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公开(公告)号：US08910495B2
公开(公告)日：2014-12-16
申请号：US13528332
申请日：2012-06-20
申请人： John Mak
发明人： John Mak
CPC分类号： F25J3/0238 , C10G5/04 , C10G5/06 , C10G2300/4056 , C10L3/10 , C10L3/12 , F25J3/0209 , F25J3/0233 , F25J3/0242 , F25J3/0295 , F25J2200/04 , F25J2200/40 , F25J2200/74 , F25J2200/76 , F25J2200/78 , F25J2205/04 , F25J2210/06 , F25J2240/02 , F25J2245/02 , F25J2280/02 , F25J2290/80 , Y10T29/49352 , Y10T29/53113
摘要： Devices and methods for retrofitting a natural gas liquids plant are contemplated to extend recovery of C3+ hydrocarbons from various feed gases to recovery of C2+ and C3+ hydrocarbons. In especially preferred aspects, dedicated C2+ exchangers are integrated to exclusively cool the feed gas to produce a cooled absorber feed and to produce two separate absorber reflux streams. During C2+ recovery, absorber reflux is provided by a portion of the residue gas and a portion of the feed gas, while during C3+ recovery absorber and distillation column reflux are provided by the distillation column overhead product.
摘要翻译： 预期用于改装天然气液体装置的装置和方法可以将C3 +烃从各种进料气体回收到C2 +和C3 +烃的回收。 在特别优选的方面，集成了专用的C2 +交换器以独特地冷却进料气体以产生冷却的吸收剂进料并产生两个单独的吸收回流。 在C2 +回收期间，一部分残余气体和一部分进料气体提供吸收剂回流，而在C3 +回收吸收塔和蒸馏塔回流期间由蒸馏塔塔顶产物提供。
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公开(公告)号：US07452458B2
公开(公告)日：2008-11-18
申请号：US11194592
申请日：2005-08-02
申请人： Eric Sanchez , Béatrice Fischer
发明人： Eric Sanchez , Béatrice Fischer
摘要： Process for treatment of a hydrocarbon feedstock that comprises a hydrocarbon-containing liquid phase and hydrogen, in which the feedstock is separated under a pressure P1 into a liquid L1 and a gas G1, that is compressed and brought into contact with a portion of L1 under a pressure P2>2×P1 to recover a liquid L2 and a hydrogen-rich gas G2; L2 is fractionated to obtain a stabilized liquid L4a that is free of LPG and lighter products, a liquid stream of LPG, and a gas stream G4 that is recycled, and in which one of gas streams: recompressed G1 and G4 is in counter-current contact with an unstabilized liquid AL that is obtained from or extracted from L1 or L2, whereby this unstabilized liquid is supercooled by at least 10° C. below its bubble point at pressure P2.
摘要翻译： 用于处理包含含烃液相和氢气的烃原料的方法，其中原料在压力P 1下分离成液体L 1和气体G 1，其被压缩并与部分 的L 1在压力P 2> 2×P 1下回收液体L 2和富氢气体G 2; 将L 2分馏以获得不含LPG和较轻产物，液化石油气流和循环的气流G 4的稳定液体L 4 a，其中气流中的一种：再压缩G 1和G 4与从L 1或L 2获得或从L 1或L 2中提取的未稳定液体AL逆流接触，由此将该不稳定液体在压力P 2下低于其起泡点至少10℃。
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公开(公告)号：US5462583A
公开(公告)日：1995-10-31
申请号：US206420
申请日：1994-03-04
申请人： Glenn C. Wood , Yuv R. Mehra
发明人： Glenn C. Wood , Yuv R. Mehra
CPC分类号： B01D53/14 , B01D53/1493 , C01B3/52 , C07C7/11 , C10G5/04 , C10L3/10 , F25J3/0209 , F25J3/0233 , F25J3/0238 , F25J3/0257 , F25J3/029 , C01B2203/0415 , C01B2203/0495 , F25J2205/02 , F25J2205/04 , F25J2205/50 , F25J2245/02 , F25J2270/04
摘要： An absorption process for separating a feed gas stream having components with a spectrum of volatilities including volatile (light) components, intermediate volatility components, and least volatile (heavy) components. The disclosed process includes the steps of: (1) contacting the feed gas stream with a liquid lean solvent stream in an absorber to produce a light product gas stream that is composed of predominantly light components and a rich solvent stream containing most of the intermediate and heavy components; (2) flashing the rich solvent stream at reduced pressure in a flash zone to produce an intermediate product gas stream composed predominantly of intermediate components and a lean solvent stream; (3) conveying the lean solvent stream from the flashing zone to the absorber, wherein the lean solvent is composed predominantly of heavy components taken from the feed; the process does not use an external lean solvent. The process is particularly useful for rejecting nitrogen from natural gas and for recovering hydrogen from refinery and petrochemical process off-gases.
摘要翻译： 用于分离具有包含挥发性（轻）组分，中等挥发性组分和最不易挥发（重））组分的挥发性谱的组分的进料气流的吸收方法。 所公开的方法包括以下步骤：（1）将进料气流与吸收器中的液体贫溶剂流接触，以产生轻质产物气流，其主要由轻组分和富溶剂流组成，所述富溶剂流含有大部分中间体和/ 重部件; （2）在闪蒸区中减压蒸发富溶剂流以产生主要由中间组分和贫溶剂流组成的中间产物气流; （3）将稀溶剂流从闪蒸区输送到吸收器，其中贫溶剂主要由从进料中取出的重组分组成; 该方法不使用外部贫溶剂。 该方法特别适用于从天然气中排出氮气并从炼油厂和石油化学工艺废气中回收氢气。
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公开(公告)号：USH1185H
公开(公告)日：1993-05-04
申请号：US862877
申请日：1992-04-03
IPC分类号： C10G5/04
CPC分类号： C10G5/04 , C10G2300/1025
摘要： A process for removing diamondoids from a stream of natural gas. In this process, contact between a solvent liquid and natural gas containing diamondoids occurs in a stepwise counter current cascaded fashion. The stepwise counter-current cascaded arrangement substantially improves the removal of the light diamondoids (adamantane). The contacting (mixing) of the gas and solvent liquid allows the liquid to absorb the diamondoids contained in the gas. The gas and liquid are then separated thereby removing the diamondoids from the gas. In the preferred embodiment, a multi -staged trayed solvent contractor tower is used to facilitate the stepwise counter current cascaded contacting in the gas production process immediately after the separation of the gas from any liquid in the gas. The partially saturated diamondoid liquid solvent from the tower can also be mixed with the gas at a point before the separation of the gas from any reservoir formation liquid in order to enhance the diamondoid removal process.
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公开(公告)号：US4883515A
公开(公告)日：1989-11-28
申请号：US102350
申请日：1987-09-29
申请人： Yuv R. Mehra , Freylon B. Coffey
发明人： Yuv R. Mehra , Freylon B. Coffey
CPC分类号： C10L3/10 , B01D53/1487 , B01D53/1493 , C01B21/0488 , C01B3/52 , C07C7/11 , C10G5/04 , C01B2210/007 , C10G2300/1025
摘要： A continuous process is disclosed for separating components of a hydrocarbon gas stream which are selected from the group consisting of methane, ethane, higher saturated hydrocarbons, and mixtures thereof by countercurrently contacting the hydrocarbon gas stream with a physical solvent selected from the group consisting of:(1) paraffinic solvents having molecular weights ranging from 75 to 140 and UOP characterization factors ranging from 12.0 to 13.5, these factors being independent of the aromatic content of the paraffinic solvents,(2) naphthenic solvents having molecular weights ranging from 75 to 130 and UOP characterization factors ranging from 10.5 to 12.0, these factors being independent of the aromatic content of the naphthenic solvents, and(3) benzene and toluene,to produce an overhead stream which is rich in methane and a rich solvent bottoms stream and then recovering the lean physical solvent and a C.sub.2 + hydrocarbons product from the rich solvent bottoms stream and recycling the recovered solvent stream to the contacting step.
摘要翻译： 公开了一种连续的方法，用于通过将烃气流与选自以下的物理溶剂逆流接触来分离选自甲烷，乙烷，较高级饱和烃及其混合物的烃气流的组分： （1）分子量范围为75至140，UOP表征因子范围为12.0至13.5的石蜡溶剂，这些因素与石蜡溶剂的芳族含量无关，（2）分子量范围为75至130的环烷烃溶剂和 UOP表征因子范围为10.5〜12.0，这些因素与环烷溶剂的芳香族含量无关，（3）苯和甲苯，产生富含甲烷和富溶剂塔底物流的塔顶物流，然后回收 稀的物理溶剂和来自富溶剂底部物流和回收物的C2 +烃产物 将回收的溶剂流转移到接触步骤。
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公开(公告)号：US4743282A
公开(公告)日：1988-05-10
申请号：US854383
申请日：1986-04-21
申请人： Yuv R. Mehra
发明人： Yuv R. Mehra
CPC分类号： C10L3/10 , C07C7/11 , C10G5/04 , C10G2300/1025
摘要： A gas-liquid extractive stripping process is disclosed which uses at least one preferential physical solvent in at least one solvent loop, each loop passing through at least two unit operations: extractive-stripping and distillation. At least the first extractive-stripping operation may additionally comprise a rectification section on top of the extraction section. Three products are made from streams of thermally cracked gases or refinery gases: a hydrogen-rich gas stream, a methane-rich gas stream, and a C.sub.2 =+ hydrocarbons stream which is the feed stream for the conventional fractionation train of an olefins manufacturing facility. Ethylene can be economically produced from the C.sub.2 =+ hydrocarbons product stream at a recovery of at least 99.5% and a purity of at least 99.9%.
摘要翻译： 公开了一种气液萃取汽提方法，其在至少一个溶剂回路中使用至少一种优先物理溶剂，每个环路通过至少两个单元操作：萃取 - 汽提和蒸馏。 至少第一提取 - 剥离操作可另外包括在提取部分顶部的整流部分。 三种产品由热裂解气体或炼油厂气体制成：富氢气流，富甲烷气流和C2 = +烃流，其为烯烃制造设备常规分馏系列的进料流 。 乙烯可以从C2 = +烃产物流经济地生产，回收率至少为99.5％，纯度至少为99.9％。
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公开(公告)号：US4578094A
公开(公告)日：1986-03-25
申请号：US637210
申请日：1984-08-03
申请人： Yuv R. Mehra
发明人： Yuv R. Mehra
CPC分类号： C10L3/10 , B01D53/263 , C07C7/11 , C10G5/04 , C10G2300/1025 , Y02C20/20
摘要： A stream of natural gas, which is rich in C.sub.5 + hydrocarbons and may be wet or dry or sweet or sour, is extracted in two stages with a physical solvent. In the first stage, a major portion of the solvent, containing up to an equilibrium amount of C.sub.5 + hydrocarbons, removes substantially all of the water and the C.sub.2 + hydrocarbons. In the second stage, the partially stripped natural gas is countercurrently extracted with a lean-and-dry minor portion of the solvent which contains less than 1% by weight of water and less than 1% by volume of hydrocarbons. The residue natural gas, which is then sent to a pipeline, contains less than 7 pounds of water per million standard cubic feet. The rich solvent is flashed to atmospheric pressure in at least two stages, forming a methane-rich vapor portion which is suitably recycled to the first extraction, a methane-poor vapor portion, and a flashed solvent containing up to equilibrium amounts of C.sub.5 + hydrocarbons. The methane-poor vapor portion is compressed, cooled, and condensed to form a liquid stream which is selectively stripped of C.sub.1, C.sub.1 +C.sub. 2, C.sub.1 +C.sub.2 +C.sub.3 or C.sub.1 +C.sub.2 +C.sub.3 +C.sub.4 to form a liquid hydrocarbon product of selected composition based on market economics. A slipstream of the flashed solvent, containing the amount of water picked up from the natural gas stream and amounting to less than 25% by weight of the flashed solvent, is all that needs to be regenerated to form the lean-and-dry minor portion.
摘要翻译： 富含C5 +烃并且可能是湿的或干的或甜的或酸的天然气流在两个阶段用物理溶剂萃取。 在第一阶段，大部分溶剂含有至多平衡量的C5 +烃，几乎除去了所有的水和C2 +烃。 在第二阶段中，部分汽提的天然气与含有小于1重量％水和小于1体积％烃的稀溶剂和少量干溶剂一起逆流萃取。 残余天然气，然后送到管道，每百万标准立方英尺含有少于7磅的水。 将富溶剂在至少两个阶段中闪蒸至大气压，形成富甲烷蒸气部分，其适当地循环到第一次萃取，甲烷不良蒸气部分和含有至多平衡量的C5 +烃的闪蒸溶剂。 无甲烷蒸汽部分被压缩，冷却和冷凝，形成液态物流，其被选择性地汽提出C1，C1 + C2，C1 + C2 + C3或C1 + C2 + C3 + C4，以形成液态烃产物 选择基于市场经济学的组合。 闪蒸溶剂的滑流含有从天然气流中吸收的水量少于闪蒸溶剂的25重量％，所有这些都需要再生以形成贫 - 干次要部分 。
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公开(公告)号：US4568452A
公开(公告)日：1986-02-04
申请号：US621190
申请日：1984-06-15
申请人： Robert P. Richmond
发明人： Robert P. Richmond
摘要： An absorbent hydrocarbonaceous oil comprising contaminants, such as sulfur and/or nitrogen, is upgraded by subjecting the contaminated absorbent oil to hydrorefining. The upgraded absorbent may be utilized again as absorbent.
摘要翻译： 通过对污染的吸收剂油进行加氢精制来提高包含诸如硫和/或氮的污染物的吸收性烃类油。 升级的吸收剂可以再次用作吸收剂。
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79.发明授权Process for extracting natural gas liquids from natural gas streams with physical solvents 失效用物理溶剂从天然气流中提取天然气液体的方法
公开(公告)号：US4511381A
公开(公告)日：1985-04-16
申请号：US507564
申请日：1983-06-24
申请人： Yuv R. Mehra
发明人： Yuv R. Mehra
CPC分类号： C10L3/10 , C07C7/11 , C10G5/04 , C10G2300/1025
摘要： A continuous process for selective countercurrent extraction of C.sub.2 + hydrocarbons from a natural gas stream with a physical solvent while at pipeline pressures to produce a residue natural gas stream meeting pipeline specifications and a liquid hydrocarbon product having a composition which can be readily adjusted to any selected degree in accordance with market conditions so that profitability of the extraction operation can be maximized at all times. The rich solvent is let down in pressure through successive flashing stages to produce a liquid product, and the stripped solvent is recirculated to the extraction step. The versatility of the process is achieved by using the following steps, in order of importance: (1) selectively varying the flow rate of the solvent with respect to the flow rate of the natural gas stream; (2) selectively varying the flashing pressure for one or more successive flashing stages; (3) recycling the flashed C.sub.1 + undesirable gases to the extraction step; and (4) rejecting selected components of the liquid product in a stripping column for the liquid hydrocarbon product by: (a) selectively varying the pressure in the column, and (b) selectively varying the temperature at the bottom of the column. The rejected components are also recycled to the extraction step and are C.sub.1, C.sub.1 +C.sub.2, C.sub.1 +C.sub.2 +C.sub.3, or C.sub.1 +C.sub.2 +C.sub.3 +C.sub.4. If water is present in significant quantities, the solvent is regenerated before recycling it to the extraction step.
摘要翻译： 一种用于在管道压力下从具有物理溶剂的天然气流中选择性逆流萃取C2 +烃的连续方法，以产生满足管道规格的残余天然气流和具有可以容易地调节至任何选定程度的组成的液体烃产物 根据市场情况，可以随时提取提取操作的盈利能力。 富溶剂通过连续闪蒸阶段降压，产生液体产物，汽提溶剂再循环至萃取步骤。 该方法的通用性通过以下重要的顺序使用以下步骤来实现：（1）相对于天然气流的流量选择性地改变溶剂的流速; （2）选择性地改变一个或多个连续闪光阶段的闪光压力; （3）将闪烁的C1 +不良气体循环到萃取步骤; 和（4）通过以下步骤排斥用于液体烃产物的汽提塔中的液体产物的选定组分：（a）选择性地改变塔中的压力，和（b）选择性地改变塔底部的温度。 被拒绝的组分也被回收到提取步骤，并且是C1，C1 + C2，C1 + C2 + C3或C1 + C2 + C3 + C4。 如果大量存在水，则在将溶液再循环到萃取步骤之前，将溶剂再生。
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公开(公告)号：US4431529A
公开(公告)日：1984-02-14
申请号：US429885
申请日：1982-09-30
申请人： Don B. Carson
发明人： Don B. Carson
CPC分类号： C10G11/185 , C10G5/04
摘要： An absorption process is disclosed for the recovery of normally liquid hydrocarbons from a gas stream. The process is useful in recovering hydrocarbons from the gas stream discharged by the main fractionation column of a fluidized catalytic cracking unit. The feed gas is compressed and passed through an absorption zone to produce a high pressure lean gas which is depressurized in a power recovery turbine. The turbine compresses air used within the catalyst regeneration zone of the fluidized catalytic cracking unit.
摘要翻译： 公开了用于从气流中回收正常液体烃的吸收方法。 该方法可用于从由流化催化裂化装置的主分馏塔排出的气流中回收烃。 进料气体被压缩并通过吸收区，以产生在功率回收涡轮机中减压的高压贫气体。 涡轮压缩流化催化裂化装置的催化剂再生区内使用的空气。
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