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1. WO2020197888 - PROCESSES AND SYSTEMS FOR CONVERTING BENZENE AND/OR TOLUENE VIA METHYLATION

Publication Number WO/2020/197888
Publication Date 01.10.2020
International Application No. PCT/US2020/023383
International Filing Date 18.03.2020
IPC
C07C 2/86 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
2Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
86by condensation between a hydrocarbon and a non-hydrocarbon
C07C 15/08 2006.01
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
15Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic part
02Monocyclic hydrocarbons
067C8H10 hydrocarbons
08Xylenes
B01J 29/70 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
29Catalysts comprising molecular sieves
04having base-exchange properties, e.g. crystalline zeolites, pillared clays
06Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
70of types characterised by their specific structure not provided for in groups B01J29/08-B01J29/65130
CPC
B01J 29/7038
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
29Catalysts comprising molecular sieves
04having base-exchange properties, e.g. crystalline zeolites
06Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
70of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
7038MWW-type, e.g. MCM-22, ERB-1, ITQ-1, PSH-3 or SSZ-25
C07C 2/864
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
2Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
86by condensation between a hydrocarbon and a non-hydrocarbon
862the non-hydrocarbon contains only oxygen as hetero-atoms
864the non-hydrocarbon is an alcohol
C07C 2/865
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
2Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
86by condensation between a hydrocarbon and a non-hydrocarbon
862the non-hydrocarbon contains only oxygen as hetero-atoms
865the non-hydrocarbon is an ether
C07C 2529/70
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
2529Catalysts comprising molecular sieves
04having base-exchange properties, e.g. crystalline zeolites, pillared clays
06Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
70of types characterised by their specific structure not provided for in groups C07C2529/08 - C07C2529/65
Applicants
  • EXXONMOBIL CHEMICAL PATENTS INC. [US]/[US]
Inventors
  • WASHBURN, Seth, M.
  • CHIANG, Hsu
  • DORSI, Catherine, M.
  • CHEN, Tan-jen
Agents
  • CHEN, Siwen
  • FOSTER, Shawn, H.
  • BELL, Catherine, L.
  • FAULKNER, Kevin, M.
  • BAEHL, Stephen, A.
Priority Data
19185662.411.07.2019EP
62/825,25828.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESSES AND SYSTEMS FOR CONVERTING BENZENE AND/OR TOLUENE VIA METHYLATION
(FR) PROCÉDÉS ET SYSTÈMES DE CONVERSION DE BENZÈNE ET/OU DE TOLUÈNE PAR MÉTHYLATION
Abstract
(EN)
This disclosure provides an improved process for converting benzene/toluene via methylation with methanol/dimethyl ether for producing, e.g., p-xylene, comprising separating and recycling dimethyl ether from the methylation reaction product mixture effluent to the methylation reactor. High selectivity toward p-xylene, among others, can be achieved.
(FR)
La présente invention concerne un procédé amélioré de conversion de benzène/toluène par méthylation avec du méthanol/éther diméthylique pour produire, par exemple, du p-xylène, comprenant la séparation et le recyclage de l'éther diméthylique de l'effluent de mélange de produit de réaction de méthylation au réacteur de méthylation. Une sélectivité élevée vis-à-vis du p-xylène, entre autres, peut être obtenue.
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