Chemical Industry and Engineering Progress

Review of polyethylene glycol for energy storage

FANG Yutang，KANG Huiying，ZHANG Zhengguo，GAO Xuenong

2007, 26(8): 1063.

Abstract ( 2237 )

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Polyethylene glycol (PEG) is a kind of phase change materials with high enthalpy and low thermal hysteresis. This article summarizes the development of PEG as a phase change material, and elaborates its preparation methods, application and prospect.

Progress of studies on gas-liquid two-phase flow in microchannels

MA Youguang，FU Taotao，ZHU Chunying

2007, 26(8): 1068.

Abstract ( 1736 )

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The gas-liquid two-phase flow behavior and mass transfer characteristics in microchannels are reviewed. The flow patterns in microchannels could be divided into bubbly flow，slug flow，annular flow and slug-annular flow，but no stratified flow，and the mass transfer efficiency increases by 2-3 orders of magnitude over that in conventional-sized devices. The formation，growth and coalescence of bubbles and their effect on gas-liquid two-phase flow in microchannels are also discussed. The progress of numerical simulation of gas-liquid two-phase flow in microchannels are introduced briefly. The research and application prospects of gas-liquid two-phase flow in microchannels are predicted from the aspects of experiment，theory and numerical simulation.

Research progress of polymeric material of gas separation membrane for gas pair CO₂/CH₄

TENG Yiwan，WU Fawen ，WANG Hui，LI Lei，ZHANG Zhibing

2007, 26(8): 1075.

Abstract ( 1912 )

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The method of gas membrane separation is an important technology in the separation of gas pair CO2/CH4.This paper introduces generally the development of the important polymeric materials of gas separation membrane at home and abroad in this field，and recommends specially polyimide (PI) and facilitated transport membranes. Moreover some meaningful improvement of membrane materials is proposed to produce membranes with better performance.

Applications of quartz crystal microbalance in supercritical carbon dioxide processes

MA Shaoling，LU Zhaowen，WU Youting，ZHANG Zhibing

2007, 26(8): 1080.

Abstract ( 1725 )

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Supercritical fluid (SCF) technology is an important field of green chemistry. Due to the restriction of high pressure，most traditional detection methods are not applicable to obtaining the data of physical and chemical properties，which greatly affects the research and applications of SCF. Quartz crystal microbalance (QCM) is a new sub-micro weighing technique that can work under extreme conditions，such as high temperature，high pressure with good precision. Therefore it can be conveniently used for the detection of SCF processes. Combining with the research work in our laboratory，the paper introduces the fundamental theory and characteristics of QCM，and especially reviews and predicts the applications of QCM in supercritical carbon dioxide (ScCO2) .

Research progress of nanoarrays prepared by silicon-based AAO template method

YAO Suwei，LU Ping，ZHANG Weiguo

2007, 26(8): 1088.

Abstract ( 1762 )

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Silicon-based nanomaterials can be widely used in optics，semiconductors，and materials science because of their special structures and properties. Anodic aluminum oxide (AAO) template on silicon substrate has its advantages over aluminum substrate on nanofunctional devices integration. In this paper，the preparation and oxidization process of the silicon-based AAO template are analyzed，and several kinds of nanoarrays growing on silicon-based AAO template are reviewed. Finally，the performance of some silicon-based nanostrctural arrays is summarized.

Progress of composed of polyelectrolyte complex biomicrocapsule

CHEN Guo，YAO Shanjing，FANG Baishan

2007, 26(8): 1093.

Abstract ( 1788 )

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Polyelectrolyte complex biomicrocapsule was formed by the reaction between polyanion and polycation. Due to the moderate reaction and good biocompatibility，it has become an focused research field especially in artificial organ，medical diagnosis and cell immobilization. In this paper，the recent progress in preparation，characteristics and application of PEC biomicrocapsule is reviewed，and the prospect of future development in this field is presented.

Energy saving research progress of low-temperature open display case

ZENG Xiangcai，LI Xuebo，WANG Nan，ZHU Dongsheng

2007, 26(8): 1100.

Abstract ( 1551 )

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The research progress of low temperature open display case and the situation of energy consumption in China and other countries were reviewed. Some energy saving optimization designs about low temperature open display case were present. The heat burden of display case was analyzed，air-curtain optimization technique and evaporator optimization technique of display case were put forward by considering structure design and refrigeration system，and the influence of defrosting fashion，compression condensation unit and super-cooling of refrigerant on the energy consumption of display case were investigated.

Development of the removal of indoor formaldehyde with catalytic oxidation

HE Yunbing，JI Hongbing，WANG Lefu

2007, 26(8): 1104.

Abstract ( 1796 )

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The latest development in the treatment of indoor formaldehyde pollution with oxidation technique is summarized. Firstly，catalytic oxidation is proposed to remove formaldehyde on the basis of the shortcomings in the existing methods commonly used in the removal of formaldehyde. Then the principle and effect of the present photocatalytic apparatus and the modification of photocatalysts are introduced. In addition，the research on the removal of indoor formaldehyde with heterogeneous catalytic oxidation is presented in detail. Finally，some methods combining catalytic oxidation and other methods in the removal of indoor formaldehyde are introduced as well. After the analysis of indoor formaldehyde removal，and from the view point of efficiency and energy consumption，it is concluded that low temperature catalytic oxidation is one of the available and most effective techniques in the removal of indoor formaldehyde.

Studies on low- temperature oxidation of CO by Au catalyst

LIU Dongliang，LIU Daosheng，ZHANG Xiaotong，SUN Zhaolin，GUI Jianzhou，SONG Lijuan

2007, 26(8): 1110.

Abstract ( 1646 )

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The progress of research on CO low- temperature catalytic oxidation by Au catalyst is reviewed，and the effects of preparation method，the size of Au particle，support and preparation condition on the activity of Au catalytst are analyzed. The mechanism of catalytic oxidation is discussed. In general，the appropriate synthesis methods would be effective in controlling the catalyst particle diameter，and dispersing the catalyst on the carrier to achieve better catalytic activity. The appropriate calcination temperature and the appropriate type of carrier are also necessary for highly active catalyst.

Pilot plant test of polypropylene fiber co-irradiation grafting styrene-divinylbenzene by radiation

CHEN Tao，ZENG Qingxuan，FENG Changgen

2007, 26(8): 1116.

Abstract ( 1733 )

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The grafting copolymerization of styrene-divinylbenzene onto polypropylene fiber by 60Coγ-rays was carried out and several influence factors were studied. With the increase of the amount of materials in the test，the dose rate of radiation should be diminished to assure that the graft polymerization reaction could be carried out smoothly and uniformly. When dose rate was 0.8 kGy·h－1 and reaction time was 7 h，the intake yield of products was 280%～293% and the products had good mechanical property. Methanol as solvent can be reused. Strong acidic ion-exchange fiber was prepared by sulfonating the grafted copolymer with sulfuric acid and its exchange capacity was 3.7～4.2 mmol·g^－1.

Synthesis of glycerol triacetate using acidic functional ionic liquid as catalyst

LI Hongjuan，YU Shitao，LIU Fusheng，LI Hongliang，XIE Congxia

2007, 26(8): 1120.

Abstract ( 1881 )

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[HSO3-pmim]Cl，[HSO3-pmim][BF4]，[Hpyro][HSO4]and[HSO3-pmim][PTSA] ionic liquids were synthesized and the their structures were characterized by 1H-NMR and FT-IR. Glycerol triacetate was synthesized by using these acidic functional ionic liquids as catalyst，and an ionic liquid [HSO3-pmim][PTSA] with better catalytic performance was selected and could be repeatedly used. The influences of the amount of catalyst，raw material proportion，reaction time and reaction temperature on the reaction were investigated. The optimum conditions were obtained as follows：n(glycerol)︰n(acetic acid)=1︰8，catalyst amount 10.5% the total weight of glycerol and acetic acid，reaction time 6 h and reaction temperature 120 ℃. Repeated use of the ionic liquid was investigated. Under the optimum conditions，when the catalyst was repeatedly used for 7 times，the yield of glycerol triacetate still reached 90%.

Preparing nicotinic acid by ozonolysis-decarboxylation of quinoline

HUANG Chengkun，ZHOU Congxiao，LI Tao，WUMANJIANG Eli

2007, 26(8): 1125.

Abstract ( 2200 )

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Nicotinic acid is an important intermediate for pharmaceuticals and fine chemicals，and it is estimated that the domestic demand will exceed 5000 tons by 2010. In this paper，nicotinic acid was prepared by subliming amd decarboxylation of pyridine-2，3-dicarboxylic acid (quinolinic acid) which was obtained from the ozonolysis of quinoline in a solvent containing glacial acetic acid，acetic ether and water under mild reaction. Through the experiment，the influences of concentrated sulfuric acid and solvents on the yield of nicotinic acid were investigated. The optimum molar ratio of n(concentrated sulfuric acid)︰n(quinoline)=（1.1～1.5）︰1；V(glacial acetic acid)︰V(acetic ether) = 3︰1. Under the above conditions the yield of pyridine-2,3-dicarboxylic acid was up to 66%. Nicotinic acid was obtained by decarboxylation of pyridine-2,3-dicarboxylic acid with a yield of more than 96% and the melt point was 235～237.3℃. The relative mass fraction was no less than 95% detected by HPLC.

Synthesis of dialkybenze sulfonate and research on its interfacial tension

ZHANG Liming，SUN Desi，ZHANG Qiang

2007, 26(8): 1129.

Abstract ( 2057 )

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Dialkybenzene sulfonates were prepared as follows. First，dialkybenzenes were prepared from alkybenzene and α-olefin with MCM-22 as catalyst. Second，dialkybenzene sulfonic acid was prepared from dialkybenzenes and chlorosulfonic acid. Then，dialkybenzene sulfonic acid was neutralized with NaOH to obtain dialkybenzene sulfonates. The optimum molar ratio of reactants (alkybenzene∶α-olefin = 4∶1) and sulfonation conditions (30℃，60min) were obtained. The performance of dialkybenzene sulfonates C12-6，C12-10，C12-14 were investigated，and their foaming properties，emulsification，wettability，critical micelle concentration，interfacial tensions were analyzed.

Microstructure of Zr₆₅Al_7.5Ni₁₀Cu_17.5 composite coatings produced from amorphous and nano-crystal by laser cladding

LI Gang，ZHANG Weiqiang，HAO Shengzhi

2007, 26(8): 1132.

Abstract ( 2042 )

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Zr₆₅Al_7.5Ni₁₀Cu_17.5 composite coatings on Ti substrate were produced by laser cladding. The microstructure of the coating was investigated by means of SEM，TEM and XRD. The results showed that the coatings mainly consisted of intermetallic phases，amorphous phase and nanocrystalline phase，of which the intermetallic phases were Al2Zr3，CuZr2 and Zr2Ni，and the nanocrystalline phase was Al2Zr3 with P42 structure，whose cell parameters were a=b=7.618 nm，c=6.985 nm. The coating could be divided into three layers according to the difference of microstructure morphology，viz，dendrite zone on the surface，fine crystalline zone in the middle，and bonding zone.

Synthesis of biodegradable aqueous polyurethane based on aliphatic polyester diol

XIANG Shanglin，FANG Xianli，CHEN Xianyi，YANG Fang

2007, 26(8): 1136.

Abstract ( 1751 )

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Biodegradable aqueous polyurethane was made from self-made polyester diol. With varied proportions of lactic acid/adipic acid in the structure of polyester diol, the effects on the size of particle, hydrophilicity, biodegradability of polyurethane emulsion were studied. As the proportion of lactic acid increased, the particle size of the emulsion had a minimum. When the content of lactic acid was 25%, the hydrophilicity of the film made by polyurethane emulsion was the best; and as the content of lactic acid increased, the biodegradability of the aqueous polyurethane tended to increase.

Effect of blending lignin with polyethylene and EVA on composite properties

LI Xianfa，LUO Xuegang

2007, 26(8): 1139.

Abstract ( 2199 )

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A series of blended films with lignin as a filler blended with low-density polyethylene (LDPE) and ethylene vinyl acetate copolymer (EVA) respectively were prepared by extruding，pellet fabrication，and melt blow molding. The influence of lignin blending on morphology，mechanical properties，thermal analysis，differential scanning calorimetry and FT-IR were investigated for both polymer blends types. Thermal analysis showed that EVA/lignin composite was more thermally stable than LDPE/lignin composite. FTIR（fourier transform infrared）indicated the existence of intermolecular interaction between lignin and EVA. According to SEM（scanning electron microscopy）analysis very effective lignin dispersion and compatibility was achieved within EVA，which was better than within LDPE. When the content of lignin was less than about 30 wt%，the mechanical properties of LDPE/lignin and EVA/lignin were acceptable.

Preparation and characterization of porous carbons via sol-gel method

LIU Zhaoyong，ZHENG Jingtang，WANG Yanfei，ZHAO Yucui

2007, 26(8): 1145.

Abstract ( 2067 )

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Porous carbons were prepared by using the sol-gel method with cetyl trimethyl ammonium bromide (CTAB) stabilized commercial silica sol as the silica template and sucrose as carbon precursor. N2 adsorption isotherms and XRD were used to characterize the pore structure of the as-prepared porous carbon. The resulting carbon materials revealed a more narrow pore size distribution than carbon materials produced through commercial silica sol without surfactant stabilization，but due to low temperature carbonization，the resulting carbon material retained amorphous carbon structure.

Enrichment of total flavonoids in propolis by resins

ZHENG Jie，LIAN Hui，PENG Qijun

2007, 26(8): 1148.

Abstract ( 1743 )

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The adsorption and desorption rates of flavonoids in propolis by seven macroporous resins and polyamide were investigated，and it was found that AB-8 resin exhibited high adsorption and desorption capability which was suitable for enrichment of flavonoids. The factors (adsorption time and temperature，desorption temperature，ethanol eluent concentration，eluent volume) which influenced the enrichment of flavonoids in propolis were also studied，and a process to enrich total flavonoids in propolis was obtained. Adsorption at 35℃ water bath for 5h，when using 7BV 75% ethanol as eluent，desorption rate would reach up to 90%，and the total flavonoids purity of propolis extracts reached 30%.

Simultaneous conversion and separation of γ -decalactone prepared by biological pathway

YU Wei，XU Yan，YU Xiaowei，MU Xiaoqing

2007, 26(8): 1151.

Abstract ( 1538 )

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The product in the production of γ-decalactone by biological pathway has obvious toxicity to the growth of Yarrowia lypolitica.Resin AB-8 was added to adsorb converted product to reduce the toxicity on Yarrowia lypolitica.The optimum conditions were castor oil 25g/L，7.5% AB-8，pH 7.5. The maximal specific γ -decalactone formation rate increased by 36% and decreased slowly after it reached a maximum，leading to better product accumulation. The total product concentration reached 2.17g/L after 56h. As a result，addition of resin not only increased the production but also separated the product.

Surface characteristics of PLA film modified by ammonia plasma

TIAN Ye，YANG Julin，YANG Yuan，ZHOU Changren

2007, 26(8): 1155.

Abstract ( 1644 )

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Ammonia low-temperature plasma was used to modify Poly (D，L-lactide) (PLA) film and the surface characteristics after modification were studied. The results showed that plasma treatment would etch film surface，which would affect the roughness of film surface and the density of grafted ammonia group. The hydrophilicity of the modified film was increased. Its contact angle was decreased obviously from 90° to 24° and could keep stable when it was preserved at a low temperature (－20℃). The cell affinity of PLA was improved by plasma treatment.

Preparation of zinc oxalate fine particles by using an emulsion liquid membrane system

ZHENG Xin，HE Gaohong，LI Xiangcun，LIU Hongjing

2007, 26(8): 1159.

Abstract ( 1690 )

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The zinc oxalate fine particles were prepared by using an emulsion liquid membrane (ELM) system with kerosene as solvent，P204 as extractant (cation carrier)，and T155 as surfactant. Zinc ions were extracted from the external phase and stripped into the internal phase to form zinc oxalate particles. The reaction reached equilibrium after 40min and the extraction ratio of zinc ions was 90%. The effects of reaction conditions on the size of particles were investigated. In the range of experiments，the size of particles decreased with increasing surfactant concentration and O/A ratio. The decrease of zinc ions concentration could effectively reduce particle size. Instrumental analysis，such as scanning electron microscopy (SEM)，x-ray diffraction (XRD) and thermogravimeter (TG)，confirmed that zinc oxalate particles were synthesized. The zinc oxide particles were obtained by calcining zinc oxalate particles at 500℃ for two hours.

Degradation of RhB by electro-Fenton reaction using a nanoscale Fe/CNTs composites cathode

MEI Tao，LIU Juan，LI Jinpo，ZHANG Lizhi，AI Zhihui

2007, 26(8): 1166.

Abstract ( 1765 )

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In this study，a nanoscale iron/carbon nanotube (CNT) composite cathode was synthesized and evaluated by X-ray diffraction (XRD)，scanning electron microscopy (SEM)，and engery dispersive X-ray spectroscopy (EDX) respectively. It was found that 92.1% degradation of 5 mg/L Rhodamin B (RhB) was achieved in the presence of 1.2V potential and air (0.1m3/h) based on the eletro-Fenton reaction using a nanoscale Fe/CNTs composite cathode at a neutral pH. The results indicated that both H2O2 and iron ions could be effectively generated by electrochemical reduction from Fe/CNTs cathode and RhB could be rapidly eliminated.

Study on fluoride removal performance of silica/activated alumina and ailica /activated magnesia

CUI Weihua，DONG Bangzhen，LIU Fei

2007, 26(8): 1170.

Abstract ( 1747 )

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Using silica as carrier, activated alumina and activated magnesia as sorbent, two kinds of fluoride-removal materials were prepared. Orthogonal design was used to develop the best preparation steps. The fluoride removal capacity of silica/activated alumina and silica /activated magnesia was measured. Under the same conditions, the fluoride removal capacity of activated zeolite was 0.98 mg/g reported by prior researchers, but the fluoride-removal capacities of these two kinds of fluoride-removal materials were 1.00 and 1.72 mg/g respectively. The resistance to interference by SO42－，Cl－，Ca2+ and Mg2+ were tested. The new fluoride removal materials had high resistance to interference by ions and high fluoride removal capacity.

Study of using DWC to separate three components mixture

QIAN Chunjian，YE Qing，ZHU Guobiao，QIU Zhaorong

2007, 26(8): 1174.

Abstract ( 1625 )

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A laboratory scale dividing wall column (DWC) was built for separating a mixture consisting of ethanol/n-butanol/hexanol in order to study the characteristics of the DWC. The influences of feed volume ratio，feed flow rate，reflux ratio and distribution ratio on separation result were investigated. Through calculation，the energy consumption of separating the above mixture was compared between DWC and conventional two distillation column process. When the volume ratio of n-butanol in the feed was 60% and the content of ethanol was equal to hexanol，feed flow rate was 1.8 mL/min，distribution ratio was 1∶2，reflux ratio was 5∶1，the result was the best，the mass fraction of ethanol could reach more than 96% in the overhead product，the mass fraction of n-butyl alcohol could reach more than 98% in the side-draw product，and the bottom of column had no ethanol. Compared with the conventional two distillation column process，DWC required less energy，the energy consumption of condenser and reboiler could be reduced by more than 27.2% and 23.9% respectively.

Study of using DWC to separate three components mixture

QIAN Chunjian，YE Qing，ZHU Guobiao，QIU Zhaorong

2007, 26(8): 1174.

Abstract ( 940 )

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A laboratory scale dividing wall column (DWC) was built for separating a mixture consisting of ethanol/n-butanol/hexanol in order to study the characteristics of the DWC. The influences of feed volume ratio，feed flow rate，reflux ratio and distribution ratio on separation result were investigated. Through calculation，the energy consumption of separating the above mixture was compared between DWC and conventional two distillation column process. When the volume ratio of n-butanol in the feed was 60% and the content of ethanol was equal to hexanol，feed flow rate was 1.8 mL/min，distribution ratio was 1∶2，reflux ratio was 5∶1，the result was the best，the mass fraction of ethanol could reach more than 96% in the overhead product，the mass fraction of n-butyl alcohol could reach more than 98% in the side-draw product，and the bottom of column had no ethanol. Compared with the conventional two distillation column process，DWC required less energy，the energy consumption of condenser and reboiler could be reduced by more than 27.2% and 23.9% respectively.

Photocatalysis technology for reactive-purple dye waste water treatment

XU Xiaofan，YANG Xuewen，ZHANG Chunqing，WANG Jing

2007, 26(8): 1178.

Abstract ( 1635 )

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In the experiment of photocatalysis treatment for reactive-purple dye waste water，the index of decolorization rate of solid-phase was first used to replace the conventional decolorization rate of liquid-phase，and the optimum operation conditions of decolorization were as follows. TiO2 content 1g/L，waste water initial concentration 60 mg/L，air input 0.8 m3/h，lamp power 105 W. In experimental analysis of organic substance degradation，a new explanation about organic substance degradation was given by using several indices in combination.

Application of freeze-dephlegmation to bromamine acid aqueous solution purification

FEI Xuening，DU Guoyin，WANG Jinfang，LIU Xiaoping，HAN Wenfeng

2007, 26(8): 1182.

Abstract ( 1598 )

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Aqueous bromamine acid (sodium 1-amino-4-bromine-anthraquinone-2-sulfonate) solution was selected as the sample in this study. The change of the solute and solvent in the freezing field was investigated. The results indicated that the ice sample was obviously divided into four layers as micro-pollution layer，cleaned layer，mixed layer and precipitate layer after aqueous bromamine acid solution was completely frozen. The water quality of the cleaned layer was almost unaffected by coolant temperature in the range of －5℃ to －30℃. The removal rate of chemical oxygen demand (CODCr)，total organic carbon (TOC) and chroma were all above 97%. As the coolant temperatures fell from －5℃ to－30℃，the volume of the cleaned layer decreased from 64.7% of the total volume to 35.3%. The water quality of the cleaned layer was also almost unaffected by bromamine acid concentration in the range of 50 mg/L to 1000 mg/L. The volume of the cleaned layer decreased from 49.4% of the total volume to 29.4%，and the CODCr and TOC were 25 mg/L and 2 mg/L respectively at －25℃.

Life cycle cost analysis and its application

HUANG Zhixian，QIAN Yu

2007, 26(8): 1186.

Abstract ( 1612 )

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Life cycle cost analysis (LCCA)，according to life cycle thinking，is a systematic methodology，which assesses the environmental and economic performance of products through estimating the monetary value of environmental impact in their whole life cycle and checking their internal cost. Base on the model of life cycle cost，two indices of product greenness factor and greenness ratio were presented，which provided measurable indices for selecting alternatives or comparing the performance of different products. In this paper，LCCA was used to systematically analyze the economic and environmental performance of acetylene produced from natural gas. The results showed that LCCA could identify the main elements which affected the holistic performance of the process，and select the best process from alternatives.

Effect on performance of ethylbenzene dehydronation catalyst by cerium salt

XIN Guoping

2007, 26(8): 1192.

Abstract ( 2138 )

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The influence of the precursor of cerium oxide (cerium sulphate, cerium oxalate and cerium nitrate) on the performance of ethylbenzene dehydrogenation catalyst was investigated. The results showed that the activity and selectivity became lower than normal when cerium sulfate was added in, but became much better when cerium oxalate or cerium nitrate was added in, especially when these two were used together at a ratio of 70/30. The conversion of ethylbenzene reached above 79%, and the selectivity of styrene reached above 95%. At the same time, the performance of the catalyst was good after the 1000h lifetime test.

Sulfur removal of exhaust gas of zinc smelting by alkaline residue

PENG Weixiong，LIU Yuejin，TANG Ruihu

2007, 26(8): 1195.

Abstract ( 1773 )

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The exhaust gas of zinc smelting was absorbed by alkaline residue—a Na2CO3·10H2O containing by product in producing hydrazine hydrate. Sodium Sulfite was obtained. The influences of SO3 content in the exhaust gas of zinc smelting, the specific gravity of liquid alkali and the pH value of neutralization liquid on sulfur removal process, sulfur removal efficiency and product quality were investigated.

A new numerical simulation method for rod-baffle heat exchanger

GUO Chongzhi，LIANG Quanshui

2007, 26(8): 1198.

Abstract ( 1633 )

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To achieve the overall numerical simulation of heat exchanger performance, a new method named “simulation in subsections, integration of the whole” for numerical simulation of shell & tube heat exchanger was proposed. The core idea was, based on the qualitative analysis of the flow passage and the performance of hydrodynamics and heat transfer of heat exchanger, dividing the inner flow passage into subsections, and then the whole 3D geometrical and meshed submodels of typical subsection flow passage were set up. By establishing the continuity conditions between submodels, the meshed submodel was simulated continuously，and the solved local data weres combined into the whole result.

Preparation of rice hull adsorbent and its application to treatment of polyacrylamide

SHAO Qiang，YAN Guangxu，GUO Shaohui

2007, 26(8): 1201.

Abstract ( 2118 )

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Active carbon was prepared from rice hull，which was treated with concentrated sulfuric acid. And through the adsorption of hydrolyzed polyacrylamide (HPAM) waste water，the preparation of active carbon with the optimal adsorption capacity was studied. The optimum condition in the treatment of HPAM waste water with active carbon was obtained through a series of experiments.The adsorption kinetics was studied，and the adsorption isotherm was determined. The result indicated that the preparation of active carbon by concentrated sulfuric treatment of rice hull was simple and the as-prepared active carbon was effective in removing HPAM，so it had a good prospective in the treatment of polymer-containing waste water.