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Current Issue
2000 Vol.17 Issue.1,
Published 2000-01-15
Article
Article
1
A Study on The Charge of Batch Distillation
LI Ru jun,PAN Yu jun,YANG Zhi cai
The semi implicit Runge Kutta method is resorted to solve multicomponent batch distillation with constant mole liquid holdup.This new method has such advantages as simplity,high stability and accuracy,automatically changing the step of the integration,etc.The optimal feed of binary batch distillation is studied using the SIRK method.The interrelation between optimal feed and other variables is considered.
2000 Vol. 17 (1): 1-7 [
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The Moving bed Flow of Solid with Wide range Particle in Standpipe
CHENG Zhong hu,ZHANG Jian min,ZHANG Hai shen,WANG Yang
The ability of seal gas of solids with wide rang particle is measured in standpipe of φ 70 mm × 4 800mm. On the basis of Ergun equation modified by Yoon and Kunii,the moving bed flow of solids with wide range particle in standpipe is calculated.The calculating results are consistent with experiment results.It indicates that Ergun equation modified by Yoon and Kunii can be used to calculate the moving bed flow of solids with wied range particle in standpipe.And we found that Ergun equation modified by Yoon and Kunii can be used to calculate the ability of seal gas of solids with wide rang particle if only the segregation velocities(included initial and complete) are known.
2000 Vol. 17 (1): 8-14 [
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15
Studies of Heat Transfer Enhancement and Fouling Prevention in a Vapor Liquid Solid Three Phase Circulating Fluidized Bed Evaporator
CHEN Jian sheng,LI Xiu lun,ZHANG Shao feng,LIN Rui tai
Heat transfer enhancement and fouling prevention have been studied in a vapor liquid solid three phase circulating fluidized bed evaporator.The experimental results show that it has the abilities of enhancing heat transfer,preventing and cleaning fouling.Under the same conditions,its heat transfer coefficient is 1 5～2 0 times greater than two phase flow boiling heat transfer.The heat transfer enhancement and fouling prevention mechanisms were also studied in this paper.
2000 Vol. 17 (1): 15-18 [
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19
Synthesis of La_(0.8)Sr_(0.2)CoO_3 and Its Electrocatalysis for Oxygen Evolution
WANG Peng,YAO Li guang,WANMG Ming xian,WU Wei tao
La 0 8 Sr 0 2 CoO 3 complex oxide has been synthesized at moderate temperature by organic acid aided method.XRD result shows that La 0 8 Sr 0 2 CoO 3 synthesized by this method has perovskite structure of single phase.It was revealed from steady state polarization that the Tafel slope of oxygen evolution on La 0 8 Sr 0 2 CoO 3 was 65mV/dec and the reaction order with respect to OH was unity.The rate equation for oxygen evolution in alkaline solution was formulated after analyzed the mechanism.Galvanostatic measurements reveal the La 0 8 Sr 0 2 CoO 3/Ni electrode prepared by this method has high electrocatalytic activity for oxygen evolution in alkaline solution.
2000 Vol. 17 (1): 19-22 [
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2424
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23
Study on Synthesis and Properties of P(MA-BA)/P(BA-St) Composite Polymer Latex
PU Min li,LI Jing qing
In this article the synthesis and properties of P(MA BA)/P(BA St)composite polymer latex were studied.The effects of some factors on the polymerization and properties of the latex and films were discussed.
2000 Vol. 17 (1): 23-27 [
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1524
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28
A Novel Pervaporation Composite Membrane and Its Alcohol perselective Properties
YANG Xiao ying 1,JIN Man rong 1,WU yin 2
The polyacrylic acid has been prepared by solution polymerization.The polyacrylic acid/polysulfone amide(PAA/PSA)composite membrane is made with the crosslinking reaction of the polyacrylic acid and the cross linker,epoxy.The membrane can be used for concentrating ethanol from dilute ethanol water mixture through pervaporation process owing to its alcohol permselective properties.
2000 Vol. 17 (1): 28-32 [
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1862
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33
The Study on the Treatment of Wastewater Containing High concentration Phenol by Chemical Extraction
ZHANG Gan,ZHANG Feng bao,ZHANG Guo liang
Trioctylamine is used to treat wastewater containing high concentration phenol,and a good result is obtained.Effect of oil water ratio,pH,stirring speed and stirring period on the extraction efficiency has been studied,and a preferred operating condition has been provided.It is confirmed that trioctylamine is a good phenol remover.
2000 Vol. 17 (1): 33-36 [
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A Study Manufacturing Technology of Activated Zinc Oxide from the Lead Zinc Oxide Mineral
WANG Guo jun
The manufacturing technology of activated zinc oxide,leaching out from lead zinc oxide mineral by the sulfuric acid,purifying of leaching liquor,synthesizing basic zinc carbonate,drying and calcining was studied,Using this technology,improving of recovery of zinc and separating of lead and zinc were indicated.
2000 Vol. 17 (1): 37-42 [
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43
Appliance of Starch in Foamed Plastic Products
LIU Feng,YU Jiu gao
This article reviewed the study of appliance of starch in foamed plastic products basing on many recent documents.Foamed plastics are widely used owing to their excellent properties.However,the accompanying pollution is also troublesome.Starch has abundant resources,low price and natural biodegradability.It can become foamed products by being filled into common foam system,taking part in the synthesis reaction of foam matrix and foaming predominately by its own.The introduce of starch not only makes products environmentally friendly,lowers their price,but also brings some new properties.
2000 Vol. 17 (1): 43-48 [
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The Control Technology of White Pollution
YANG Wen ling,LI Hai xia,MA Pei sheng
This paper reviewed two important kinds of technology of present “white pollution” control,as well as the harmfulness and seriousness of “white pollution”. The current tendency of the reclaiming technology of waste plastics and the development of degradable plastics were mainly discussed here. Moreover,the paper also proposed that we should take actions simultaneously from policy and technology to control “white pollution” thoroughly.
2000 Vol. 17 (1): 49-55 [
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2000 Vol. 17 (1): 56-62 [
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2000 Vol. 17 (1): 63-63 [
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2000 Vol. 17 (1): 63-63 [
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2000 Vol. 17 (1): 64-64 [
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2000 Vol. 17 (1): 64-64 [
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