Removal method for purifying ethelene glycol monophenyl ether

A technology of ethylene glycol phenyl ether and isopropanol, which is applied in chemical instruments and methods, ether preparation, organic chemistry, etc., can solve the problems of high energy consumption, difficulty, and high production technology requirements, and achieve low energy consumption for refining, low cost effect

Inactive Publication Date: 2015-09-09
江苏常州酞青新材料科技有限公司
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Problems solved by technology

The content of diethylene glycol phenyl ether in the common first-grade product ethylene glycol phenyl ether is required to be less than 0.1%, and the ordinary vacuum distillation method not only requires high energy consumption, but also requires high production technology
In order to solve this technical problem, many domestic ethylene glycol phenyl ether production enterprises have invested a lot of technical research efforts, but due to the further reduction of the trace diethylene glycol phenyl ether content in ethylene glycol phenyl ether, it is difficult and has been troubled Product Quality Problems of Domestic Ethylene Glycol Phenyl Ether Manufacturers

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  • Removal method for purifying ethelene glycol monophenyl ether

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Embodiment Construction

[0011] A removal method for purifying ethylene glycol phenyl ether, which uses a synthetic adsorption separation material (A) to disperse in ethylene glycol phenyl ether. Wherein the synthetic adsorption separation material (A) comprises:

[0012] (1) Use hydroxypropyl methylcellulose with a gelling temperature above 80° C., and use room temperature deionized water to prepare a 0.05% polymer solution. Dispersing calcium carbonate with a fineness of less than 700 meshes in the polymer solution, the amount of calcium carbonate is 10% of the amount of deionized water;

[0013] (2) Use an isopropanol solution with a mass concentration not higher than 7% aluminum isopropoxide, and add it to the aforementioned sol at room temperature in an equimolar ratio between aluminum isopropoxide and calcium carbonate;

[0014] (3) After the addition of aluminum isopropoxide is completed, slowly raise the temperature of this mixed system from room temperature to 50-65°C at a rate of no more th...

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Abstract

The invention discloses a removal method for purifying ethelene glycol monophenyl ether. A synthesized adsorption separation material is dispersed in ethelene glycol monophenyl ether, a content control technology of diethelene glycol monophenyl ether during the refining process in the conventional ethelene glycol monophenyl ether refining production process is improved, the technical problem of control of a trace of diethelene glycol monophenyl ether is solved, and the refining and purifying processes, through which the content of diethelene glycol monophenyl ether is lower than 800 ppm being difficult to achieve through common rectificating, become simple, convenient and easy. During the production and processing processes, the cost is low, the refining energy consumption is low, the removal method is suitable for ethelene glycol monophenyl ether production enterprises to use traditional equipment and traditional technical conditions, and a high-quality ethelene glycol monophenyl ether product is obtained.

Description

technical field [0001] The invention relates to a removal method for purifying ethylene glycol phenyl ether. Background technique [0002] At present, domestic ethylene glycol phenyl ether synthesis methods are generally obtained by direct catalytic synthesis of propylene oxide and diethylene glycol phenyl ether. Using this synthetic method, there will inevitably be traces of diethylene glycol phenyl ether impurities. The industrial method for reducing traces of diethylene glycol phenyl ether is mainly to use vacuum distillation to remove ethylene glycol benzene as much as possible. Diethylene glycol phenyl ether in ether. The content of diethylene glycol phenyl ether in the common first-grade product ethylene glycol phenyl ether is required to be less than 0.1%, and the ordinary vacuum distillation method not only requires high energy consumption, but also requires high production technology. In order to solve this technical problem, many domestic ethylene glycol phenyl e...

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Application Information

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IPC IPC(8): C07C43/23C07C41/36B01J20/24
CPCC07C41/36B01J20/24C07C43/23
Inventor 陈晓洲蒋明
Owner 江苏常州酞青新材料科技有限公司
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