Patent · US Active

Process for producing cumene

US9259722B2 · kind B2 · utility

2Cited by

0References

17Claims

0Family size

Assignee

BADGER LICENSING LLC · US

Inventors

Ronald Birkhoff · Spring, US
Shyh-Yuan H. Hwang · Cambridge, US

Key dates

Filing date	Jul 23, 2013
Grant date	Feb 16, 2016
Priority date	—
Expiry date	Jul 23, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/52
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

In a process for producing cumene, benzene and a C3 alkylating agent comprising isopropanol are supplied to an alkylation zone comprising a molecular sieve alkylation catalyst under alkylation conditions such that the isopropanol reacts with the benzene to produce a reaction product comprising cumene. Subsequently, the supply of benzene and C3 alkylating agent to the alkylation zone is ceased and a gaseous stripping agent is supplied to the molecular sieve alkylation catalyst under conditions effective to remove nitrogenous impurities deposited on the catalyst during the preceding alkylation reaction. The supply of benzene and C3 alkylating agent to the alkylation zone is then reinitiated.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.