-
公开(公告)号：US5173278A
公开(公告)日：1992-12-22
申请号：US669821
申请日：1991-03-15
CPC分类号： B01D53/8625 , B01D53/8621 , C10G11/182 , B01D2257/408 , Y02P30/446
摘要： A flue gas that contains small amounts of both HCN and NO.sub.x, produced, for example, by catalyst regeneration in the fluid catalytic cracking of a petroleum gas oil, is readily denitrified by the catalyzed reaction that proceeds approximately according to:HCN+NO.fwdarw.N.sub.2 (gas)+CO+CO.sub.2 +H.sub.2 OIf the molar ratio of HCN to NO in the flue gas is about 1.0, e.g. in the range of about 0.8 to 1.2, effective denitrification is achieved without first changing the composition of the flue gas by contacting it with catalyst under conversion conditions including elevated temperature. If the molar ratio of HCN to NO exceeds 1.2, the ratio may be adjusted to about 1.0 to 1.1 by thermal or catalytic oxidation in the presence of oxygen gas, followed by catalytic denitrification. If the molar ratio is less than about 0.8, the effective molar ratio is adjusted to about 1.0 to 1.1 by adding NH.sub.3 gas, followed by denitirification. In all three instances an excessive content of carbon monoxide in the flue gas may be corrected by passing the denitrified flue gas to a CO-boiler.Catalysts for the denitrification reaction are described and exemplified by crystalline zeolites of the ZSM-5 type, and by vanadium oxide supported on titania.
摘要翻译： 含有少量HCN和NOx的烟道气，例如通过在石油瓦斯油的流化催化裂化中的催化剂再生产生的烟气，可以通过大致按以下方式进行的催化反应脱氮：HCN + NO-> N2（气体）+ CO + CO2 + H2O如果烟气中HCN与NO的摩尔比为约1.0， 在约0.8至1.2的范围内，无需首先在包括升高的温度的转化条件下将催化剂与催化剂接触，而不改变烟道气的组成，实现有效的脱氮。 如果HCN与NO的摩尔比超过1.2，则在氧气存在下通过热或催化氧化将该比例调节至约1.0至1.1，然后进行催化反硝化。 如果摩尔比小于约0.8，则通过加入NH 3气体将有效摩尔比调节至约1.0-1.1，然后进行脱硝。 在所有三种情况下，可以通过将反硝化烟道气通过CO锅炉来校正烟道气中过量的一氧化碳。 用于脱氮反应的催化剂通过ZSM-5型的结晶沸石和负载在二氧化钛上的氧化钒来描述和例示。
-
2.发明授权
公开(公告)号：US5053573A
公开(公告)日：1991-10-01
申请号：US583273
申请日：1990-09-14
申请人： Diane V. Jorgensen , Ajit V. Sapre
发明人： Diane V. Jorgensen , Ajit V. Sapre
CPC分类号： C10G29/205 , C10G59/02 , C10G63/00 , Y10S585/904 , Y10S585/91
摘要： Conversion of benzene to heavier aromatics by contact with alkyl polynucleararomatics, preferably FCC heavy cycle oil, in the presence of an alkylation/transalkylation catalyst is disclosed. Efficient conversion of relatively dilute benzene in reformate is possible. Use of alkyl polynucleararomatics as a source of alkyl groups, with reduced use of monocyclic alkyl aromatics, permits robust reaction conditions to be used without a net formation of benzene by dealkylation. The process preferably uses a solid zeolite based acidic catalyst disposed in a fixed, moving or fluid bed reactor. Preferred catalysts comprise MCM-22 or ZSM-5.
摘要翻译： 公开了在烷基化/烷基转移催化剂存在下，通过与烷基多核芳烃（优选FCC重循环油）接触将苯转化成较重芳族化合物。 相对稀释的苯在重整产品中的有效转化是可能的。 使用烷基多核芳烃作为烷基的来源，减少使用单环烷基芳族化合物，允许使用稳定的反应条件，而无需通过脱烷基形成苯。 该方法优选使用设置在固定，移动或流化床反应器中的固体沸石基酸性催化剂。 优选的催化剂包括MCM-22或ZSM-5。
-
3.发明授权Conversion of methanol to olefins in a tubular reactor with light olefin co-feeding 失效在具有轻烯烃共同进料的管式反应器中将甲醇转化为烯烃
公开(公告)号：US4590320A
公开(公告)日：1986-05-20
申请号：US765579
申请日：1985-08-14
申请人： Ajit V. Sapre
发明人： Ajit V. Sapre
CPC分类号： C07C1/20 , B01J8/067 , B01J2208/00044 , B01J2208/00212 , B01J2208/0053 , C07C2529/40 , C07C2529/50
摘要： The operating performance of a tubular reactor system designed for the exothermic conversion of methanol to light olefins is improved by cofeeding small quantities of light olefins with the methanol feed, whereby a more controllable operation is achieved. Catalyst activity and cycle length also improves significantly. The light olefins can be produced in situ during conversion.
摘要翻译： 通过与甲醇进料共同供给少量轻质烯烃，可以改善设计用于甲醇向轻质烯烃的放热转化的管式反应器系统的操作性能，从而实现更可控的操作。 催化剂活性和循环长度也显着提高。 轻质烯烃可以在转化过程中原位生产。
-
公开(公告)号：US5082983A
公开(公告)日：1992-01-21
申请号：US583266
申请日：1990-09-14
IPC分类号： C10G11/18
CPC分类号： C10G11/18 , Y10S585/94
摘要： A process for reducing the benzene content of a reformate stream in a conventional catalytic cracking reactor wherein a heavy hydrocarbon feed is cracked to lighter products by contact with a supply of hot regenerated cracking catalyst is disclosed. The reformate can be mixed with the heavy feed to the cracking reactor, but preferably reformate contacts hot regenerated cracking catalyst before the heavy feed is added. Benzene content is reduced by alkylation with reactive fragments created in the cracking reactor, or by transalkylation with alkyl aromatics. Benzene removal can be enhanced by adding a light reactive gas such as ethylene to the cracking reactor, by adding heavier aromatics, such as a light cycle oil, or both. The reaction is preferably conducted in an FCC riser reactor, but may be conducted in a moving bed cracking reactor.
摘要翻译： 公开了一种在常规催化裂化反应器中降低重整产物流中苯含量的方法，其中重烃进料通过与热再生裂化催化剂的供应接触而裂化成较轻的产物。 可以将重整油与重质进料混合到裂化反应器中，但是在加入重质进料之前优选重结晶接触热再生裂化催化剂。 通过在裂解反应器中产生的反应性碎片进行烷基化或通过与烷基芳族化合物烷基转移来降低苯含量。 通过加入较重的芳族化合物（如轻质循环油）或两者，可以通过向裂化反应器中加入轻质反应性气体如乙烯来提高苯的去除能力。 反应优选在FCC提升管反应器中进行，但可以在移动床裂解反应器中进行。
-
公开(公告)号：US5057205A
公开(公告)日：1991-10-15
申请号：US204834
申请日：1988-06-10
申请人： Arthur A. Chin , Ajit V. Sapre , Michael S. Sarli
发明人： Arthur A. Chin , Ajit V. Sapre , Michael S. Sarli
IPC分类号： C10G11/18
CPC分类号： C10G11/18 , Y10S502/521
摘要： A catalytic cracking process especially useful for the catalytic cracking of high metals content feeds including resids in which the feed is cracked in the presence of a catalyst additive comprising an alkaline earth metal oxide and an alkaline earth metal spinel, preferably a magnesium aluminate spinel which acts as a trap for vanadium as well as an agent for reducing the content of sulfur oxides in the regenerator flue gas. The additive is used in the form of a separate additive from the cracking catalyst particles in order to keep the vanadium away from the cracking catalyst and so preserve the activity of the catalyst; in addition, use of separate additive particles permits the makeup rate for the additive to be varied relative to that of the cracking catalyst in order to deal with variations in the metals and sulfur content of the cracking feed. The additive may be separated from the cracking catalyst by physical classification so that it can be separately withdrawn from the unit for better control of the catalyst/additive ratio. The additive may be injected into the unit separate from the cracking catalyst so that it contacts the feed first to effect a preliminary demetallation.
摘要翻译： 催化裂解方法特别适用于高金属含量进料的催化裂化，包括在催化剂添加剂存在下进料裂化的残渣，所述催化剂添加剂包含碱土金属氧化物和碱土金属尖晶石，优选铝酸镁尖晶石，其作用 作为钒的捕集剂以及用于降低再生器烟道气中的硫氧化物含量的试剂。 添加剂以与裂化催化剂颗粒不同的添加剂的形式使用，以使钒远离裂化催化剂，因此保持催化剂的活性; 此外，使用单独的添加剂颗粒允许添加剂的补充比率相对于裂化催化剂的补充速率变化，以便处理裂化原料的金属和硫含量的变化。 添加剂可以通过物理分级与裂化催化剂分离，从而可以单独从单元中取出，以更好地控制催化剂/添加剂比例。 可以将添加剂注入到与裂化催化剂分离的单元中，使得其首先接触进料以进行初步脱金属。
-
公开(公告)号：US4980048A
公开(公告)日：1990-12-25
申请号：US431953
申请日：1989-11-06
申请人： Tiberiu M. Leib , Ajit V. Sapre
发明人： Tiberiu M. Leib , Ajit V. Sapre
CPC分类号： B01J8/0015 , C10G11/182
摘要： An improved process and apparatus are disclosed for fluidized bed catalyst regeneration in a cross-flow type regenerator. A baffled coked catalyst inlet located within the dense bed of catalyst disperses and distributes coked catalyst flow in a direction generally normal to the direction of flow in the catalyst inlet. The baffle significantly reduces the stagnant regions in the bed.
-
公开(公告)号：US5320740A
公开(公告)日：1994-06-14
申请号：US1881
申请日：1993-01-08
申请人： Diane V. Jorgensen , Ajit V. Sapre
发明人： Diane V. Jorgensen , Ajit V. Sapre
CPC分类号： C10G11/18
摘要： Catalyst stripping in the fluid catalytic cracking process is improved by cooling the spent catalyst to quench catalytic condensation reactions, then stripping the cooled catalyst in a primary stripper, followed by heating and a stage of hot stripping. Quenched stripping reduces coke make by reducing conversion of light olefins, made during the FCC process, into coke.
摘要翻译： 通过冷却废催化剂以淬灭催化缩合反应，然后在初级汽提器中汽提冷却的催化剂，然后加热和热汽提阶段，可以提高流化催化裂化过程中的催化剂汽提。 淬火汽提通过将FCC过程中制成的轻质烯烃转化为焦炭来减少焦炭生成。
-
公开(公告)号：US5215650A
公开(公告)日：1993-06-01
申请号：US807004
申请日：1991-12-13
申请人： Ajit V. Sapre
发明人： Ajit V. Sapre
IPC分类号： C10G11/18
CPC分类号： C10G11/18 , Y10S585/91 , Y10S585/911
摘要： Operational flexibility of a fluid catalytic cracking process is improved by indirectly cooling catalyst in an endothermic catalyst cooler. Catalyst withdrawn from the FCC unit is cooled by driving an endothermic chemical reaction, which may be either thermal or catalytic. Dehydrogenation of, e.g., light aliphatics, produced by the cracking reactor in the endothermic cooler allows the FCC unit to adapt to heavier feeds. A preferred endothermic cooler, comprising a base heat exchanger section, transport riser, and solids collection and recycle vessel is disclosed.
摘要翻译： 通过在吸热式催化剂冷却器中间接冷却催化剂来提高流化催化裂化过程的操作灵活性。 从FCC装置中取出的催化剂通过驱动吸热化学反应来冷却，其可以是热的或催化的。 由吸热式冷却器中的裂化反应器产生的例如轻脂肪族的脱氢化使得FCC单元适应较重的进料。 公开了一种优选的吸热式冷却器，其包括基底热交换器部分，输送提升管和固体收集和再循环容器。
-
公开(公告)号：US5205993A
公开(公告)日：1993-04-27
申请号：US808953
申请日：1991-12-13
申请人： Tiberiu M. Leib , Ajit V. Sapre
发明人： Tiberiu M. Leib , Ajit V. Sapre
CPC分类号： B01J8/0015 , C10G11/182
摘要： An process and apparatus are disclosed for fluidized bed catalyst regeneration in a cross-flow type regenerator. A baffled coked catalyst inlet located within the dense bed of catalyst disperses and distributes coked catalyst flow in a direction generally normal to the direction of flow in the catalyst inlet. The baffle significantly reduces the stagnant regions in the bed.
摘要翻译： 公开了一种在交叉流型再生器中用于流化床催化剂再生的方法和装置。 位于催化剂致密床内的带挡板的焦化催化剂入口分散并在大致垂直于催化剂入口流动方向的方向上分配焦化催化剂流。 挡板显着减少了床上停滞的区域。
-
公开(公告)号：US5062944A
公开(公告)日：1991-11-05
申请号：US431952
申请日：1989-11-06
申请人： Tiberiu M. Leib , Ajit V. Sapre
发明人： Tiberiu M. Leib , Ajit V. Sapre
CPC分类号： B01J8/18 , B01J8/0015 , C10G11/182
摘要： An improved process and apparatus are disclosed for fluidized catalytic cracking of hydrocarbons using a cross-flow or swirl type catalyst regenerator. Instead of a single catalyst withdrawal outlet for regenerated catalyst, multiple catalyst withdrawal points are provided. Use of multiple catalyst outlets, or a continuous radial catalyst outlet, greatly reduces stagnant regions in the bed.
摘要翻译： 公开了一种改进的方法和装置，其用于使用交叉流或涡流型催化剂再生器的烃的流化催化裂化。 代替用于再生催化剂的单个催化剂排出口，提供多个催化剂取出点。 多个催化剂出口或连续的径向催化剂出口的使用大大减少了床中的停滞区域。
-
-
-
-
-
-
-
-
-
搜索结果
23 条记录 (耗时 0.036 秒)