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1.发明授权Process for preparing styrene by dehydrogenation of ethylbenzene and reaction system which can be used for the process 有权一种用于通过乙苯和系统的脱氢制备苯乙烯方法可以在本方法中可以使用
公开(公告)号：EP1209140B1
公开(公告)日：2004-06-02
申请号：EP01204467.3
申请日：2001-11-21
CPC分类号： B01J8/065 , B01F5/06 , B01J8/0292 , B01J8/0453 , B01J2208/00061 , B01J2208/00212 , B01J2208/00548 , B01J2208/0084 , B01J2208/00849 , C07C5/333 , Y10S585/921 , Y10S585/922 , Y10S585/923 , Y10S585/924 , C07C15/46
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2.发明公开Method and apparatus for the improved purification of vinyl aromatic compounds 审中-公开Methode und Apparatfürdie Reinigung von vinylaromatischen Verbindungen
公开(公告)号：EP1129753A1
公开(公告)日：2001-09-05
申请号：EP01200677.1
申请日：2001-02-22
CPC分类号： B01D3/322 , B01D3/141 , C07C7/05 , Y10S203/09 , C07C15/46
摘要： The present invention is directed to an apparatus and method for the distillation of a readily polymerizable vinyl aromatic compound employing a polymerization inhibitor. The vinyl aromatic compound is subjected to distillation in at least one fractionation column having at least one reboiler for maintaining the bottoms of said column at a proper temperature. The reboiler comprises a heating section and a vapor phase section. The bottoms fraction from the fractionation column is cycled to the reboiler and subjected to heat to vaporize at least a portion of the bottoms fraction to form a vapor phase in the vapor section. A slip stream of the bottoms fraction is introduced to the vapor phase section of the reboiler. The slipstream contains polymerization inhibitor that had been added to the process at the fractionation column. The invention reduces fouling at the reboilers. The slipstream is optionally introduced to the reboiler using one or more spray nozzles. The polymerization inhibitor is added to the fractionation column in sufficient amounts to maintain a concentration of at least 400 parts per million by weight in the bottoms fraction.
摘要翻译： 本发明涉及一种使用聚合抑制剂蒸馏容易聚合的乙烯基芳族化合物的装置和方法。 乙烯基芳族化合物在至少一个具有至少一个再沸器的分馏塔中进行蒸馏，用于将塔的底部保持在适当的温度。 再沸器包括加热段和气相段。 来自分馏塔的塔底馏分循环到再沸器并进行加热以蒸发至少一部分塔底馏分以在蒸汽段中形成气相。 底部馏分的滑流引入再沸器的气相部分。 滑流包含已经在分馏塔中加入到该方法中的阻聚剂。 本发明减少了再沸器的结垢。 滑流可选地使用一个或多个喷嘴引入再沸器。 将聚合抑制剂以足够的量加入到分馏塔中，以保持底部馏分中至少400重量ppm的浓度。
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公开(公告)号：EP1334957A1
公开(公告)日：2003-08-13
申请号：EP03075393.3
申请日：2003-02-11
CPC分类号： C07C5/333 , B01F5/06 , B01J8/0292 , B01J8/0453 , B01J8/065 , B01J2208/00061 , B01J2208/00212 , B01J2208/00548 , B01J2208/0084 , B01J2208/00849 , Y10S585/922 , Y10S585/923 , Y10S585/924 , C07C15/44 , C07C15/46
摘要： Process for the catalytic dehydrogenation of diethylbenzene or C 3 alkyl aromatic in which a fecdstock containing the alkyl aromatic and steam is supplied into the inlet of a tubular reactor containing a dehydrogenation catalyst. Within the reactor, the feedstock flows through at least a portion of the reactor along a spiral flow path extending longitudinally of the reactor. The resulting vinyl aromatic product is then recovered from a downstream or outlet section of the reactor. At least a portion of the spiral flow path contains a particulate dehydrogenation catalyst. The spiral flow path may extend throughout a major portion of the elongated tubular reactor and may contain a particulate dehydrogenation catalyst in a substantial portion there.
摘要翻译： 二乙基苯或C 3烷基芳族化合物的催化脱氢方法，其中将含有烷基芳族化合物和蒸汽的食品供应到含有脱氢催化剂的管式反应器的入口中。 在反应器内，原料沿着反应器纵向延伸的螺旋流动路径流过反应器的至少一部分。 然后从反应器的下游或出口部分回收得到的乙烯基芳族化合物。 螺旋流路的至少一部分含有颗粒脱氢催化剂。 螺旋流动路径可以延伸穿过细长管式反应器的主要部分，并且可以在其中大部分含有颗粒状脱氢催化剂。
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4.发明公开Process for preparing styrene by dehydrogenation of ethylbenzene and reaction system which can be used for the process 有权一种用于通过乙苯和系统的脱氢制备苯乙烯方法可以在本方法中可以使用
公开(公告)号：EP1209140A1
公开(公告)日：2002-05-29
申请号：EP01204467.3
申请日：2001-11-21
CPC分类号： B01J8/065 , B01F5/06 , B01J8/0292 , B01J8/0453 , B01J2208/00061 , B01J2208/00212 , B01J2208/00548 , B01J2208/0084 , B01J2208/00849 , C07C5/333 , Y10S585/921 , Y10S585/922 , Y10S585/923 , Y10S585/924 , C07C15/46
摘要： Process for the catalytic dehydrogenation of ethylbenzene in which a feedstock containing ethylbenzene and steam is supplied into the inlet of a tubular reactor containing a dehydrogenation catalyst. Within the reactor, the feedstock flows through at least a portion of the reactor along a spiral flow path extending longitudinally of the reactor. The resulting styrene product is then recovered from a downstream or outlet section of the reactor. The spiral flow path through which the feedstock is passed is located at least adjacent the inlet side of the reactor and at least a portion of the spiral flow path contains a particulate dehydrogenation catalyst. The spiral flow path may extend throughout a major portion of the elongated tubular reactor and may contain a particulate dehydrogenation catalyst in a substantial portion there. The feedstock containing ethylbenzene and steam is supplied into a plurality of tubular reactors located within the interior of a dehydrogenation reactor vessel and is arranged in a parallel relationship in which the tubular reactors are spaced laterally from one another and from the interior wall of the reaction vessel. The tubular reactors each have a mixing stage comprising a longitudinally-extending helical baffle providing a spiral flow path. The interior of the reaction vessel is heated by a heating system in order to provide an external source of heat which varies along the lengths of the tubular reactors.
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