Crude sulfur dehydration and purification process and device

Abstract

The invention relates to a crude sulfur dehydration and purification process which comprises the following steps: putting crude sulfur into a vacuum distillation furnace, and removing moisture in the crude sulfur to form a crude sulfur solid; mixing the crude sulfur solid with kerosene, and then putting the mixture into a stirring box; connecting a vacuum suction filter, carrying out suction filtration on the solution in the stirring box, filtering out impurities in the stirring box, and reserving elemental sulfur dissolved in kerosene; and conducting cooling and crystallizing to crystallize and separate out elemental sulfur dissolved in kerosene. A central control unit is connected with a liquid level height gauge, a valve arranged on the kerosene pipeline and the stirring device arranged in the stirring box separately, crude sulfur solid and kerosene are stirred at different stirring speeds, and in the stirring process, the change of the liquid level height is detected in real time. The cooling temperature is determined according to the liquid level height and the quality of the impurities by judging whether the detected height and the quality of the filtered impurities meet preset requirements or not, so that the purification efficiency of the crude sulfur in the purification process is improved, and the reaction time is shortened.

Description

technical field [0001] The invention relates to the field of chemical purification, in particular to a crude sulfur dehydration purification process and device. Background technique [0002] With the improvement of people's living standards, people's demand for resource mining has greatly increased, and the coal chemical industry has been vigorously developed. In the process of coal gasification and coking, most of the sulfur in coal exists in the form of hydrogen sulfide in the gas. In the wet desulfurization process of coal gas, hydrogen sulfide is converted into elemental sulfur foam and recovered in the form of sulfur. However, other impurities in the gas, such as coal tar, will partly enter the sulfur, and the obtained sulfur is not high in purity and relatively bright in color. Poor, the sulfur mixed with impurities is crude sulfur. [0003] In actual production, crude sulfur is generally piled up in factories in the form of fixed waste, but with the rapid development...

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Problems solved by technology

[0004] For this reason, the present invention provides a crude sulfur dehydration purification process, which can solve the technical problem of low purification efficiency in the prior art

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