公开(公告)号：US20180354872A1

公开(公告)日：2018-12-13

申请号：US15780725

申请日：2016-12-02

Applicant: BASF SE ,  Linde AG

Inventor： Jan Pablo JOSCH ,  Ragavendra Prasad BALEGEDDE RAMACHANDRAN ,  Philipp GRUENE ,  Steffan RISSEL ,  Martin GEMBALA ,  Ulrike WENNING ,  Anton WELLENHOFER ,  Christine TOEGEL ,  Hendrik REYNEKE

IPC: C07C5/48 ,  C07C7/00 ,  C07C7/08 ,  C07C7/09 ,  C07C7/11 ,  C07C11/167 ,  B01D3/40 ,  B01J19/00

CPC classification number: C07C5/48 ,  B01D3/40 ,  B01J19/0053 ,  B01J2219/00121 ,  B01J2219/00425 ,  C07C7/005 ,  C07C7/08 ,  C07C7/09 ,  C07C7/11 ,  C07C11/167

Abstract: A) provision of a feed gas stream a comprising n-butenes;B) introduction of the feed gas stream a comprising n-butenes and an oxygen-comprising gas into a dehydrogenation reactor and oxidative dehydrogenation of n-butenes to butadiene;C) cooling and compression of the product gas stream b in at least one cooling stage comprising a quenching column and in a compression stage comprising a compressor, with the product gas stream b being brought into contact with at least one circulated coolant;D) separation of incondensable and low-boiling gas constituents as gas stream d2 from the gas stream c2 by absorption of the C4-hydrocarbons in at least one circulated absorption medium;E) separation of the C4 product stream d1 by extractive distillation using a solvent which is selective for butadiene into a stream e1 comprising butadiene and the selective solvent and a stream e2 comprising n-butenes;F) distillation of the stream e1 comprising butadiene and the selective solvent to give a stream f1 consisting essentially of the selective solvent and a stream f2 comprising butadiene;wherein the measures (i) to (iii) below are carried out (i) avoidance of formation of explosive gas mixtures by monitoring of the oxygen concentration in the oxygen-comprising gas streams fed into the dehydrogenation zone and control of the mass flows of oxygen-comprising gas streams and gas streams comprising hydrocarbons in such a way that no explosive gas mixtures can be formed; (ii) interruption of the introduction of the oxygen-comprising gas mixture into the dehydrogenation zone when a limit value for the oxygen concentration in the dehydrogenation gas mixture is exceeded; (iii) carrying out of the steps A) to F) in apparatuses which are configured so as to be explosion-protected, where liquid-conveying pipes are configured so as to be explosion-protected and gas conduits are configured so as to be detonation-protected.

公开(公告)号：US20140343318A1

公开(公告)日：2014-11-20

申请号：US14277384

申请日：2014-05-14

Applicant: BASF SE

Inventor： Philipp GRUENE ,  Cornelia Katharina DOBNER ,  Marco HARTMANN

IPC: C07C51/347

CPC classification number: C07C51/347 ,  C07C51/353 ,  C07C57/04

Abstract: Process for preparing a vinylidenecarboxylic acid or ester thereof, wherein a reaction gas comprising gaseous formaldehyde, molecular oxygen and an alkycarboxylic acid or ester thereof is brought into contact with a solid catalyst whose active composition comprises a vanadium-phosphorus oxide having an average oxidation state of vanadium of from +4.40 to +5.0 to give a product gas comprising the vinylidenecarboxylic acid or ester thereof.

Abstract translation: 制备亚乙烯基羧酸或其酯的方法，其中将包含气态甲醛，分子氧和其烷基羧酸或其酯的反应气体与活性组合物包含平均氧化态的钒 - 磷氧化物的固体催化剂接触 钒为+4.40〜+ 5.0，得到含有亚乙烯基羧酸或其酯的产物气体。