COMBINED METHOD FOR PREPARING METHYL TERT-BUTYL ETHER AND ISOBUTYLENE FROM TERT-BUTYL ALCOHOL AND METHANOL

Title:

COMBINED METHOD FOR PREPARING METHYL TERT-BUTYL ETHER AND ISOBUTYLENE FROM TERT-BUTYL ALCOHOL AND METHANOL

Document Type and Number:

WIPO Patent Application WO/2019/206324

Kind Code:

A1

Abstract:

A combined method for preparing methyl tert-butyl ether and isobutylene from tert-butyl alcohol and methanol. The method is carried out in a device comprising a catalytic rectification tower. The catalytic rectification tower comprises a catalytic reaction section located at the middle part, tert-butyl alcohol enters the catalytic rectification tower from the catalytic reaction section, and methanol and water enter the catalytic rectification tower from the tower top. In the catalytic reaction section, a part of tert-butyl alcohol is dehydrated to generate isobutylene, and the other part of tert-butyl alcohol and the isobutylene are respectively further reacted with methanol fed from the tower top to generate methyl tert-butyl ether, wherein the tert-butyl alcohol is pretreated, and the molar feeding ratio of tert-butyl alcohol to methanol is 10:1 to 10:9. The combined process combines reaction and separation, promotes the rightward reaction, enables preparation of isobutylene by means of tert-butyl alcohol dehydration and synthesis of MTBE in "one-pot process", greatly simplifies the operation procedure, lowers the process cost and facilitates implementation, and improves the raw material conversion rate overall.

More Like This:

WO/2001/074485	PHOSPHOROUS-ALUMINIUM-MIXED OXIDE CATALYST, PROCESS FOR ITS PREPARATION AND USE THEREOF
WO/2006/041253	PROCESS FOR PREPARING DIMETHYL ETHER FROM CRUDE METHANOL IN AN ADIABATIC REACTOR
JP3865148	REACTOR SYNTHESIZING DIMETHYL ETHER

Inventors:

ZHU DEQUAN (CN)
DAI JUNMING (CN)
MA MIN (CN)
XIE SHUMIN (CN)

Application Number:

PCT/CN2019/084749

Publication Date:

October 31, 2019

Filing Date:

April 28, 2019

Export Citation:

Click for automatic bibliography generation Help

Assignee:

CENWAY TECH CO LTD (CN)

International Classes:

C07C41/09; C07C1/22; C07C43/04

Foreign References:

US20150203426A1	2015-07-23
CN106631713A	2017-05-10
CN101020622A	2007-08-22
EP0714878A1	1996-06-05
EP0600632B1	1998-08-19
CN104250205A	2014-12-31
CN104478644A	2015-04-01
CN108774100A	2018-11-09

Other References:

"Synthesis of MTBE over Zeolites from Methanol and Tert-butanol", CHEMICAL ENGINEERING OF OIL & GAS, vol. 39, no. 5, 31 December 2010 (2010-12-31), pages 388

Attorney, Agent or Firm:

BEIJING ORIGINTELLIGENCE IP LAW FIRM (CN)

Download PDF:

View/Download PDF PDF Help

Previous Patent: FILM COIL COATING SYSTEM FOR MANUFACTURING MULTIPLE FILMS ON FLEXIBLE SUBSTRATE

Next Patent: ASSET MANAGEMENT METHOD AND ASSET MANAGEMENT PLATFORM FOR MEDICAL DEVICE, AND COMPUTER-READABLE STOR...