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    Process and system for the production of isoprene
    82.
    发明申请
    Process and system for the production of isoprene 有权
    用于生产异戊二烯的方法和系统

    公开(公告)号：US20110034747A1

    公开(公告)日：2011-02-10

    申请号：US12462688

    申请日：2009-08-07

    Applicant: Robert J. Gartside ,  Shane R. Kleindienst

    Inventor： Robert J. Gartside ,  Shane R. Kleindienst

    IPC: C07C6/04 ,  B01J10/00

    CPC classification number: C07C11/18 ,  C07C4/04

    Abstract: Disclosed herein is a process for producing isoprene that includes reacting a mixed C4 metathesis feed stream comprising isobutylene and at least one of 1-butene and 2-pentene in a first metathesis reactor in the presence of a first metathesis catalyst under conditions sufficient to produce an intermediate product stream comprising at least 30 wt. % 2-methyl-2-pentene based upon the olefin content of fresh feed in the mixed C4 feed stream, and at least one of ethylene and propylene, separating the 2-methyl-2-pentene, subjecting the separated 2-methyl-2-pentene to pyrolysis to produce a reaction product stream comprising isoprene, and separating the isoprene into an isoprene product stream using fractionation. A system used in producing isoprene is also disclosed.

    Abstract translation: 本文公开了一种生产异戊二烯的方法，其包括使第一复分解反应器中含有异丁烯和1-丁烯和2-戊烯中的至少一种的混合C4复分解进料流在第一复分解催化剂存在下，在足以产生 中间产物流包含至少30重量％ 基于混合C4进料流中的新鲜进料的烯烃含量和乙烯和丙烯中的至少一种的2-甲基-2-戊烯，分离2-甲基-2-戊烯，使分离的2-甲基-2-戊烯 戊烯进行热解以产生包含异戊二烯的反应产物流，并使用分馏将异戊二烯分离成异戊二烯产物流。 还公开了用于生产异戊二烯的体系。

    Separation and Purification Apparatus and Separation and Purification Method of Unsaturated Hydrocarbons
    84.
    发明申请
    Separation and Purification Apparatus and Separation and Purification Method of Unsaturated Hydrocarbons 审中-公开
    分离纯化装置和不饱和烃的分离纯化方法

    公开(公告)号：US20070256920A1

    公开(公告)日：2007-11-08

    申请号：US11661389

    申请日：2005-08-29

    Applicant: Masanobu Kanauchi ,  Yasuhiko Arimori

    Inventor： Masanobu Kanauchi ,  Yasuhiko Arimori

    IPC: C07C7/08 ,  C07C11/167

    CPC classification number: C07C7/08 ,  B01D3/40 ,  B01D3/4255 ,  C07C11/18 ,  C07C11/167 ,  C07C11/00

    Abstract: For example, a separation and purification apparatus having an extractive distillation tower 4 for separating and purifying butadiene, impurity concentration sensors 32, 34 for detecting the concentrations of specific impurities other than butadiene, a target material concentration sensor for detecting the concentration of butadiene in the extractive distillation tower, and a differential pressure sensor 30 for detecting the differential pressure between the top and bottom of the extractive distillation tower 4 and a separation and purification method. The method calculates a concentration of a specific impurity after a predetermined time, a concentration of butadiene at the top, and a forecasted value of the differential pressure between the top and bottom based on the sensors and controls operations based on the forecasted values by a concentration predictive control means 60. It controls a feedstock flow rate control valve 21a controlling the rate of feedstock fed to the extractive distillation tower 4, a load detecting means 61 for detecting the load of the extractive distillation tower, and a feedstock flow rate control valve 21a by a load control means 62 in accordance with detection values detected by the load detecting means 61.

    Abstract translation: 例如，具有用于分离和纯化丁二烯的萃取蒸馏塔4，用于检测丁二烯以外的特定杂质的浓度的杂质浓度传感器32,34的分离和净化装置，用于检测丁二烯浓度的目标物质浓度传感器 萃取蒸馏塔和用于检测萃取蒸馏塔4的顶部和底部之间的压差的差压传感器30和分离和纯化方法。 该方法基于传感器计算出预定时间后的特定杂质的浓度，顶部的丁二烯浓度和顶部和底部之间的差压的预测值，并基于浓度的预测值来控制操作 预测控制装置60。 它控制原料流量控制阀21a，其控制进料到萃取蒸馏塔4的进料速率，负载检测装置61，用于检测萃取蒸馏塔的负荷;以及原料流量控制阀21a通过负载 控制装置62根据由负载检测装置61检测到的检测值。

    Process of obtaining an isoprene-enriched FCC C5 fraction and selective polymerization of isoprene from said fraction
    85.
    发明申请
    Process of obtaining an isoprene-enriched FCC C5 fraction and selective polymerization of isoprene from said fraction 有权
    获得富含异戊二烯的FCC C5馏分和从所述级分选择性聚合异戊二烯的方法

    公开(公告)号：US20060020095A1

    公开(公告)日：2006-01-26

    申请号：US11185680

    申请日：2005-07-21

    Applicant: Sylvie Gandon-Pain

    Inventor： Sylvie Gandon-Pain

    IPC: C08F136/00

    CPC classification number: C10G69/126 ,  C07C11/18 ,  C08F136/08 ,  C10G49/02 ,  C10G50/00 ,  C10G2300/1088 ,  C10G2300/302 ,  C10G2400/22 ,  C08F4/545

    Abstract: A process is described for obtaining, from an “FCC” initial C5 fraction, a final C5 fraction which is enriched with isoprene and purified and usable for the selective polymerization of isoprene. A process is also described for obtaining an isoprene homopolymer from a polymerization medium comprising isoprene and at least one methyl butene, such as said “FCC” C5 fraction which is enriched with isoprene and purified. The process of obtaining the final fraction from the initial C5 fraction includes: a catalytic hydrogenation reaction of said initial C5 fraction by a palladium-based catalyst, which produces an intermediate C5 fraction comprising n-pentenes in a mass ratio which is less than 0,1% and methyl butanes; a dehydrogenation reaction applied to the intermediate C5 fraction, which includes methyl butanes to produce the final fraction, and purification of the final fraction to obtain a purified fraction which is practically devoid of disubstituted alkynes, true alkynes and cyclopentadiene, and the mass fraction of the methyl butenes in the intermediate fraction is

    Abstract translation: 描述了从“FCC”初始C5级分获得富含异戊二烯并纯化并可用于异戊二烯的选择性聚合的最终C5级分的方法。 还描述了从包含异戊二烯和至少一种甲基丁烯的聚合介质获得异戊二烯均聚物的方法，例如富含异戊二烯并纯化的所述“FCC”C5级分。 从初始C5馏分获得最终级分的方法包括：通过钯基催化剂对所述初始C5馏分进行催化氢化反应，其产生质量比小于0的包含正戊烯的中间体C5馏分， 1％和甲基丁烷; 应用于中间体C5馏分的脱氢反应，其包括甲基丁烷以产生最终级分，并纯化最终级分以获得实际上不含二取代炔，真炔烃和环戊二烯的纯化级分，以及质量分数 中间馏分中的甲基丁烯<30％。 获得异戊二烯均聚物的方法包括在异戊二烯和至少一种甲基丁烯存在下使基于共轭二烯的催化体系，悬浮液中的有机磷酸的稀土盐，烷化剂， 和卤素供体。

    C-nitrosoaniline compounds and their blends as polymerization inhibitors
    88.
    发明授权
    C-nitrosoaniline compounds and their blends as polymerization inhibitors 失效
    C-亚硝基苯胺化合物及其共混物作为聚合抑制剂

    公开(公告)号：US06685823B2

    公开(公告)日：2004-02-03

    申请号：US10030991

    申请日：2002-01-16

    Applicant: Brigitte Benage ,  Gerald J. Abruscato ,  Andrew J. Eisenstein

    Inventor： Brigitte Benage ,  Gerald J. Abruscato ,  Andrew J. Eisenstein

    IPC: C07C720

    CPC classification number: B01D3/34 ,  C07C7/04 ,  C07C7/20 ,  C07C51/50 ,  C07C67/62 ,  C07C253/32 ,  Y10S585/95 ,  C07C15/46 ,  C07C15/42 ,  C07C11/167 ,  C07C11/18 ,  C07C255/06 ,  C07C69/54 ,  C07C57/04

    Abstract: Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of at least one inhibitor selected from the group consisting of C-nitrosoaniline and quinone imine oxime compounds. Also disclosed is a composition of matter comprising: A) an ethylenically unsaturated monomer and B) an effective inhibiting amount, sufficient to prevent premature polymerization during distillation or purification of said ethylenically unsaturated monomer, of at least one inhibitor selected from the group consisting of C-nitrosoaniline and quinone imine oxime compounds used together with an effective amount of oxygen or air to enhance the inhibiting activity of said inhibitor.

    Abstract translation: 本文公开了一种抑制烯键式不饱和单体的过早聚合的方法，包括向所述单体中加入有效量的至少一种选自C-亚硝基苯胺和醌亚胺肟化合物的抑制剂。 还公开了一种物质组合物，其包含：A）烯属不饱和单体和B）有效抑制量，足以防止在所述烯属不饱和单体的蒸馏或纯化过程中过早聚合至少一种选自C- 亚硝基苯胺和醌亚胺肟化合物与有效量的氧气或空气一起使用以增强所述抑制剂的抑制活性。

    Process for separating C5 cuts obtained from a petroleum cracking process
    89.
    发明申请
    Process for separating C5 cuts obtained from a petroleum cracking process 有权
    用于分离从石油裂解过程获得的C5馏分的方法

    公开(公告)号：US20030100809A1

    公开(公告)日：2003-05-29

    申请号：US10255628

    申请日：2002-09-27

    Inventor： Baoliang Tian ,  Puyang Li ,  Chunpeng Du ,  Hongfen Xu ,  Haiqiang Feng ,  Jingmin Hu ,  Jidong Gao ,  Ming Ma

    IPC: C07C013/00 ,  C07C403/00

    CPC classification number: C07C7/005 ,  C07C2/44 ,  C07C7/04 ,  C07C7/08 ,  C07C7/163 ,  C07C2601/10 ,  C07C2603/68 ,  C10G45/32 ,  C10G45/40 ,  C10G69/126 ,  C07C13/61 ,  C07C11/18 ,  C07C13/15

    Abstract: The present invention relates to a process for separating the isoprene, 1,3-pentadiene and dicyclopentadiene from a C5 cuts, comprising dimerization of the cyclopentadiene and selective catalytic hydrogenation. The second extractive rectification step can be omitted, because the alkynes are removed through selective catalytic hydrogenation prior to the extractive rectification. As a result, the solvent-recovering units can be simplified, and thus the process as a whole can be optimized. Correspondingly, the investment and energy consumption, the operation cost, and finally the production cost can be substantially reduced.

    Abstract translation: 本发明涉及从C5切割分离异戊二烯，1,3-戊二烯和二环戊二烯的方法，其包括环戊二烯的二聚和选择性催化氢化。 由于在萃取精馏之前通过选择性催化氢化除去炔烃，所以可以省略第二萃取精馏步骤。 结果，可以简化溶剂回收单元，从而可以优化整个过程。 相应地，投资和能源消耗，运营成本以及最终的生产成本可以大大降低。

    Vinyl monomer polymerization inhibition using hindered hydroxylamines
    90.
    发明授权
    Vinyl monomer polymerization inhibition using hindered hydroxylamines 有权
    使用受阻羟胺的乙烯基单体聚合抑制

    公开(公告)号：US06342647B1

    公开(公告)日：2002-01-29

    申请号：US09391970

    申请日：1999-09-08

    Applicant: Glenn L. Roof ,  Muslim D. Shahid

    Inventor： Glenn L. Roof ,  Muslim D. Shahid

    IPC: C07C720

    CPC classification number: C09K15/30 ,  C07B63/04 ,  C07C7/20 ,  C07C51/50 ,  C07C253/32 ,  C07C15/46 ,  C07C11/167 ,  C07C57/04 ,  C07C11/18 ,  C07C255/08

    Abstract: It has been discovered that the polymerization of vinyl aromatic compounds, such as styrene, may be inhibited by the addition of a composition that contains a hindered hydroxylamine, and, optionally, a synergist together with the hindered hydroxylamine. In one embodiment of the invention, the hindered N,N-disubstituted hydroxylamine has the formula: [(R1R2R3)C]2N—OH where R1, R2, and R3 are independently selected from the group consisting of hydrogen, straight, branched or cyclic alkyl, aryl, aralkyl, and alkaryl moieties; where no more than two of R1, R2, and R3 on each C can be hydrogen at a time; where one or more of R1, R2, and R3 on one C may be joined to a R1, R2, and R3 on the other C to form a cyclic moiety selected from the group consisting of alkylene, and aralkylene moieties; where any two of the R1, R2, and R3 on any one C may be joined together to form a cycloalkyl; where any of the above definitions of R1, R2, and R3 may contain one or more heteroatoms selected from the group consisting of N, O and S; and where the total number of carbon atoms in the hindered N,N-disubstituted hydroxylamine ranges from 6 to 70. Optional synergists may include alkyl-substituted hydroxyarenes such as 2,5-di-tert-butylhydroquinone, and hydrogen transfer agents such as 1,2,3,4-tetrahydronaphthalene; and the like, and mixtures thereof.

    Abstract translation: 已经发现，乙烯基芳族化合物如苯乙烯的聚合可以通过加入含有受阻羟胺的组合物和任选的增效剂与受阻羟胺一起被抑制。 在本发明的一个实施方案中，受阻的N，N-二取代的羟胺具有下式：其中R 1，R 2和R 3独立地选自氢，直链，支链或环烷基，芳基，芳烷基和烷芳基部分 ; 其中每个C上不超过两个R 1，R 2和R 3可以一次为氢; 其中一个C上的R 1，R 2和R 3中的一个或多个可以在另一个C上连接到R 1，R 2和R 3，以形成选自亚烷基和亚芳基部分的环状部分; 其中任何一个C上的R 1，R 2和R 3中的任何两个可以连接在一起以形成环烷基; 其中R1，R2和R3的上述定义中的任何一个可以含有一个或多个选自N，O和S的杂原子; 并且其中受阻N，N-二取代羟胺中的总碳原子数范围为6至70.任选的增效剂可包括烷基取代的羟基芳烃如2,5-二叔丁基氢醌和氢转移剂如1 ，2,3,4-四氢化萘; 等，及其混合物。

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