadate (NH 4 VO 3 ) is heated and decomposed to produce vanadium pentoxide (V 2 o 5 ) produces ammonia gas (NH 3 ), ammonium chloride (NH 3 CL) flue gas, because ammonia gas and ammonium chloride flue gas are highly irritating, which will affect human breathing and pollute the atmosphere. The chemical reaction formula of ammonium metavanadate heating to generate vanadium pentoxide is as follows: And existing ammonium metavanadate production method mostly is ammonium chloride flocculation precipitation method, converts vanadium pentoxide content calculation method (general content is about 60%) by existing ammonium metavanadate (when not thermally decomposed), and Using the molecular formula calculation meth...

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Problems solved by technology

The chemical reaction formula of ammonium metavanadate heating to generate vanadium pentoxide is as follows: And existing ammonium metavanadate production method mostly is ammonium chloride flocculation precipitation method, converts vanadium pentoxide content calculation method (general content is about 60%) by existing ammonium metavanadate (when not thermally decomposed), and Using the molecular formula calculation method, the product contains a certain amount of water and ammonium chloride

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