Stirring push-pressing type multistage sodium sulfide filtering device

Abstract

The invention discloses a stirring push-pressing type multistage sodium sulfide filtering device, a sodium sulfide solution in an annular material hopper is pumped to a middle zone of a filter tank by a water pump driven by a circulation motor, an orthogonal shaft speed reducer drives a driving gear meshed with a driven gear to rotate so as to drive a stirring blade to rotate at a high speed, and under the effect of a pressure produced by rotation of the stirring blade, the sodium sulfide solution to be filtered successively passes through a front slag blocking plate and a rear slag blocking plate, so that a two-stage filtering process is completed, wherein after the sodium sulfide solution to be filtered passes through the front slag blocking plate, slag residue backrush in the rear slag blocking plate can be prevented due to a branched slope section of the filter tank, and the filtration process of sodium sulfide is completed; then the sodium sulfide solution flows into the annular material hopper, if necessary, the sodium sulfide solution may be pumped again by the circulation motor for secondary purification. The stirring push-pressing type multistage sodium sulfide filtering device can quickly filter and remove impurities of the sodium sulfide solution, can continuously improve the filtering effect, has high work efficiency, and can reduce operator's physical output.

Description

technical field [0001] The invention relates to sodium sulfide filtering processing equipment. Background technique [0002] Sodium sulfide is also called smelly alkali, smelly soda, yellow alkali, and alkali sulfide. Sodium sulfide is an inorganic compound, and pure sodium sulfide is a colorless crystalline powder; it has strong moisture absorption and is easily soluble in water; the aqueous solution is strongly alkaline; it will cause burns when it touches the skin and hair; therefore, sulfur [0003] Sodium chloride is commonly known as alkali sulfide. [0004] At present, there are mainly the following methods for producing sodium sulfide in China: ① coal powder reduction mirabilite method; ② sodium hydroxide absorption hydrogen sulfide method; ③ sodium sulfate and barium sulfide double decomposition method; ④ hydrogen reduction sodium sulfate method. Although the absorption method has absolute advantages in terms of energy consumption and CO2 emissions, the source of ...

AI Technical Summary

Problems solved by technology

The structure of the device is complex, there are many impurity removal links, and the effect is poor

[0008] To sum up, the existing sodium sulfide solution impurity removal methods mainly have defects such as too complicated structure and principle, insufficient consideration of details, serious secondary pollution leading to repeated filtration, excessive labor intensity of workers and limited application range, etc.

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