公开(公告)号：DE50104252D1

公开(公告)日：2004-11-25

申请号：DE50104252

申请日：2001-12-13

Applicant: BASF AG

Inventor： DIEHL VOLKER ,  MUELLER-ENGEL JOACHIM ,  NESTLER GERHARD

IPC: C07C51/43 ,  C07B63/00 ,  C07C51/235 ,  C07C51/25 ,  C07C51/42 ,  C07C57/05 ,  C07C57/055 ,  C07C57/07

Abstract: In a process for quenching a hot gas mixture comprising (meth)acrylic acid by direct cooling by means of a cooling liquid in a spray cooler, the cooling liquid is atomized in the spray cooler by means of an impingement atomizer.

公开(公告)号：DE50103645D1

公开(公告)日：2004-10-21

申请号：DE50103645

申请日：2001-06-08

Applicant: BASF AG

Inventor： MACHHAMMER OTTO ,  SCHINDLER GOETZ-PETER ,  TENTEN ANDREAS ,  HARTH KLAUS ,  ZEHNER PETER ,  MUELLER-ENGEL JOACHIM ,  ROSOWSKI FRANK ,  BORGMEIER FRIEDER

IPC: C07C27/14 ,  C07B61/00 ,  C07C5/333 ,  C07C11/06 ,  C07C45/33 ,  C07C45/35 ,  C07C47/22 ,  C07C51/215 ,  C07C51/25 ,  C07C57/04 ,  C07C57/05 ,  C07C57/07

Abstract: In a process for the preparation of acrolein or acrylic acid or a mixture thereof from propane, the propane is subjected, in a first reaction stage, to a partial dehydrogenation under heterogeneous catalysis to give propene, of the components contained in the product gas mixture formed in the first reaction stage other than propene and propane at least a portion of the molecular hydrogen present is then separated off from said mixture and the product gas mixture is then used for the preparation of acrolein and/or acrylic acid by gas-phase catalytic propylene oxidation, molecular nitrogen being present for diluting the reaction gas mixture during the propylene oxidation.

公开(公告)号：DE50006621D1

公开(公告)日：2004-07-01

申请号：DE50006621

申请日：2000-10-02

Applicant: BASF AG

Inventor： MUELLER-ENGEL JOACHIM ,  NESTLER GERHARD ,  SCHROEDER JUERGEN

IPC: C07B63/04 ,  C07C51/50 ,  C07C57/075 ,  C07C67/62 ,  C09K15/30

Abstract: Mixtures containing monomers having at least one ethylenically unsaturated group are chemically and/or physically treated in the presence of the reaction products of alkylsuccinic anhydrides and stable N-oxyl radicals having a hydroxyl group.