公开(公告)号：US20150343414A1

公开(公告)日：2015-12-03

申请号：US14722666

申请日：2015-05-27

Applicant: Bayer MaterialScience AG

Inventor： Ralph WEBER ,  Martin EHRIG ,  Johannes LEONHÄUSER ,  Dirk WEIßENBERG

IPC: B01J19/24 ,  B01D53/14 ,  B01D47/14 ,  C01B7/07

CPC classification number: B01J19/24 ,  B01D47/14 ,  B01D53/1406 ,  B01D53/1431 ,  B01D53/1456 ,  B01D53/1493 ,  B01D2252/103 ,  B01J2219/24 ,  C01B7/04 ,  C01B7/0706 ,  C01B7/0737 ,  C01B7/0743 ,  Y02P20/228

Abstract: A method for processing hydrogen chloride from isocyanate preparation comprises the steps: a) providing hydrogen chloride; b) purifying the hydrogen chloride provided; and furthermore step c) or step d): c) bringing the purified hydrogen chloride into contact with water and/or with hydrochloric acid which is not saturated with respect to uptake of hydrogen chloride d) further processing the purified hydrogen chloride to chlorine by partial oxidation The hydrogen chloride provided in step a) contains organic and/or nitrogen-containing impurities and in step b) the purification is carried out by bringing hydrogen chloride into contact with hydrochloric acid which is saturated to the extent of 90% with respect to uptake of hydrogen chloride at least in a first gas scrubber (10) and circulating this hydrochloric acid at least partially through the first gas scrubber (10).

Abstract translation: 从异氰酸酯制备方法处理氯化氢的方法包括以下步骤：a）提供氯化氢; b）纯化提供的氯化氢; 以及步骤c）或步骤d）：c）使纯化的氯化氢与水和/或与盐酸相接触，对于氯化氢的摄取而言不饱和d）通过部分方法将纯化的氯化氢进一步加工成氯 氧化步骤a）中提供的氯化氢含有有机和/或含氮杂质，并且在步骤b）中，通过使氯化氢与饱和至相对于吸收的90％程度的盐酸接触来进行纯化 至少在第一气体洗涤器（10）中并使该盐酸至少部分地循环通过第一气体洗涤器（10）。