A method for separating liquid sulfur in a carbon disulfide preparation process

Abstract

The invention discloses a method for separating liquid sulfur in the carbon disulfide preparation technology. A cavity internally provided with a steam heating disc is formed, the liquid sulfur continuously flows through the steam heating disc from top to bottom to then flow out from the bottom of the cavity, the steam heating disc heats the liquid sulfur, and carbon disulfide and hydrogen sulfide in the liquid sulfur are gasified; a jacketed pipe is arranged, the gasified carbon disulfide and the gasified hydrogen sulfide are conveyed to an inner pipe body or an outer pipe body of the jacketed pipe, and meanwhile cooling water flows in the outer pipe body or the inner pipe body; the carbon disulfide is liquefied under the effect of the cooling water and is downwards exhausted along the inner pipe body or the outer pipe body, and the hydrogen sulfide is continuously exhausted upwards along the inner pipe body or the outer pipe body. By means of the method, the carbon disulfide and the hydrogen sulfide can be sufficiently separated out from the liquid sulfur, and the separated liquid sulfur and the separated carbon disulfide can be recovered again.

Description

Technical field [0001] The invention relates to the separation of liquid sulfur in the carbon disulfide preparation process, in particular to a method for separating carbon disulfide and hydrogen sulfide in excess liquid sulfur during the non-catalytic reaction of natural gas and sulfur to produce carbon disulfide, and is mainly used to recover liquid sulfur and carbon disulfide in liquid sulfur. Background technique [0002] At present, the non-catalytic reaction of natural gas and sulfur as raw materials to produce carbon disulfide is the most extensive production process. In the carbon disulfide preparation process, natural gas and sulfur enter the carbon disulfide reactor tube, and carbon disulfide is obtained after the reactor, sulfur condenser, sulfur separator, and carbon disulfide condenser. However, during the preparation process, because the reaction temperature of the reactor tube is between 680-720°C, the natural gas is easily cracked into carbon element (CH4→C+H2) an...

AI Technical Summary

Problems solved by technology

This patent is mainly used to separate carbon disulfide and hydrogen sulfide from liquid sulfur, and to recover the separated liquid sulfur, but in essence, natural gas and sulfur are used as raw materials, mainly for the production of carbon disulfide, and the patent does not deal with the separated The carbon disulfide gas is further processed, and the carbon disulfide cannot be effectively recovered, resulting in a large waste of carbon disulfide

In addition, in the separation process of this patent, the liquid sulfur has not been heated and boiled, and the carbon disulfide and hydrogen sulfide in the liquid sulfur cannot be completely released, resulting in poor recovery of liquid sulfur