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1. 发明授权

US4419333A Process for removal of nitrogen oxides 失效
标题翻译：氮氧化物去除方法
公开(公告)号：US4419333A
公开(公告)日：1983-12-06
申请号：US398929
申请日：1982-07-16
申请人： Josef Reus , Hans Wewer , Hofmann Jurgen
发明人： Josef Reus , Hans Wewer , Hofmann Jurgen
IPC分类号： B01D53/56 , C01B21/00
CPC分类号： B01D53/56
摘要： To remove nitrous gases from gas mixtures there is needed a process and apparatus by which they can be eliminated quickly, without formation of secondary waste and as cheaply as possible. This is done by scrubbing the nitrous gases out of the gaseous mixture with 15-50% nitric acid solution and treating this solution additionally with gaseous oxygen, especially atmospheric oxygen.
摘要翻译：为了从气体混合物中除去亚硝基气体，需要一种方法和设备，可以快速消除它们，而不会形成二次废物并且尽可能廉价。这是通过用15-50％硝酸溶液洗涤气态混合物中的亚硝基气体并用气态氧气，特别是大气氧气另外处理该溶液来完成的。

2. 发明授权

US4254246A Column system process for polyester plants 失效
标题翻译：聚酯工厂的柱系统工艺
公开(公告)号：US4254246A
公开(公告)日：1981-03-03
申请号：US23831
申请日：1979-03-26
申请人： Ovidiu Dicoi , Hans Wewer
发明人： Ovidiu Dicoi , Hans Wewer
IPC分类号： C07C29/80 , C07C69/82
CPC分类号： C07C29/80 , Y10S203/06
摘要： A new process for use with continuously operated plants for the production of polyester polymers suitable for producing fibers, bottles and film, by reacting ethylene glycol and terephthalic acid in the presence of a catalyst so that the vapour by-products from the esterification, prepolycondensation and polycondensation stages are continuously rectified in two in-line columns yielding ethylene glycol of high purity (99.85%) which is returned to the process, waste water with 400 ppm ethylene glycol, and a heavy fraction containing oligomers, diethylene glycol, etc.Moreover, an improvement in the quality of the esterified product is attained as it contains less than 0.6% diethylene glycol without the use of diisopropylamine, a poisonous additive.
摘要翻译：一种用于生产适用于生产纤维，瓶和薄膜的聚酯聚合物的连续操作设备的新方法，通过使乙二醇和对苯二甲酸在催化剂存在下反应，使得来自酯化，预缩聚的蒸气副产物和缩聚阶段在两个直列柱中连续精馏，得到高纯度（99.85％）的乙二醇，并返回该方法，含有400ppm乙二醇的废水和含低聚物，二甘醇等的重馏分。此外，得到酯化产物质量的改善，因为它含有少于0.6％的二甘醇，而不使用二异丙胺（一种有毒添加剂）。

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