公开(公告)号：RO120405B1

公开(公告)日：2006-01-30

申请号：RO9801625

申请日：1998-11-26

Applicant: STANDARD OIL CO

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

IPC: C07C253/24 ,  C07C5/08 ,  C07C253/26 ,  C07C253/34 ,  C07C255/08

Abstract: The invention relates to a process for preparing unsaturated mononitriles selected from a group consisting of acrylonitrile and methacrylonitrile and comprising: a) the reaction of an olefin selected from a group consisting of propylene and isobutylene with ammonia and oxygen, in a reaction zone, in the presence of a catalyst, to produce an effluent of the reactor containing the corresponding unsaturated mononitrile; b) the transfer of the reactor effluent containing the corresponding unsaturated mononitrile to a blast cooling column where the reactor effluent containing the corresponding unsaturated mononitrile is cooled by contact with a first aqueous flow; c) the transfer of the cooled effluent from the reactor containing the unsaturated mononitrile to an absorption column where the cooled effluent from the reactor containing the unsaturated mononitrile is contacted to at least a second aqueous flow in order to separate and remove the unsaturated mononitrile as a flow from the bottom of the absorption column; d) the transfer of the flow from the bottom of the absorption column to a recovery column where the overhead product is removed and separated in a raw unsaturated mononitrile phase and an aqueous phase with a low content of unsaturated mononitrile, containing traces of oxidizing impurities and also the lowering of the aqueous phase pH value with a view to reducing the level of oxidative impurities and the recycling of the above mentioned aqueous phase.

公开(公告)号：AT287872T

公开(公告)日：2005-02-15

申请号：AT98309539

申请日：1998-11-23

Applicant: STANDARD OIL CO

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

IPC: C07C5/08 ,  C07C253/26 ,  C07C253/34 ,  C07C255/08 ,  C07C253/32

Abstract: A process for manufacturing an unsaturated mononitrile selected from the group consisting of acrylonitrile and methacrylonitrile comprising reacting an olefin selected from the group consisting of propylene and isobutylene, ammonia and oxygen in a reactor zone in the presence of a catalyst to produce a reactor effluent containing the corresponding unsaturated mononitrile, transferring the reactor effluent containing the unsaturated mononitrile to a quench column wherein the reactor effluent containing the unsaturated mononitrile is contacted with at least a first aqueous stream to cool the reactor effluent, transferring the cooled reactor effluent containing the unsaturated mononitrile to an absorption column wherein the reactor effluent containing unsaturated mononitrile is contacted with at least a second aqueous stream to separate and remove the unsaturated mononitrile as a bottom stream from the absorption column, transferring the bottom stream containing the unsaturated mononitrile to a recovery and purification section where the unsaturated mononitrile is recovered and purified, and recycling at least one aqueous process stream to improve the efficiency of the process wherein the improvement comprises treating at least one aqueous stream before recycling into the process stream to reduce the pH thereby reducing the amount of trace impurities present in the aqueous recycle stream.

公开(公告)号：CA2516408A1

公开(公告)日：2004-07-29

申请号：CA2516408

申请日：2004-01-05

Applicant: STANDARD OIL CO

Inventor： HAGANS MICHAEL K ,  GODBOLE SANJAY P ,  BRUCE MARK R ,  CESA MARK C ,  MOORE ERIC J ,  BENDER DAVID R

IPC: C07D263/32

Abstract: A process for the recovery of oxazole comprising contacting a mixture comprising oxazole and acetonitrile with an acid to form an acid salt of oxazole; separating acid salt of the oxazole from the mixture; and neutralizing the acid salt of oxazole separated from the mixture to release oxazole.

公开(公告)号：BR0010997A

公开(公告)日：2002-02-19

申请号：BR0010997

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

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.

公开(公告)号：CA2415395A1

公开(公告)日：2002-01-24

申请号：CA2415395

申请日：2001-06-21

Applicant: STANDARD OIL CO

Inventor： GODBOLE SANJAY P

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

Abstract: A method for the purification of crude acetonitrile comprising distilling th e 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.

公开(公告)号：TR199802494A2

公开(公告)日：1999-12-21

申请号：TR9802494

申请日：1998-11-30

Applicant: STANDARD OIL CO

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

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

Abstract: A process for manufacturing an unsaturated mononitrile selected from the group consisting of acrylonitrile and methacrylonitrile comprising reacting an olefin selected from the group consisting of propylene and isobutylene, ammonia and oxygen in a reactor zone in the presence of a catalyst to produce a reactor effluent containing the corresponding unsaturated mononitrile, transferring the reactor effluent containing the unsaturated mononitrile to a quench column wherein the reactor effluent containing the unsaturated mononitrile is contacted with at least a first aqueous stream to cool the reactor effluent, transferring the cooled reactor effluent containing the unsaturated mononitrile to an absorption column wherein the reactor effluent containing unsaturated mononitrile is contacted with at least a second aqueous stream to separate and remove the unsaturated mononitrile as a bottom stream from the absorption column, transferring the bottom stream containing the unsaturated mononitrile to a recovery and purification section where the unsaturated mononitrile is recovered and purified, and recycling at least one aqueous process stream to improve the efficiency of the process wherein the improvement comprises treating at least one aqueous stream before recycling into the process stream to reduce the pH thereby reducing the amount of trace impurities present in the aqueous recycle stream.

公开(公告)号：BR9805434A

公开(公告)日：1999-12-14

申请号：BR9805434

申请日：1998-11-26

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: A process for manufacturing an unsaturated mononitrile selected from the group consisting of acrylonitrile and methacrylonitrile comprising reacting an olefin selected from the group consisting of propylene and isobutylene, ammonia and oxygen in a reactor zone in the presence of a catalyst to produce a reactor effluent containing the corresponding unsaturated mononitrile, transferring the reactor effluent containing the unsaturated mononitrile to a quench column wherein the reactor effluent containing the unsaturated mononitrile is contacted with at least a first aqueous stream to cool the reactor effluent, transferring the cooled reactor effluent containing the unsaturated mononitrile to an absorption column wherein the reactor effluent containing unsaturated mononitrile is contacted with at least a second aqueous stream to separate and remove the unsaturated mononitrile as a bottom stream from the absorption column, transferring the bottom stream containing the unsaturated mononitrile to a recovery and purification section where the unsaturated mononitrile is recovered and purified, and recycling at least one aqueous process stream to improve the efficiency of the process wherein the improvement comprises treating at least one aqueous stream before recycling into the process stream to reduce the pH thereby reducing the amount of trace impurities present in the aqueous recycle stream.

公开(公告)号：BG101172A

公开(公告)日：1998-01-30

申请号：BG10117297

申请日：1997-01-27

Applicant: STANDARD OIL CO

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

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

Abstract: The method of acrylonitrile or methacrylonitrile recyclingproduced from the reactor flow of the reaction of aminooxidationsof propylene or isobutylene consists in the admission in thereactor flow through absorption column of a first decanter,recycling column, second decanter and stripping column. The innertenperature of the first and second decanters is maintainedbetween 0°C and 23.9°C.

公开(公告)号：ZA200507199B

公开(公告)日：2006-06-28

申请号：ZA200507199

申请日：2005-09-07

Applicant: STANDARD OIL CO

Inventor： GODBOLE SANJAY P ,  CESA MARK C

IPC: C07C20060101

公开(公告)号：CA2552334A1

公开(公告)日：2005-08-04

申请号：CA2552334

申请日：2005-01-06

Applicant: STANDARD OIL CO

Inventor： KANTAK MILIND V ,  WAHNSCHAFFT OLIVER M ,  GODBOLE SANJAY P

IPC: C07C253/34 ,  C07C255/08

Abstract: A process for the recovery and purification of olefinically unsaturated nitriles from a process stream produced by the ammoxidation of a hydrocarbon feedstock comprising contacting the process stream comprising olefinically unsaturated nitrile with an aqueous quench liquid in a quench apparatus to produce a gaseous quench effluent comprising olefinically unsaturated nitril e; contacting the gaseous quench effluent with a liquid comprising water in an absorber apparatus to form an aqueous mixture comprising absorbed olefinical ly unsaturated nitrile; withdrawing from the absorber apparatus a side-draw stream comprising water and a bottoms stream comprising olefinically unsaturated nitrile; introducing the bottoms stream to a first distillation column where the bottoms stream is distilled in an extractive distillation t o form a top fraction comprising olefinically unsaturated nitrile, and directi ng the sidedraw stream comprising water to the upper portion of the first distillation column to assist with the extractive distillation of the olefinically unsaturated nitrile in the first distillation column.