Method and device for refining sulfur from desulfurized sulfur paste

Abstract

The invention discloses a method and a device for refining sulfur from desulfurized sulfur paste. A sulfur paste pulping tank is connected with wet desulfurized sulfur paste through a first pipeline, and is communicated with a sulfur paste concentration filter through a second pipeline; the sulfur slurry concentration filter is connected and communicated with the sulfur slurry buffer tank through a third pipeline, is connected and communicated with the vacuum evaporation crystallization tank through a tenth pipeline, and is connected and communicated with the tail gas washing tower through a twentieth pipeline; slurry in the sulfur slurry buffer tank is communicated with the sulfur melting kettle through a fourth pipeline; the sulfur melting and sublimation combined device for refining sulfur from sulfur paste is adopted, the sulfur product obtained by refining and recycling the sulfur paste reaches the superior grade of industrial sulfur, and meanwhile, the whole device for refining sulfur from sulfur paste is automatic, continuous and free of secondary pollution; the method is particularly suitable for treating a large amount of sulfur paste as a byproduct of a wet oxidation desulfurization device in the fields of coal coking gas, petrochemical gas and the like.

Description

technical field [0001] The invention relates to a method and a device for refining sulfur, in particular to a method and a device for refining sulfur from desulfurized sulfur paste, and belongs to the technical field of chemical industry. Background technique [0002] At present, in order to improve the quality of products, domestic petrochemical, metallurgical and coking enterprises must desulfurize raw materials. Generally, chemical enterprises with a latent sulfur content of less than 30t / d in raw materials are equipped with wet oxidation desulfurization equipment, and the complex iron wet oxidation desulfurization method gradually replaces the traditional HPF (hydroquinone, PDS-phthalocyanine cobalt sulfonate) salt, FeSO 4 Composited catalyst) desulfurization method has become the mainstream desulfurization process. Due to complex iron wet oxidation desulfurization method on H 2 The highest reaction selectivity of S is more than 99%, so compared with the traditional H...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the sulfur extraction device in the prior art cannot realize the deep removal of oil, water, gas, salt and slag that are unexpectedly produced in the desulfurization sulfur paste, so that the prepared sulfur product contains impurities High unqualified problems, and then provide a refined sulfur device to obtain high-quality sulfur from desulfurized sulfur paste

Images