利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

160 条记录 (耗时 0.018 秒)

    Process for recovering olefins from cat-cracked gas without accumulating undesirable oxides of nitrogen
    21.
    发明授权
    Process for recovering olefins from cat-cracked gas without accumulating undesirable oxides of nitrogen 失效
    从催化裂化气体回收烯烃的方法，而不会积聚不需要的氮氧化物

    公开(公告)号：US5444176A

    公开(公告)日：1995-08-22

    申请号：US967835

    申请日：1992-10-28

    申请人： Dane C. Grenoble ,  Roy T. Halle ,  William D. Thomson

    发明人： Dane C. Grenoble ,  Roy T. Halle ,  William D. Thomson

    IPC分类号： C07C7/11 ,  B01D53/14 ,  B01D53/54 ,  C07C11/02 ,  C10G55/06 ,  C10G70/04 ,  C10G70/06 ,  F25J3/02 ,  C07C7/00 ,  F25J3/00

    CPC分类号： C10G70/041 ,  C10G70/06 ,  F25J3/0209 ,  F25J3/0219 ,  F25J3/0233 ,  F25J3/0238 ,  F25J3/0242 ,  F25J3/0247 ,  F25J3/0252 ,  F25J2205/50 ,  F25J2210/12 ,  F25J2215/62 ,  F25J2215/64 ,  F25J2220/02

    摘要： A safe, effective, and economical method is provided for recovering olefins from cat-cracked gases without accumulating dangerous amounts of nitrogen oxides. A stream of cat-cracked gas first is scrubbed to remove acid gases, including nitrogen dioxide (NO.sub.2), and then is passed through a depropanizer fractionation tower. Hydrocarbons having four or more carbon atoms are recovered in the bottoms of the depropanizer, and the overhead from the depropanizer--which is composed of hydrocarbons having three or fewer carbon atoms--is sent to an absorber demethanizer tower. Hydrocarbons having two or more carbon atoms are recovered in the bottoms from the absorber demethanizer tower, where temperatures are no lower than about -45.56.degree. C. (-50.degree. F.). The overhead from the absorber demethanizer tower--which is composed of methane, hydrogen, and trace amounts of nitrogen oxide, C.sub.2, and absorbent (C.sub.3)--then is chilled to condense and recover trace amounts of C.sub.2 and heavier gases, including trace amounts of the C.sub.3 absorbent, at temperatures of about -101.11.degree. C. (-150.degree. F.) or higher. Thus, recovery of desired hydrocarbons from the cat-cracked gas is conducted at temperatures that are high enough to prevent the oxidation of nitric oxide (NO) to form nitrogen dioxide (NO.sub.2) and high enough to prevent the accumulation of unwanted nitrogen oxides.

    摘要翻译： 提供了一种安全，有效和经济的方法来回收来自猫裂纹气体的烯烃，而不会累积危险的氮氧化物。 首先将一批猫裂纹气体洗涤以除去包括二氧化氮（NO2）在内的酸性气体，然后通过脱丙烷塔分馏塔。 具有四个或更多碳原子的碳氢化合物被回收到脱丙烷塔的底部，并且由脱丙烷化器（其由具有三个或更少碳原子的烃组成）的塔顶馏出物被送到吸收器脱甲烷塔。 具有两个或多个碳原子的烃在来自吸收器脱甲烷塔的塔底中回收，其中温度不低于约-45.56℃（-50°F）。 由甲烷，氢气和痕量的氮氧化物C2和吸收剂（C3）组成的吸收剂脱甲烷塔的塔顶馏出物冷凝并回收痕量的C2和较重的气体，包括痕量的 C3吸收剂，在约-101.11℃（-150°F）或更高的温度下。 因此，从破裂气体回收所需的烃是在足够高的温度下进行的，以防止一氧化氮（NO）氧化形成二氧化氮（NO 2），并且足够高以防止不想要的氮氧化物的积聚。

    PSA process for recovery or ethylene
    24.
    发明授权
    PSA process for recovery or ethylene 失效
    PSA回收过程或乙烯

    公开(公告)号：US5245099A

    公开(公告)日：1993-09-14

    申请号：US918480

    申请日：1992-07-22

    申请人： Michael J. Mitariten

    发明人： Michael J. Mitariten

    IPC分类号： C10G55/04 ,  C10G70/04

    CPC分类号： C10G70/046 ,  C10G55/04 ,  Y02P30/464

    摘要： A process is provided for the concentration and recovery of ethylene and heavier components from a hydrocarbon feedstream. A pressure swing adsorption (PSA) process is used to remove from hydrocarbon feedstream light cut comprising hydrogen, carbon monoxide, and methane and subsequently concentrate a heavy cut comprising the ethylene and heavy components in the PSA tail gas. In one aspect of the invention, an FCC off gas is separated into a light cut and a heavy cut and the heavy cut is routed to an ethylene plant. In another aspect of the invention, a C.sub.2 -rich stream is withdrawn from an ethylene plant and used to enhance the recovery of the ethylene and heavier stream in the PSA process and an ethylene-rich stream is returned to the ethylene plant.

    摘要翻译： 提供了一种从烃进料流中浓缩和回收乙烯和较重组分的方法。 使用变压吸附（PSA）方法从包含氢气，一氧化碳和甲烷的轻烃进料流中除去，随后将包含乙烯和重组分的重馏分浓缩在PSA尾气中。 在本发明的一个方面，FCC废气被分离成轻馏分和重馏分，重馏分被引导到乙烯装置。 在本发明的另一方面，从乙烯装置中取出富含C2的料流并用于增强PSA方法中乙烯和较重物流的回收，并且将富含乙烯的料流返回至乙烯装置。

    Inverted fractionation apparatus and use in a heavy oil catalytic cracking process
    25.
    发明授权
    Inverted fractionation apparatus and use in a heavy oil catalytic cracking process 失效
    反相分馏装置用于重油催化裂化工艺

    公开(公告)号：US5019239A

    公开(公告)日：1991-05-28

    申请号：US439755

    申请日：1989-11-21

    申请人： Hartley Owen

    发明人： Hartley Owen

    IPC分类号： B01J29/90 ,  C10G7/00 ,  C10G11/00 ,  C10G11/18 ,  C10G70/04

    CPC分类号： C10G11/18 ,  C10G7/00 ,  C10G70/041

    摘要： A process and apparatus for fractionation of a superheated vapor in a fractionation column is disclosed. A conventional fractionator, having an inlet for hot vapors at the base, and a plurality of products withdrawn via side draws is modified by physically inverting some parts of the column. The superheated vapors are charged to an upper portion of the column, to contact and vaporize a liquid fraction pumped up from a lower portion of the column. The vaporized liquid is discharged as a vapor fraction to the base of the column from which the liquid fraction was obtained. Superheated vapor fed to the column is fractionated, but in a fractionator in which the hottest part of the column is not in the base of the column. The inverted fractionator, when used in conjunction with a riser cracking FCC reactor, greatly reduces thermal cracking in a transfer line moving superheated, cracked vapor from the reactor to the fractionator. The inverted fractionator improves yields, and permits higher cracking reactor temperatures to be used.

    摘要翻译： 公开了一种用于在分馏塔中分馏过热蒸气的方法和装置。 通过物理反转塔的一些部分来改变常规分馏塔，其具有在基部处具有热蒸气的入口和通过侧拉取出的多个产品。 将过热蒸汽装入塔的上部，使从柱的下部抽出的液体馏分接触并汽化。 蒸发的液体作为蒸汽馏分排出到从其获得液体馏分的塔的底部。 进料到塔中的过热蒸气是分馏的，但在塔中最热的部分不在塔底部的分馏塔中。 当与提升管裂解FCC反应器结合使用时，反相分馏器大大减少了将过热的裂化蒸汽从反应器移动到分馏器的输送管线中的热裂解。 反相分馏器提高产率，并允许使用更高的裂化反应器温度。

    Process and plant for separation of a hydrocarbon mixture
    29.
    发明授权
    Process and plant for separation of a hydrocarbon mixture 有权

    公开(公告)号：US11919852B2

    公开(公告)日：2024-03-05

    申请号：US17044814

    申请日：2019-04-05

    申请人： LINDE GmbH

    发明人： Duc Tuat Pham ,  Benedikt Kurz

    IPC分类号： C07C7/00 ,  B01D3/14 ,  B01D5/00 ,  B01D53/00 ,  C07C7/09 ,  C07C7/11 ,  C10G70/04

    CPC分类号： C07C7/005 ,  B01D3/146 ,  B01D5/0036 ,  B01D5/0063 ,  B01D5/0075 ,  B01D5/009 ,  B01D53/002 ,  C07C7/09 ,  C07C7/11 ,  C10G70/043

    摘要： The invention relates to a process for separating a component mixture (K) comprising hydrogen, methane, hydrocarbons having two carbon atoms and hydrocarbons having three or more carbon atoms, wherein in a deethanization at least a portion of the component mixture (K) is subjected to a first partial condensation by cooling from a first temperature level to a second temperature level at a first pressure level to obtain a first gas fraction (G1) and a first liquid fraction (C1), at least a portion of the first gas fraction (G1) is subjected to a second partial condensation by cooling from the second temperature level to a third temperature level at the first pressure level to obtain a second gas fraction (G4) and a second liquid fraction (C2), and at least a portion of the first liquid fraction (C1) and at least a portion of the second liquid fraction (C2) are subjected to a rectification to obtain a third gas fraction (G3) and a third liquid fraction (C3+). The first liquid fraction (C1) or its part subjected to the rectification and the second liquid fraction (C2) or its part subjected to the rectification are expanded to a second pressure level and the rectification is carried out at the second pressure level, the first pressure level being 25 to 35 bar and the second pressure level being 14 to 17 bar. An overhead gas formed during the rectification is cooled to −25 to −35° C. and partially condensed, wherein a condensed portion of the overhead gas is used partially or completely as a reflux in the rectification and an uncondensed portion of the overhead gas is provided partially or completely as the third gas fraction (G3). The present invention likewise provides a corresponding plant (100, 200).

    PROCESSES AND SYSTEMS FOR FORMATION OF RECYCLE-CONTENT HYDROCARBON COMPOSITIONS
    30.
    发明申请
    PROCESSES AND SYSTEMS FOR FORMATION OF RECYCLE-CONTENT HYDROCARBON COMPOSITIONS 有权

    公开(公告)号：US20220380692A1

    公开(公告)日：2022-12-01

    申请号：US17755347

    申请日：2020-10-29

    申请人： Eastman Chemical Company

    发明人： Michael Gary Polasek ,  Daryl Bitting ,  David Eugene Slivensky ,  Xianchun Wu

    IPC分类号： C10G70/04 ,  C10G1/10

    摘要： Processes and systems for making recycle content hydrocarbons, including olefins, from recycled waste material. Recycle waste material may be pyrolyzed to form recycle content pyrolysis oil composition (r-pyoil), at least a portion of which may then be cracked to form a recycle content olefin composition (r-olefin). The r- olefin may then be further separated into product streams in a separation zone downstream of the cracker furnace. In some cases, presence of recycle content hydrocarbons may facilitate more efficient operation of one or more distillation columns in the separation zone, including the demethanizer.