公开(公告)号：US3880985A

公开(公告)日：1975-04-29

申请号：US25859872

申请日：1972-06-01

Applicant: BAYER AG

Inventor： HAESELER HARKE ,  DORN LUDWIG ,  MOLLER WILHELM ,  WOKULAT JORGEN ,  RUBSAM FRANZ ,  HEINZE GERHARD

IPC: C01B17/765 ,  C01B17/77 ,  C01B17/68

CPC classification number: C01B17/7655 ,  C01B17/77

Abstract: Sulphur trioxide is produced from SO2 containing gases in a multi-stage catalytic conversion plant employing intermediate absorption. In the first stage the catalyst is maintained as a fluidised bed and the SO2 containing gas is introduced into the bed at a temperature of up to about 300*C. The conversion in said fluidised bed is at least 60%. High overall conversions, with improved heat economy, are obtained.

Abstract translation: 在使用中等吸收的多级催化转化装置中，由含SO2的气体产生三氧化硫。 在第一阶段，将催化剂保持为流化床，并将含SO 2的气体在高达约300℃的温度下引入床中。所述流化床中的转化率至少为60％。 获得了具有改善的热经济性的高整体转化率。