公开(公告)号：CA1273916A

公开(公告)日：1990-09-11

申请号：CA479477

申请日：1985-04-18

Applicant: BASF AG

Inventor： DIERKE RUEDIGER ,  SCHLICHTHAERLE GOTTFRIED ,  SCHUCHART PETER ,  SCHWEITZER ARMIN

IPC: C01B3/32 ,  C01B3/36 ,  F16L53/00 ,  F28D7/10 ,  F28F13/06 ,  B01J8/06

Abstract: Heat is removed from, or supplied to, a vertical pipe of any cross-section, whose internal temperature is above or below the ambient temperature and whose wall temperature must neither exceed nor fall below a predetermined temperature range, by a method in which, in order to maintain the predetermined temperature range, the pipe is provided with a coaxial sheath and gas is passed through the gap between the pipe and the sheath.