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| 1 | Temporal and spatial evolution of coastline and subaqueous geomorphology in muddy coast of the Yellow River Delta显示文摘基于海岸线和 bathometry 的测量数据,由遨游者和 Mapinfo 的软件处理了,并且与在在 Lijin 估计车站,海岸线的时间、空间的进化和在黄河三角洲的泥泞海岸的水下的地形学被分析的不同阶段的沉积负担结合了。结果证明 68% 沉积被从 1953 ~ 2000 绕河嘴并且在沿岸的区域扔的黄河交付。在不同海岸的海岸线响应河路线的移动有特殊变化。海岸线在 Diaokou 河嘴的西方是稳定的。从到 Gudong 油矿的北方的 Diaokou 河嘴的东方的海岸线与海墙保存经历了 siltation,然后严肃的侵蚀,和最后保留的马厩。通常, Qingshuigou 河功课的熬过的河嘴的海岸线拉长了朝海的方向,而在 Qingshuigou 旧河嘴的沙吐痰的南方方面在 Qing 8 在在位置附近注入的黄河以后被侵蚀。离开熬过的河嘴的水下的地形学从 1976 ~ 1996 展出了 siltation,与扁平的 topset 床和更陡峭的 foreset 床。从 1996 ~ 2005,离开 Qingshuigou 旧河嘴的水下的地形学在 topset 和 foreset 被侵蚀在 bottomset 床上的床,而是 silted。离开新河嘴的水下的地形学顺序与 19761996 的相比与小度执行了 siltation。 | PENG Jun MA Suisui CHEN Hongquan LI Zhiwen | 2013 | Journal of Geographical Sciences2013，23，3： | 6 |
| 2 | Life cycle assessment of HFC-134a production by calcium carbide acetylene route in China显示文摘HFC-134a is a widely used environment-friendly refrigerant.At present,China is the largest producer of HFC-134a in the world.The production of HFC-134a in China mainly adopts the calcium carbide acetylene route.However,the production route has high resource and energy consumption and large waste emission,and few of the studies addressed on the environmental performance of its production process.This study quantified the environmental performance of HFC-134a production by calcium carbide route via carrying out a life cycle assessment(LCA)using the CML 2001 method.And uncertainty analysis by Monte-Carlo simulation was also carried out.The results showed that electricity had the most impact on the environment,followed by steam,hydrogen fluoride and chlorine,and the impact of direct CO_(2) emissions in calcium carbide production stage on the global warming effect also could not be ignored.Therefore,the clean energy(e.g.,wind,solar,biomass,and natural gas)was used to replace coal-based electricity and coal-fired steam in this study,showing considerable environmental benefits.At the same time,the use of advanced production technologies could also improve environmental benefits,and the environmental impact of the global warming category could be reduced by 4.1%via using CO_(2) capture and purification technology.The Chinese database of HFC-134a production established in this study provides convenience for the relevant study of scholars.For the production of HFC-134a,this study helps to better identify the specific environmental hotspots and proposes useful ways to improve the environmental benefits. | Suisui Zhang Jingying Li Yan Nie Luyao Qiang Boyang Bai Zhiwei Peng Xiaoxun Ma | 2022 | Chinese Journal of Chemical Engineering2022，35，2： | 1 |
| 3 | Life cycle assessment and economic analysis of HFC-134a production from natural gas compared with oil-based and coal-based production显示文摘China is the largest producer and consumer of HFC-134a(1,1,1,2-tetrafluoroethane)in the world.Coal-based route is mainly adopted to produce HFC-134a,which suffers from large waste and CO_(2) emissions.Natural gas is a low-carbon and clean energy resource,and no research has been found on the environment and economy of producing HFC-134a from natural gas.In this study,CML 2001 method was used to carry out the life cycle assessment of natural gas(partial oxidation)-based and natural gas(plasma cracking)-based routes(abbreviated as gas(O)-based and gas(P)-based routes,respectively),and their environmental performances were compared with coal-based and oil-based routes.Meanwhile,considering that China is vigorously promoting the transformation of energy structure,and the application of electric heating equipment to replace fossil-based heating equipment in industrial field,which has a great impact on the environmental performance of the production processes,the authors conducted a scenario analysis.The results showed that the gas(O)-based route had the most favourable environmental benefits.However,the gas(P)-based route had the highest potential for reducing environmental burdens,and its environmental benefit was the most favourable in scenario 2050.Additionally,the economic performance of the gas(P)-based route was significantly better than that of gas(O)-based and coal-based routes. | Suisui Zhang Gang Li Boyang Bai Luyao Qiang Xiaoxun Ma Jingying Li | 2022 | Frontiers of Chemical Science and Engineering2022，16，12： | 0 |
| 4 | The effect of hydrothermal pretreatment on the structure and fast pyrolysis behaviors of Sheng Li lignite显示文摘The structure and composition of coal determine its fast pyrolysis characteristics,and the study of the relationship between them can play an important role in the efficient and clean utilization of coal.So,in this work,hydrothermal pretreatment was used to artificially change the structure and composition of Sheng Li(SL)lignite,which was used to investigate the influence of structural changes on pyrolysis.The physicochemical structure and composition of samples were characterized by X-ray diffraction,specific surface area and porosity analyzer,solid-state 13C nuclear magnetic resonance,Fourier transform infrared spectroscopy,and elemental analyzer.Pyrolysis experiments were carried out in a powderparticle fluidized bed reactor,and the distribution and composition of the pyrolysis products were analyzed.The gasification activity of char was investigated by thermogravimetric analysis with a CO_(2) atmosphere.The results show that hydrothermal pretreatment(HTP)can destroy the cross-linking structure of SL lignite,and affect its aromaticity,pore structure,functional group,and carbon structure to change the distribution and composition of pyrolysis products of SL lignite,especially the composition of tar.Finally,the structure–activity relationship between the structure,composition,and pyrolysis characteristics of coal was comprehensively studied. | Boyang Bai Luyao Qiang Suisui Zhang Zhiwei Peng Hang Mu Xiaoxun Ma | 2021 | Chinese Journal of Chemical Engineering2021，34，7： | 0 |
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