Abstract: In the process for recovering carbon disulfide from a steam/carbon disulfide mixture, which is produced when the wastewater from the yarn cutters and the suspension water are treated with steam during the manufacture of viscose rayon, the vapors so produced are cooled by means of a liquid spray, drawn out of the vapor condenser and then condensed. The non-condensable constituents are removed via a trap and the liquefied carbon disulfide is separated from the remaining water. Specifically, the liquid used to spray the vapors is preheated by the thermal energy recovered from the cooling of these vapors, and the hot water thus obtained is then used for other purposes.

Abstract: A continuous flow of cooling liquid is provided to a liquid ring pump conveying a flow of gas, such that the cooling liquid simultaneously acts as the working liquid in the pump. Gas that becomes dissolved in the cooling fluid during pumping is separated therefrom and is returned to join the pump gas inlet flow, and the cooling liquid is thereafter discharged to carry away any heat picked up from the pump. In an aspect of this invention, the degassing of dissolved gas from the exhaust cooling water flow leaving the pump is facilitated by forming a spray in a low-pressure degasser connected to the pump gas inlet.