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Device and process for continuously producing 2-ethyl anthracene quinone in channelization way

A pipeline-based technology for ethylanthraquinone, which is applied in the equipment and process field of pipelined continuous production of 2-ethylanthraquinone, can solve the problems of complicated mixing equipment and microwave equipment, easy corrosion of static mixer units, and poor production environment. To achieve large-scale production, easy control of reaction conditions, and stable product quality

Inactive Publication Date: 2010-01-27
ZHEJIANG JINKE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method reduces the amount of fuming sulfuric acid and has a good yield, but the powder made from raw materials still has the problems of relatively large dust and poor production environment, and the mixing device and microwave device have complex processes and pipeline reactions. The built-in static mixer unit is prone to corrosion

Method used

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  • Device and process for continuously producing 2-ethyl anthracene quinone in channelization way
  • Device and process for continuously producing 2-ethyl anthracene quinone in channelization way
  • Device and process for continuously producing 2-ethyl anthracene quinone in channelization way

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Experimental program
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Effect test

Embodiment 1

[0029] devices such as figure 1 As shown, storage tank I providing molten BEA and oleum storage tank II are respectively connected to any two inlets of Y-shaped jet mixer by respective metering pumps, and the outlet of the mixer is connected to the tube reactor, and the tube reactor The outlet is connected to the hydrolysis kettle. The reduced diameter of the inlet of the mixer is Φ1=4mm, the diameter of the outlet is Φ2=4mm, and the incident angle θ is 45 degrees. The tubular reactor is a tubular reactor with an inner diameter of Φ3=4mm and a length of 30m.

Embodiment 2

[0031] Adopt the equipment of embodiment 1, BEA is preheated to 120 ℃, 20%SO 3 Fuming sulfuric acid is preheated to 80°C, enters the Y-type jet mixer to mix, and then enters the tubular reactor. The mass ratio of BEA and oleum is 1:3, the incident angle θ is 30 degrees, and the reaction temperature is controlled at 120°C. ℃, residence time 10min, flow rate 2.2L / h, then enter the hydrolysis tank for hydrolysis, the yield is 90%.

Embodiment 3

[0033] Adopt the equipment of embodiment 1, BEA is preheated to 190 ℃, 20%SO 3 Fuming sulfuric acid is preheated to 60°C, mixed in a Y-shaped jet mixer, and then enters a tubular reactor. The mass ratio of BEA and oleum is 1:1, the incident angle θ is 60 degrees, and the reaction temperature is controlled at 180°C. ℃, residence time 2min, flow rate 11.3L / h, then enter the hydrolysis tank for hydrolysis, the yield is 92%.

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Abstract

The invention discloses a device and a process for continuously producing 2-ethyl anthracene quinone in a channelization way. The device is shown in the figure, and the process is specifically shown as below: putting fuming sulfuric acid in a second storage tank; putting solid raw material 2-(4- ethyl benzene formoxyl) benzoic acid in a storage tank I; rising the temperature to 125-190 DEG C to keep the 2-(4- ethyl benzene formoxyl) benzoic acid in a liquid state; rapidly and evenly mixing the 2-(4- ethyl benzene formoxyl) benzoic acid in the storage tank I and the fuming sulfuric acid in a storage tank II in a Y-type jet mixer; and then filling the mixture in a pipe-type reactor, controlling the reaction temperature in the pipe-type to be 120-180 DEG C and the reaction time to be 2-10 min; and hydrolyzing the obtained reaction liquid in a hydrolization pot to separate out the product 2-ethyl anthracene quinone. The device has the advantages of simplicity, high process safety, easy control of reaction conditions, realization of serialization production, productivity reaching more than 90 percent, stable product quality and large scale industrial production by only less investment.

Description

(1) Technical field [0001] The invention relates to a process and device for synthesizing anthraquinone derivatives by using 2-(4-ethylbenzoyl)benzoic acid (BEA) as an acylating agent through acid-catalyzed Friedel-Crafts dehydration, especially 2-ethylanthraquinone Pipelined continuous production process and equipment. (2) Background technology [0002] 2-Ethylanthraquinone (2-EAQ) is the main raw material and intermediate for the production of hydrogen peroxide, photosensitive compounds, dyes and degradable resins by anthraquinone method. The production of hydrogen peroxide by the anthraquinone method can greatly reduce the production cost of hydrogen peroxide, and the power consumption is only 1 / 10 of that of the electrolysis method. It is currently the main method for producing hydrogen peroxide. Therefore, the development of hydrogen peroxide and its related manufacturing industry needs to develop 2-EAQ first. [0003] At present, 2-ethylanthraquinone is mainly produc...

Claims

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Application Information

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IPC IPC(8): C07C50/18C07C46/00
Inventor 苏为科李坚军林守望金参梁潘冬明
Owner ZHEJIANG JINKE CHEM
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