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Process for synthesizing phenol and acetone

一种苯酚、丙酮的技术，应用在合成苯酚及丙酮领域，能够解决分解反应不利、干扰官能度、限制等问题

Inactive Publication Date: 2008-10-01
EUROTECNICA CONTRACTORS & ENGINEERS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The presence of this cation is particularly detrimental to the subsequent decomposition reactions to produce phenol and acetone since it interferes with the functionality of the acidic resin which can be effectively used as a catalyst for the decomposition reaction
This factor has limited the choice of conventional mineral acids as acidic catalysts, especially sulfuric acid
However, strong inorganic acids such as sulfuric acid involve considerable safety concerns both in use and in waste disposal conditions

Method used

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  • Process for synthesizing phenol and acetone
  • Process for synthesizing phenol and acetone

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Embodiment

[0036] This embodiment describes a method implemented in the device shown in FIG. 1 .

[0037] Cumene hydroperoxide (CHP) with a purity of 93% and 16.4 mg of sodium cation per kg of CHP was introduced into a tank containing 600 kg of Amberlyst at a flow rate of 6 tons / hour. TM 18 ion exchange resin pretreatment reactor 1a. The reactor temperature was maintained below 20°C by a cooling jacket.

[0038]The CHP present in the pretreatment reactor 1a was analyzed by atomic absorption and no trace of sodium cations could be detected. Then the CHP, after having been mixed with 54 t / h of recycled decomposition products at a temperature of about 40°C, eg below the specified temperature, is transported along line B to the Amberlyst containing 6 t / h. TM 18 in the decomposition reactor 3.

[0039] The decomposition reactor 3 is suitably cooled by means of a cooling jacket 4 such that the temperature of the reaction products present in this reactor is approximately 42°C, although the e...

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Abstract

This invention refers to a process for the synthesis of phenol and acetone starting from cumene hydroperoxide, and to a plant specifically developed for performing this process. More in particular, this invention refers to a process for the synthesis of phenol and acetone starting from cumene hydroperoxide, comprising the following steps: a) Pretreating of the starting cumene hydroperoxide with acidic resins, to obtain cumene hydroperoxide free of inorganic cations; b) Decomposing of the cumene hydroperoxide from of inorganic cations originating from the step (a) in the presence of acidic resins, to yield phenol and acetone.

Description

technical field [0001] The present invention relates to a process for the synthesis of phenol and acetone starting from cumene hydroperoxide. Background technique [0002] It is well known that the most widely used industrial method for the synthesis of phenol is to provide a decomposition reaction of cumene hydroperoxide. At present, more than 90% of phenol in the world is synthesized by this approach, and the decomposition reaction is carried out according to the following reaction equation, that is, 1 mole of acetone is produced while generating every mole of phenol: [0003] C 6 h 5 -C(Me) 2 -OOH→C 6 h 5 -OH+MeCOMe [0004] Cumene hydroperoxide is prepared by oxidation of cumene with air in the liquid phase: [0005] C 6 h 5 -C(Me) 2 +O 2 →C 6 h 5 -C(Me) 2 -OOH [0006] The major by-products of this reaction are acetophenone, dimethylbenzyl alcohol, and formic acid. [0007] The latter, in particular, has the catalytic ability to partially decompose this ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C37/08C07C45/53C07C39/04C07C49/08B01J31/10B01J19/00B01J8/20
CPCC07C45/53B01J8/20B01J2208/0015B01J2208/0053C07C49/08
Inventor 佛朗哥·科迪尼奥拉
Owner EUROTECNICA CONTRACTORS & ENGINEERS
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