Shaanxi Research and Design Institute of Petroleum and Chemical Industry

Fengcheng, China

Shaanxi Research and Design Institute of Petroleum and Chemical Industry

Fengcheng, China

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Yang Z.,Shaanxi Research and Design Institute of Petroleum and Chemical Industry | Gong F.,Shaanxi Research and Design Institute of Petroleum and Chemical Industry | Qi Y.,Shaanxi Research and Design Institute of Petroleum and Chemical Industry
Huaxue Fanying Gongcheng Yu Gongyi/Chemical Reaction Engineering and Technology | Year: 2016

The synthesis of piperazine via amination reaction was conducted in a fixed bed reactor using ethylene glycol as raw material. The active components and supports of the catalyst were screened. The effects of reaction temperature, reaction pressure, liquid hourly space velocity of ethylene glycol, molar ratio of ammonia to glycol and molar ratio of hydrogen to glycol on amination reaction were systemically investigated. The results indicated that Ni-Cu bimetal composite was the appropriate active component and mordenite zeolite as support presented higher selectivity for the synthesis of piperazine. Under the conditions of reaction temperature of 230℃, reaction pressure of 10 MPa, liquid hourly space velocity of ethylene glycol 0.2 h-1, molar ratio of ammonia to glycol 30, and molar ratio of hydrogen to glycol 1, amination reaction proceeded smoothly with the glycol conversion of 42% and piperazine selectivity of 75%. © 2016, Editorial Board of Journal of Chemical Reaction Engineering and Technology. All right reserved.


Hou W.,Shaanxi Research and Design Institute of Petroleum and Chemical Industry | Chen X.,Shaanxi Research and Design Institute of Petroleum and Chemical Industry | Liu S.,Shaanxi Research and Design Institute of Petroleum and Chemical Industry | Xu L.,Shaanxi Research and Design Institute of Petroleum and Chemical Industry
Petroleum Processing and Petrochemicals | Year: 2012

A method for fast evaluating the performance of FCC slurry antifoulant in laboratory is introduced. Using an autoclave with stirring, the suitable test conditions are obtained by orthogonal tests as follows:an antifoulant added amount of 100 mg/L, heat to 500 °C and hold for 4 h. The test results obtained by this modified static evaluation method are compared with those from the dynamic simulation method, and their trends of ranging antifoulants by fouling inhibited rates are in good agreement, which indicates that this method could be used to fast evaluate slurry antifoulant in laboratory.

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