Process for producing C1-C4 alkyl nitrite

US8476469B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC · CN

Inventors

• Juntao Liu · Lo Wu, CN
• Weimin Yang · Shanghai, CN
• Wanmin Wang · Shanghai, CN
• Linna Zhang · Shanghai, CN

Key dates

• Filing date: Apr 14, 2011
• Grant date: Jul 2, 2013
• Expiry date: Jan 30, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C201/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process of producing C1-C4 alkyl nitrite, comprising the following steps: a) firstly feeding nitrogen oxide and oxygen into Reactor I, contacting with an aluminosilicate catalyst, and reacting to produce an effluent I containing NO2 and unreacted NO; b) feeding the effluent I and C1-C4 alkanol into Reactor II, and reacting to produce an effluent II containing C1-C4 alkyl nitrite; and c) separating the effluent II containing C1-C4 alkyl nitrite to obtain C1-C4 alkyl nitrite; wherein reactor I is a fixed bed reactor, and Reactor II is a rotating high-gravity reactor; said nitrogen oxide in step a) is NO, or a mixed gas containing NO and one or more of N2O3 and NO2, wherein the molar number of NO is greater than that of NO2, if any; and the molar ratio of NO in nitrogen oxide to oxygen is 4-25:1.