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公开(公告)号:US5262145A
公开(公告)日:1993-11-16
申请号:US847126
申请日:1992-03-06
CPC分类号: C01C3/0208
摘要: The manufacture of hydrogen cyanide by the catalytic reaction of air/oxygen, ammonia and a hydrocarbon gas employing an improved catalytic reaction zone comprising a sequential array of layers/piles in which the surface density of the catalyst in layers/piles decreases from the entrance to the exit of the catalytic reaction zone.
摘要翻译: 通过使用改进的催化反应区域的空气/氧气,氨气和烃气体的催化反应来制造氰化氢,所述改进的催化反应区域包括顺序排列的层/堆,其中层/堆中的催化剂的表面密度从入口到 催化反应区的出口。
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公开(公告)号:US4490347A
公开(公告)日:1984-12-25
申请号:US464429
申请日:1983-02-07
申请人: Peter G. Gelblum
发明人: Peter G. Gelblum
CPC分类号: C01B17/90 , C01B17/50 , Y02P20/129
摘要: Process for regenerating spent acid is improved by using oxygen-enriched air for combustion, recycling stack gases, and preheating spent acid and air fed to the furnace.
摘要翻译: 通过使用富氧空气进行燃烧,回收烟道气体,以及预热耗尽的酸和进料到炉中的空气来改善废酸再生方法。
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公开(公告)号:US5209825A
公开(公告)日:1993-05-11
申请号:US691155
申请日:1991-04-24
摘要: A distillation process for the preparation of purified concentrated BDO.High boiling impurities, including color formers, precursors of color formers and tar formers are removed from the BDO early in the process and under mild conditions.
摘要翻译: 用于制备纯化浓缩BDO的蒸馏方法。 高沸点杂质,包括成色剂,成色剂和焦油形成剂的前体在该过程的早期和温和的条件下从BDO中除去。
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