Processing

Please wait...

Settings

Settings

Goto Application

1. WO1997023438 - PROCESS FOR PREPARING ALKYL ETHERS AND MIXTURES THEREOF

Publication Number WO/1997/023438
Publication Date 03.07.1997
International Application No. PCT/FI1996/000678
International Filing Date 19.12.1996
Chapter 2 Demand Filed 21.03.1997
IPC
B01D 3/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
3Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
C07C 41/06 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
41Preparation of ethers; Preparation of compounds having groups, groups or groups
01Preparation of ethers
05by addition of compounds to unsaturated compounds
06by addition of organic compounds only
C07C 41/42 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
41Preparation of ethers; Preparation of compounds having groups, groups or groups
01Preparation of ethers
34Separation; Purification; Stabilisation; Use of additives
40by change of physical state, e.g. by crystallisation
42by distillation
C10L 1/02 2006.01
CCHEMISTRY; METALLURGY
10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
LFUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR  C10K111; LIQUEFIED PETROLEUM GAS;  USE OF ADDITIVES TO FUELS OR FIRES;  FIRE-LIGHTERS
1Liquid carbonaceous fuels
02essentially based on components consisting of carbon, hydrogen, and oxygen only
CPC
B01D 3/009
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
3Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
009in combination with chemical reactions
C07C 41/06
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
41Preparation of ethers; Preparation of compounds having groups, groups or groups
01Preparation of ethers
05by addition of compounds to unsaturated compounds
06by addition of organic compounds only
C07C 41/42
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
41Preparation of ethers; Preparation of compounds having groups, groups or groups
01Preparation of ethers
34Separation; Purification; Stabilisation; Use of additives
40by change of physical state, e.g. by crystallisation
42by distillation
C10L 1/023
CCHEMISTRY; METALLURGY
10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
LFUELS NOT OTHERWISE PROVIDED FOR
1Liquid carbonaceous fuels
02essentially based on components consisting of carbon, hydrogen, and oxygen only
023for spark ignition
Y02P 20/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
20Technologies relating to chemical industry
10Process efficiency
Applicants
  • NESTE OY [FI]/[FI] (AllExceptUS)
  • TAMMINEN, Esa [FI]/[FI] (UsOnly)
  • LINDQVIST, Petri [FI]/[FI] (UsOnly)
Inventors
  • TAMMINEN, Esa
  • LINDQVIST, Petri
Agents
  • LAINE, Seppo
Priority Data
95625622.12.1995FI
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS FOR PREPARING ALKYL ETHERS AND MIXTURES THEREOF
(FR) PROCEDE DE PREPARATION D'ETHERS D'ALKYLE ET DE LEURS MELANGES
Abstract
(EN)
The invention relates to a process for preparing tertiary alkyl ethers, in particular MTBE, ETBE or mixtures of these ethers with heavier ethers. According to the process the feedstock containing hydrocarbons is fed to a catalytic distillation reactor system, in which the isoolefines, in particular the C4 to C7 isoolefines, of the feed are reacted with an alkanol in the presence of a cation exchange resin in order to produce tertiary alkyl ether products. The reaction product containing the ethers is removed from the distillation system as the bottoms product and, if necessary, it is subjected to an additional treatment for producing a gasoline component. The unreacted alkanol is removed as the overhead product of the distillation. According to the invention, the distillate withdrawn mainly contains an azeotrope of C3 hydrocarbons and alkanol, the C3 amount of which at least approximately corresponds to the C3 hydrocarbon concentration of the hydrocarbon feed, a substantial amount of the unreacted alkanol being removed in the form of said azeotrope. By means of the invention the need for a separate alkanol washing unit is eliminated in the apparatus which considerably reduces apparatus investment costs.
(FR)
Ce procédé permet de préparer des éthers d'alkyles tertiaires, en particulier méthyle t-butyle éther (MTBE) et éthyle t-butyle éther (ETBE) ou des mélanges de ces éthers avec d'autres plus lourds. On introduit la charge de départ contenant des hydrocarbures dans un réacteur de distillation catalytique où des isooléfines, les isooléfines C4-7 en particulier, contenues dans cette charge sont mises en réaction avec un alcanol, en présence d'une résine d'échange cationique, pour donner des produits qui sont des éthers d'alkyle tertiaires. Le produit de réaction contenant les éthers est retiré du système de distillation sous forme d'un résidu et soumis, si nécessaire, à un traitement complémentaire pour la production d'un composant d'essence. On retire l'alcanol n'ayant pas réagi comme produit de tête de distillation. Le distillat retiré contient essentiellement un azéotrope d'alcanol et d'hydrocarbures C3 dont la quantité de C3 correspond au moins approximativement à la concentration d'hydrocarbures C3 dans la charge de départ d'hydrocarbures, une partie substantielle de l'alcanol n'ayant pas réagi étant retirée sous la forme dudit azéotrope. Ainsi, on évite le recours à une unité de lavage séparée pour l'alcanol dans une telle installation, ce qui réduit considérablement les coûts d'investissements concernant cette installation.
Latest bibliographic data on file with the International Bureau