公开(公告)号：US3876756A

公开(公告)日：1975-04-08

申请号：US1761670

申请日：1970-03-09

Applicant: TAMPELLA OY AB

Inventor： ROMANTSCHUK HAKAN W ,  KIIMALAINEN JORMA

IPC: C01B17/34 ,  C01B17/04 ,  C01B17/06

CPC classification number: C01B17/34

Abstract: In this method hydrogen sulfide and sulfur dioxide are reacted with each other in a water phase at a temperature below 150.degree.C to form a sulfur suspension, and the obtained sulfur is then reacted with a strong sodium sulfide solution. The sulfur formed in the first reaction is fed into a polysulfide reactor in the form of an unpurified suspension without separating the sulfur. However, the sulfur is conducted through a concentrator, in which the sulfur content of the suspension rises over 20 per cent of weight, advantageously to 50-60 per cent of weight, and the clear solution separated from it is returned to the sulphur preparing reactor.