-
61.发明授权Cyclic catalytic hydrocarbon conversion process with reduced chloride emissions 失效循环催化烃转化过程，减少氯化物排放
公开(公告)号：US5965473A
公开(公告)日：1999-10-12
申请号：US764868
申请日：1996-12-13
CPC分类号： B01D53/685 , B01J38/10 , B01J38/42 , B01J38/44 , C10G35/06 , B01D2259/40
摘要： A method is disclosed for recovering chlorine-containing species from the outlet gas of a hydrocarbon conversion process with a cyclic regeneration operation. The outlet gas from an off-stream catalyst bed in which regeneration is occurring is passed to another off-stream catalyst bed which contains spent catalyst and which is maintained at sorption conditions. The spent catalyst particles sorb the chlorine-containing species from the outlet gas. This method captures and retains within the hydrocarbon conversion process chlorine-containing species that would otherwise be scrubbed and lost from the process and that would need to be replaced by the injection of make-up chlorine-containing species. This method results in significant savings in operating costs of a cyclic regeneration process. This method is adaptable to many processes for the catalytic conversion of hydrocarbons in which deactivated catalyst are regenerated by a cyclic regeneration operation.
摘要翻译： 公开了一种利用循环再生操作从烃转化过程的出口气中回收含氯物质的方法。 来自再生发生的离岸催化剂床的出口气体被传递到另一个含有废催化剂并且保持在吸附条件下的脱氢催化剂床。 废催化剂颗粒从出口气体中吸附含氯物质。 该方法捕获并保留了碳氢化合物转化过程中含氯物质，否则该物质将被洗涤并从该方法中流失，并且需要通过注入含氯含量物质代替。 这种方法可以显着节省循环再生过程的运行成本。 该方法适用于催化转化烃的许多方法，其中通过循环再生操作再生失活的催化剂。
-
公开(公告)号：US5498756A
公开(公告)日：1996-03-12
申请号：US367542
申请日：1995-01-03
摘要： A regeneration process and apparatus eliminates the need for an external chlorination recycle loop. The method and apparatus uses two-pass internal mixing of a chlorine compound input stream and drying gas to both mix and heat the chlorination gas before entering the chlorination zone. The only heat required for the process is a small amount for vaporizing the chlorine containing input stream to prevent the formation of chloride droplets. All other heat for the chlorination zone is supplied internally in the regeneration vessel.
-
63.发明授权
公开(公告)号：US5457077A
公开(公告)日：1995-10-10
申请号：US176159
申请日：1993-12-30
摘要： A regeneration process for reconditioning catalyst particles containing platinum by transferring the catalyst particles through a combustion zone and a reconditioning zone is disclosed. Drying of the catalyst particles and redispersion of the platinum occur simultaneously in a single reconditioning zone. Catalyst that enters the reconditioning zone is contacted countercurrently with a heated gas stream containing chlorine and oxygen. A low moisture content of the gas stream aids drying and allows the equilibrium reaction between hydrogen chloride and oxygen on the one hand, and water and chlorine on the other hand to be shifted to chlorine. This shift of the equilibrium reaction can be further improved by maintaining an oxygen-enriched environment within the reconditioning zone. By eliminating the need for separate drying and redispersion zones used previously, the regeneration apparatus is less expensive to build and the regeneration process is less expensive to operate.
摘要翻译： 公开了一种用于通过将催化剂颗粒转移通过燃烧区和再生区来重新调节含有铂的催化剂颗粒的再生方法。 催化剂颗粒的干燥和铂的再分散同时发生在单个再生区中。 进入再生区的催化剂与含有氯和氧的加热气流逆流接触。 气流的低水分含量一方面有助于干燥，并允许氯化氢和氧气之间的平衡反应，另一方面水和氯也被转移到氯气中。 通过保持再生区内的富氧环境，可以进一步提高平衡反应的这种转变。 通过消除对先前使用的单独的干燥和再分散区的需要，再生设备的建造成本较低，并且再生过程操作成本较低。
-
公开(公告)号：US5397458A
公开(公告)日：1995-03-14
申请号：US173237
申请日：1993-12-27
IPC分类号： B01J8/12 , B01J38/44 , C10G35/12 , C10G35/085
摘要： A regeneration process and apparatus eliminates the need for an external chlorination recycle loop. The method and apparatus uses two-pass internal mixing of a chlorine compound input stream and drying gas to both mix and heat the chlorination gas before entering the chlorination zone. The only heat required for the process is a small amount for vaporizing the chlorine containing input stream to prevent the formation of chloride droplets. All other heat for the chlorination zone is supplied internally in the regeneration vessel.
摘要翻译： 再生方法和装置消除了对外部氯化循环回路的需要。 该方法和装置使用氯化合物输入流和干燥气体的双程内部混合，以在进入氯化区之前混合和加热氯化气体。 该方法所需的唯一热量是用于蒸发含氯输入流的少量以防止形成氯化物液滴。 用于氯化区的所有其他热量在再生容器内部供应。
-
公开(公告)号：US5378669A
公开(公告)日：1995-01-03
申请号：US127187
申请日：1993-09-27
申请人： Shun C. Fung
发明人： Shun C. Fung
IPC分类号： B01J23/96 , B01J29/90 , B01J38/18 , B01J38/42 , B01J38/44 , C10G35/095 , B01J23/38 , B01J29/06 , B01J29/38
摘要： A method for regenerating a Group VIII noble metal catalyst which has been contaminated with coke during a reforming process. The method comprises (a) burning off the coke from the catalyst, redispersing the noble metal on the surface of the catalyst support by contacting the catalyst with halogen gas and carbon dioxide, and (c) chemically reducing the catalyst. The presence of carbon dioxide in the redispersing step improves the activity of the regenerated catalyst.
摘要翻译： 一种在重整过程中再生被焦炭污染的VIII族贵金属催化剂的方法。 该方法包括（a）从催化剂中烧掉焦炭，通过使催化剂与卤素气体和二氧化碳接触，将贵金属再分散在催化剂载体的表面上，和（c）化学还原催化剂。 再分散步骤中二氧化碳的存在提高了再生催化剂的活性。
-
公开(公告)号：US5376607A
公开(公告)日：1994-12-27
申请号：US16211
申请日：1993-02-11
申请人： Paul A. Sechrist
发明人： Paul A. Sechrist
IPC分类号： A61K31/43 , B01J8/12 , B01J23/90 , B01J23/96 , B01J38/20 , C10G35/12 , B01J38/24 , B01J38/44
摘要： A semi-continuous process for combusting coke from catalyst particles in a fixed bed is improved by rejecting from the combustion process a high moisture content flue gas stream which is produced by the combustion of a relatively large proportion of the hydrogen in the coke that enters the combustion section during an early stage of combustion. By operating the early stage of combustion at conditions to increase the rate of combustion of the hydrogen in the coke relative to that of the carbon in the coke, the overall equilibrium level of water in a flue gas/recycle gas that circulates through the process is lowered. The high moisture content flue gas stream from the early stage of combustion is rejected separately from the process. Subdivision of the bed and separation of the flue gas streams can be easily accomplished in a vertically arranged catalyst particle bed by adding baffles to the recycle gas distribution space that subdivide the distribution space into separate chambers and by adding baffles to the flue gas collection space that subdivide the collection space into separate chambers. The amount of high moisture content flue gas withdrawn from the process can be equal to the amount of the make-up gas streams entering the flue gas/recycle gas loop.
摘要翻译： 通过从燃烧过程中排除高含水量的烟道气流，可以改善在固定床中从催化剂颗粒燃烧焦炭的半连续方法，该高含水量的烟道气流是通过进入焦炭中的相当大比例的焦炭中的氢的燃烧产生的 燃烧段在燃烧的早期阶段。 通过在提高焦炭中氢的燃烧速率相对于焦炭中的碳的燃烧速率的条件下操作燃烧的早期阶段，通过该过程循环的烟道气/循环气体中的水的总平衡水平为 降低 来自燃烧早期的高含水量烟气流与该方法分开拒绝。 床的细分和烟道气流的分离可以在垂直布置的催化剂颗粒床中容易地实现，通过向循环气体分配空间添加挡板，将分配空间细分成分离的室，并且通过向烟道气收集空间添加挡板， 将收集空间细分为不同的房间。 从该方法抽出的高含水量烟道气的量可以等于进入烟道气/循环气回路的补充气流的量。
-
公开(公告)号：US5270272A
公开(公告)日：1993-12-14
申请号：US889689
申请日：1992-05-26
IPC分类号： B01J29/90 , B01J38/08 , C10G35/095 , B01J29/38 , B01J38/44
CPC分类号： B01J29/90 , B01J38/08 , C10G35/095 , Y10S502/517
摘要： A sulfur-sensitive catalyst which has been deactivated by accumulating sulfur on the catalyst is desulfurized by contact with ammonia at high temperature. The technique is particularly effective for reforming catalysts containing a large-pore zeolite which are selective for dehydrocyclization of paraffins. The desulfurization may be combined with regeneration for coke removal from the catalyst.
摘要翻译： 已经通过在催化剂上积累硫而失活的硫敏感催化剂通过在高温下与氨接触进行脱硫。 该技术对于重整含有对链烷烃的脱氢环化有选择性的大孔沸石的催化剂是特别有效的。 脱硫可以与从催化剂中除去焦炭的再生相结合。
-
68.发明授权
公开(公告)号：US5106798A
公开(公告)日：1992-04-21
申请号：US551378
申请日：1990-07-12
申请人： Shun C. Fung
发明人： Shun C. Fung
摘要： A method for regenerating a Group VIII noble metal catalyst which has been contaminated with coke during a reforming process. The method comprises (a) burning off the coke from the catalyst, (b) redispersing the noble metal on the surface of the catalyst support by contacting the catalyst with halogen gas and carbon dioxide, and (c) chemically reducing the catalyst. The presence of carbon dioxide in the redispersing step improves the activity of the regenerated catalyst.
摘要翻译： 一种在重整过程中再生被焦炭污染的VIII族贵金属催化剂的方法。 该方法包括（a）从催化剂中烧掉焦炭，（b）通过使催化剂与卤素气体和二氧化碳接触，将贵金属再分散在催化剂载体的表面上，和（c）化学还原催化剂。 再分散步骤中二氧化碳的存在提高了再生催化剂的活性。
-
69.发明授权
公开(公告)号：US4980325A
公开(公告)日：1990-12-25
申请号：US364754
申请日：1989-06-12
申请人： Paul A. Sechrist
发明人： Paul A. Sechrist
摘要： A method for continuously or semi-continuously regenerating reforming catalyst by the recirculation of a gas stream advantageously controls the water content by using an oxygen-deficient makeup gas stream to supply the oxygen for combustion of coke. The volume of makeup gas entering the process is increased by reducing its oxygen concentration so that additional waste gases from the combustion of coke on the catalyst can be vented. The venting of additional gas from the circulating gas stream lowers the overall water concentration during the combustion of coke. The oxygen-deficient makeup gas stream can be supplied by oxygen and nitrogen separation from air. Where the production of the oxygen-deficient makeup gas stream also produces an oxygen-enriched stream, the oxygen-enriched stream is advantageously added to a catalyst reconditioning step for an increased dispersion of metals in the catalyst.
摘要翻译： 通过气流的再循环连续或半连续地再生重整催化剂的方法有利地通过使用缺氧补充气流来供应氧来燃烧焦炭来控制含水量。 进入该过程的补充气体的体积通过降低其氧浓度而增加，使得可以排出来自催化剂上焦炭燃烧的附加废气。 来自循环气流的附加气体的排放降低焦炭燃烧期间的总体水分浓度。 缺氧补充气流可以通过氧气和氮气分离从空气中提供。 当缺氧补充气流的产生也产生富氧流时，有利地将富氧流加入到催化剂再生步骤中，以增加金属在催化剂中的分散。
-
70.发明授权Process for regenerating or activating a n-paraffin isomerization mordenite-containing catalyst 失效用于再生或活化含有正构烷烃的异构化丝光沸石催化剂的方法
公开(公告)号：US4835129A
公开(公告)日：1989-05-30
申请号：US164945
申请日：1988-03-07
IPC分类号： B01J38/44 , B01J29/90 , B01J38/18 , B01J38/42 , C07C1/00 , C07C5/27 , C07C67/00 , C10G35/095 , C10G45/64
CPC分类号： C10G45/64 , B01J29/90 , B01J38/18 , C07C5/2791 , B01J38/42 , Y02P20/584
摘要： Process for regenerating or activating a catalyst for isomerizing n-paraffins, containing at least one group VIII metal supported on an acid mordenite, wherein, after having lost at least a part of its initial activity, said catalyst is treated in a first step with an oxygen-containing gas at a temperature lower than about 550.degree. C., so as to remove the major part of the catalyst coke content, and in a second step the resultant product from the first step is oxychlorinated to a temperature of about 200.degree.-500.degree. C. by means of a gas mixture containing oxygen, water and chlorine or at least one chlorinated compound, said chlorine or chlorinated compound being used in a total amount of 0.5-10% by weight, calculated as chlorine, in proportion to the mordenite weight.
摘要翻译： 用于再生或活化用于使正链烷烃异构化的催化剂的方法，所述催化剂含有负载在酸性丝光沸石上的至少一种VIII族金属，其中在损失了其初始活性的至少一部分之后，所述催化剂在第一步中用 在低于约550℃的温度下进行含氧气体，以除去催化剂焦炭含量的主要部分，在第二步中将得自第一步的产物氧氯化至约200℃ - 500℃，通过含有氧，水和氯的气体混合物或至少一种氯化化合物，所述氯或氯化合物的用量按氯计算为0.5-10重量％，按氯计 丝光沸石重量。
-
-
-
-
-
-
-
-
-
搜索结果
128 条记录 (耗时 0.032 秒)
