公开(公告)号：US11118115B2

公开(公告)日：2021-09-14

申请号：US16903220

申请日：2020-06-16

Applicant: ExxonMobil Research and Engineering Company

Inventor： Mohsen N. Harandi ,  Suriyanarayanan Rajagopalan ,  David W. Staubs ,  Terry E. Helton ,  Mitch L. Hindman

IPC: C10G3/00 ,  B01D3/00 ,  C10G7/04 ,  C10G7/08

Abstract: Methanol-to-gasoline (MTG) conversion may be performed with a methanol recycling. Methanol may be fed to a first reactor where it may be catalytically converted under dimethyl ether formation conditions in the presence of a first catalyst to form a product mixture comprising dimethyl ether (DME), methanol, and water. The DME may be separated from the methanol and the water and delivered to a second reactor. In the second reactor, the DME may be catalytically converted under MTG conversion conditions in the presence of a second catalyst to form a second product mixture comprising gasoline hydrocarbons and light hydrocarbon gas. The methanol and the water from the first reactor may be separated further to obtain substantially water-free methanol, which may be returned to the first reactor. The separation of methanol from the water may be performed using the light hydrocarbon gas to effect stripping of the methanol.

公开(公告)号：US11130915B2

公开(公告)日：2021-09-28

申请号：US16903252

申请日：2020-06-16

Applicant: ExxonMobil Research and Engineering Company

Inventor： Mohsen N. Harandi ,  Suriyanarayanan Rajagopalan ,  David W. Staubs ,  Terry E. Helton ,  Mitch L. Hindman

IPC: C10G3/00 ,  B01D3/00 ,  C07C41/09 ,  C10L1/06 ,  C07C41/42

Abstract: Methanol-to-gasoline (MTG) conversion may be performed with forward methanol processing. Methanol may be fed to a first reactor where it may be catalytically converted under dimethyl ether formation conditions in the presence of a first catalyst to form a product mixture comprising dimethyl ether (DME), methanol, and water. The DME may be separated from the methanol and the water and delivered to a second reactor. In the second reactor, the DME may be catalytically converted under MTG conversion conditions in the presence of a second catalyst to form a second product mixture comprising gasoline hydrocarbons and light hydrocarbon gas. The methanol and the water from the first reactor may be separated further to obtain substantially water-free methanol, which may be delivered to the second reactor. The separation of methanol from the water may be performed using the light hydrocarbon gas to effect stripping of the methanol.

公开(公告)号：US20200239785A1

公开(公告)日：2020-07-30

申请号：US16741906

申请日：2020-01-14

Applicant: ExxonMobil Research and Engineering Company

Inventor： Charles R. Bolz ,  Suriyanarayanan Rajagopalan ,  Mohsen N. Harandi ,  David W. Staubs

IPC: C10G19/02 ,  C10G53/12

Abstract: Systems and processes for removing organic acids from liquid hydrocarbon product streams are provided. The systems and processes can include injecting an ammoniated water wash into a liquid hydrocarbon product stream, such as an effluent stream from a methanol conversion process, and subsequently separating the treated liquid hydrocarbon product stream from the wash water. The addition of ammonia can reduce the amount of water wash by an unexpected amount.