Method for preparing phenol-acetone through movable 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: 2016-01-06
SINOPEC SHANGHAI ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is the low selectivity of phenol and ace

Method used

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  • Method for preparing phenol-acetone through movable 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 through a movable bed reactor. The method mainly solves the problem that in the prior art, selectivity of phenol and acetone is low. According to the technical scheme, a CHP raw material (6) enters the top of the movable bed reactor (1) to make contact with a solid catalyst, a decomposition reaction is conducted, a large amount of heat is dissipated, liquid-phase acetone is evaporated into gas-phase acetone (7) to be discharged out of the top of the movable bed reactor (1), the discharged gas-phase acetone (7) is condensed into the liquid-phase acetone in a condenser (2) on the top of the reactor, the liquid-phase acetone is returned to the inner portion of the movable bed reactor (1), a reaction product (10) containing phenol and acetone is discharged out of the bottom of the movable bed reactor (1), and therefore the problems are solved, and the method can be used for preparing 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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IPC IPC(8): C07C27/00C07C37/08C07C39/04C07C45/53C07C49/08
CPCY02P20/584C07C37/08C07C45/53C07C39/04C07C49/08
Inventor 杨军黄承明徐尔玲李真泽张斌何琨
Owner SINOPEC SHANGHAI ENG
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