Improvement in alkene selectivity in the conversion of dimethyl ether into hydrocarbons by control of absorption by heteropoly compounds

1984 ◽  
pp. 697 ◽  
Author(s):  
Toshio Okuhara ◽  
Takuo Hibi ◽  
Kazuteru Takahashi ◽  
Shin Tatematsu ◽  
Makoto Misono
Keyword(s):  
Dimethyl Ether ◽  
Heteropoly Compounds

Catalysis by heteropoly compounds x. Synthesis of lower olefins by conversion of dimethyl ether over 12-tungstophosphates

1986 ◽  
Vol 24 (1-2) ◽  
pp. 69-83 ◽  
Author(s):  
Takuo Hibi ◽  
Kazuteru Takahashi ◽  
Toshio Okuhara ◽  
Makoto Misono ◽  
Yukio Yoneda
Keyword(s):  
Dimethyl Ether ◽  
Heteropoly Compounds ◽  
Lower Olefins

Efficient Production of Light Olefin Based on Methanol Dehydration: Simulation and Design Improvement

2020 ◽  
Vol 23 ◽  
Author(s):  
S. Majid Abdoli ◽  
Mahsa Kianinia
Keyword(s):  
Dimethyl Ether ◽  
Flow Reactor ◽  
New Technology ◽  
Plug Flow ◽  
Light Olefins ◽  
Efficient Production ◽  
Actual Process ◽  
Light Olefin ◽  
Aspen Hysys ◽  
Improved Design

Background: Ethylene, propylene, and butylene as light olefins are the most important intermediates in the petrochemical industry worldwide. Methanol to olefins (MTO) process is a new technology based on catalytic cracking to produce ethylene and propylene from methanol. Aims and Objective: This study aims to simulate the process of producing ethylene from methanol by using Aspen HYSYS software from the initial design to the improved design. Methods: Ethylene is produced in a two-step reaction. In an equilibrium reactor, the methanol is converted to dimethyl ether by an equilibrium reaction. The conversion of the produced dimethyl ether to ethylene is done in a conversion reactor. Changes have been made to improve the conditions and get closer to the actual process design done in the industry. The plug flow reactor has been replaced by the equilibrium reactor, and the distillation column was employed to separate the dimethyl ether produced from the reactor. Result and Conclusion: The effect of the various parameters on the ethylene production was investigated. Eventually, ethylene is

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