Method for reducing energy consumption of oxidizing reaction unit of phenol-acetone device

An oxidation reaction, phenol acetone technology, applied in chemical instruments and methods, preparation of oxygen-containing compounds, preparation of peroxy compounds, etc., can solve the problem of high energy consumption, and achieve the effect of increasing pipeline resistance and increasing power consumption

Active Publication Date: 2015-04-01
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 problem of high energy consumption in the prior art

Method used

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  • Method for reducing energy consumption of oxidizing reaction unit of phenol-acetone device

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] [Example 1]

[0019] In such figure 1 In the device process shown, the cumene raw material feed line (1) with a mass content of cumene of 66.1% exchanges heat with the reflux material of the oxidation tower through the oxidation tower heat exchanger (2), and the heated cumene The benzene raw material is preheated to 55°C by the preheater (4) and then enters the oxidation tower (6), and undergoes oxidation reaction with the air introduced through the air inlet line (7); the top of the oxidation tower (6) contains a small amount of cumene The tail gas with water is sent to the outside through the gas phase outlet pipeline (5); the liquid phase material containing cumene and cumene hydrogen peroxide in the oxidation tower (6) is pressurized by the booster pump (8), and part of the liquid phase The material is sent as an oxidation product, and a part of the oxidation product (9) enters the oxidation tower heat exchanger (2) through the return line to exchange heat with the cu...

Example Embodiment

[0024] [Example 2]

[0025] According to the conditions and steps described in Example 1, the production scale of phenol acetone was changed to 200,000 tons / year. It can reduce the consumption of low-pressure steam by 3.80 tons / hour and the consumption of circulating cooling water by 203 tons / hour.

Example Embodiment

[0026] [Example 3]

[0027] According to the conditions and steps described in Example 1, only the production scale of phenol acetone was changed to 350,000 tons / year. It can reduce the consumption of low-pressure steam by 6.65 tons / hour and reduce the consumption of circulating cooling water by 354 tons / hour.

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Abstract

The invention relates to a method for reducing the energy consumption of an oxidizing reaction unit of a phenol-acetone device in order to mainly solve the problem of relatively high energy consumption caused in the prior art. The method for reducing the energy consumption of the oxidizing reaction unit of the phenol-acetone device comprises the following steps: exchanging the heat of an isopropylbenzene material flow (1) and a bottom backflow material of an oxidation tower (6) by an oxidation tower heat exchanger (2); further preheating the isopropylbenzene material flow (1) and then charging the isopropylbenzene material flow (1) into the oxidation tower (6); conveying a tower top material flow (5) to a tail gas treatment unit; charging a part of a liquid phase material flow at the bottom of the tower into an oxidation product outlet pipeline (9) and charging the other part of the material flow into the oxidation tower heat exchanger (2) to exchange heat with the material flow (1), and then returning to the oxidation tower (6). The method disclosed by the invention can be used for commendably solving the problem and can be applied to an oxidation reaction of the phenol-acetone device.

Description

technical field [0001] The invention relates to a method for reducing energy consumption of an oxidation reaction unit of a phenol-acetone plant. Background technique [0002] Phenol is a colorless needle-like crystal with a special smell, and is a versatile raw material for chemical production. Acetone is a common, highly volatile chemical solvent. Patent Application No. US20110301384A1 Cumene Oxidation System and Patent Application No. CN200580006398.9 The Manufacturing Method of Cumene Hydroperoxide, which introduces the oxidation reaction of cumene and oxygen-containing gas by wet method and dry method to prepare hydrogen peroxide Cumene process. Patent application number CN201120437887.2 relates to a continuous cumene oxidation system with external heat removal. The oxidation tower is connected to the oxidation external circulation cooler and circulation pump, and the oxidation product exchanges heat with the circulating cooling water to realize the cumene oxidation r...

Claims

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Application Information

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IPC IPC(8): C07C409/10C07C407/00C07C27/00C07C39/04C07C37/08C07C45/53C07C49/08
Inventor 杨军施竞怡何琨
Owner SINOPEC SHANGHAI ENG
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