公开(公告)号：DE3233445A1

公开(公告)日：1984-03-15

申请号：DE3233445

申请日：1982-09-09

Applicant: BASF AG

Inventor： WEBER GEORG ,  KUERTEN HERIBERT DR ,  SCHULZ RUDI ,  PUESTEL HUBERT ,  SCHUCH GUNTER DR ,  ZEHNER PETER DR

IPC: F16K27/02 ,  F16K47/16 ,  B05B1/00 ,  F15D1/08

Abstract: Expansion valve, consisting of a valve body with an expansion nozzle and a valve tip and of a high-pressure vessel attached to the valve body for the expansion of hydrogenation residues of coal and heavy-oil hydrogenation, in which - the expansion nozzle and the valve tip form a channel narrowing in the expansion direction, - the expansion nozzle has a rounded inlet in the expansion direction, - the smallest diameter of the expansion nozzle is 0.3 to 0.6 times the nominal valve width, and - arranged immediately after the smallest diameter of the expansion nozzle is a conical widening, the total aperture angle of which is > 30 DEG and