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Zhang X.,Changzhou University | Li L.,Changzhou University | Cai Z.,Changzhou University | Zhong J.,Jiangsu Key Laboratory of Fine Petrochemical Engineering | And 3 more authors.
Huagong Xuebao/CIESC Journal | Year: 2012

The molecular mechanics method was introduced in the context of seawater reverse osmosis desalination process to investigate the interaction between membrane materials and water or alginic acid in terms of interaction energy, probability, and mean interaction energy of the H-bond complexes, thus providing theoretical information on the selection of chemicals for membrane modification to promote hydrophilic and antifouling properties. According to molecular mechanics calculation, the order of mean interaction energy between membrane materials and water was PEGMA>PA>SPM>AMPS, and that between these materials and alginic acid was AMPS>PA>SPM>PEGMA, so PEGMA was considered as the best modification chemical among the three chemicals. Using the click chemistry method, a new modified membrane MSW30 was prepared by coating 2-bilayer PEGA onto the polyamide membrane SW30. It was confirmed by contact angle measurements and fouling experiments that the modified membrane MSW30 was more hydrophilic and showed better resistance to fouling by alginic acid than the unmodified membrane SW30, which was also in agreement with the molecular mechanics calculation. Source


Hu Z.-C.,Jiangsu Key Laboratory of Fine Petrochemical Engineering | Yang J.-H.,Jiangsu Key Laboratory of Fine Petrochemical Engineering | Liu Y.-J.,Jiangsu Key Laboratory of Fine Petrochemical Engineering
Xiandai Huagong/Modern Chemical Industry | Year: 2015

After the extraction separation of FCC slurry by amine, the deep catalytic cracking of raffinate oil from slurry oil and blending crude oil is performed. The influences of reaction temperature, ratio of solvent to oil and space velocity on the product distribution, the yield and selectivity of the targeted product are investigated. The obtained raffinate oil can achieve good DCC performance under the following conditions: 9.3 of catalyst to oil, 570℃ of reaction temperature and 14.5 h-1 of space velocity. Under these conditions, the contents of heavy diesel oil, light diesel oil, gasoline, liquefied gas, dry gas and coke are 17.69%, 8.24%, 24.43%, 34.12%, 15.17% and 10.35%, respectively. The ratio of raffinate oil to crude oil should be less than 20%. ©, 2015, China National Chemical Information Center. All right reserved. Source


Meng Y.,Jiangsu Key Laboratory of Fine Petrochemical Engineering | Ye Q.,Jiangsu Key Laboratory of Fine Petrochemical Engineering | Yang J.-H.,Jiangsu Key Laboratory of Fine Petrochemical Engineering
Xiandai Huagong/Modern Chemical Industry | Year: 2015

Through hydrogenation, distillation and aspen simulation, the comprehensive utilization of aromatic hydrocarbon extracted oil and optimization of the separation schemes are studied. A little alkene and benzene in aromatic hydrocarbon extracted oil are eliminated by hydrogenation. Through distillation, 60% and 99% isohexane, 70% and 95% hexane, 95% heptane, 120# solvent oil and gas blending component can be achieved. Based on the difference between the light and heavy key components, four separation schemes are designed. Using aspen simulation, the best operating conditions including numbers of the theoretical plate, feeding position, reflux ratio, etc., are obtained. According to the minimum value of the TAC (total annual cost), the best separation scheme are also determined. The results indicate that the best separation plan is the third one. Its TAC is 26.095 million yuan, which is the least in the four plans. Compared with the first, second and fourth process, the cost saving is about 6.30%, 3.58% and 4.21%, respectively. © 2015, China National Chemical Information Center. All right reserved. Source


Wang H.,Nanjing University of Technology | Wang H.,Jiangsu Key Laboratory of Fine Petrochemical Engineering | Liu D.-H.,Nanjing University of Technology | Liu D.-H.,Jiangsu Key Laboratory of Fine Petrochemical Engineering | And 4 more authors.
Xiandai Huagong/Modern Chemical Industry | Year: 2011

The research progress in the metal complex catalysts for the synthesis of cyclic carbonate from epoxides with CO2 are summarized, and the activation mechanism of epoxides with CO2 for finishing the cycloaddition reaction are discussed systematically, which offers theoretical reference for carbon dioxide chemical utilization and the synthesis of cyclic carbonate form epoxides in technology research, development and application. Source

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