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公开(公告)号：US06749821B1
公开(公告)日：2004-06-15
申请号：US10011353
申请日：2001-12-03
IPC分类号： B01J800
CPC分类号： B01J23/42 , B01J8/025 , B01J8/12 , B01J35/008 , B01J37/16 , B01J2208/00256 , B01J2208/00274 , B01J2219/00006 , B01J2219/0004
摘要： A process for the purification of an inert gas recycled from a polymerization reactor is disclosed, comprising the steps of mixing the gas with oxygen or gas containing oxygen in stoichiometric quantity or in such an excess that the gas at the outlet of the catalyst bed contains no more than 250 ppm of oxygen, circulating the gas through a catalyst bed comprising platinum, which has been subjected to a reducing environment, at temperatures of no more than 300° C. (572° F.) and preferably no more than 250° C. (482° F.) and recycling the gas to the polymerization reactor.
摘要翻译： 公开了一种从聚合反应器中再循环的惰性气体的净化方法，其包括以下步骤：将气体与氧气或含有氧气的化学计量或过量混合，使得催化剂床出口处的气体不含 超过250ppm的氧气，在不超过300℃（572°F）的温度和不超过250℃的温度下将气体循环通过包含已经经历还原环境的铂的催化剂床 （482°F）并将气体再循环到聚合反应器中。
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公开(公告)号：US5200162A
公开(公告)日：1993-04-06
申请号：US862016
申请日：1992-04-01
申请人： Brian W. Riley , John R. Richmond
发明人： Brian W. Riley , John R. Richmond
IPC分类号： B01D53/86
CPC分类号： B01D53/8631 , B01D53/8696 , Y02C20/10
摘要： The exothermicity attending decomposition of N.sub.2 O to nitrogen and oxygen can lead to a multiplicity of process difficulties associated with high process temperatures. An improved process is one where a portion of the exit gases, depleted in N.sub.2 O, is first cooled and then recycle to the N.sub.2 O-decomposition zone. The process is amenable to process control to afford a very stable process largely independent on the particular catalyst used for N.sub.2 O decomposition. Where the N.sub.2 O-containing waste gas stream also contains NO.sub.x, if it often highly desirable to pretreat the stream to remove NO.sub.x prior to the N.sub.2 O-decomposition zone.
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公开(公告)号：US5144094A
公开(公告)日：1992-09-01
申请号：US707312
申请日：1991-08-29
申请人： John R. Richmond , Saad F. Tahir
发明人： John R. Richmond , Saad F. Tahir
IPC分类号： C07C41/09
CPC分类号： C07C41/09
摘要： A composite of tungsten oxide on alumina, zirconia, or titania is active in promoting the dehydration of phenols to afford diaryl ethers if the composite is partially reduced with hydrogen at a temperature between 250.degree. and 450.degree. C. Using such a catalyst diaryl ethers may be prepared by the dehydration of phenols in the temperature range of 350.degree. to 550.degree. C.
摘要翻译： 在氧化铝，氧化锆或二氧化钛上的氧化钨的复合物在促进酚的脱水中是有活性的，如果复合材料在250至450℃的温度下用氢气部分还原，则可提供二芳基醚。使用这样的催化剂二芳基醚可以 通过在350〜550℃的温度范围内脱酚而制备。
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公开(公告)号：US4222853A
公开(公告)日：1980-09-16
申请号：US25450
申请日：1979-03-28
申请人： Claude Scherrer , Marc Durrieu , John R. Richmond
发明人： Claude Scherrer , Marc Durrieu , John R. Richmond
CPC分类号： C23F14/02 , C10G7/10 , C10L1/2437 , Y10S585/95
摘要： The invention relates to anti-fouling agents capable of decreasing the fouling of equipment in contact with a hydrocarbon charge.These agents comprise at least one compound selected from the group consisting of substances having the formula: ##STR1## where R and R' are linear or branched alkyl radicals having between 4 and 12 carbon atoms and where M is a metal atom of Groups IA and IIA of the Periodic Table, withn=1, when the metal M is a metal of Group 1A, andn=2, when the metal M is a metal of Group IIA.An example of such an agent is sodium di-2-ethylhexylsulfosuccinate.
摘要翻译： 本发明涉及能够减少与烃装料接触的设备结垢的防污垢剂。 这些试剂包含至少一种选自具有下式的物质的化合物：其中R和R'是具有4-12个碳原子的直链或支链烷基，其中M是IA族的金属原子， IIA，当金属M是1A族的金属，n = 2时，当金属M是IIA族的金属时，n = 1。 这种试剂的实例是二-2-乙基己基磺基琥珀酸钠。
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