A kind of production method of diaminodiphenyl ether
A technology of diaminodiphenyl ether and its production method, which is applied in the fields of chemical instruments and methods, the preparation of amino hydroxyl compounds, and the preparation of organic compounds, etc., and can solve the requirements of heavy water treatment burden, long process heating and constant temperature time, and sublimation process technical conditions High-level problems, to achieve the effect of less residual salt impurities and sewage, simple cleaning and post-treatment, and low risk of safety and energy saving
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[0023] Below in conjunction with accompanying drawing, the present invention is described in further detail as follows:
[0024] The high-efficiency, energy-saving and environmentally friendly new diaminodiphenyl ether production line of the present invention was developed and implemented during the "10000T / year recrystallization method production of high-purity diaminodiphenyl ether project" by Guansen Insulation Products Co., Ltd., Dongying City, Shandong Province.
[0025] like figure 1 Shown: A new type of diaminodiphenyl ether production line with high efficiency, energy saving and environmental protection to produce 4,4'-dinitrodiphenyl ether 4, 4,4'-diaminodiphenyl ether crude product 5, purity ≥ 99.9%4 , 4'-diaminodiphenyl ether 6 and product 7 are divided into four stages: condensation reaction, reduction reaction, refining and purification, and dry packaging. The main input material 1, process 2 and product 3 are summarized into three parts.
[0026] In the process ...
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