Due to their unique structure and performance，bis（fluoro-based sulfonyl）imides and their salts have attracted increasing interests in the fields of lithium-based rechargeable batteries，ionic liquids，and catalysts，et al. In this paper，preparation methods of these compounds are reviewed，and their advantages and disadvantages are compared. The reason of some alkali metal salts combined with hydration water is analyzed from their molecular structures，and preparation methods of anhydrous alkali-metal salts are also summarized. Their performance is introduced when they are used as electrolytes of lithium-based rechargeable batteries. At last，their application progress is presented，and the research emphases and development trend are discussed.

The recent progress in the calculation of copolymer physical properties and the phase equilibrium of copolymer-solvent system are introduced．The phase equilibrium of several copolymer systems is calculated by PC-SAFT state equation，and its result is compared with corresponding experimental data．Results show that the PC-SAFT state equation can describe the phase behavior of copolymer-solvent system well．Besides，copolymers comprising both non-polar and polar repeat units require an interaction parameter to incorporate the interactions between different types of repeat units．

Adsorption model has been a hot research topic in adsorption science and attracts great attention in recent years. In this paper，the progress of single component and multi-component gas adsorption model are reviewed based on the adsorption of gas on the solid surface. The gas-solid adsorption models of single component in the sub-critical and supercritical conditions are described. Then the latest advance of the classical adsorption models in sub-critical conditions are reviewed. Molecular simulation，adsorption potential theory and lattice theory are particularly addressed. Problems in multi-component gas adsorption are analyzed. The trend of gas-solid adsorption model development is also discussed.

Supercritical anti-solvent（SAS）technology is a novel technique for the preparation of micro- and nano-particles，and has been largely applied in pharmaceuticals，superconductors，coloring matters，explosives and polymers. The supercritical anti-solvent process and its application in the preparation of single and multi-composition inorganic oxide nanoparticles were reviewed. The particle formation mechanism in the SAS process was summarized. The future development of the SAS technology was also proposed.

1,3-Propanediol is a chemical intermediate with a wide range of applications. The synthesis of new polyester PTT is a major one among them. Separation and recovery of 1,3-propanediol from a fermentation broth is one of technological keys and difficult problems in biological production of 1,3 - propanediol. In this paper，the state of art for the downstream processing and purification of biologically produced 1,3-propanediol is outlined and compared in detail. The separation methods discussed include evaporation and distillation，solvent extraction，reactive extraction，molecular sieve adsorption and the cationic exchange resin chromatography. The outlook on the industrial biological production of 1,3-propanediol is also prospected.

In order to make up the drawback of small gap modeling and analysis in current shell & tube heat exchanger numerical simulation on fluid flow and heat transfer，the full fluid flow and heat transfer mode，which contains the main flow stream of B，C and small leakage flow stream of A and E，is developed by the simulation method of “segmented modeling and comprehensive synthesis” that successfully incorporate the small leakage flow stream of A and E paths. The full fluid flow and heat transfer mode are consistent with the actual heat exchanger. The fluid flow and heat transfer is studied in the segmentation model by using CFD software；and the influence of these flow passages in the baffle space on the fluid flow and heat transfer are also discussed. Data of local flow and heat transfer from numerical simulation are further processed comprehensively to get the integrated correlation performance of heat transfer and pressure drop in heat exchanger. The numerical results are compared with several famous formulas，such as method of Donohue，Kern，Bell-Delaware and Flow Stream Analysis. It is shown that the simulation results are well agreed with Bell-Delaware and Flow Stream Analysis Method，the maximum deviation is less than 20%.

Diesel emulsions were prepared by a coiled hollow fiber ultrafiltration membrane module. The effects of coiled pitch and coiled diameter on emulsion properties together with the membrane flux were investigated. It was found that the emulsion droplet size is reduced，and membrane flux is enhanced by decreasing both coiled pitch and coiled diameter. However，the emulsion cannot remain stable when coiled diameter becomes too small. Compared to a straight module，the use of coiled module can enhance diesel emulsion properties，reduce emulsion agent dosage and effectively restrain the membrane pollutant formation due to Dean vortex.

The iron-based active component，Fe₂O₃，was prepared by co-precipitation method. Fe₃O₄ and Fe，were also prepared by reducing Fe₂O₃ at different temperature for different time. The adsorption behavior of them was investigated in COS/N₂ and H₂/COS/N₂ gas streams using the fixed bed reactor at 400 ℃，450 ℃ and 500 ℃，respectively. The results show that all three active components can adsorb COS and their adsorption ability varies with temperature. At 500 ℃，the sulfur capacity of Fe₃O₄ is the highest，and that of Fe is the lowest. While at the temperatures of 450 ℃ and 400 ℃，the sulfur capacity has the following sequence：Fe₂O₃ > Fe₃O₄ > Fe. In H₂/COS/N₂ gas stream，the reaction of COS hydrogenolysis is enhanced by increasing temperature. The iron sulfides have certain catalysis on COS hydrogenolysis and it has an active influence on inhibition of conversion from H₂S to COS.

Aluminum was successfully electrodeposited on stainless steel electrodes from aluminum chloride（AlCl₃）/triethylamine hydrochloride（Et₃NHCl）ionic liquids by constant current electrolysis under magnetic stirring conditions. The electrical conductivities of ionic liquids increased as the electrolyte temperature increased，agreeing with Arrhenius equation. The viscosities of ionic liquids decreased as the electrolyte temperature increased，with a linear relationship of lnμ and T^－1. The constant current deposition experiments showed that when the stirring speed was lower than 700 r/min，current efficiency and deposition rate increased as the speed increased，the surface morphology of the deposits became more smooth and denser，with fine particle sizes and uniform distribution. In addition，the electrodeposits obtained on stainless steel electrodes were dense，continuous，and well adherent，and the current efficiency was 78% at a current density of 22 mA/cm² for 90 min electrolysis at 70 ℃ under stirring speed of 700 r/min. The purity of aluminum electrodeposits on stainless steel electrodes was about 97%（w/w）.

Seven types of macroporous resin were selected to compare their performances in adsorbing and desorbing bamboo flavonoids. AB-8 macroporous resin showed high selectivity and good desorption property. Static sorption experiments were carried out to study the adsorption equilibrium and kinetics of bamboo flavonoids on AB-8 macroporous resin at different temperatures. The results indicated that Freundlich equation was  the best for the description of the adsorption equilibrium of bamboo flavonoids on AB-8 resin，the negative value of ΔG and the positive value of ?S showed that the adsorption was a spontaneous process of increased entropy，and the increase of temperature would benefit the adsorption process. The adsorption heat ?H was 13.45 kJ/mol within the range of hydrogen bond energy；and the FT-IR spectra of AB-8 resins before and after bamboo flavonoids adsorption further suggested that the adsorption of bamboo flavonoids on AB-8 resin was a type of physical adsorption with hydrogen bond. The kinetics results revealed the adsorption followed a pseudo-second-order reaction，and the adsorption rate was mainly decided by the film diffusion.

The solute concentration is one of the key factors in chemical process study．The difficulty in obtaining highly accurate concentration measurements is a significant limitation to the development of reliable techniques for the modeling，monitoring，and optimizing of chemical process．In this work，attenuated total reflection Fourier Transform Infrared Spectroscopy（ATR-FTIR）is coupled with partial least square（PLS）to provide a solute concentration calibration model，in which the IR absorbances constitute the prediction variables of PLS and the concentration is  the prediction outputs．The a model is tested by a multicomponent system，the esterification of ethylparaban．Results show that the model can give reliable on-line solute concentration measurements with enough accuracy for online monitoring．

A cold pilot model experiment was conducted with 4 kinds of S-type metal corrugated packings. In this paper，the hydrodynamic and mass transfer performance of S type packing is analyzed，and its performance is compared with that of the traditional metal corrugated packing. Results show that its pressure drop is very small. Compared to CY800，the dry pressure drop of S800 is reduced by 40.02%，when F =1.2 (m/s)·(kg/m³)^0.5，and the wet pressure drop of S800 is reduced by 78.18%，when F =1.2 (m/s)·(kg/m³)^0.5，L=25.46 m³/(m²·h). Compared to the CY type packing，S type packing has higher flooding gas velocity，and the flooding gas velocity of S800 is increased by 22.22% or more. The mass transfer efficiency also has been greatly improved. Under the operating conditions，the theoretical stages number of S800 per meter is more than 20，which is increased 12.33% or more than that of CY800. It can be concluded that S type packing has better hydrodynamic and mass transfer performance；can simultaneously obtains high capacity，low pressure drop and high efficiency，shows a good application potential.

The harms of quench water that contains catalyst particles in a chemical device is introduced. Methods of removing micro solid particles from waste water is reviewed. By analysing the characteristics of quench water，various separation methods are compared. An approach with two-stage micro hydrocyclones to separate catalyst from quench water is proposed. Its first stage is for clarification and second stage for concentration. The operation principle and device structures of micro hydrocyclone are expounded. The operating condition of whole separation system is introduced. According to the equipment’s operating characteristic，the separation efficiency has reached 72% in optimal operating condition，which effectively removes the catalyst and makes liquid-solid micro hydrocyclone separation technology in industrialized coal chemical devices successful.

Based on the experience of onshore and offshore acid gas removal process technology at home and abroad，the conventional methods are summarized and compared according to the gas source and the sea conditions of an offshore gas field. MDEA and DEA mixed solvent method is chosen for the floating acid gas removal technology. The model of columns as the main equipments are selected，and the key process parameters are initially determined. With the chemical simulation software HYSYS，the simulation of process is completed，and suitable process indexes are chosen. Effects on the flow of key parameters are analyzed. The recommended ranges of key parameters are given. The research method of acid gas removal technology of floating LNG is built，and it can give some reference for the research of offshore acid gas removal technology.

Microalgae is the fastest growing plant on the earth. As a resource for biodiesel production，microalgae is one of the most competitive options for biofuel industry. In this article，the process of biodiesel produced from oilgae is introduced，consequently，units of process such as screening of algae strain，cultivation system of algae，algae harvesting，extraction of algae oil and conversion of algae oil to biodiesel are elucidated independently. Especially，various microalgae cultivation systems including open pond as open system and photobioreactors as closed system for mass production of algae are discussed in detail. The advantages and disadvantages of different cultivation systems are compared and advances of cultivation systems are summarized. Finally，trends and research areas in microalgae-biodiesel industry are proposed.

The pyrolysis behaviors of wood and its three chemical components（cellulose，hemicellulose and lignin）were investigated in a thermo-gravimetric analyzer（TGA）. Meanwhile，the thermo-gravimetric behavior of liquefied residues under same liquefaction conditions were also studied. Regarding thermal stability，TGA results showed that lignin was the most difficult one to be pyrolyzed，hemicellulose was the easiest one，and cellulose was in the middle. The thermal degradation of wood was considered as the sum of the thermal degradations of each individual chemical component. It was achieved in a step-wise manner，i.e. hemicellulose breaken down first at 236～333 ℃，cellulose next at 332～383 ℃ and lignin at 250～630 ℃. Lignin was the most susceptible wood component to the liquefaction reaction among the three main wood components，then hemicellulose，and cellulose at last. In the liquefaction process，the rapid liquefaction stage was mainly attributed to lignin and hemicellulose，which were easily and firstly liquefied，while the second stage，characterized by the slow decrease of residues，mainly depended upon the progress of cellulose liquefaction.

Selective hydrodesulfurization catalysts and octane recovery catalysts for hydro-upgrading of FCC gasoline were prepared. And the hydro-upgrading process of FCC gasoline was investigated in a 300 mL adiabatic reactor using the full range FCC gasoline or heavy cut as feed materials. The products cannot completely meet the FCC gasoline hydro-upgrading requirements by single octane recovery process or octane recovery-selective hydrodesulfurization combination process. However，single selective hydrodesulfurization process or selective hydrodesulfurization-octane recovery combination process can meet hydro-upgrading requirements for both the full range FCC gasoline and heavy cut. The modified products with lower sulfur or clean gasoline of National Ⅳ standard can be obtained by hydro-upgrading of FCC gasoline heavy cut.

α-Methylacrylic acid high-carbon mixed ester and maleic anhydride high-carbon mixed ester were synthesized from α-methacrylic acid and maleic anhydride respectively. The favorite esterification condition was determined. α-Methylacrylic acid high-carbon mixed ester-maleic anhydride high-carbon mixed ester-vinyl acetate-styrene tetra-polymer was prepared with toluene as a solvent via solution polymerization，the best reaction condition was obtained as：monomer ratio 1∶2∶3∶1，initiator（AIBN）0.8%，reaction temperature 85 ℃，reaction time 6 hrs. Its performance as a diesel pour point depressant is tested in the hydrogenated diesel fuels produced by Jinzhou Petrochemical Company unit No.2，the best addition dosage was 0.07%.

Residue hydroprocessing is a significant residue upgrading technology，and the development of catalysts with high performance is the core content. The latest research progress of activated carbon supported catalysts is introduced，including preparation method，activity and active phase. More attention should be paid to increasing mechanical strength，improving extrusion molding and keeping stability of catalyst in future research and development.

Modified-V₂O₅ catalysts，used in the oxidation of isoeugenol with H₂O_2，were prepared by reducing V₂O₅ with glycerol and then impregnating with phthalic acid or disodium phthalate solution. The obtained catalysts were characterized by FT-IR，diffuse reflectance UV-Vis（DR UV-Vis）and XRD. It was found that the reduction-impregnation method can effectively improve their properties by changing the valence state and crystal structure of V₂O₅. Among them，(PVO)-120 catalyst obtained from the reduction of V₂O₅ with glycerol at 120 ℃ and then impregnating with disodium phthalate presented better performance. The effects of promoters such as N,N-dimethylformamide（DMF），DMF amount and reaction time on the oxidation were investigated. 87.3% conversion of isoeugenol and 78.0% yield of vanillin were achieved under the optimal condition，i.e.（PVO）-120 as catalyst in DMF-CH₃COCH₃（20%，volume ratio）when isoeugenol∶H₂O₂ = 1∶2（mole ratio）after 4 h reaction at 20 ℃.

As a novel anode material for lithium ion battery，Li₄Ti₅O₁₂ has been widely studied for its “zero-strain insertion” effect. Morphologies have a great effect on the material properties. The morphology control of Li₄Ti₅O₁₂ has then become one of the highly energized research fields. In this article，the recent research progress in preparation methods and properties of Li₄Ti₅O₁₂ with different morphologies such as nanoparticals，nanorods，nanofibers，nanotubes，nanosheets，films and porous spheres are reviewed，and the future research directions are also prospected.

The application of chitosan-based surfactants in biomedicine and daily chemicals are progressively increasing for their feature of non-toxic and biodegradable. The micelles formed by amphiphilic modified chitosan can solubilize water-insoluble drugs, slow the drug release, reduce the cytotoxicity and improve the bioavailability of drugs. This paper reviews the researches on the surface activity of chitosan derivatives and their application in drug solubilization and drug carrier. The recent studies on coupling, alkylation, acylation, carboxymethyl-based, quaternary ammonium derivatives of chitosan, and on the drug solubilization of paclitaxel, camptothecin, doxorubicin and methyl-amino folic acid by chitosan-based surfactants are introduced in detail. In the new method of modified chitosan, two ways are worth to notice. The first is to use hydrophobic interactions to constitute the self-assembly system, the second is to introduce the functional groups to form the intelligent drug-loaded micelles.

Polypropylene（PP）is a very important general-purpose resin. However，the applications of PP in many fields are restricted due to its poor dyeability，antistatic property，hydrophilicity and poor compatibility with other polar polymers and mineral fillers. It is effective to improve the polarity and compatibility by grafting polar monomers onto PP backbone as side groups. Kinetic model and grafting mechanism for post-modification of PP are reviewed，which can provide a theoretic way to design the grafted products，improve the graft rate and change product properties. Different grafting monomers and their complex formulation are dicussed. The addition of chemical additives and how to synthetize them are also summarized. Moreover，the development of new multifunction monomers is discussed，which can provide examples and reference for preparing the grafted products.

Aromatic polyamide thin-film composite（TFC）nanofiltration（NF）membranes are very sensitive to a chlorine disinfectant. The oxidative degradation takes place under active chlorine conditions. The free chlorine in feed stream can cause degradation of crosslinked aromatic polyamides and ultimately result in the decline of the membrane separation performance，which shortens the membrane life and greatly limits the further application and development of NF membranes. Series studies of NF materials and structures in recent years are briefly summarized. This review is focused on the oxidative degradation of aromatic polyamides and the mechanism of the decline of the membrane separation performance. The prospect on the development of the oxidation resistance of aromatic polyamide thin-film composite nanofiltration membranes is further analyzed.

Recent advances in study on the preparation of ultra-fine barium carbonate particles were summarized. Different preparation methods，including high gravity technology，liquid precipitation，micro-emulsion，homogeneous precipitation，template，low temperature solid-state reaction，microwave-assisted synthesis etc，were described in detail. The advantage and disadvantage of various methods were discussed and analyzed，and developing direction of ultra-fine barium carbonate preparation was also proposed.

The Diamond/ceramic composite was obtained from composite precursor by sintering. The composite precursor is prepared from gelatin by mixing the synthesized collosol，which will generate the ceramic phase，into diamond powder. The gelatin powder was characterized by DSC，FTIR，SEM，EDS and XRD after thermal treatment，which proves that the amount of the alkali metal added into composite material can be controllable by sol-gel method，and the dielectric loss can be ultimately reduced. The resistivity and dielectric property of the sheet-shaped composite is calculated within high frequency region by resonance circuit. It shows that the resistivity of diamond massive composite is slightly larger than that of diamond thin-film，with the dielectric loss less than 0.002，which is lower than that diamond thin-film of nanometer. The softening temperature is reduced greatly in sol-gel method and the addition of the alkaline metal can be controlled. The diamond composites with dielectric properties superior to that of diamond films are eventually obtained. The simple composite preparation method provides a great potential for mass manufacturing.

In this paper，a series of activated carbons with high specific surface area were prepared by using KOH as an activation agent and delayed petroleum coke as raw material. The effect of KOH/Coke ratio，activation temperature and activation time on the yield and iodine adsorption value was investigated by orthogonal test and further single factor experiments. The results indicated that the significant factor for iodine adsorption value was KOH/coke ratio. The iodine adsorption capacity can be improved by increasing KOH/coke ratio，extending the activation time and selecting the appropriate activation temperature. A activated carbon sample with specific surface area of 2775 m²/g and total pore volume of 2.888 cm³/g was prepared under the conditions of KOH/coke ratio 4∶1，activation temperature 750 ℃ and activation duration 120 min，respectively.

Super Absorbent Polymers are widely used in agriculture，forestry，industry，daily life and other fields，but their storage performance and application in food preservation are seldom studied．The characteristics of freezing and thawing together with the latent heat of superabsorbent composite phase change materials are studied. Results show that the cold keeping time of high-absorbent polymer composite phase change materials is longer than that of ice coolant，the latent heat of phase change，427 kJ/kg，is also higher than the ice coolant．In this work，the high-absorbent polymer composite phase change materials is applied in the coolant storage of fruits，and the structure of crisper is designed，which provide a theoretical reference for future application in food preservation．

N,N,N-trimethyl chitosan quaternary ammonium hydrogel（TMCG）was prepared in the mild condition by using reactive divinyl sulfone（DVS）as a cross-linking agent. The swelling behavior and mechanical properties of TMCG were investigated，together with the water state and distribution in swelling TMCG. The results show that TMCG is an ionic responsive hydrogel with fast swelling rate and high swelling ratio，the maximum equilibrium swelling ratio approaches to 40 times. TMCG has significant ionic responsiveness. Water molecules exist in the TMCG by three different forms of state as free water，freezing bound water，non-freezing bound water，and non-freezing bound water content increases with the increase of cross-linking agent. TMCG has good mechanical properties，the maximum tensile strength is up to 13.82 MPa，and the highest elongation at break is up to 135.3%.

WBPU/PVA composites were prepared by blending WBPU emulsions with PVA solution and characterized by using FTIR，transmittance，AFM，tensile testing，water absorption，and TG，respectively. The effects of PVA content on the properties of the composites film were also investigated. Results show that strong hydrogen bonding action exists between two components. The WBPU/PVA composite with 80% PVA shows excellent compatibility，and the tensile strength of it reaches up to the maximum（61.9 MPa）by about 149% and 38% compared with pure WBPU（24.9 MPa）and pure PVA（44.7 MPa），respectively. The elongation at break and water resistance of WBPU/PVA composites declined with the increasing of PVA content.

The properties，applications and recent market demand of l-menthol are reviewed. Recent advances of four synthetic routes of l-menthol are presented. These routes start from citronellal，l-menthone，pulegone and thymol respectively. The one from citronella or thymol is already industrialized. l-menthol synthesis usually starts from inexpensive natural products. The one from thymol has the least step number，but suffers from more isomers and lower yield of l-menthol. Synthesis of l-menthol from cheap and renewable turpentine shows the potential in industrial application.

Polyhydroxyalkanoates（PHA）with the biodegradability and biocompatibility has become one of the potential medical materials. Its application fields can be enlarged by modifying the PHA’s properties. For this purpose，the PHA was synthesized by the culture of Pseudomonas putida KT2442 with phenylvaleric acid and sucrose as mixed carbon source. The molecular structure of this biomodified PHA was characterized by NMR，IR and GC. The analysis result indicates that the biomodificated PHA is medium-length PHA which contains 3-hydroxyphenylvalerate monomer，and this monomer accounts for 1.04% of the PHA chain. This will be useful reference for further PHA study.

Different types of ionic liquids in catalytic esterification reactions are summarized. Traditional catalysts are often troubled by more side reactions，high corrosiveness，environmental pollution，separation difficulty，and cannot be recycled. Contrarily，ionic liquids show good thermal stability，high efficiency，environmental friendly and can be recycled. Catalytic mechanism of ionic liquids in esterification is reviewed. The bottleneck and limitation of ionic liquids application on esterification are addressed. The research direction of ionic liquid in the esterification is also prospected.

In recent years，hydrogels have attracted a great deal of attention due to their high adsorption capacity，fast adsorption rate and good regeneration properties. The hydrogels with three-dimensional cross-linked polymeric networks are briefly reviewed in this paper. Their adsorption properties of heavy metal ions and dyes are emphatically summarized. Problems of adsorption in wastewater treatment are addressed. The potential research areas are also prospected.

Mesoporous materials SBA-15 modified by different transition metals，including Zn、Fe、Mn、Cu、Co and Ni，were synthesized by impregnation method respectively. The prepared materials were characterized by XRD and BET. Among these six adsorbents，Zn/SBA-15 showed the highest H₂S breakthrough capacity of 29.7 mg·g ^-1adsorbent with 23 wt% loading of zinc. The effect of the gas flow rate，adsorption temperature，the affects of the exit of carbon dioxide and oxygen were also investigated. Zn/SBA-15 could be recycled for four times at 573 K in air environment，and its breakthrough capacity remained same.

The microwave thermal inversion process of oily sludge was studied by programmed temperature increasing. Results show that the microwave thermal inversion process can be divided into 5 stages：temperature rapidly-increasing stage，microwave drying stage，microwave evaporation stage of heavy hydrocarbon，microwave pyrolysis stage and microwave burning stage. At each stage，the appearance of oily sludge significantly changes. There are no significant effects of microwave absorbent，which was produced in the microwave burning processes of oily sludge，on the characteristics of microwave thermal conversion process. However，microwave absorbent accelerates the microwave pyrolysis process，resulting in time decreasing for whole microwave thermal inversion process of oily sludge with less energy consumption. A large volume of non-condensable gases are generated from the microwave pyrolysis stage，which are mainly composed of H₂ and C₁～C₅ with higher portion of C₂～C₅. Much more non-condensable gases are produced at the microwave burning stage compared with that at microwave pyrolysis stage，in which there are higher content of H₂ and less C₃～C₅. Recovered liquid oil，which is composed of 23.95% gasoline，65.44% diesel and 31.06% heavy oil，is largely generated at microwave evaporation stage and microwave pyrolysis stage of oily sludge，indicating that the recovered oil from microwave thermal inversion process of oily sludge has better quality. The concentrations of dissolved heavy metal ions from remains are far below the allowable values specified in Chinese National standard（GB5086.2—1997）.

The composition of energy consumption for qilu petrochemical company 4.0 million tons/year acrylonitrile device is analyzed. A series of energy saving technologies have been developed and applied to this process，which include wastewater incinerator recovery technology，wastewater enrichment technique，membrane rich oxygen aid-combustion technology，new efficient acrylonitrile catalyst，acrylonitrile refined recovery technology，thiamin counter-current double-effect evaporation technology. Energy consumption was reduced to 150 kg standard oil/t.AN in 2010，reached the best record of this device in history，which was 495.6 kg standard oil/t.AN in 2000.

Caustic sludge in refinery was separated to meet the disposal standard. Corresponding wastewater was then used as circulation cooling water after being treated by a high efficient biodegradation process. The average removal efficiency of COD，oil pollutants，NH₃-N can reach 65.5%，80.7%，and 96.0% respectively. The outlet gray water meets the requirement of supplemental circular water standard for SINO-petrochemical industry. About 2540kt gray water was reused in 2010，which is 82.7% more than before. The fresh water consumption for unit crude oil treatment is reduced to 0.478 t.

Process simulation of synthesis and separation of trichlorosilane is realized by ChemCAD，based on the design data of 7000t/a trichlorosilane. The treatment of the exhaust gas from trichlorosilane synthesis has been improved by simulation result. In original condition，waste gas is separated from synthesis gas cryogenically，and then piped into waste deposal system；while in new condition，cryogenic gas in original condition is further compressed and separated cryogenically. The exhaust gas emission is reduced by about 8%，which make the process more favorite in both environment and economy.