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公开(公告)号：US5003118A
公开(公告)日：1991-03-26
申请号：US459402
申请日：1989-12-29
CPC分类号： C10G65/08
摘要： The benzene content in a gasoline pool is reduced by a process that hydrogenates a benzene-containing isomerization zone feedstream. In addition to reducing the benzene concentration, the hydrogenation zone is also used to heat the isomerization zone feed and thereby eliminate the need for an isomerization zone heater. The process employs mild saturation conditions which eliminates hydrocracking and prevents the loss of isoparaffin yield. Additional cyclic hydrocarbons produced by the saturation of benzene can be processed in the isomerization zone for ring opening to increase the available paraffinic feedstock or the isomerization zone can be operated to pass the cyclic hydrocarbons through to a product recovery section.
摘要翻译： 通过使含苯异构化区进料流氢化的方法，汽油池中的苯含量降低。 除了降低苯浓度外，氢化区也用于加热异构化区进料，从而不需要异构化区加热器。 该方法采用温和的饱和条件，其消除加氢裂化并防止异构烷烃产率的损失。 通过饱和苯产生的附加环状烃可以在用于开环的异构化区中加工，以增加可用的链烷烃原料，或者异构化区域可以操作以将环状烃通过到产物回收部分。
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公开(公告)号：US5922923A
公开(公告)日：1999-07-13
申请号：US723208
申请日：1996-09-27
IPC分类号： C10G35/095 , C10G61/06 , C07C15/00 , C07C2/52 , C10G35/04
CPC分类号： C10G61/06 , C10G35/095
摘要： The feedstock to an aromatization process is processed by a selective adsorption step to remove hydrocarbon species, particularly indan, which have a severe adverse effect on aromatization catalyst stability. The feedstock preferably is a paraffinic raffinate from aromatics extraction. The intermediate from the adsorption step is particularly suitable for the selective conversion of paraffins to aromatics using a high-activity dehydrocyclization catalyst with high aromatics yields and long catalyst life.
摘要翻译： 通过选择性吸附步骤处理芳构化方法的原料以除去对芳构化催化剂稳定性具有严重不利影响的烃类，特别是茚满。 原料优选是来自芳烃萃取的链烷烃提余液。 来自吸附步骤的中间体特别适用于使用高芳族化合物产率和较长催化剂寿命的高活性脱氢环化催化剂将石蜡选择性转化为芳族化合物。
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公开(公告)号：US5792338A
公开(公告)日：1998-08-11
申请号：US567663
申请日：1995-12-05
IPC分类号： C10G35/095 , C10G45/64 , C10G59/02 , C10G35/85
CPC分类号： C10G35/095 , C10G45/64 , C10G59/02
摘要： A hydrocarbon feedstock is catalytically reformed in a sequence comprising a continuous-reforming zone associated with continuous catalyst regeneration, a zeolitic-reforming zone containing a catalyst comprising a platinum-group metal and a nonacidic L-zeolite and an aromatics-isomerization zone containing a catalyst comprising a platinum-group metal, a metal attenuator and a refractory inorganic oxide. The process combination features high selectivity in producing a high-purity BTX product from naphtha.
摘要翻译： 烃原料以包含与连续催化剂再生相关联的连续重整区的序列催化重整，含有包含铂族金属和非酸性L-沸石的催化剂的沸石重整区和含有催化剂的芳族化合物异构化区 包括铂族金属，金属衰减剂和耐火无机氧化物。 该方法组合在生产来自石脑油的高纯度BTX产品时具有高选择性。
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公开(公告)号：US5453552A
公开(公告)日：1995-09-26
申请号：US109558
申请日：1993-08-20
摘要： An advantageous integration of benzene saturation for a light paraffin containing feedstock in a light paraffin isomerization and adsorption system maintains isomerization conversion while reducing benzene levels. The process improves the efficiency of the isomerization and saturation zones by saturating benzene from a light paraffin containing stream and adsorbing normal hydrocarbons from the saturation zone effluent stream together with normal hydrocarbons from an isomerization zone effluent. The isomerization zone effluent comprises converted hydrocarbons from a light paraffin containing feedstream having a relatively low benzene concentration. Saturating the high benzene feed in a first step of saturation and passing the low benzene containing feedstream through the isomerization zone independent of the benzene saturation removes normal hydrocarbons from the isomerization step to improve equilibrium and provides a gaseous phase for desorption and a heavier hydrocarbon phase for adsorption to improve product recovery and normal paraffin recovery.
摘要翻译： 在轻链烷烃异构化和吸附系统中，对于含轻链烷烃原料的苯饱和有利的整合保持异构化转化同时降低苯含量。 该方法通过从含有轻链烷烃的物流中饱和苯和从饱和区流出物流以及来自异构化区流出物的正常烃吸附正常烃来提高异构化和饱和区的效率。 异构化区流出物包含来自含有较低苯浓度的轻链烷烃进料流的转化烃。 饱和高苯进料在第一步饱和并使低含苯原料流通过异构化区独立于苯饱和，除去来自异构化步骤的正常烃，以改善平衡并提供气相用于解吸和较重的烃相用于 吸附以改善产物回收和正常的石蜡回收。
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公开(公告)号：US5004859A
公开(公告)日：1991-04-02
申请号：US435304
申请日：1989-11-13
CPC分类号： B01J23/42 , B01J27/08 , B01J37/0201 , C07C5/226 , C10G35/085 , C10G45/62 , C07C2521/04 , C07C2523/40 , C07C2527/08 , C07C2527/126
摘要： An improved catalyst particle is disclosed for the conversion of hydrocarbons which comprises a refractory inorganic-oxide support, a Friedel-Crafts metal halide, and a surface-layer platinum-group metal component, wherein the concentration of platinum-group metal component on the surface layer of each catalyst particle is at least 1.5 times the concentration in the central core of the catalyst particle. An isomerization process also is disclosed which is particularly effective for the conversion of C.sub.4 -C.sub.7 alkanes.
摘要翻译： 公开了一种改进的催化剂颗粒，用于转化烃，其包含耐火无机氧化物载体，Friedel-Crafts金属卤化物和表面层铂族金属组分，其中表面上的铂族金属组分的浓度 每个催化剂颗粒的层是催化剂颗粒的中心核心浓度的至少1.5倍。 公开了对C4-C7烷烃的转化特别有效的异构化方法。
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公开(公告)号：US5472593A
公开(公告)日：1995-12-05
申请号：US194964
申请日：1994-02-14
IPC分类号： C10G35/095 , C10G45/64 , C10G59/02 , C10G35/09
CPC分类号： C10G59/02 , C10G35/095 , C10G45/64
摘要： A hydrocarbon feedstock is catalytically reformed in a sequence comprising a reforming zone containing a catalyst comprising a platinum-group metal and a nonacidic L-zeolite and an aromatics-isomerization zone containing a catalyst comprising a platinum-group metal, a metal attenuator and a refractory inorganic oxide. The process combination features high selectivity in producing a high-purity BTX product from naphtha.
摘要翻译： 烃原料以包含含有铂族金属和非酸性L-沸石的催化剂的重整区域和含有包含铂族金属，金属衰减剂和耐火材料的催化剂的芳族化合物 - 异构化区域的顺序催化重整 无机氧化物。 该方法组合在生产来自石脑油的高纯度BTX产品时具有高选择性。
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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。
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公开(公告)号：US5107052A
公开(公告)日：1992-04-21
申请号：US636646
申请日：1990-12-31
CPC分类号： C10G61/06 , C07C5/2767 , C07C7/13 , C07C9/00 , C10G25/03
摘要： The invention relates to the production of high octane fuels including a process for separating the high octane components for the gasoline pool from lower octane components, which are recycled to an isomerization reaction by adsorptively separating dimethyl paraffins from an isomerate with an aluminophosphate zeolite and SSZ-24, an all-silica zeolite adsorbent isostructural with AIPO.sub.4 -5, and a C.sub.6-10 normal paraffin desorbent. The lower octane components of the isomerate, normal paraffins and mono-branched paraffins, are recycled to the isomerization reaction zone for further conversion to multi-branched paraffins. The useful aluminophosphates are SAPO-5, AIPO.sub.4 -5 MgAPO-5 and MAPSO-5.
摘要翻译： 本发明涉及高辛烷值燃料的生产，包括通过用磷酸铝沸石和SSZ-沸石从异构体中吸附分离二甲基链烷烃而再循环到异构化反应中将汽油池的高辛烷值成分从低级辛烷成分中分离出来的方法， 24，与AIPO4-5同构结构的全硅沸石吸附剂和C6-10正常石蜡解吸剂。 异构体，正链烷烃和单支链烷烃的低辛烷值组分被再循环到异构化反应区，用于进一步转化为多支链链烷烃。 有用的磷酸铝是SAPO-5，AIPO4-5 MgAPO-5和MAPSO-5。
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9.发明授权Separation system for C.sub.4 hydrotreater effluent having reduced hydrocarbon loss 失效具有降低碳氢化合物损失的C4加氢处理器流出物的分离系统
公开(公告)号：US5045175A
公开(公告)日：1991-09-03
申请号：US600790
申请日：1990-10-22
IPC分类号： C10G67/06
CPC分类号： C10G67/06
摘要： A hydrotreating process uses a separation section that reduces the loss of C.sub.4 and higher hydrocarbons through the use of a low hydrogen to hydrocarbon ratio in the reactor and the adsorptive removal of a majority of hydrogen sulfide from a liquid phase hydrotreater effluent. Sulfurous hydrocarbon feed is admixed with hydrogen to maintain a hydrogen to hydrocarbon ratio of less than 50 SCFB. The hydrogen and hydrocarbons are passed through a hydrotreater reactor to convert sulfur compounds to H.sub.2 S. The hydrotreater effluent is cooled and after flashing of any excess hydrogen or light ends the cooled effluent is contacted with an adsorbent material for the removal of H.sub.2 S. A hydrotreated hydrocarbon product is withdrawn from the adsorption section. The low hydrogen to hydrocarbon ratio permits the process to be used without the recycle of hydrogen thereby eliminating the need for separators and compressors that were formly used to recycle hydrogen to the hydrotreater. The elimination of the recycle and the low hydrogen to hydrocarbon ratio simplifies the flowscheme which can use a simple separator to flash light ends, hydrogen and some H.sub.2 S from the hydrotreater effluent. This process thus eliminates the need for a stripping section that was formerly needed to remove light ends and hydrogen sulfide from the hydrotreated product. The adsorptive removal of the H.sub.2 S and the limited venting of hydrogen allows essentially all of the hydrotreated product to be preserved. In most flowschemes H.sub.2 S removal can be carried out in the adsorbers that are usually present for drying of the hydrotreated feed.
摘要翻译： 加氢处理方法使用分离段，其通过在反应器中使用低的氢烃比例降低C4和高级烃的损失，并从液相加氢处理器流出物中吸附除去大部分硫化氢。 亚硫酸烃进料与氢气混合以保持氢与烃的比例小于50SCFB。 氢气和烃通过加氢处理反应器将硫化合物转化为H 2 S。 加氢处理器流出物被冷却并且在闪蒸过量的氢气或轻馏分之后，冷却的流出物与用于除去H 2 S的吸附材料接触。 加氢处理的烃产物从吸附段中排出。 低氢烃比可以使得该方法不用氢再循环使用，从而消除了对正式用于将氢循环到加氢处理塔中的分离器和压缩机的需要。 循环利用和低氢烃比的消除简化了可以使用简单分离器从加氢处理器流出物中闪蒸轻馏分，氢气和一些H 2 S的流程。 因此，该方法不需要先前需要从加氢处理的产物中除去轻馏分和硫化氢的汽提部分。 H2S的吸附去除和氢的有限排放允许基本上所有的加氢处理产物被保存。 在大多数流程中，可以在通常用于干燥加氢处理的进料的吸附器中进行H 2 S的去除。
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公开(公告)号：US5043525A
公开(公告)日：1991-08-27
申请号：US560655
申请日：1990-07-30
CPC分类号： C10L1/06 , C10G61/06 , C10G2400/02
摘要： A combination isomerization and liquid phase adsorptive separation process is given increased efficiency and cost effectiveness while also improving the product quality by eliminating the columns for the separation of desorbent material from extract and raffinate streams. In this arrangement a C.sub.5 + naphtha stream is split into a heavy hydrocarbon stream comprising normal hexane and higher boiling hydrocarbons and an isomerization zone feedstream comprising isohexane and lower boiling hydrocarbons. The heavy hydrocarbon stream goes directly to a deisohexanizer column. The isomerization zone feedstream is combined with an excess desorbent stream and the extract stream from an adsorptive separation section to form a combined feed. Hydrocarbons in the combined feed are isomerized and after stabilization pass directly into the adsorption section. In the adsorption section, normal pentanes are selectively adsorbed on an adsorbent material, and a raffinate stream comprising desorbent and isoparaffins is passed to the deisohexanizer column and supplies the desorbent for the adsorption section. Any desorbent in excess of that required for the adsorption section is combined with the isomerization zone feed. The extract stream that is combined with the isomerization zone feed is recovered from adsorption section. A bottoms stream comprising C.sub.7 and higher boiling hydrocarbons is withdrawn from the bottom of the deisohexanizer column. A high octane isomerate is taken overhead from the deisohexanizer as a product stream.
摘要翻译： 提供组合异构化和液相吸附分离方法提高了效率和成本效益，同时通过消除用于从萃取液和萃余液流中分离解吸剂材料的柱来提高产品质量。 在这种布置中，将C5 +石脑油流分解成包含正己烷和较高沸点烃的重质烃流以及包含异己烷和低沸点烃的异构化区进料流。 重质烃流直接进入脱乙烷塔。 异构化区进料流与过量的解吸剂流和来自吸附分离部分的萃取物流组合以形成组合进料。 合并的进料中的烃异构化，稳定后直接进入吸附段。 在吸附部分，常规的戊烷被选择性地吸附在吸附剂材料上，并且包含解吸剂和异链烷烃的萃余液流被送到脱乙烷塔中并提供用于吸附段的解吸剂。 超过吸附段所需的任何解吸剂与异构化区进料组合。 与异构化区进料结合的萃取物流从吸附段回收。 包含C7和更高沸点烃的底部物流从脱乙酸塔的底部排出。 作为产物流，从脱乙酸酯塔顶馏去高辛烷异构体。
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