公开(公告)号：DE3116557A1

公开(公告)日：1982-11-11

申请号：DE3116557

申请日：1981-04-25

Applicant: BASF AG

Inventor： EIGENBERGER GERHART DIPL ING D

IPC: B01F5/06 ,  B01J19/30 ,  B01F3/08 ,  B01J8/06

Abstract: 1. A device for inverting the flow of, and mixing, flowing materials in a pipe of any desired cross-section, comprising at least one mixing element consisting of guide surfaces, wherein the sector-shaped guide surfaces (2) fill out the cross-section of the pipe (1), it being possible to provide gaps between the wall of the pipe and the guide surfaces, and/or a free flow cross-section in the axial region, and wherein each guide surface (2) is a section of the peripheral surface of a cone or a pyramid, the tip of which lies on the axis of the pipe (1), the generatrix of the peripheral surface forming with the pipe axis an angle of incidence of 10 degrees to 70 degrees which remains constant or continuously changes in the radial and circumferential directions, and guide surfaces (8), which point outwardly in a circumferential direction, alternating with inwardly pointing guide surfaces (9), so that approximately one half of the pipe cross-section is filled out by outwardly pointing guide surfaces (8), and the other half is filled out by inwardly pointing guide surfaces (9).

公开(公告)号：DE3049181A1

公开(公告)日：1982-07-29

申请号：DE3049181

申请日：1980-12-24

Applicant: BASF AG

Inventor： EIGENBERGER GERHART DIPL ING D ,  KUERTEN HERIBERT DIPL ING DR ,  ZEHNER PETER DIPL ING DR ,  LACKNER BRUNO ING GRAD ,  WITTWER ARNOLD DIPL CHEM DR

IPC: B01J8/00 ,  B01J8/06 ,  C10G49/00

Abstract: In exothermic reactions between liq. and gases on catalytically acting fixed bed fillings in tubular reactors, where reaction enthalpy is mostly removed by the gas stream, the bed of catalyst or of material contg. catalyst is interrupted by layers of material with no catalytic effect. The catalytically neutral material may be the catalyst carrier itself, but is pref. Pall rings, Raschig rings or saddle bodies, so dimensioned that catalyst cannot penetrate. A filling with 50cm. layer of Pall rings, each 15 mm long, alternating with 1 metre layers of catalyst kept the temp. of a known reaction below 300 deg.C, whereas over 500 deg.C had been recorded in the uninterrupted catalyst body. Useful for high pressure hydrogenation with gas fed through external coolers, and reduces the incidence of uncontrolled temp. rises which can damage the catalyst.