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公开(公告)号：US4822480A
公开(公告)日：1989-04-18
申请号：US137113
申请日：1987-12-22
CPC分类号： C10G49/22
摘要： Improved product stripping in a catalytic hydrodesulfurization (CHD) product stream is obtained by employing off-gas from the unit as a stripping medium. The compressed off-gas is introduced into the stripper below the stripper feed level. The stripper may be operated at pressures higher than those previously employed in CHD product strippers and this permits LPG recovery to be maximized with lower product sulfur levels and reduced load in the off-gas compressor.
摘要翻译： 通过使用来自该单元的废气作为汽提介质来获得催化加氢脱硫（CHD）产物流中的改进的产物汽提。 压缩的废气在汽提器进料液位下方引入汽提器。 汽提器可以在高于CHD产品汽提器中以前使用的压力下操作，并且这允许LPG回收率随着废气压缩机中较低的产品硫含量和减少的负荷而最大化。
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52.发明授权Production of heavier hydrocarbons from light olefins in multistage catalytic reactors 失效在多级催化反应器中从轻质烯烃生产较重的烃
公开(公告)号：US4788366A
公开(公告)日：1988-11-29
申请号：US137913
申请日：1987-12-28
申请人： Mohsen N. Harandi , Hartley Owen , Samuel A. Tabak
发明人： Mohsen N. Harandi , Hartley Owen , Samuel A. Tabak
CPC分类号： C07C2/00 , C07C2/12 , C10G50/00 , C10L1/06 , C07C2529/40
摘要： A multi-stage catalytic olefin upgrading technique for converting lower olefinic feedstock to heavier liquid hydrocarbon product. The invention provides a fluid bed continuous primary stage reaction zone with shape selective medium pore zeolite oligomerization catalyst particles to convert at least a portion of the lower olefinic components to intermediate olefinic hydrocarbons containing olefinic and aromatic components; cooling primary stage reaction effluent to condense at least a portion of the intermediate hydrocarbons; feeding a second olefinic stream to a serially arranged multi-reactor secondary stage for upgrading lower olefins; quenching partially upgraded secondary stage olefins with primary stage liquid; and further contacting the quenched mixture including aromatics from the primary stage with shape selective medium pore zeolite olgiomerization catalyst in a high pressure fix bed secondary stage distillate mode catalytic reactor at elevated temperature and high prssure to provide a heavier hydrocarbon effluent stream comprising distillate hydrocarbons.
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公开(公告)号：US4709113A
公开(公告)日：1987-11-24
申请号：US43718
申请日：1987-04-29
申请人： Mohsen N. Harandi , Hartley Owen , Sean C. Smyth
发明人： Mohsen N. Harandi , Hartley Owen , Sean C. Smyth
CPC分类号： C07C1/20 , C10L1/023 , C07C2529/40 , Y02P30/20 , Y10S203/24
摘要： A process for converting crude aqueous methanol feedstock to liquid hydrocarbons in contact witha medium pore shape selective crystalline acid zeolite catalyst, such as HZSM-5. In a preferred embodiment, the novel technique comprises the steps of: (a) contacting a crude methanol feedstock containing a minor amount of water with a liquid hydrocarbon extraction stream under extraction conditions favorable to selective extraction of the methanol, thereby providing an extract liquid stream rich in methanol and an aqueous raffinate stream lean in methanol; (b) charging the extracted methanol substantially free of water to said reaction zone under process conditions to convert substantially all methanol to hydrocarbons; (c) cooling reaction effluent to recover aqueous liquid byproduct stream, gas rich in C.sub.2.sup.- hydrocarbons, liquid rich in C.sub.3 -C.sub.4 and C.sub.5.sup.+ hydrocarbons; and (d) contacting crude methanol feedstock with at least a portion of the liquid hydrocarbons employed as extraction liquid.
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公开(公告)号：US5208387A
公开(公告)日：1993-05-04
申请号：US813716
申请日：1991-12-27
申请人： Mohsen N. Harandi , Hartley Owen
发明人： Mohsen N. Harandi , Hartley Owen
IPC分类号： C07C41/05
摘要： An improved process is disclosed for the acid catalyzed production of DIPE from propene and water feedstreams that eliminates the propene recycle stream to the olefin hydration reactor and achieves high propene conversion. The accomplishment is achieved by carrying out the hydration and etherification reactions in two stages wherein the first stage comprises a zeolite catalyzed hydration and etherification of propene employing a minimum of water feed. The second stage converts unconverted propene from the first stage reactor by hydration and etherification to DIPE in contact with an acidic catalyst, preferably acidic resin, and an excess of water. Isopropanol (IPA) from both the first and second stage reactor is recovered as an aqueous azeotrope by a combination of distillation and extraction steps and the azeotrope is recycled to the first stage reactor. In this way, IPA rather than propene is recycled and the advantageous capabilities of the first stage zeolite catalyst for IPA etherification to DIPE are more fully utilized in that reactor.
摘要翻译： 公开了用于从丙烯和水进料流酸催化生产DIPE的改进方法，其消除了烯烃水合反应器的丙烯再循环流并实现高丙烯转化率。 通过在两个阶段中进行水合和醚化反应来实现这一成就，其中第一阶段包括采用最小水分进料的沸石催化水合和丙烯醚化。 第二阶段通过水合和醚化将未转化的丙烯从第一级反应器转化为与酸性催化剂，优选酸性树脂和过量水接触的DIPE。 通过蒸馏和萃取步骤的组合将来自第一和第二阶段反应器的异丙醇（IPA）作为含水共沸物回收，并将共沸物再循环至第一级反应器。 以这种方式，IPA而不是丙烯被再循环，并且在该反应器中更充分地利用了用于DIPE的IPA醚化的第一阶段沸石催化剂的有利能力。
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公开(公告)号：US5154818A
公开(公告)日：1992-10-13
申请号：US749483
申请日：1991-08-15
申请人： Mohsen N. Harandi , Hartley Owen
发明人： Mohsen N. Harandi , Hartley Owen
CPC分类号： C10G51/026 , C10G11/18
摘要： Methods for the fluidized catalytic cracking of plural hydrocarbon feedstocks in a riser reactor are disclosed. The processes generally comprises contacting a relatively light hydrocarbon feedstock in a first reaction zone with a first catalyst stream comprising spent catalyst, contacting a relatively heavy hydrocarbon feedstock in a second reaction zone with a second catalyst stream comprising freshly regenerated catalyst, and introducing at least a portion of the effluent from the first reaction zone into the second reaction zone. The first reaction zone and the second reaction zone preferably comprise first and second riser reaction zones, respectively.
摘要翻译： 公开了用于在提升管反应器中的多种烃原料的流化催化裂化的方法。 该方法通常包括使第一反应区中的相对轻的烃原料与包含废催化剂的第一催化剂流接触，使第二反应区中的相对重的烃原料与包含新鲜再生的催化剂的第二催化剂流接触，并引入至少一种 部分流出物从第一反应区进入第二反应区。 第一反应区和第二反应区优选分别包括第一和第二提升管反应区。
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公开(公告)号：US5154801A
公开(公告)日：1992-10-13
申请号：US527973
申请日：1990-05-24
CPC分类号： C07C41/05 , C07C41/06 , Y10S203/90
摘要： In the diisopropyl ether production process, the distallation step for the separation of aqueous IPA recovered from the DIPE extraction operations is modified to avoid carrying out the distillation under conditions that yield IPA-water azeotrope providing lower overall process cost. The determination has been made that the overhead and bottom streams form an aqueous IPA fractionation process operated under off-azeotrope conditions in DIPE production can be recycled, respectively, to the DIPE reactor and extractor operations. Recycling the water and IPA overhead mixture eliminates the requirement for adding fresh water to the DIPE reactor. Returning the water and IPA bottom stream to the extractor reduces the requirement for distilled water addition to the extraction step. As a consequence, a less complex and costly aqueous IPA separation process is implemented.
摘要翻译： 在二异丙醚制备方法中，从DIPE萃取操作中回收的IPA水分离的分离步骤被修改，以避免在产生IPA-水共沸物的条件下进行蒸馏，提供较低的总体工艺成本。 已经确定了在DIPE生产中在脱共沸条件下操作的塔顶馏出物和底部物流形成的水性IPA分馏方法可以分别再循环到DIPE反应器和萃取器操作中。 回收水和IPA塔顶混合物消除了向DIPE反应堆添加淡水的要求。 将水和IPA底部物流返回到萃取器中，降低了萃取步骤中除去蒸馏水的要求。 因此，实现了较不复杂和昂贵的IPA分离过程。
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公开(公告)号：US5151393A
公开(公告)日：1992-09-29
申请号：US689570
申请日：1991-04-23
申请人： Mohsen N. Harandi , Hartley Owen
发明人： Mohsen N. Harandi , Hartley Owen
CPC分类号： C10G3/49 , B01J29/06 , B01J29/90 , B01J38/02 , B01J38/10 , C10G3/50 , C10G3/57 , C10G3/62 , C10G2300/1037 , C10G2300/1088 , C10G2300/4093 , C10G2300/701 , C10G2400/02 , C10G2400/20 , Y02P30/20
摘要： The invention comprises the discovery has been made that the reactivation of spent medium pore, shape selective metallosilicate catalyst particles can be enhanced by carrying out the removal of deactivating coke and carbonaceous deposits on the surface and within the pores of the catalyst using hydrogen in a two stage process. The first stage consists of reactivation with hydrogen at elevated temperature and relatively high pressure to crack, strip and remove the more volatile deactivating coke and carbonaceous components on the catalyst surface. The second stage of the reactivation process is carried out at low pressure and elevated temperature, leading to the stripping of the deactivating carbonaceous residue of low volatility on the catalyst surface and pores. The effect of the two stage regeneration process is to improve the removal of coke and carbonaceous materials from the catalyst surface, pores and voids providing a more effective reactivated catalyst.
摘要翻译： 本发明包括已经发现，通过在二氧化碳中使用氢气在催化剂的表面和催化剂的孔内进行去活化的焦炭和碳质沉积物，可以增强废中孔，形状选择性金属硅酸盐催化剂颗粒的再活化 阶段过程。 第一阶段包括在升高的温度下与氢的再活化和相对高的压力来裂解，剥离和除去催化剂表面上更易挥发的失活焦炭和碳质组分。 再活化过程的第二阶段在低压和升高的温度下进行，导致催化剂表面和孔隙上低挥发性的失活碳质残渣的汽提。 两级再生方法的作用是改善从催化剂表面，孔和空隙中除去焦炭和碳质材料，从而提供更有效的再活化催化剂。
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公开(公告)号：US5113024A
公开(公告)日：1992-05-12
申请号：US711768
申请日：1991-06-07
申请人： Mohsen N. Harandi , Hartley Owen
发明人： Mohsen N. Harandi , Hartley Owen
摘要： In the instant invention the effluent from the DIPE reactor is separated in a novel separation process that includes, in one embodiment, two extraction steps serially combined to initially separate IPA from the reaction products by extraction with water. The aqueous IPA extract is separated in a second extraction step carried out using the C.sub.3 hydrocarbon feedstream to the process as extractor. To effectuate the separation of aqueous IPA, the second extraction is carried out at a temperature higher than that of the first extraction step. The organic phase from the first extraction containing DIPE, C.sub.3 hydrocarbons and water is separated in a splitter to provide dry DIPE as product. In another embodiment dry DIPE is produced by an initial aqueous extraction of the reaction effluent followed by distillation to separate C.sub.3 hydrocarbons and water overhead and DIPE as a bottom stream.
摘要翻译： 在本发明中，来自DIPE反应器的流出物在新的分离过程中分离，在一个实施方案中，包括两个提取步骤，其连续组合以通过用水萃取最初将IPA与反应产物分离。 在使用C3烃进料流进行的第二提取步骤中将IPA水溶液提取物作为萃取器进行分离。 为了实现IPA水溶液的分离，第二次萃取在高于第一萃取步骤的温度下进行。 来自含有DIPE，C3烃和水的第一次萃取的有机相在分离器中分离以提供干DIPE作为产物。 在另一个实施方案中，通过对反应流出物的初始水提取产生干燥DIPE，然后蒸馏以分离C3烃和水塔顶馏出物和作为底部物流的DIPE。
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59.发明授权Integrated products separation from fluid catalytic cracking and aromatization processes 失效集成产品与流体催化裂化和芳构化过程分离
公开(公告)号：US5110446A
公开(公告)日：1992-05-05
申请号：US579417
申请日：1990-09-07
申请人： Mohsen N. Harandi , Hartley Owen
发明人： Mohsen N. Harandi , Hartley Owen
摘要： The present invention provides a process for decreasing the energy consumption of a catalytic cracking process product recovery section while improving gasoline yield by integrating multistage vapor compression and product recovery with deacidification and conversion of C.sub.2 -C.sub.4 aliphatics to C.sub.5 + normally liquid hydrocarbons.
摘要翻译： 本发明提供了一种通过将多级蒸气压缩和产物回收与C2-C4脂族烃与C5 +通常液体烃的脱酸和转化相结合来提高催化裂化产物回收段的能量消耗同时提高汽油产率的方法。
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60.发明授权
公开(公告)号：US5102428A
公开(公告)日：1992-04-07
申请号：US424421
申请日：1989-10-20
申请人： Hartley Owen , Mohsen N. Harandi
发明人： Hartley Owen , Mohsen N. Harandi
IPC分类号： C07C41/05 , C07B61/00 , C07C1/20 , C07C2/00 , C07C41/06 , C07C41/09 , C07C43/04 , C10G1/00 , C10G3/00 , C10L1/02
CPC分类号： C10L1/023 , C07C1/20 , C07C2/00 , C07C41/06 , C07C2529/40 , Y02P20/125 , Y02P30/20
摘要： A process is disclosed for integrating etherification to produce diisopropyl ether (DIPE) with processes to convert oxygenates and hydrocarbons to gasoline boiling range hydrocarbons in a manner which eliminates the requirement to recycle unreacted C.sub.3 hydrocarbons to the DIPE etherification zone. In the novel integrated process the unreacted C.sub.3 hydrocarbons are separated as vapor and passed to a conversion zone in contact with acidic metallosilicate catalyst. Depending on the conversion conditions the unreacted C.sub.3 hydrocarbons are converted to gasoline, distillate and/or aromatics, preferably in conjunction with additional feedstock containing lower oxygenates, olefins or paraffins. Also, isopropanol (IPA) and minor by-product dimers and trimers of propene from the DIPE reaction are separated and passed as a feedstream to the oxygenates and hydrocarbon conversion zone. In one embodiment, the water feedstream for the DIPE reactor is first passed to the DIPE effluent high pressure separator where it serves to extract a portion of the IPA in the effluent stream. The aqueous effluent from the high pressure separator is then introduced into the etherification zone for hydration of propene and etherification to form DIPE.
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