中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

49 records (took 0.025 seconds)

    AMMOXIDATION OF A MIXTURE OF KETONES TO ACETONITRILE AND HYDROGEN CYANIDE
    1.
    发明申请
    AMMOXIDATION OF A MIXTURE OF KETONES TO ACETONITRILE AND HYDROGEN CYANIDE 审中-公开
    乙二胺四乙酸和氰化物的混合物的氧化

    公开(公告)号：WO0073261A9

    公开(公告)日：2002-06-27

    申请号：PCT/US0013374

    申请日：2000-05-16

    Applicant: STANDARD OIL CO

    Inventor： SEELEY MICHAEL J ,  GODBOLE SANJAY P ,  SURESH DEV D

    IPC: C01C3/02 ,  C07B61/00 ,  C07C253/24 ,  C07C253/26 ,  C07C255/03 ,  C07C255/08

    CPC classification number: C07C253/26 ,  C01C3/0212 ,  C01C3/0225 ,  C07C253/24 ,  Y02P20/52 ,  C07C255/08

    Abstract: A process increasing the yield of both HCN and acetonitrile produced during the manufacture of acrylonitrile comprising introducing a hydrocarbon selected from the group consisting of propylene and propane, a crude ketone and/or a mixture of at least two ketones, ammonia and air, into a reaction zone containing an ammoxidation catalyst, reacting the hydrocarbon, the ketone, ammonia and oxygen over said catalyst at an elevated temperature to produce acrylonitrile, hydrogen cyanide and acetonitrile, and recovering the acrylonitrile, hydrogen cyanide and acetonitrile from the reactor.

    Abstract translation: 包括将选自丙烯和丙烷，粗酮和/或至少两种酮，氨和空气的混合物的烃引入到丙烯和丙烯的制备过程中产生的HCN和乙腈的产率的方法， 含有氨氧化催化剂的反应区，在升高的温度下使所述催化剂上的烃，酮，氨和氧反应生成丙烯腈，氰化氢和乙腈，并从反应器回收丙烯腈，氰化氢和乙腈。

    PROCESS FOR THE PURIFICATION AND RECOVERY OF ACETONITRILE
    2.
    发明申请
    PROCESS FOR THE PURIFICATION AND RECOVERY OF ACETONITRILE 审中-公开
    ACETONITRILE的净化和回收方法

    公开(公告)号：WO0206212A3

    公开(公告)日：2002-05-23

    申请号：PCT/US0119709

    申请日：2001-06-21

    Applicant: STANDARD OIL CO

    Inventor： GODBOLE SANJAY P

    IPC: C07C253/24 ,  C07C253/26 ,  C07C253/34 ,  C07C255/03

    CPC classification number: C07C253/26 ,  C07C253/24 ,  C07C253/34 ,  Y10S203/20 ,  C07C255/03

    Abstract: A method for the purification of crude acetonitrile comprising distilling the crude acetonitrile in a first fractional distillation column at below atmospheric pressure, withdrawing a first side draw fraction comprising acetonitrile, distilling the first side draw fraction in a second fractional distillation column at super atmospheric pressure, and withdrawing from the second distillation a second side draw fraction comprising purified acetonitrile.

    Abstract translation: 一种用于纯化粗乙腈的方法，包括在低于大气压的第一分馏塔中蒸馏粗乙腈，取出包含乙腈的第一侧馏分，在第二分馏塔中在超大气压下蒸馏第一侧馏分， 并从第二次蒸馏中取出包含纯化乙腈的第二侧馏分。

    MINIMIZATION OF WASTE MATERIAL AND PRODUCT RECOVERING PROCESS
    3.
    发明专利
    MINIMIZATION OF WASTE MATERIAL AND PRODUCT RECOVERING PROCESS 失效

    公开(公告)号：JPH11199559A

    公开(公告)日：1999-07-27

    申请号：JP26552498

    申请日：1998-09-18

    Applicant: STANDARD OIL CO OHIO

    Inventor： SOCKELL EDWARD J ,  SARNA JOSEPH C ,  KERR ALI ,  GODBOLE SANJAY P

    IPC: C07C253/24 ,  C07C253/26 ,  C07C253/34 ,  C07C255/08

    Abstract: PROBLEM TO BE SOLVED: To improve HCN recovery rate in the production of acrylonitrile. SOLUTION: This production process of (meth)acrylonitrile comprises the step of transferring a discharged material obtained in the ammoxidation of propylene, etc., to a quenching column, and cooling the hot exhaust gas with a water fume, the step of passing the cooled reaction discharged material to an absorption column from an overhead to absorb a crude acrylonitrile or methacrylonitrile with water, and the step of passing the obtained vapor flow containing HCN through a product cooling device and then a knockout pot, and also comprises bringing the cooled HCN product in contact with a water flow as an improved point.

    REDUCTION OF OXIDANT BY OPERATION AND/OR TREATMENT OF AQUEOUS ACRYLONITRILE PROCESS STREAM
    4.
    发明专利
    REDUCTION OF OXIDANT BY OPERATION AND/OR TREATMENT OF AQUEOUS ACRYLONITRILE PROCESS STREAM 失效

    公开(公告)号：JPH11322696A

    公开(公告)日：1999-11-24

    申请号：JP33815698

    申请日：1998-11-27

    Applicant: STANDARD OIL CO OHIO

    Inventor： GRAHAM ANNE M ,  GODBOLE SANJAY P ,  LEE DANIEL G

    IPC: C07C5/08 ,  C07C253/26 ,  C07C253/34 ,  C07C255/08

    Abstract: PROBLEM TO BE SOLVED: To obtain a specific unsaturated mononitrile useful as a monomer for a polymerizing reaction without contamination with an impurity by reacting a specific olefin, ammonia, etc., in the presence of a catalyst, reducing the pH of an aqueous stream used till the recovery and purification before recycling and then reducing the amount of the trace impurity. SOLUTION: An olefin selected from propylene and isobutylene is reacted with ammonia and oxygen in the presence of a catalyst in a reactor zone. A reactor effluent containing the produced unsaturated mononitrile from the reactor is then brought into contact with at least a first aqueous stream in a quenching column and cooled. The cooled reactor effluent is subsequently brought into contact with at least a second aqueous stream in an absorption column to separate and remove a bottom stream containing the unsaturated mononitrile. The resultant bottom stream is then moved to a recovery and purification section and the pH of at least one aqueous process stream is reduced before recycling to thereby reduce the amount of a trace impurity. The resultant bottom stream is further recycled to afford the objective compound selected from acrylonitrile and methacrylonitrile.

    IMPROVED RECOVERY PROCESS FOR ACRYLONITRILE
    5.
    发明专利
    IMPROVED RECOVERY PROCESS FOR ACRYLONITRILE 失效

    公开(公告)号：JPH107639A

    公开(公告)日：1998-01-13

    申请号：JP1299397

    申请日：1997-01-27

    Applicant: STANDARD OIL CO OHIO

    Inventor： GIBSON JAMES S ,  RINKER JEFFREY E ,  WACHTENDORF PAUL T ,  GODBOLE SANJAY P

    IPC: C07B63/00 ,  C07C5/08 ,  C07C253/26 ,  C07C253/32 ,  C07C253/34 ,  C07C255/03 ,  C07C255/08

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject high-quality compound in a short time by cooling an effluent gas of an ammoxidation reactor by a quenching column, absorbing a product in water by an absorbing column, separating the absorbed substance into a water and an organic layers and collecting the product from the organic layer. SOLUTION: A reactor effluent obtained by the ammoxidation of propylene or isobutylene is transferred to a quenching column and a hot effluent gas is cooled by bringing it into contact with mist. The cooled reactor effluent overhead is passed through a conduit 1 to the bottom of an absorbing column 5 to absorb crude acrylonitrile or methacrylonitrile in water introduced through a conduit 3. Then the solution is sent through a first distillation column 13 to a first decanter 19 to form a first water layer and a first organic layer containing acrylonitrile or methacrylonitrile. The first organic layer is transferred a second distillation column 27 to a second decanter 33 to form a second water layer and a second organic layer to recover the objective compound from the second organic layer.

Patent Agency Ranking