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| 1 | Synthesis and evaluation of an oil-soluble viscosity reducer for heavy oil显示文摘To reduce the viscosity of highly-viscous oil of the Tahe oilfield (Xinjiang,China),an oilsoluble polybasic copolymer viscosity reducer for heavy oil was synthesized using the orthogonal method.The optimum reaction conditions are obtained as follows:under the protection of nitrogen,a reaction time of 9 h,monomer mole ratio of reaction materials of 3:2:2 (The monomers are 2-propenoic acid,docosyl ester,maleic anhydride and styrene,respectively),initiator amount of 0.8% (mass percent of the sum of all the monomers) and reaction temperature of 80 oC.This synthesized viscosity reducer is more effective than commercial viscosity reducers.The rate of viscosity reduction reached 95.5% at 50 oC.Infrared spectra (IR) and interfacial tensions of heavy oil with and without viscosity reducer were investigated to understand the viscosity reduction mechanism.When viscosity reducer is added,the molecules of the viscosity reducer are inserted amongst the molecules of crude oil,altering the original intermolecular structure of crude oil and weakening its ability to form hydrogen bonds with hydroxyl or carboxyl groups,so the viscosity of crude oil is reduced.Field tests of the newly developed oil-soluble viscosity reducer was carried out in the Tahe Oilfield,and the results showed that 44.5% less light oil was needed to dilute the heavy oil to achieve the needed viscosity. | Guo Jixiang Wang Heyi Chen Chaogang Chen Yun Xie Xiaohai | 2010 | Petroleum Science2010，7，4： | 24 |
| 2 | Effect of the Transient Response in Si/Ge Parallelizing PN Junction显示文摘There are some new results about photovoltaic transient response in the new effect. We suggest a theoretical model to explain the effect reasonably. The theoretical calculation results agree with that in experiments. | Weiqi HUANGt and Chaogang CHEN(Department of Physics, Guizhou Educational College, Guiyan 550003, China)Ergang CHEN(Department of Physics, Yunnan University, Kunming 650091, China)To whom correspondence should be addressed | 1999 | Journal of Materials Science & Technology1999，15，4： | 10 |
| 3 | Study of asphaltene deposition from Tahe crude oil显示文摘Borehole blockage caused by asphaltene deposition is a problem in crude oil production in the Tahe Oilfield, Xinjiang, China. This study has investigated the influences of crude oil compositions, temperature and pressure on asphaltene deposition. The asphaltene deposition trend of crude oil was studied by saturates, aromatics, resins and asphaltenes (SARA) method, and the turbidity method was applied for the first time to determine the onset of asphaltene flocculation. The results showed that the asphaltene deposition trend of crude oil by the turbidity method was in accordance with that by the SARA method. The asphaltene solubility in crude oil decreased with decreasing temperature and the amount of asphaltene deposits of T739 crude oil (from well T739, Tahe Oilfield) had a maximum value at 60 o C. From the PVT results, the bubble point pressure of TH10403CX crude oil (from well TH10403CX, Tahe Oilfield) at different temperatures can be obtained and the depth at which the maximum asphaltene flocculation would occur in boreholes can be calculated. The crude oil PVT results showed that at 50 , 90 and 130 o C, the bubble point pressure of TH10403CX crude oil was 25.2, 26.4 and 27.0 MPa, respectively. The depth of injecting asphaltene deposition inhibitors for TH10403CX was determined to be 2,700 m. | CHEN Chaogang GUO Jixiang AN Na REN Bo LI Yaguang JIANG Qingzhe | 2013 | Petroleum Science2013，10，1： | 5 |
| 4 | Research and Commercial Application of CPP Technology for Producing Light Olefins from Heavy Oil显示文摘Catalytic pyrolysis process(CPP)producing ethylene and propylene from paraffin base atmospheric residue was developed by RIPP and its first in the world unit was put into commercial operation successfully.The results of performance test showed that the yield of ethylene and propylene reached 14.84% and 22.21% ,respectively,at a reaction temperature of610℃by using Daqing atmospheric residue as the feedstock under an operation mode of producing ethylene and propylene at the same time,and the aromatic content of cracked naphtha reached 82.46% .The successful operation of this unit has opened a novel route for producing light olefins and aromatics from heavy oil,which is also a good example symbolizing the integration of refining technology with petrochemical process. | Zhu Genquan Xie Chaogang | 2013 | China Petroleum Processing & Petrochemical Technology2013，15，3： | 5 |
| 5 | Research Progress in Catalytic Cracking Reaction of Tetralin and Decalin显示文摘The integrated catalytic hydrogenation and catalytic cracking process has been gradually adopted by refineries to satisfy the requirements for manufacture of light and clean petroleum products. To explore the reaction laws of hydrogenated aromatics in hydrotreated oil, the catalytic cracking reaction laws of hydrogenated aromatics have been reviewed by taking tetralin and decalin as examples of different degrees of hydrogenated aromatics. Moreover, the reaction mechanism of tetralin and decalin has been analyzed emphatically. The effects of zeolite pore structure, acid properties and process parameters on reaction laws have been analyzed carefully. It is considered that the catalytic cracking performance of hydrogenated aromatics with different hydrogen saturation degrees is quite different. It is necessary to control the hydrogenation depth, optimize the hydrocarbon composition of catalytic cracking feed materials for maximizing the yield of target products. | Li Xiao Xie Chaogang Wei Xiaoli | 2017 | China Petroleum Processing & Petrochemical Technology2017，19，4： | 5 |
| 6 | Advances in DCC Process and Catalyst for Propylene Production from Heavy Oils显示文摘(两重棉包线)深催化的裂开由 RIPP (石油处理的研究院)发展了, SINOPEC 是为生产在石油化学的工业使用的原料用重化工物品从 FCC 过程导出的一个催化变换过程,第一在 1990 被表明例如乙烯和 propylene.It 并且自从 1994 .Up ,被商品化到现在,七个单位被放进生产在内并且在中国。 | Xie Chaogang Gao Yongcan | 2008 | China Petroleum Processing & Petrochemical Technology2008，10，4： | 4 |
| 7 | Fluorine-substituted O3-type NaNi_(0.4)Mn_(0.25)Ti_(0.3)Co_(0.05)O_(2-x)F_(x) cathode with improved rate capability and cyclic stability for sodium-ion storage at high voltage显示文摘O3-type Na NiO_(2)-based cathode materials undergo irreversible phase transition and serious capacity decay at high voltage above 4.0 V in sodium-ion batteries. To address these challenges, effects of Fsubstitution on the structure and electrochemical performance of Na Ni_(0.4)Mn_(0.25)Ti_(0.3)Co_(0.05)O_(2) are investigated in this article. The F-substitution leads to expanding of interlayer, which can enhance the mobility of Na+. NaNi_(0.4)Mn_(0.25)Ti_(0.3)Co_(0.05)O_(1.92)F_(0.08)(NMTC-F_(0.08)) with the optimal F-substitution degree exhibits much improved rate capability and cyclic stability. It delivers reversible capacities of 177 and 97 m Ah g^(-1) at 0.05 and 5 C within 2.0–4.4 V, respectively. Galvanostatic intermittent titration technique verifies faster kinetics of Na+diffusion in NMTC-F_(0.08). And in-situ XRD investigation reveals the phase evolution of NMTC-F_(0.08), indicating enhanced structural stability results from F-substitution. This study may shed light on the development of high performance cathode materials for sodium-ion storage at high voltage. | Chaojin Zhou Lichun Yang Chaogang Zhou Jiangwen Liu Renzong Hu Jun Liu Min Zhu | 2021 | Journal of Energy Chemistry2021，30，9： | 3 |
| 8 | Roles of Emerging FCC-based Technologies in Shifting to Petrochemicals Production显示文摘The emerging FCC-based technologies are applied in an attempt to shift to the production of designated light olefins(including mainly ethylene and propylene) as well as light aromatics(including benzene, toluene, and xylene)developed by the Research Institute of Petroleum Processing(RIPP), SINOPEC. The RIPP's proprietary technologies covering the Deep Catalytic Cracking(DCC), the Enhanced Deep Catalytic Cracking(DCC-PLUS), and the Maximizing Catalytic Propylene(MCP) have been playing decisive roles in the processing of crude aimed at closer integration of petroleum refining and petrochemical production both inside and outside of China since 1990. Three cases of commercial applications in five refineries, including Case Ⅰ— the closer integration between the steam cracker and the DCC/DCC-PLUS unit, Case Ⅱ— the petrochemical refinery provided with a DCC-PLUS unit, and Case Ⅲ— the integrated petrochemical/fuels refinery provided with a MCP unit, have highlighted their far-reaching effects on global petrochemicals production. | Xie Chaogang Gao Yongcan Zhu Genquan Zhang Jiushun | 2017 | China Petroleum Processing & Petrochemical Technology2017，19，4： | 2 |
| 9 | Study on the Performance and Commercial Application of New Generation DMMC-1 Type Catalyst for Deep Catalytic Cracking显示文摘在过去的十年, SINOPEC 不间断地一直在从事发展并且深催化的裂开升级(两重棉包线) 为从重油生产丙烯的技术。最近,在在在分子的水平精制的油的区域取得了很多进步以后的 SINOPEC 开发了为 DCC 过程设计的新一代 DMMC-1 类型催化剂。实验室评估测试与展示最好的全面表演的存在 MMC-2 类型催化剂相比显示出那, DMMC-1 类型催化剂增加了丙烯收益 2.2% ,丙烯选择增加了 10% 。说的催化剂为重油在汽油与石蜡内容的减小一起裂开和焦炭选择完成更好的产品分布并且改进产品质量改进了它的能力。在在西诺佩克·安金·布朗奇同伴的一个 650-kt/a 广告两重棉包线单位的说的催化剂的申请的结果表明了 DMMC-1 催化剂为重油裂开表明了一个提高的能力并且能从 83.92 m%增加全部的液体收益到 84.56 m%, LPG 收益到从 34.60 m %,到从到从 44.91 m%的 45.91 m%的 15.37 m%和丙烯集中的 17.80 m%的丙烯收益,和还原剂的 38.90 m %从 7.61 m%的焦炭收益到在到 37.5 v%的从 42.3 v%的汽油的 7.05 m%和石蜡内容,导致一年等于5219万 RMB 的增长利润。这种技术进一步升级了并且发展在工业同伴之中一直在命令一个领先的位置的 DCC 技术。 | Long Jun Tian Huiping Liu Yujian Xie Chaogang Li Jibing | 2007 | China Petroleum Processing & Petrochemical Technology2007，9，4： | 2 |
| 10 | Commercial Application of CPP for Producing Ethylene and Propylene from Heavy Oil Feed显示文摘A new process named CPP (Catalytic Pyrolysis Process) for producing ethylene andpropylene from heavy oil feedstock has been developed. The catalyst CEP was specially designedfor this process, which has bi-functional catalytic activities for both carbonium ion reaction andfree radical reaction, so as to maximize the yields of ethylene and propylene. The commercial trialshowed that the yield of ethylene and propylene was 20.37% and 18.23% respectively inmaximum ethylene operation with Daqing AR as feedstock, and the yield of ethylene and propylenewas 9.77% and 24.60% respectively in maximum propylene operation by using the same feedstock.Compared with steam cracker, the feed cost of CPP is much lower for producing ethylene andpropylene. | Hou Dianguo Xie Chaogang Wang Xieqing(Research Institute of Petroleum Processing, Beijing 100083) | 2003 | China Petroleum Processing & Petrochemical Technology2003，5，1： | 2 |
| 11 | Isotype Heterojunction‑Boosted CO_(2) Photoreduction to CO显示文摘Photocatalytic conversion of CO_(2) to high-value products plays a crucial role in the global pursuit of carbon–neutral economy.Junction photocatalysts,such as the isotype heterojunctions,offer an ideal paradigm to navigate the photocatalytic CO_(2) reduction reaction(CRR).Herein,we elucidate the behaviors of isotype heterojunctions toward photocatalytic CRR over a representative photocatalyst,g-C_(3)N_(4).Impressively,the isotype heterojunctions possess a significantly higher efficiency for the spatial separation and transfer of photogenerated carriers than the single components.Along with the intrinsically outstanding stability,the isotype heterojunctions exhibit an exceptional and stable activity toward the CO_(2) photoreduction to CO.More importantly,by combining quantitative in situ technique with the first-principles modeling,we elucidate that the enhanced photoinduced charge dynamics promotes the production of key intermediates and thus the whole reaction kinetics. | Chaogang Ban Youyu Duan Yang Wang Jiangping Ma Kaiwen Wang Jiazhi Meng Xue Liu Cong Wang Xiaodong Han Guozhong Cao Liyong Gan Xiaoyuan Zhou | 2022 | Nano-Micro Letters2022，14，5： | 2 |
| 12 | Study of asphaltene dispersion and removal for high-asphaltene oil wells显示文摘Many wellbores are blocked by asphaltene deposits,which lead to production problems in the oilfield development process.In this paper,methods such as elemental analysis,and solvent extraction are adopted for the study of wellbore blockages.The content of organic matter in blockages is higher than 96% and asphaltene is the main component of the organic matter with n-heptane asphaltene content of 38%.Based on the above analyses,an agent for asphaltene dispersion and removal(named as SDJ) was developed.The performance of the SDJ agent was evaluated,and it was found that the dissolution rate of asphaltene can reach 2.9 mg.mL-1.min-1 at 60 oC.SDJ agent(1wt%) was added to crude oil with a colloid instability index greater than 0.9 can effectively inhibit asphaltene deposition in the wellbore.By the viscosity method,the dissolution amount of SDJ agent was calculated,and it was found that when the viscosity of the system is around 2,000 mPa.s(the common viscosity of crude oil),the amount of SDJ agent added to the blockage was at least 96 g per 100 g blockages.Therefore,SDJ agent has promising application for dispersion and removal of asphaltene deposition in high-asphaltene wells. | Chen Chaogang Guo Jixiang An Na Pan Yangqiu Li Yaguang Jiang Qingzhe | 2012 | Petroleum Science2012，9，4： | 1 |
| 13 | Correlation between expressions of ERCC1/TS mRNA and effects of gastric cancer to chemotherapy in the short term显示文摘 | Liqi Chen Guoli Li Jieshou Li Chaogang Fan Jian Xu Bo Wu Kun Liu Caihua Zhang | 2013 | Cancer Chemotherapy and Pharmacology2013，，4： | 1 |
| 14 | The effect of flow rate of compressed hot water on xylan,lignin,and total mass removal from corn stover显示文摘 | Chaogang Liu Charles E Wyman | 2003 | Industrial Engineering Chemistry Research2003，42，21： | 1 |
| 15 | Ectopic expression of the spike protein of rice ragged stunt Oryza virus in trans- genic rice plants inhibits transmission of the virus to insects 显示文摘 | Chaogang S Jianhua W Guoying Z | 2003 | Molecular Breeding2003，11，： | 1 |
| 16 | Expression of bkt and bch genes from Haematococcus pluvialis in transgenic Chlamydomonas显示文摘β-carotene ketolase andβ-carotene hydroxylase encoded by bkt and bch,respectively,are key enzymes required for astaxanthin biosynthesis in Haematococcu pluvialis 34-1n.Two expression vectors containing cDNA sequences of bkt and bch were constructed and co-transformed into cell-wall-deficient Chlamydomonas reinhardtii CC-849.Transgenic algae were screened on TAP agar plates containing 10μg mL-1 Zeomycin.PCR-Southern analysis showed that bkt and bch were integrated into the genomes of C.reinhardtii.Transcripts of bkt and bch were further confirmed by RT-PCR-Southern analysis.Compared with the wild type,transgenic algae produced 29.04%and 30.27%more carotenoids and xanthophylls,respectively.Moreover,the transgenic algae could accumulate 34%more astaxanthin than wild type.These results indicate that foreign bkt and bch genes were successfully translated intoβ-carotene ketolase andβ-carotene hydroxylase,which were responsible for catalyzing the biosynthesis of astaxanthin in transgenic algae. | ZHENG KaiJing WANG ChaoGang XIAO Ming CHEN Jun LI JianCheng HU ZhangLi | 2014 | Science China(Life Sciences)2014，57，10： | 1 |
| 17 | Wyman Partial flow of compressed-hot water through corn stover to enhance hemicellulose sugar recovery and enzymatic digestibility of cellulose显示文摘 | Chaogang Liu Charles E | 2005 | Bioresource Technology2005，18，96： | 1 |
| 18 | Effects of different correlation metrics and preprocessing factors on small-world brain functional networks: A resting-state func- tionalMRI study显示文摘 | Liang Xia Wang Jinhui Yan Chaogang | 2012 | PLoSOne2012，7，32： | 1 |
| 19 | The effect of flow rate of compressed hot water on xylan, lignin, and total mass re- moval from corn stover显示文摘 | LIU Chaogang WYMAN C E | 2003 | Ind Eng Chem Res2003，42，21： | 1 |
| 20 | A Hybrid Approach for Selection in Service Community显示文摘 | TANG Chaogang | 2014 | China Communications2014，11，A01： | 1 |
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