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Process and system for making cyclohexanone

A kind of technology of cyclohexanone and cyclohexylbenzene, applied in the field of preparing cyclohexanone, can solve problems such as yield loss

Inactive Publication Date: 2016-03-02
EXXONMOBIL CHEM PAT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since phenol / cyclohexanone mixtures always contain non-negligible amounts of cyclohexylbenzene which can be converted to dicyclohexane in the hydrogenation step, and since hydrogenation of phenol / cyclohexanone / cyclohexylbenzene mixtures also leads to the formation of Cyclohexanol, resulting in a loss of yield, so such a method presents challenges

Method used

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  • Process and system for making cyclohexanone
  • Process and system for making cyclohexanone
  • Process and system for making cyclohexanone

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Embodiment Construction

[0029] Various specific embodiments, versions and examples of the present invention will now be described, including preferred embodiments and definitions employed herein for understanding the claimed invention. While the following detailed description presents certain preferred embodiments, those skilled in the art will appreciate that these embodiments are exemplary only and that the invention may be practiced in other ways. For purposes of determining infringement, the scope of the present invention will refer to any one or more of the appended claims, including their equivalents, and elements or limitations equivalent to those recited. Any reference to "invention" may refer to one or more, but not necessarily all, of the inventions defined by the claims.

[0030] In this disclosure, methods are described as comprising at least one "step." It is to be understood that each step is an operation or run that can be performed one or more times in the method, either continuously...

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Abstract

Disclosed are processes and systems for making cyclohexanone from a mixture comprising phenol, cyclohexanone, and cyclohexylbenzene, comprising a step of or a device for subjecting at least a portion of the mixture to hydrogenation and a step of or a device for distilling a phenol / cyclohexanone / cyclohexylbenzene mixture to obtain an effluent rich in cyclohexanone.

Description

[0001] Priority claims and related applications [0002] This application claims priority to US Provisional Application 62 / 037,814, filed August 15, 2014, and European Patent Application 14188468.4, filed October 10, 2014, the disclosures of which are hereby incorporated by reference in their entirety. technical field [0003] The present invention relates to methods and systems for the preparation of cyclohexanone. In particular, the present invention relates to methods and systems for the production of cyclohexanone by hydrogenation of phenol. The invention is useful, for example, in the preparation of cyclohexanone by oxidation of cyclohexylbenzene and cleavage of cyclohexylbenzene hydroperoxide. Background technique [0004] Cyclohexanone is an important raw material in the chemical industry and is widely used, for example, in the production of phenolic resins, bisphenol A, ε-caprolactam, adipic acid, and plasticizers. One way to prepare cyclohexanone is by hydrogenati...

Claims

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Application Information

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IPC IPC(8): C07C49/403C07C45/51
CPCC07C45/512C07C49/403C07C2601/14C07C45/006B01D3/14B01D3/36C07C45/82
Inventor C·L·贝克尔J·D·戴维斯J·M·达卡K·C·纳德勒尔
Owner EXXONMOBIL CHEM PAT INC
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