Publications (Cited by EI)

EI论文20-24


2008-06-25
24.Accession number: 04318296440

Title: Analysis to fields synergy for the affinity chromatography in a tapered bed

Authors: Li, Jianjun; Yang, Bolun 

Serial title: Hsi-An Chiao Tung Ta Hsueh/Journal of Xi’an Jiaotong University

Abstract: To provide theoretical basis for the enhancement of affinity chromatography, the synergy of multi fields, such as temperature field, chemical potential field and gravity field in affinity chromatography operated by a tapered bed with the continuous up-flow, were analyzed according to the phenomenological theory, and the relationships among the individual components within a field were investigated. The total entropy production for affinity chromatography and the equations of mass and heat fluxes under the condition of the multi-field synergy were obtained. The research results reveal that the gravitational field can not be neglected in keeping non-equilibrium state of this system, which ensures the stabilization of the tapered bed and prevents from bed clogging. The synergy of the gravitational field with the other fields influences the mass transfer, heat transfer and affinity adsorption in the tapered bed, and the transfer directions depend upon the synergy results.

Abstract type: (Edited abstract)

 

23.Accession number: 04278252472

Title: Dehydration of tert-butyl alcohol in reactive distillation adapted to chemical heat pump

Authors: Zhao, Guosheng; Yang, Bolun 

Serial title: Huagong Xuebao/Journal of Chemical Industry and Engineering (China)

Abstract: The liquid-phase dehydration of tert-butyl alcohol to isobutene and water was researched in a reactive distillation column with a catalyst-bed filled with cation exchange resin S-54 in pellet form. A mathematical model for simulating the steady-state characteristics of this process was developed based on the experimental results. The rapid solution for this model can be obtained by the modified overrelaxation method and simulation results agreed well with the experimental data. The effects of feed flow rates, feed composition, feed location and reflux ratio on reaction conversion were investigated by program simulation. It can be concluded that dehydration of tert-butyl alcohol was facilitated by avoiding strong inhibition of water via reactive distillation. Various heat sources at a lower temperature level below 373 K can be transformed to a higher level heat by adjusting the operation pressure. All these support the applicability of this reaction system to a chemical heat pump.

 

22.Accession number: 04278252469

Title: Kinetics research for synthesis of ethyl tert-amyl ether with synergetic method

Authors: Yang, Bolun; Tao, Xianhu; Yao, Ruiqing; Hua, Ben 

Serial title: Huagong Xuebao/Journal of Chemical Industry and Engineering (China)

Abstract: Synergetic analysis was used for modeling complex reaction kinetics. The synthesis of ethyl tert-amyl ether (TAKE) was chosen as a model system. tert-amyl alcohol and ethanol were raw materials, and the strong acid cationic exchange resin NKC-29 was used as catalysts. The experiments were carried out in liquid phase under atmospheric condition, and temperature range was from 313 K to 323 K. Haken’s formulations were obtained by a non-singularity transformation of the reaction rate differential equations. Using the adiabatic elimination method, the evolutionary relations of reaction order parameters could be obtained. The proposed method avoided solving the complex kinetics differential equations and reduced the number of parameters. Variance analysis proved that the calculated results of the synergetic method agreed well with the experimental results. The values of reaction activation energy were also in a reasonable range.

 

21.Accession number: 05038797931

Title: Simultaneous determination of methyl carbamate and urea based on partial least-squares method

Authors: Lin, Hongye; Sun, Jianjun; Yang, Bolun; Wang, Longyan 

Serial title: Shiyou Huagong/Petrochemical Technology

 

20. Accession number: 04318297046

Title: Simulation of reactive distillation process for esterification of terephthalic acid with ethylene glycol using Aspen Plus

Authors: Zhao, Guosheng; Yang, Bolun; Yin, Xiaobo 

Serial title: Shiyou Huagong/Petrochemical Technology