浙江大学化学工程与生物工程学院联合化学反应工程研究所阳永荣

yangtao

阳永荣，男，1962年10月生，教授，博士生导师，浙江大学求是特聘教授，浙江省低碳烃制造技术工程实验室主任。

         yangyr@zju.edu.cn

    1984年7月毕业于浙江大学化工系，1989年在该校获工学博士学位；1996年晋升浙江大学教授，1997年被批准为博士导师；2002年入选浙江省“新世纪151人才工程”重点培养人员。曾任浙江大学联合化学反应工程研究所所长，曾在英国曼彻斯特大学理工学院UMIST过程集成系、荷兰Twente大学化工系作合作研究者和高级访问学者，主要研究方向是化学反应工程、聚合物工程、化工过程测量和系统工程。为本科生开设化学反应工程、化工系统工程等课程。为研究生开设化工过程分析等课程。负责承担国家自然科学基金委重点项目（3项）、国家科技部863计划重点项目和中国石化十条龙项目等科研项目。近五年在国内外学术刊物上发表论文40篇以上，获授权国内外发明专利30件以上，所开发流化床聚合反应器新技术获国家技术发明二等奖、中国发明专利优秀奖等。参编《塑料工业手册（聚烯烃分册）》、《聚丙烯—原理、工艺与技术》等专著。目前是中文（化学工业类）核心期刊《化学反应工程与工艺》杂志执行主编。

学科专长
化学工程   

研究方向
多相流反应工程，聚合工程，过程系统工程。

开设课程
本科生课程：化学反应工程，化工过程集成。
研究生课程：化工过程分析，化工产品工程。

在研主要项目：
7 静电流化床的流场结构及过程强化的研究(国家自然科学基金重点项目)
6 化工过程中的时空多尺度结构及其效应（国家自然科学基金重大项目）
5 颗粒湍动强度与双温度区流化床的应用基础研究（国家自然科学基金）
4 微化学环境的模拟与烯烃聚合催化剂的负载化研究（国家自然科学基金面上项目）
3 微化学环境的模拟与资源再生结构的设计（国家自然科学基金面上项目）
2 结构化纳米分子筛催化剂研制及其在甲醇制丙烯中的应用（国家科技部十二五重点项目）
1 基于信号结构分析原理的软测量系统和装置（国家科技部863项目）

9 双峰聚乙烯技术研究及工程优化研究
8 气相法HDPE反应器扩容技术的小试研究
7 三元共聚高档聚乙烯电缆护套专用料开发
6 聚乙烯生产过程监控软件包开发
5 双峰聚乙烯气相聚合釜流化状态的研究
4 环管聚合反应器流体力学的实验研究
3 AMOCO聚丙烯气相釜结块定位与操作优化的研究
2 聚乙烯新型循环流化床的计算流体力学模拟
1 聚乙烯催化剂对双峰工艺与产品性能优化研究

专著
1 阳永荣、吕德伟，“聚合反应工程与设备”，——塑料工业手册（聚烯烃分册）洪定一主编，化学工业出版社，北京，1999年(ISBN 7-5025-2354-5/TQ·1098)，p.59-115。
2 阳永荣、詹晓力，聚合反应工程（10万字），在《聚丙烯—原理、工艺与技术》第五章，洪定一主编，北京，中国石化出版社，2002，ISBN7-80164-258-9。P269-337.
3 阳永荣、吴嘉、钱欣平，化学工程与催化材料（4.5万字），在《石油化工技术进展》（国家科学技术学术著作出版基金资助出版），王基铭、袁晴棠主编，北京，中国石化出版社，2002，ISBN 7-80043-536-9。P645-679.

近期代表性论文：
74. Zuwei Liao, Xiaodong Hong, BinBo Jiang, Jingdai Wang, YongrongYang, Novel graphical tool for the design of the heat integrated waterallocation networks, AIChE J, 2016, 62(3): 670-686
73. Yefeng Zhou, Qiang Shi, Zhengliang Huang, Zuwei Liao, JingdaiWang*, Yongrong Yang, Realization and control of multiple temperature zones inliquid-containing gas-solid fluidized bed reactor, AIChE Journal, 2016, 62(5):1454-1466
72. Lelu He, Yao Yang, Zhengliang Huang, Zuwei Liao, Jingdai Wangand Yongrong Yang, Multi-scale analysis of acoustic emission signals indense-phase pneumatic conveying of pulverized coal at high pressure, AIChEJournal, 2016, 62(8): 2635-26
71.Yefeng Zhou, Qiang Shi, Zhengliang Huang, Jingdai Wang, YongrongYang, Effects of liquid action mechanisms on hydrodynamics in liquid-containinggas–solid fluidized bed reactor,?Chemical Engineering Journal, 2016,285: 121-127.
70. Musango Lungu , Haotong Wang, Jingdai Wang, Yongrong Yang,Fengqiu Chen, Two-fluid model simulations of the national energy technologylaboratory bubbling fluidized bed challenge problem, Ind. Eng. Chem. Res.,2016, 55 (17): 5063–5077
69.Jingdai Wang, Qiang Shi, Zhengliang Huang, Yubin Gu,?MusangoLungu,?Yongrong Yang, Experimental investigation of particle size effect onagglomeration behaviors in gas-solid fluidized beds,?Ind. Eng. Chem. Res.,2015, 54(48): 12177-12186.
68. Qing Zhang, Yefeng Zhou, Jingdai Wang, Binbo Jiang, YongrongYang, Siegfried Stapf, Carlos Mattea, Qingxia Gong, Particle motion in two- andthree-phase fluidized bed reactors determined by pulsed field gradient nuclearmagnetic resonance, Chemical Engineering & Technology, 2015, 38(7):1269-1276
67.Musango Lungu, Yefeng Zhou, Jingdai Wang, Yongrong Yang, A CFD studyof a bi-disperse gas-solid fluidized bed: effect of the EMMS sub grid dragcorrection, Powder Technology, 2015, 280: 154-172
66. Kezeng Dong, Qing Zhang, Zhengliang Huang, Zuwei Liao, JingdaiWang*, Yongrong Yang, Experimental investigation of electrostatic effect onbubble behaviors in gas-solid fluidized bed, AIChE Journal, 2015, 61(4):1160-1171
65. Jingyuan Sun, Jingdai Wang*, Yongrong Yang, Zichuan Zhu,Effects of external electric field on bubble and charged particle hydrodynamicsin a gas-solid fluidized bed, Advanced Powder Technology, 2015, 26:563-575
64. Kezeng Dong, Qing Zhang, Zhengliang Huang, Zuwei Liao, JingdaiWang*, Yongrong Yang, Experimental investigation of electrostatic reduction ina gas-solid fluidized bed by an in situ coronacharge eliminator, Ind. Eng.Chem. Res. , 2014, 53(37):14217-14224.
63.Lelu He, Yefeng Zhou, Zhengliang Huang, Jingdai Wang*, Musango Lungu,Yongrong Yang, Acoustic analysis of particle-wall interaction and detection ofparticle mass flow rate in vertical pneumatic conveying. Ind. Eng. Chem. Res.,2014, 53 (23): 9938-9948
62. Haijun Zheng, Zhengliang Huang, Zuwei Liao, Jingdai Wang*,Yongrong Yang, Yuliang Wang, Computational fluid dynamics simulations andexperimental validation of macromixing and flow characteristics in low-densitypolyethylene autoclave reactors, Ind. Eng. Chem. Res., 2014,53(38):14865-14875
61.Kezeng Dong, Yefeng Zhou, Zhengliang Huang, Jingdai Wang*, YongrongYang, Gas bubble behaviors in a gas-solid fluidized bed with an arch agitator,Powder Technol., 2014, 266: 38–44
60. Musango Lungu, Jingdai wang*, Yongrong Yang, Numericalsimulations of ?ow structure and heat transfer in a central jet bubbling?uidized bed, Powder Technol.,2015, 269: 139-152
59. Musango Lungu, Jingdai Wang*, Yongrong Yang, Numericalsimulations of a bubbling fluidized bed reactor with an energy minimizationmultiscale bubble based model: effect of the mesoscale, Ind. Eng. Chem. Res.,2014, 53(42): 16204-16221
58.Binbo Jiang, Yong Yang, Lijun Du, Carlos Mattea, Jingdai Wang*,Siegfried Stapf, Yongrong Yang, Solvent diffusion in silica/poly[styrene-co-(acrylicacid)] core-shell microspheres by pulsed field gradient NMR techniques, Journalof Applied Polymer Science, 2014, 131(8)
57. Zuwei Liao, Junyi Lou, Jingdai Wang*, Binbo Jiang, YongrongYang, Mixing potential: A new concept for optimal design of hydrogen and waternetworks with higher disturbance resistance； AIChE Journal,2014, 60(11): 3762-3772
56. Yuntao Jiang, Conjing Ren, Zhengliang Huang, Jingdai Wang,Binbo Jiang, Jian Yang, Yongrong Yang, Acoustic emission detection of particlemovement in a cross-Flow moving bed, Ind. Eng. Chem. Res., 2014,53(10):4075-4083
55. Binbo Jiang, Xiang Feng, Lixia Yan, Yuntao Jiang, Zuwei Liao,Jingdai Wang, and Yongrong Yang, Methanol to propylene process in a moving bedreactor with byproducts recycling: kinetic study and reactor simulation, Ind.Eng. Chem. Res., 2014, 53(12): 4623-4632.
54. Yefeng Zhou, Congjing Ren, Jingdai Wang*, Yongrong Yang, KezengDong, Effect of hydrodynamic behavior on electrostatic potential distributionin gas-solid fluidized bed, Powder Technology, 2013, 235: 9-17
53. Meijuan Chen, Jingdai Wang*, Binbo Jiang, Yongrong Yang,Diffusion measurements of isopentane, 1-hexene, cyclohexane in polyethyleneparticles by the intelligent gravimetric analyzer, Journal of Applied PolymerScience, 2013, 127(2): 1098-1104
52. Xiaomei Shi, Jingdai Wang*, Binbo Jiang, Yongrong Yang,Hindered phenol grafted carbon nanotubes for enhanced thermal oxidativestability of polyethylene, Polymer, 2013, 54: 1167-1176
51. Yefeng Zhou, Congjing Ren, Jingdai Wang*, Yongrong Yang,Characterization on hydrodynamic behavior in liquid-containing gas-solidfluidized bed reactor, AIChE Journal, 2013, 59(4): 1056-1065
50. Xiaomei Shi, Jingdai Wang*, Binbo Jiang, Yongrong Yang.Influence of nanofiller dimensionality on the crystallization behavior ofHDPE/carbon nanocomposites, Journal of Applied Polymer Science, 2013, 128(6):3609-3618.
49. Yefeng Zhou, Jingdai Wang*, Yongrong Yang, Wenqing Wu, Modelingof the temperature profile in an ethylene polymerization fluidized-bed reactorin condensed mode operation, Ind. Eng. Chem. Res., 2013, 52(12):4455-4464
48. Binbo Jiang, Yong Yang, Lijun Du, Jingdai Wang, Yongrong Yang,Siegfried Stapf, Advanced catalyst technology for broad/bimodal polyethylene,achieved by polymer-coated particles supporting hybrid catalyst, , Ind. Eng.Chem. Res., 2013, 52(7): 2501-2509
47. Jiang Binbo, Du Lijun, Wang Fang, Ye Jian, Wang Jingdai, YangYongrong, TiCl4 immobilized on a composite support SiO2/MgCl2?x(1,4-butanediol)/poly[styrene-co-(acrylicacid)] for ethylene polymerization: The barrier effect ofpoly[styrene-co-(acrylic acid)], Journal of Applied Polymer Science, 2012,125(2): 1207-1218
46. Jingyuan Sun, Jingdai Wang*, Yongrong Yang, CFD Investigation ofparticle fluctuation characteristics of bidisperse mixture in a gas-solidfluidized bed, Chemical Engineering Science, 2012, 82(12): 285-298
45.Yefeng Zhou, Zhengliang Huang, Congjing Ren, Jingdai Wang*, YongrongYang, Agglomeration detection in horizontal stirred bed reactor based onautoregression model by acoustic emission signals, Ind. & Eng. Chem. Res.,2012, 51 (36): 11629-11635
44. Bo Chen, Zuwei Liao, Jingdai Wang*, Huanjun Yu, Yongrong Yang，Exergyanalysis and CO2 emission evaluation for steam methane reforming, InternationalJournal of Hydrogen Energy, 2012, 37: 3191-3200
43. Xiaomei Shi, Binbo Jiang, Jingdai Wang*, Yongrong YangInfluence of wall number and surface functionalization of carbon nanotubes ontheir antioxidant behavior in high density polyethylene, Carbon, 2012, 50(3):1005-1013
42. Jingyuan Sun, Jingdai Wang*, Yongrong Yang, CFD simulation andwavelet transform analysis of vortex and coherent structure in a gas-solidfluidized bed, Chemical Engineering Science，2012, 71（3）：507-519
41. Du Lijun, Ye Jian, Wang Jingdai, Jiang Binbo Yang Yongrong,Synthesis mechanisms of poly[styrene-co-(acrylic acid)]-supported TiCl4catalysts modified by magnesium compounds, Journal of Applied Polymer Science,2012, 123(4): 2517-2525
40. Zuwei Lizo, Gang Rong, Jingdai Wang, Yongrong Yang, Systematicoptimization of heat-integrated water allocation networks, Ind. & Eng.Chem. Res., 2011, 50 (14): 6713-6727
39. Yefeng Zhou, Kezeng Dong, Huang Zhengliang, Jingdai Wang, andYongrong Yang, Fault detection based on acoustic emission-early agglomerationrecognition system in fluidized bed reactor, Ind. & Eng. Chem. Res., 2011,50 (14): 8476–8484
38. Congjing Ren, Yueqi Tang, Jingdai Wang, and Yongrong Yang,Online estimation of coke in a circulating fluidized bed on acoustic emissionsensors and multivariate calibration, Ind. & Eng. Chem. Res., 2011, 50(14): 8420–8429
37. Wei Li, Binbo Jiang, Jingdai Wang*, Yongrong Yang,Organic/inorganic support for immobilizing (n-BuCp)2ZrCl2/TiCl3 hybrid catalystto prepare polymer blends, Polymer International, 2011, 60(4): 676-684
36. Congjing Ren, Jingdai Wwang, Di Song, Binbo Jiang, Zuwei Liao*,Yongrong Yang Determination of particle size distribution by multi-scaleanalysis of acoustic emission signals in gas-solid fluidized bed, Journal ofZhejiang University-Science A (Appl Phys & Eng), 2011, 12(4): 260-267
35. Lijun Du, Wei Qin, Jingdai Wang, Yongrong Yang, Wenqing Wu,Binbo Jiang, An improved phase-inversion process for the preparation ofsilica/poly[styrene-co-(acrylic acid)] core-shell microspheres: synthesis andapplication in the field of polyolefin catalysis, Polymer International， 2011，60(4):584-591
34. Zuwei Liao, Gang Rong, Jingdai Wang, Yongrong Yang, Rigorousalgorithmic targeting methods for hydrogen networks—Part II:Systems with one hydrogen purification unit, Chemical Engineering Science,2011, 66: 821-833
33. Zuwei Liao, Gang Rong, Jingdai Wang, Yongrong Yang, Rigorousalgorithmic targeting methods for hydrogen networks—Part I:systems with no hydrogen purification, Chemical Engineering Science, 2011, 66:813-820
32. Zuwei Liao, Gang Rong, Jingdai Wang*, Yongrong Yang, Rigorousalgorithmic targeting methods for hydrogen networks—Part II:Systems with one hydrogen purification unit, Chemical Engineering Science,2011, 66: 821-833
31. Zuwei Liao, Gang Rong, Jingdai Wang*, Yongrong Yang, Rigorousalgorithmic targeting methods for hydrogen networks—Part I:systems with no hydrogen purification, Chemical Engineering Science, 2011, 66:813-820
30. Jingdai Wang, Congjing Ren, Yongrong Yang, Characterization offlow regime transition and particle motion using acoustic emission measurementin a gas-solid fluidized bed, AIChE Journal, 2010, 56(5): 1173-1183
29. Wei Li, Alina Adams, Jingdai Wang, Bernhard Bluemich, YongrongYang, Polyethylene/palygorskite nanocomposites: Preparation by in situpolymerization and their characterization, Polymer, 2010, 51(21):4686-4697

28. Jingdai Wang, Congjing Ren, Yongrong Yang, Characterization offlow regime transition and particle motion using acoustic emission measurementin a gas-solid fluidized bed, AIChE Journal, 2010, 56(5): 1173-1183
27. Zuwei Lizo, Gang Rong, Jingdai Wang, Yongrong Yang, Systematicoptimization of heat-integrated water allocation networks, Ind. & Eng.Chem. Res., 2011, 50 (14): 6713-6727
26. Yefeng Zhou, Kezeng Dong, Huang Zhengliang, Jingdai Wang, andYongrong Yang, Fault detection based on acoustic emission-early agglomerationrecognition system in fluidized bed reactor, Ind. & Eng. Chem. Res., 2011,50 (14): 8476–8484
25. Congjing Ren, Yueqi Tang, Jingdai Wang, and Yongrong Yang,Online estimation of coke in a circulating fluidized bed on acoustic emissionsensors and multivariate calibration, Ind. & Eng. Chem. Res., 2011, 50(14): 8420–8429
24. Zuwei Liao, Gang Rong, Jingdai Wang, Yongrong Yang, Rigorousalgorithmic targeting methods for hydrogen networks—Part II:Systems with one hydrogen purification unit, Chemical Engineering Science,2011, 66: 821-833
23. Zuwei Liao, Gang Rong, Jingdai Wang, Yongrong Yang, Rigorousalgorithmic targeting methods for hydrogen networks—Part I:systems with no hydrogen purification, Chemical Engineering Science, 2011, 66:813-820
22. Jingdai Wang, Xiaojing Jiang, Chengwu Liu, Yongrong Yang, BinboJiang, A study of ultrasonic radiation dissipation in powder processing system,Chemical Engineering Communications, 2010, 197(2): 239-249
21. Xianbo Yu, Wei Li, Yi Xu, Jingdai Wang, Yongrong Yang, Nan Xuand Haoqi Wang, Effect of polymer granule size on the electrostatic behavior ingas-solid fluidized beds, Industrial & Engineering Chemistry Research,2010, 49 (1): 132–139
20. Yijun He, Jingdai Wang, Yijia Cao, Yongrong Yang, Resolution ofStructure Characteristics of AE Signals in Multiphase Flow System — From Datato Information, AIChE Journal, 2009, 55(10): 2563-2577
19. Yijia Cao, Jingdai Wang, Yijun He, Wei Liu, Yongrong Yang,Agglomeration detection based on attractor comparison in horizontal stirred bedreactors by acoustic emission sensors, AIChE Journal, 2009, 55(12):3099-3108
18．Jingdai Wang, Yijia Cao, Xiaojing Jiang and Yongrong Yang,Agglomeration detection by Acoustic Emission (AE) sensors in fluidized bed,Industrial & Engineering Chemistry Research, 2009, 48(7): 3466–3473.
17. Jingdai Wang, Wei Li, Binbo Jiang, Yongrong Yang, Fe(acac)n andCo(acac)n bearing different bis(imino)pyridine ligands for ethylenepolymerization and oligomerization, Journal of Applied Polymer Science, 2009,113(4): 2378-2391
16. Jingdai Wang, Congjing Ren, Yongrong Yang and Linxi Hou,Characterization of particle fluidization pattern in a gas solid fluidized bedby based on acoustic emission (AE) measurement, Industrial & EngineeringChemistry Research, 2009, 48(18): 8508–8514
15. Jingdai Wang, Yi Xu, Wei Li, Yongrong Yang*, Fang Wang,Electrostatic potential in gas-solid fluidized beds influenced by the injectionof charge inducing agents, Journal of Electrostatics, 2009, 67(5): 815-826
14． Congjing Ren, Xiaojing Jiang, Jingdai Wang, Yongrong Yang, andXiaohuan Zhang, Determination of critical speed for complete solid suspensionusing acoustic emission method based on multiscale analysis in stirred tank,Industrial & Engineering Chemistry Research, 2008, 47(15): 5323-5327.
13. Fang Wang, Jingdai Wang and Yongrong Yang, Distribution ofelectrostatic potential in a gas-solid fluidized bed and measurement of bedlevel, Ind. Eng. Chem. Res., 2008, 47 (23): 9517–9526
12. Zuwei Liao, Jingdai Wang, Yongrong Yang, letter to the editor:unified conceptual approach to targeting and design of water and hydrogennetworks, AIChE Journal, 2007, 53(7): 1898-1899
11. Xiaowei Yan, Jingdai Wang, Yibin Shan , Yongrong Yang, Chao He,Infinite dilution diffusion coefficients of organic solvents in nascentpolyethylene particles by inverse gas chromatography measurements, E-POLYMERS,2007，014：1-16
10．Wenjuan Yao, Xiaoping Hu, Yongrong Yang， Modelingthe Solubility of Ternary Mixtures of Ethylene, iso-pentane, n-hexane inSemicrystalline Polyethylene，Journal of Applied Polymer Science, 2007, 104 (6): 3654-3662
9．Wenjuan Yao, Xiaoping Hu, Yongrong Yang, Modeling solubility ofgases in semicrystalline polyethylene, Journal of Applied Polymer Science,2007, 103(3): 1737-1744
8. Zuwei Liao, Jintao Wu, Binbo Jiang, Jingdai Wang and YongrongYang, Design Methodology for Flexible Multiple Plant Water Networks, Ind. Eng.Chem. Res. 2007, 46(14), 4954-4963
7. Xiaojing Jiang, Jingdai Wang, Binbo Jiang, Yongrong Yang andLinxi Hou, Study of power spectrum of Acoustic Emission (AE) by accelerometersin fluidized beds, Ind. Eng. Chem. Res. 2007, 46(21): 6904-6909
6．Song Chen, Yongrong Yang, Kuixi Zhang and Jingdai Wang，BETA zeolitemade from mesoporous material and its hydrocracking performance, CatalysisToday, 2006, 116(1): 2-5
5．Jingdai Wang, Jizhong Chen and Yongrong Yang, Micronization oftitanocene dichloride by rapid expansion of supercritical solution and itsethylene polymerization, The Journal of Supercritical Fluids, 2005, 33: 159–172
4. Jingdai Wang, Jizhong Chen and Yongrong Yang, Solubility oftitanocene dichloride in supercritical propane, Fluid Phase Equilibria, 2004,220( 2): 147-151
3. Guibing Zhao and Yongrong Yang Multi-scale Resolution ofFluidized - Bed Pressure Fluctuations, AIChE J, 2003, 49(4): 869-882
2. Yongrong Yang, Instability Analysis of the Fluidized Bed forEthylene Polymerization with Condensed Mode Operation, Industrial &Engineering Chemistry Research, 2002, 41(10): 2579-2584.
1. Guibing Zhao, Jizhong Chen and Yongrong Yang, Study onPredictive Model and Deterministic Mechanism of Pressure Fluctuations in aBubbling Fluidized Bed, AIChE J, 2001, 47(7): 1524-1532.

fengli

聚烯烃合成树脂是国民经济建设和人民生活必需的重要基础材料。兼顾过程低排放和产品高质量，是聚烯烃全行业面临的重大挑战。浙江大学化工学院阳永荣教授团队围绕这一重大需求，与中国石化齐鲁分公司和杭州双安科技有限公司密切合作，联合开发了“余压膨胀深冷法绿色高效回收聚烯烃排放气新技术（RePEC）”，成功为国内聚烯烃装置安上“中国利器——冷静的智慧大脑”，使我国的聚烯烃清洁生产工艺的整体技术水平明显提升。获2020年度中国石油和化学工业联合会科技进步一等奖。

       该技术通过余压膨胀深冷分离与聚烯烃生产工艺的优化集成，建立了聚合物VOCs脱附-回收氮循环和和聚合反应-深冷烃循环，开发了深冷作用的微量组分管理系统，解决了聚合物内高碳VOCs难脱附、排放气低碳VOCs难回收，流程中微量敏感组分难监控的行业难题。工业应用表明，该技术可灵活处理从单反应器到双反应器、从单峰到双峰树脂牌号，从单装置到多装置排放气的同时回收。装置重烃回收率可达100%、轻烃回收率超过90%、氮气回收率超过75%；铬系高密度聚乙烯产品中高碳VOCs含量降低20%，产品气味明显减弱、品质显著提升，缩短了50%的开车时间，减少了装置非计划停车次数。
       该技术已在36套大型聚烯烃装置上成功推广应用，占中国大陆气相法聚乙烯产能的70%以上，使聚烯烃装置拥有了“冷静智慧的中国利器”，提升了装置清洁生产水平。2015年技术入选国家发改委“国家重点推广的低碳技术目录”。2020年经中国石油和化学工业联合会组织的专家鉴定，一致认为：该技术创新性和应用性强，整体技术达到国际先进水平，其中余压膨胀制冷法回收聚烯烃排放气新工艺处于国际领先水平。