关闭×
化学工业与工程
Home
|
|
About Journal
|
Editorial Board
|
Instruction
|
Subscriptions
|
Download
|
Publication Ethics
|
Contacts Us
|
Chinese
化学工业与工程
Office
Author Center
Peer Review
Editor Work
Office Work
Editor-in-chief
Journal
Current Issue
Next Issue
Archive
Advanced Search
Read Articles
Download Articles
Email Alert
Current Issue
1997 Vol.14 Issue.1,
Published 1997-01-15
Article
Article
3
An Extensively Applicable Method for the Evaluation of Heat Transfer Parameters of a Fixed—Bed Reactor
Cheng Zhenmin Yuan Weikang
The classical relationship of the heat transfer parameters between one—dimensional and two—dimensional models:1U=1h w +R4K er is found only valid when Bi <1 808,which is in disagreement with the normal Bi values of being 1 1 to 10. In considering of this, a new relationship consisting of U=λ 1 22RK er , λ 1 2=12(1-1 33A-0 33) and Bi=λ 1 24 exp (-aλ 1 2L)T 0-T w T(L,m)-T w -λ 1 2 is introduced, with its validity extended to Bi 10 53, which implies that this relation can practically be used without any limitation in the whole fixed—bed reactor operation domain. Simultaneously, the analytical method makes the estimation of K er irrelevant with the relationship between the two parameters,therefore the two parameters can be separately estimated. A numerical analysis has been made upon the famous heat transfer experiment by Coberly and Marshall(1951), and some suggestion is given on the basis of the inherent problem exposure.
1997 Vol. 14 (1): 3-8 [
Abstract
] (
1964
) [
HTML
0KB] [
PDF
0KB] (
8
)
9
Solid-Liquid Equilibrium for NaCl+2 Propanol (or 1,2 Propylene glycol、or Glycol)+Water Systems
Liu Wenbin Wang Jianji Zhuo Kelei Lu Jinsuo
The freezing point of the system of NaCl+2 Propanol(or 1,2 Propylene glycol、or Glycol)+Water at normal pressure have been determined with the freezing point apparatus. A linear relationship was found between the freezing point and the concentration of the salt at fixed relative composition of the solvents. A linear equation was derived by using thermodynamic theory and the existance of the linear relationship was analyzied with Gibbs phase rule. The effect of NaCl on the structure and property of the mixed solvent have also been discussed.
1997 Vol. 14 (1): 9-15 [
Abstract
] (
1781
) [
HTML
0KB] [
PDF
0KB] (
7
)
16
Calculation of Explosive Limits of Technical Gas of Synthetic Ammonia under
Ordinary Temperature and Pressure Ding Sougen
The formula for calculating explosive limits of technical gas of synthetic ammonia that is made up freely under ordinary temperature and pressure is obtained on the basis of the analysis and regression of data form experiments.
1997 Vol. 14 (1): 16-21 [
Abstract
] (
1716
) [
HTML
0KB] [
PDF
0KB] (
8
)
22
Mechanism of Microencapsulation of Ultramarine Particle and Surface Fractal Dimensionality
Yang Guiqin Yan Lemei Zhang Wandong Cui Jianzhong Guo Congrong Wang Xuesong
In this paper,microencapsulation mechanism of ultramarine particles in W/O emulsion was investigated.We made an approach to the relationship between surface fractal dimensionality(D) and surface shape of particles.The results show:In W/O emulsion, ultramarine particles get into aqueous beads of emulsion , forming “microreactor”. The reaction of microencapsulation takes place on the surface of particles in beads of W/O emulsion, which forms membrane of silicagel capsule,and the acid-resistance of ultramarine can be effectively improved. Shape of particle surface can be quantitatively characterized by surface fractal dimensionality.Value D may be used for explaining acid-reistance of ultramarine.
1997 Vol. 14 (1): 22-26 [
Abstract
] (
2627
) [
HTML
0KB] [
PDF
0KB] (
8
)
27
Study on Properties of Polyurethane/Furan Interpenetrating Polymer Networks
Guan Yunlin Liu Xiaofei Fu Qiang
An interpenetrating polymer network (IPN) was prepared from polypropylene glycol polyurethane (PU) and furfuralcohol resin or HF9200A epoxy furan resin (FA).The kinetics of IPN formation and behavior of microphase separation were analysed by infra-red spectrum and scanning electron microscope. The mechanical properties with varied PU/FA ratio were also investigated. The experimental results showed that at a certain value of PU/FA, the synergism of IPN occured, accordingly the rigidity of polyurethane and the impact strength of furan resin were improved.
1997 Vol. 14 (1): 27-31 [
Abstract
] (
2229
) [
HTML
0KB] [
PDF
0KB] (
8
)
32
Research Advance in Affinity Filtration He Lizhong Sun Yan
This paper describes the principle of and the research activities on affinity filtration for protein purifications.general methods for prepairing affinity filtration system are reviewed. Multistage affinity filtration is proposed for future studies.
1997 Vol. 14 (1): 32-37 [
Abstract
] (
1768
) [
HTML
0KB] [
PDF
0KB] (
8
)
38
The Study on Fiber—Reinforced Epoxy Foam composites
Xu Xinhua Fang Dongpu Chen Yirui Zhang Shuangnan
In this paper, fiber-reinforced epoxy foam composites are investigated.The results show that both the tensile strength and bending strength of epoxy foam composites reinforced by fibers increase significantly and fiber-reinforced epoxy foam composites have lower density and higher strength as compared with those not reinforced
1997 Vol. 14 (1): 38-42 [
Abstract
] (
1651
) [
HTML
0KB] [
PDF
0KB] (
7
)
43
Temperature Profile in Hot-filament CVD System and Temperature Distribution in Its Substrate Surface
Tang Biyu Jing Jiuchen Xia Jintong Cheng Zhongzhang
Temperature profile in single and multi filament CVD system and temperature distribution in the substrate surface were analysised based on a simplified model and the addition principle respectively.The temperature distribution of the deposition area obtained from them and the growth rate distribution obtained from the growth rate substrate temperature curve conformed to the exprimental results.
1997 Vol. 14 (1): 43-47 [
Abstract
] (
1654
) [
HTML
0KB] [
PDF
0KB] (
8
)
48
Synthesis and Properties of Organo Tin Carboxylates
Wei Rongbao Liang Ya Lu Shirong Han Baocheng Gao Tienan
Through reactions of bis(β alboxy carbonyl alkyl)tin dichlorides with various carboxylic acids,a series of new organo tin carboxylates were prepared.Experimental parameters affecting the reaction were discussed.The new synthesized organo tin compounds have potential application for thermostabilizer in PVC resins.
1997 Vol. 14 (1): 48-53 [
Abstract
] (
1741
) [
HTML
0KB] [
PDF
0KB] (
8
)
54
Preparation and Identification of Hydrotalcite
Meng Fanhao Feng Wenli
Hydrotalcite is an ideal natural drug which showed high activities of antiulcer and antacid, It was made from aluminum hydroxide and magnesium hydroxide by a one step process in room temperature and atomospheric pressure. Synthetic hydrotalcite was identified by measurement of elemental analysis, IR Spectrum,differential thermal analysis and Powder X-ray diffraction.
1997 Vol. 14 (1): 54-56 [
Abstract
] (
2209
) [
HTML
0KB] [
PDF
0KB] (
7
)
57
Comparision of Various processes for Producing Polymerized Ferric Sulphate
Ruan Fuchang Gong Guoqing Mo Binglu Lu Yanling
Methods developped for production of polymerized ferric sulphate and their characteristics are reviewed.A kinetic study on synthesis of polymerized ferric sulphate is put forward,which gives a theoretical foundation on the development of new methods and new processes for production of polymerized ferric sulphate.
1997 Vol. 14 (1): 57-61 [
Abstract
] (
1793
) [
HTML
0KB] [
PDF
0KB] (
7
)
62
Application of Falling Film Evaporators in Vitamin C Industry
Zhao Yuanjun
Multiple-effect falling film evaporators are used to replace single-effect rising film evaporators for the concentration of Vitamin C.The device can meet corrosion-resistant requirement.It not only improves the quality of products,but also reduces operation and maintenance costs.It is of great significance in the development of Vitamin C industry.
1997 Vol. 14 (1): 62-64 [
Abstract
] (
1785
) [
HTML
0KB] [
PDF
0KB] (
8
)
News
More
·
《化学工业与工程》入编2020年版《中文核心期刊要目总览》
·
·
《化学工业与工程》创刊30周年庆
·
·
2012年第4期目录
·
2012年第3期目录
·
·
Links
More
·
www.ccs.ac.cn
·
www.tju.edu.cn
Copyright ©2020 Chemical Industry and Engineering, all rights reserved.
Tianjin University 50A305, No.135 Yaguan Road, Haihe Education Park, Tianjin 300350, China
Tel: 86-22-27406054; E-mail:
hgbjb@tju.edu.cn
Support by
Beijing Magtech Co.Ltd
, E-mail:
support@magtech.com.cn
