公开(公告)号：BR8504904A

公开(公告)日：1986-07-22

申请号：BR8504904

申请日：1985-10-04

Applicant: DEGUSSA

Inventor： VOIGT KARL ,  RECK REINHOLD ,  BITTNER FRIEDRICH ,  KLEINSCHMIT PETER

IPC: B61D3/18 ,  C01B17/16

Abstract: The method for the preparation of hydrogen sulfide from its respective elements wherein sulfur and hydrogen are reacted in a diffusion flame in a temperature range of 650 DEG to 1300 DEG C.

公开(公告)号：FR2505858A1

公开(公告)日：1982-11-19

申请号：FR8208177

申请日：1982-05-11

Applicant: DEGUSSA

Inventor： RECK REINHOLD ,  KUHNER GERHARD ,  VOLL MANFRED ,  KLEINSCHMIT PETER

IPC: B01D11/02 ,  B01J8/26 ,  C01B31/02 ,  C09C1/00 ,  C09C1/56

Abstract: A process for removing extractables from carbon blacks in a fluidized bed, wherein low extractable carbon blacks are treated under relatively mild temperature conditions (320 DEG C.) with an oxygen containing gas and high extractable carbon blacks are treated first at 100 DEG -320 DEG C. with steam and then at 200 DEG -500 DEG C. with an oxygen containing gas. A definition of classification in the "low extractable" and "high extractable" categories is given.