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61.发明公开
公开(公告)号：EP1579149A2
公开(公告)日：2005-09-28
申请号：EP03814177.6
申请日：2003-12-18
发明人： BUTLER, James, R.
IPC分类号： F22B1/00
CPC分类号： F22B7/00 , F22B31/00 , F23C13/00 , F23C99/00 , F23C2900/99001 , Y02E20/342
摘要： Disclosed herein is a method for generating steam, comprising oxidizing a fuel to generate heat via a flameless reaction; and using the heat generated via the reaction to convert water to steam. In an embodiment, the amount of NOx present is flue gas from the reaction is less than about 10 PPMv. In an embodiment, the reaction temperature is less than about 2600 °F (1430 °C). In an embodiment, the method further comprises controlling the reaction temperature to minimize the formation of NOx. In an embodiment, controlling the reaction temperature further comprises sensing one or more process variables and adjusting a process controller in response to the sensed process variable. Also disclosed herein is a steam generator comprising a reaction zone wherein fuel is oxidized to generate heat via a flameless reaction and a heasting zone wherein water is converted to steam via heat from the reaction.
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62.发明公开Method for transitioning between Ziegler-Natta and metallocene catalysts in a bulk loop reactor for the production of polypropylene 有权在环流反应器用于生产聚丙烯的齐格勒 - 纳塔催化剂和茂金属催化剂之间的转换方法
公开(公告)号：EP1526143A3
公开(公告)日：2005-09-28
申请号：EP05075141.1
申请日：2002-11-26
发明人： Tharappel, Ronald , Oreins, Renaud , Gauthier, William , Attoe, David , McGovern, Kevin , Messiaen, Michel , Rauscher, David , Hortmann, Kai , Daumerie, Michel
CPC分类号： C08F10/06 , B01J4/002 , B01J19/1818 , B01J19/1837 , B01J2219/00006 , B01J2219/00094 , C08F4/6592 , C08F110/06 , C08F2410/05 , Y10S526/943 , C08F2/00 , C08F2/005 , C08F2/001
摘要： The present invention relates to propylene polymerization process in a bulk loop reactor, and particularly to propylene polymerization process for polymerizing commercial quantities of polypropylene in a bulk loop reactor by sequentially introducing Ziegler-Natta and metallocene catalyst systems into the bulk loop reactor. In one embodiment, separate catalyst mixing systems are used to introduce a quantity of metallocene catalyst and Ziegler-Natta catalyst into the bulk loop reactor. The frequency rate at which the quantity of metallocene catalyst is introduced into the bulk loop reactor may be higher than the frequency rate at which the quantity of Ziegler-Natta catalyst is introduced. In another embodiment, a method of polymerizing propylene in a bulk loop reactor is provided which includes contacting a quantity of supported metallocene catalyst with a first quantity of scavenger, such as TEAL and or TIBAL, prior to injecting the supported metallocene catalyst into the bulk loop reactor and contacting a quantity of Ziegler-Natta catalyst system with a second quantity of scavenger prior to injecting the Ziegler-Natta catalyst system into the bulk loop reactor, wherein the second quantity of scavenger is greater that the first quantity of scavenger. In another embodiment, a method of contacting a flow of metallocene with a flow of propylene is provided. This method includes directing the flow of metallocene towards a junction, directing the flow of propylene towards the junction and maintaining a portion of the flow of metallocene separate from a portion of the flow propylene within a portion of the junction downstream of the flow of propylene into the junction. In another embodiment, a method of introducing a quantity of antifouling agent into a catalyst mixing system is provided. In this embodiment a portion of the antifouling agent is introduced at or downstream of a point of contact of a stream of propylene with a stream of catalyst. The antifouling agent may be a member, alone or in combination with other members, selected from the group consisting of Stadis 450 Conductivity Improver, Synperonic antifouling agent, and Pluronic antifouling agent.
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公开(公告)号：EP1234837B1
公开(公告)日：2005-09-07
申请号：EP02075520.3
申请日：2002-02-11
发明人： Gauthier, William J. , Lopez, Margarito , Rauscher, David J. , Campbell, Donald G., Jr. , Kerr, Margaret Elaine
IPC分类号： C08F10/00
CPC分类号： C08F10/00 , C08F4/65904 , C08F4/65912 , C08F4/65927 , C08F110/06 , C08F4/65916 , C08F2500/16 , C08F2500/18 , C08F2500/12 , C08F2500/03 , C08F2500/15
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公开(公告)号：EP1556318A2
公开(公告)日：2005-07-27
申请号：EP03770477.2
申请日：2003-09-25
IPC分类号： C07C2/66 , C07C15/085
CPC分类号： B01J29/90 , B01J29/7057 , B01J38/14 , C07C2/66 , C07C6/126 , C07C2529/08 , C07C2529/70 , Y02P20/584 , C07C15/073
摘要： A process for the production of ethylbenzene by the ethylation of benzene in the critical phase over a molecular sieve aromatic alkylation catalyst comprising cerium-promoted zeolite beta. An aromatic feedstock having a benzene content of at least 90 wt.% is supplied into a reaction zone and into contact with the cerium-promoted zeolite beta having a silica/alumina mole ratio within the range of 50-150 and a cerium-aluminum ratio of 0.5-1.5. Ethylene is supplied to the alkylation reaction zone in an amount to provide a benzene/ethylene mole ratio of 1-15. The reaction zone is operated at temperature and pressure conditions in which benzene is in the super critical phase to cause ethylation of the benzene in the presence of the cerium zeolite beta alkylation catalyst. An alkylation product is produced containing ethylbenzene as a primary product with the attendant production of heavier alkylated by-products of no more than 60 wt.% of the ethylbenzene. The critical phase alkylation reaction may be followed by the transalkylation of a polyalkylated aromatic component.
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65.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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66.发明公开A method for stabilizing vinyl aromatic monomers using selected polymerization inhibitors and polymers prepared therewith 有权一种用于使用由其制备选定的聚合抑制剂和聚合物稳定乙烯基芳香族单体的方法
公开(公告)号：EP1362838A3
公开(公告)日：2004-03-24
申请号：EP03076188.6
申请日：2003-04-22
发明人： Merrill, James T.
IPC分类号： C07C15/46 , C07C7/20 , C08F112/08
摘要： Disclosed is the observation that 7-aryl-quinone methides and 4-tert-butylcatechol, when used in combination in a vinyl aromatic monomer to inhibit polymerization, do not inhibit polymerization to the same extent as each would if used separately. Stated another way, a phenomenon has been observed that when these two compounds are used together, they can, to a large extent, render each other unable to inhibit polymerization in a vinyl aromatic monomer. Also disclosed are methods of preventing adverse results of this interaction when undesired and a method of using this interaction to prepare a reactive vinyl aromatic monomer having a concentration of 4-tert-butylcatechol that would otherwise inhibit polymerization. The invention is disclosed to be useful with the production and storage of any vinyl aromatic monomer and is disclosed to be particularly useful with the production and storage of styrene monomer.
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公开(公告)号：EP1390442A2
公开(公告)日：2004-02-25
申请号：EP02733038.0
申请日：2002-03-12
发明人： GARRETT CORDERA, Merry, Holli , COMEAUX, Charles, Allen , HERREBOUT, Koenraad, Jacques , HUNTER, Joe, David
IPC分类号： C10G1/00
CPC分类号： C10G45/08 , C10G49/002 , C10G65/04 , C10G65/12
摘要： A hydrofining process in which a sulfur- and hydrocarbon-containing processing stream is supplied to a multi-stage hydrotreating reactor incorporating separate stages of cobalt molybdenum catalysts. Hydrogen may be supplied concurrently or counter-currently with the hydrocarbon-containing processing stream. The processing stream is passed into contact with an initial catalyst stage comprising a cobalt molybdenum desulfurization catalyst present in a minor amount of the total composite amount of catalysts within the reactor. Thereafter the processing stream is passed through a subsequent catalyst stage comprising a major amount of cobalt molybdenum hydrocracking catalyst. The effluent stream having a reduced sulfur content is then withdrawn from the hydrotreating reactor. The initial and subsequent catalyst stages are separated by an intervening sector within the reactor containing an inert particulate refractory material, specifically silica particles generally spheroidal in shape.
摘要翻译： 一种加氢精制方法，其中将含硫和烃的加工流供应到加入分开的钴钼催化剂阶段的多级加氢处理反应器中。 氢气可与含烃处理物流同时或逆流供应。 使处理物流与初始催化剂阶段接触，所述初始催化剂阶段包含存在于反应器内少量的催化剂总复合量中的钴钼脱硫催化剂。 此后，使处理物流通过包含主要量的钴钼加氢裂化催化剂的随后的催化剂阶段。 然后将具有降低的硫含量的流出物流从加氢处理反应器中排出。 初始和随后的催化剂阶段由反应器内的介入扇区分离，该介入扇区包含惰性颗粒状耐火材料，特别是二氧化硅颗粒，通常为球形。
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公开(公告)号：EP1229053A3
公开(公告)日：2004-01-02
申请号：EP02075391.9
申请日：2002-01-30
发明人： Guenther, Gerhard K. , Nairn, Lea Ann , Clark, Curtis, D. , Hicks, Ben W. , Tharappel, Ronald A. , Coffy, Tim J.
IPC分类号： C08F8/50
CPC分类号： B29C47/92 , B29C47/0004 , B29C47/0023 , B29C47/0054 , B29C2947/92695 , C08F8/50 , C08F2810/10 , C08F110/02
摘要： A method of processing polyethylene for use as an extruded blow molding resin to improve the properties and processability thereof is accomplished by modifying a polyethylene resin having a molecular weight distribution (Mw/Mn) of less than about 10. The modification is carried out by the addition of a free radical initiator to the resin during extrusion of the resin to increase the rheological breadth of the polyethylene from about 10% to about 60% compared to unmodified polyethylene resin extruded under similar conditions. In another aspect of the invention, a polyethylene resin having higher melt index is processed to provide a desired final melt index by the addition of a free radical initiator where it would otherwise be necessary to utilize a resin having lower melt flow, and which is more difficult to process. Improvements in color can also be obtained.
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69.发明公开A method for stabilizing vinyl aromatic monomers using selected polymerization inhibitors and polymers prepared therewith 有权一种用于使用由其制备选定的聚合抑制剂和聚合物稳定乙烯基芳香族单体的方法
公开(公告)号：EP1362838A2
公开(公告)日：2003-11-19
申请号：EP03076188.6
申请日：2003-04-22
发明人： Merrill, James T.
IPC分类号： C07C15/46 , C07C7/20 , C08F112/08
摘要： Disclosed is the observation that 7-aryl-quinone methides and 4-tert-butylcatechol, when used in combination in a vinyl aromatic monomer to inhibit polymerization, do not inhibit polymerization to the same extent as each would if used separately. Stated another way, a phenomenon has been observed that when these two compounds are used together, they can, to a large extent, render each other unable to inhibit polymerization in a vinyl aromatic monomer. Also disclosed are methods of preventing adverse results of this interaction when undesired and a method of using this interaction to prepare a reactive vinyl aromatic monomer having a concentration of 4-tert-butylcatechol that would otherwise inhibit polymerization. The invention is disclosed to be useful with the production and storage of any vinyl aromatic monomer and is disclosed to be particularly useful with the production and storage of styrene monomer.
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70.发明公开Selective activity of metallocene-type catalyst for isotactic poly-alpha-olefin production 失效用于生产全同聚烯烃的茂金属催化剂的选择性作用
公开(公告)号：EP1291365A2
公开(公告)日：2003-03-12
申请号：EP02079474.9
申请日：1998-01-27
CPC分类号： C08F10/00 , C08F4/65916 , C08F4/65927 , C08F110/06 , C08F4/65912 , C08F2500/15 , C08F2500/01
摘要： This invention describes a process for preparing isotactic poly-alpha olefin of melt flow equal to or less than 8 dg/min comprising the steps of:
A. providing a suitable catalyst system capable of producing isotactic poly-alpha olefin comprising a metallocene-type catalyst, an alumoxane as cocatalyst or catalyst activator, and optionally a catalyst support;
B. ripening the suitable catalyst system of step A by contacting with an alkyl aluminum for a period of time of from 6 hours to 14 days ;
C. polymerising a suitable monomer using the ripened catalyst system of step B ; and
recovering the desired isotactic polyolefin.摘要翻译： 本发明描述了一种用于制备熔融流动的全同立构聚α-烯烃等于或小于8分克/分钟，包括以下步骤：A.提供合适的催化剂体系能生产全同立构聚α-烯烃包含金属茂型催化剂的 在铝氧烷作为助催化剂或活化剂的催化剂，和任选的催化剂载体; B.通过与烷基铝接触一段从6小时至14天内时间熟化步骤A的合适的催化剂体系; C.使用聚合物步骤B的熟化催化剂体系伊辛合适的单体; 和回收所需全同立构聚烯烃。
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