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Method for preparing phenol acetone using moving bed reactor

A moving bed reactor, phenol acetone technology, applied in chemical instruments and methods, oxygen-containing compound preparation, carbon-based compound preparation, etc., can solve the problems of low selectivity of phenol and acetone, etc.

Active Publication Date: 2018-07-06
SINOPEC SHANGHAI ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the low selectivity of phenol and acetone in the prior art, and a new method for preparing phenol-acetone using a moving bed reactor is provided

Method used

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  • Method for preparing phenol acetone using moving bed reactor

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Embodiment 1

[0017] Take the 100,000 tons / year phenol acetone plant of production scale as example, adopt moving bed reactor of the present invention (as figure 1 As shown), the CHP raw material enters from the top of the reactor, contacts the solid catalyst with the gravity flow, and simultaneously undergoes a decomposition reaction and generates a large amount of heat of formation. The heat generated by the CHP decomposition reaction evaporates the liquid phase acetone in the decomposition product into a gas phase And discharged from the top of the reactor, the discharged gas phase acetone exchanges heat with circulating cooling water in the condenser set above the reactor, and removes the heat of decomposition reaction, while the gas phase acetone condenses into a liquid phase and returns to the reactor. During the normal decomposition reaction process of the catalyst bed, the evaporation and boiling of acetone produces bubbling, so that the catalyst particles are in a flowing state with...

Embodiment 2

[0019] According to the conditions described in embodiment 1, only the production scale of the phenol acetone plant is changed to 200,000 tons / year, adopt the process method of the moving bed reactor of the present invention, the operating temperature of the reactor is 72 ℃, and the operating pressure is 66kPaA; Reaction The length-to-diameter ratio of the reactor is 6:1, and the reactor is filled with 4 stages of catalysts. Accordingly, the selectivity of phenol was 99.50%, and the selectivity of acetone was 99.35%.

Embodiment 3

[0021] According to the conditions described in embodiment 1, only the production scale of the phenol acetone plant is changed to 350,000 tons / year, adopt the process method of the moving bed reactor of the present invention, the operating temperature of the reactor is 72 ℃, and the operating pressure is 66kPaA; Reaction The length-to-diameter ratio of the reactor is 6:1, and the reactor is filled with 4 stages of catalysts. Accordingly, the selectivity of phenol was 99.45%, and the selectivity of acetone was 99.30%.

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Abstract

The invention relates to a method for preparing phenol-acetone by using a moving bed reactor, which mainly solves the problem of low selectivity between phenol and acetone in the prior art. The present invention adopts a method for preparing phenol-acetone using a moving bed reactor. The CHP raw material (6) enters the top of the moving bed reactor (1), contacts with a solid catalyst, undergoes a decomposition reaction and releases a large amount of heat, and evaporates the liquid-phase acetone. Be gaseous phase acetone (7) and discharge from moving bed reactor (1) top, the gaseous phase acetone (7) of discharge is condensed into liquid phase acetone in reactor top condenser (2) and return to moving bed reactor (1) Inside, the technical scheme that the reaction product (10) containing phenol and acetone is discharged from the bottom of the moving bed reactor (1) solves the above problems better, and can be used in the preparation of phenol acetone.

Description

technical field [0001] The invention relates to a method for preparing phenol acetone using a moving bed reactor. Background technique [0002] Adopt cumene hydroperoxide (CHP) to decompose and produce in the operational route of phenol and acetone, traditional decomposition reaction is to utilize liquid acid, as: sulfuric acid is used as catalyst to complete reaction; Patent Application No. 200680034367.9 cumene hydroperoxide Decomposition is to use sulfuric acid as an acid catalyst to decompose CHP to produce phenol acetone. Patent application number CN201210178302.9 relates to a resin catalyst used in the decomposition of cumene hydroperoxide to prepare phenol and its preparation method. It discloses the catalyst required for the decomposition reaction of CHP prepared by polymerization and sulfonation of materials such as ion exchange resins. Patent application number CN201410337795.5 relates to a method for producing phenol / acetone by decomposing cumene hydroperoxide, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C27/00C07C37/08C07C39/04C07C45/53C07C49/08
CPCY02P20/584
Inventor 杨军黄承明徐尔玲李真泽张斌何琨
Owner SINOPEC SHANGHAI ENG
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