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学者姓名:王树众

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< Page ,Total 83 >
Effects of key parameters on water film properties and temperature field distribution inside transpiring wall reactor EI SCIE Scopus
期刊论文 | 2023 , 192 | JOURNAL OF SUPERCRITICAL FLUIDS
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Abstract :

Transpiring wall reactor (TWR) can efficiently weaken corrosion and salt deposition problems during super-critical water oxidation. Its corrosion and salt deposition resistance are mainly affected by water film properties and temperature field distribution. Therefore, the effects of crucial parameters on water film properties and temperature field distribution are investigated via numerical simulation in this work. The results indicate that the upper supercritical oxidation zone is mainly affected by the second layer of transpiration water instead of the third layer. The second, third layer optimal injection locations are at 0.036 m, 0.060 m in this study, respectively. Excessively thick transpiring wall decreases water film coverage rate thereby damaging TWR, conversely makes supercritical zone shrink and thus weakening degradation ability. Annular gap primarily affects the temperature distribution near the transpiring wall. Under the conditions of the work, transpiring wall thickness of 0.002 m and annular gap of 0.004 m are recommended.

Keyword :

Heat and mass transfer Numerical simulation Supercritical water oxidation Temperature field distribution Transpiring wall reactor Water film property

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GB/T 7714 Feng, Peng , Xu, Donghai , Ma, Mingyan et al. Effects of key parameters on water film properties and temperature field distribution inside transpiring wall reactor [J]. | JOURNAL OF SUPERCRITICAL FLUIDS , 2023 , 192 .
MLA Feng, Peng et al. "Effects of key parameters on water film properties and temperature field distribution inside transpiring wall reactor" . | JOURNAL OF SUPERCRITICAL FLUIDS 192 (2023) .
APA Feng, Peng , Xu, Donghai , Ma, Mingyan , Zhang, Yishu , Zhao, Jun , Wang, Shuzhong . Effects of key parameters on water film properties and temperature field distribution inside transpiring wall reactor . | JOURNAL OF SUPERCRITICAL FLUIDS , 2023 , 192 .
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Microstructural understanding of the oxidation and inter-diffusion behavior of Cr-coated Alloy 800H in supercritical water EI SCIE Scopus
期刊论文 | 2023 , 211 | CORROSION SCIENCE
SCOPUS Cited Count: 30
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Abstract :

In this study, corrosion tests were performed on Cr-coated Alloy 800 H in 500 degrees C supercritical water, containing 6000 mg center dot L-1 oxygen, for 500 h. After exposure, the structure of the sample can be divided into a Cr2O3 layer with a nanocrystal structure, a residual Cr coating with columnar or equiaxed Cr grains, an inter-diffusion layer including Fe-Ni-rich and Cr-O-rich zones, and an alloy substrate. Transmission electron microscopy was employed for the high-resolution analysis of atom diffusion in the sample. The outward diffusion of Fe and Ni was restrained by the coating, and no oxide exfoliation was observed.

Keyword :

Alloy 800H Corrosion Cr coatings Magnetron sputtering Supercritical water

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GB/T 7714 Yang, Jianqiao , Bai, Shuyuan , Sun, Jiyuan et al. Microstructural understanding of the oxidation and inter-diffusion behavior of Cr-coated Alloy 800H in supercritical water [J]. | CORROSION SCIENCE , 2023 , 211 .
MLA Yang, Jianqiao et al. "Microstructural understanding of the oxidation and inter-diffusion behavior of Cr-coated Alloy 800H in supercritical water" . | CORROSION SCIENCE 211 (2023) .
APA Yang, Jianqiao , Bai, Shuyuan , Sun, Jiyuan , Wu, Hao , Sun, Shenghan , Wang, Shuzhong et al. Microstructural understanding of the oxidation and inter-diffusion behavior of Cr-coated Alloy 800H in supercritical water . | CORROSION SCIENCE , 2023 , 211 .
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Physico-Chemical Structure and Gasification Performance of Co-Pyrolytic Char Produced by the Pyrolysis of Polyvinyl Chloride Blends with Two Rank Coals SCIE Scopus
期刊论文 | 2022 , 7 (36) , 32280-32291 | ACS OMEGA
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Co-pyrolysis of waste plastics and coal has been considered to be an environmentally friendly and scalable waste treatment technology. This study investigated the influence of polyvinyl chloride (PVC) on the physico-chemical structure and gasification performance of co-pyrolytic char with lignite (PZ) and bituminous (SM) coal. The structure characteristics were explored by applying an X-ray diffractometer and a specific surface area analyzer. The quantitative analysis on the influence of PVC on pore characteristics and carbon microcrystal structure was conducted by the fractal theory and deconvolution method. The gasification performance was explored using a thermogravimetric analyzer. When the PZ blending ratio was larger than 50%, the specific surface area of PVCPZ chars enlarged significantly due to the increment of mesopores. Nevertheless, the effect of SM on the pore structure was not pronounced, and the specific surface area of PVCSM chars was as small as PVC char. A higher PZ blending ratio benefited the formation of mesopores with an aperture smaller than 10 nm for PVCPZ chars, whereas SM had little influence on pore diameter distributions of PVCSM chars attributed to the remarkable coating effects. The values of fractal dimension of co-pyrolytic char were larger than PVC char, revealing that the adjunction of coal increased the pore surface coarseness and improved the complicacy of the pore structure. Quantitative analysis on XRD spectra indicated that the disorder extent of the carbon structure was improved because of coal addition, and the influence of lignite on the disorder degree of the carbon structure was more significant. The gasification reaction of co-pyrolytic char showed significant synergistic effects, resulting in the improvement of gasification performance.

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GB/T 7714 Meng, Haiyu , Wang, Mengzhuo , Wu, Zhiqiang et al. Physico-Chemical Structure and Gasification Performance of Co-Pyrolytic Char Produced by the Pyrolysis of Polyvinyl Chloride Blends with Two Rank Coals [J]. | ACS OMEGA , 2022 , 7 (36) : 32280-32291 .
MLA Meng, Haiyu et al. "Physico-Chemical Structure and Gasification Performance of Co-Pyrolytic Char Produced by the Pyrolysis of Polyvinyl Chloride Blends with Two Rank Coals" . | ACS OMEGA 7 . 36 (2022) : 32280-32291 .
APA Meng, Haiyu , Wang, Mengzhuo , Wu, Zhiqiang , Zhao, Jun , Li, Jiake , Wang, Shuzhong . Physico-Chemical Structure and Gasification Performance of Co-Pyrolytic Char Produced by the Pyrolysis of Polyvinyl Chloride Blends with Two Rank Coals . | ACS OMEGA , 2022 , 7 (36) , 32280-32291 .
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Inorganic salts crystallization and deposition characteristics and mechanisms in supercritical water EI SCIE Scopus
期刊论文 | 2022 , 540 | Desalination
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Abstract :

Low density and dielectric constant along with low viscosity and high diffusivity make supercritical water (SCW) an admirable reaction medium for some technologies, such as supercritical water oxidation and supercritical water gasification. However, polar inorganic salts and other ionic compounds are difficult to dissolve in supercritical water, so leading to crystallization and deposition problems to limit the scale-up of the processes above. Therefore, to further promote the development of SCW-related technologies, the crystallization and deposition characteristics and mechanisms of inorganic salts in SCW require more attention. This work comprehensively reviews the solubility data and prediction models of inorganic salts in SCW, deeply analyzes the interaction of different salts in multi-component water-salt systems, and summarizes the simulation studies related to micro nucleation crystallization and macro deposition. To realize the commercialization of SCW-related technology, it is of great significance to study the phase behavior, crystallization and deposition characteristics and mechanisms of multi-component water-salt systems. © 2022 Elsevier B.V.

Keyword :

Deposition Salts Solubility

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GB/T 7714 Yang, Wanpeng , Xu, Donghai , Jiang, Guanyu et al. Inorganic salts crystallization and deposition characteristics and mechanisms in supercritical water [J]. | Desalination , 2022 , 540 .
MLA Yang, Wanpeng et al. "Inorganic salts crystallization and deposition characteristics and mechanisms in supercritical water" . | Desalination 540 (2022) .
APA Yang, Wanpeng , Xu, Donghai , Jiang, Guanyu , Jing, Zefeng , Guo, Yang , Wang, Shuzhong et al. Inorganic salts crystallization and deposition characteristics and mechanisms in supercritical water . | Desalination , 2022 , 540 .
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Review: Hydrothermal treatment of per- and polyfluoroalkyl substances (PFAS) EI Scopus
期刊论文 | 2022 , 307 | Chemosphere
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Per: and polyfluoroalkyl substances (PFAS) are a concerning and unique class of environmentally persistent contaminants with biotoxic effects. Decades of PFAS discharge into water and soil resulted in PFAS bioaccumulation in plants, animals, and humans. PFAS are very stable, and their treatment has become a global environmental challenge. Significant efforts have been made to achieve efficient and complete PFAS mineralization using existing and emerging technologies. Hydrothermal treatments in subcritical and supercritical water have emerged as promising end-of-life PFAS destruction technologies, attracting the attention of scholars, industry, and key stakeholders. This paper reviews the state-of-the-art research on the behavior of PFAS, PFAS precursors, PFAS alternatives, and PFAS-containing waste in hydrothermal processes, including the destruction and defluorination efficiency, the proposed reaction mechanisms, and the environmental impact of these treatments. Scientific literature shows that >99% degradation and >60% defluorination of PFAS can be achieved through subcritical and supercritical water processing. The limitations of current research are evaluated, special considerations are given to the challenges of technology maturation and scale-up from laboratory studies to large-scale industrial application, and potential future technological developments are proposed. © 2022 Elsevier Ltd

Keyword :

Behavioral research Biochemistry Degradation Efficiency Environmental impact Industrial research Water treatment

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GB/T 7714 Li, Jianna , Pinkard, Brian R , Wang, Shuzhong et al. Review: Hydrothermal treatment of per- and polyfluoroalkyl substances (PFAS) [J]. | Chemosphere , 2022 , 307 .
MLA Li, Jianna et al. "Review: Hydrothermal treatment of per- and polyfluoroalkyl substances (PFAS)" . | Chemosphere 307 (2022) .
APA Li, Jianna , Pinkard, Brian R , Wang, Shuzhong , Novosselov, Igor V . Review: Hydrothermal treatment of per- and polyfluoroalkyl substances (PFAS) . | Chemosphere , 2022 , 307 .
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From modification to mechanism: Supercritical hydrothermal synthesis of nano-zirconia
期刊论文 | 2022 , 48 (4) | Ceramics International
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Nano-zirconia has been widely applied due to its excellent physical and chemical properties (e.g., high strength, corrosion resistance, oxygen ion conductivity). Existing preparation methods of nano-zirconia tend to require long reaction time, and the sizes of final particles are large with uneven d...

Keyword :

Commercialization Influencing parameters In-situ modification Nano-zirconia Phase transformation Supercritical hydrothermal synthesis

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GB/T 7714 Liu Lu , Wang Shuzhong , Zhang Baoquan et al. From modification to mechanism: Supercritical hydrothermal synthesis of nano-zirconia [J]. | Ceramics International , 2022 , 48 (4) .
MLA Liu Lu et al. "From modification to mechanism: Supercritical hydrothermal synthesis of nano-zirconia" . | Ceramics International 48 . 4 (2022) .
APA Liu Lu , Wang Shuzhong , Zhang Baoquan , Jiang Guanyu , Yang Jianqiao , Li Yanhui et al. From modification to mechanism: Supercritical hydrothermal synthesis of nano-zirconia . | Ceramics International , 2022 , 48 (4) .
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Non-uniform heat transfer behavior of wet foam fluid in a narrow fracture channel EI SCIE Scopus
期刊论文 | 2022 , 134 | EXPERIMENTAL THERMAL AND FLUID SCIENCE
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The heat transfer characteristic of wet foam fluid in some channels has not been fully understood due to its special evolution characteristic. In this study, we explore distribution laws for the temperature and the heat transfer coefficient of the VES-CO2 foam fluid on the heating surface of a narrow fracture channel. The results show that the heat transfer coefficient of foam fluid on the heating surface is affected by multiple factors, such as the foam quality, foam structure, inclined channel and so on. We find that the temperature on the middle part of the heating surface is higher. Especially, due to the drainage of the flowing wet foam, there are different heat transfer characteristics in the middle and at the side of the heating surface. The heat transfer coefficient displays fluctuation behavior at the side of the heating surface. In the inclined channel, the heat transfer coefficient increases with the inclination angle for the positive inclination, and for the lateral inclination, the average crosssectional heat transfer coefficient decreases with increasing inclination angle. In the low-permeability oil and gas development, this research has important significance for understanding the heat transfer phenomenon of wet foam fluid in formation fracture. It is also expected that this study could provide a reference for related application of wet foam fluid in some special channels.

Keyword :

Foam fluid Foam structure Heat transfer Narrow channel

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GB/T 7714 Jing, Zefeng , Feng, Chenchen , Ma, Xurui et al. Non-uniform heat transfer behavior of wet foam fluid in a narrow fracture channel [J]. | EXPERIMENTAL THERMAL AND FLUID SCIENCE , 2022 , 134 .
MLA Jing, Zefeng et al. "Non-uniform heat transfer behavior of wet foam fluid in a narrow fracture channel" . | EXPERIMENTAL THERMAL AND FLUID SCIENCE 134 (2022) .
APA Jing, Zefeng , Feng, Chenchen , Ma, Xurui , Qiao, Mingzheng , Wang, Huaijiu , Wang, Shuzhong . Non-uniform heat transfer behavior of wet foam fluid in a narrow fracture channel . | EXPERIMENTAL THERMAL AND FLUID SCIENCE , 2022 , 134 .
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Continuous supercritical hydrothermal combustion experimental and burner structure optimization simulation study EI Scopus SCIE
期刊论文 | 2022 , 188 , 69-80 | Chemical Engineering Research and Design
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Supercritical hydrothermal combustion is the rapid exothermic oxidation reaction occurring in supercritical water, which can be utilized in the treatment of high-concentration organic wastewaters. In this study, preliminary ignition experiments of continuous hydrothermal combustion are conducted. It is found that using hydrogen peroxide as oxidant can decrease the ignition temperature, but recirculation zone cannot be established due to the increase in the momentum ratio between oxidant and fuel. Furthermore, the coaxial-jet and jet-in-crossflow combustors are simulated to investigate the effect of geometry on the flame characteristics. For the coaxial-jet configuration, the moderate increase in recirculation zone can improve the flame stability, and the optimized Craya-Curtet number is around 0.17. For the jet-in-crossflow configuration, the oxygen-rich recirculation zone is more liable to accumulate heat than the fuel-rich one, and hence it does more favors for the flame stability. A new jet-in-crossflow combustor with oxygen as the core jet is proposed and demonstrates to be able to decrease the extinction temperature by ∼100 K lower than the existing devices. © 2022 Institution of Chemical Engineers

Keyword :

Combustors Ignition Oxidants Oxygen Thermodynamic stability Wastewater treatment

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GB/T 7714 Zhang, Jie , Ren, Mengmeng , Li, Yanhui et al. Continuous supercritical hydrothermal combustion experimental and burner structure optimization simulation study [J]. | Chemical Engineering Research and Design , 2022 , 188 : 69-80 .
MLA Zhang, Jie et al. "Continuous supercritical hydrothermal combustion experimental and burner structure optimization simulation study" . | Chemical Engineering Research and Design 188 (2022) : 69-80 .
APA Zhang, Jie , Ren, Mengmeng , Li, Yanhui , Li, Hulin , Wang, Shuzhong . Continuous supercritical hydrothermal combustion experimental and burner structure optimization simulation study . | Chemical Engineering Research and Design , 2022 , 188 , 69-80 .
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中国制造业碳排放问题分析与减排对策建议
期刊论文 | 2022 , 41 (03) , 1645-1653 | 化工进展
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如何同时实现全面建设社会主义现代化国家和2060年达到碳中和的目标,是制造业未来发展所面对的必答考题。推动高耗能、高排放的制造业转向“绿色制造”是实现碳达峰、碳中和的关键一步。本文从核算方法、宏观指标、行业分布、能源结构对制造业碳排放现状进行总结与分析,进而对制造业的通用型碳减排对策和重点行业的低碳工艺进行介绍,并列举了相关商业应用、阐释了技术发展瓶颈。文中指出:制造业减排通用对策包括源头减量,使用清洁能源,碳捕集、利用与封存,工业互联网;重点行业低碳生产工艺主要有氢气直接还原生产钢铁、二氧化碳加氢制甲醇、生物质制生物油等;钢铁、化工、建材、石化及炼焦、有色金属冶炼作为制造业的重要行业,应当选...

Keyword :

二氧化碳 二氧化碳捕集 再生能源 整体优化 制造

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GB/T 7714 张凡 , 王树众 , 李艳辉 et al. 中国制造业碳排放问题分析与减排对策建议 [J]. | 化工进展 , 2022 , 41 (03) : 1645-1653 .
MLA 张凡 et al. "中国制造业碳排放问题分析与减排对策建议" . | 化工进展 41 . 03 (2022) : 1645-1653 .
APA 张凡 , 王树众 , 李艳辉 , 杨健乔 , 孙圣瀚 . 中国制造业碳排放问题分析与减排对策建议 . | 化工进展 , 2022 , 41 (03) , 1645-1653 .
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Supercritical hydrothermal synthesis of nano-zinc oxide: Process and mechanism
期刊论文 | 2022 , 48 (16) | Ceramics International
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Nano-zinc oxide is a type of multifunctional inorganic material, which had been extensively used due to the excellent properties such as piezoelectricity, sterilization, and UV shielding. The methods used for preparing nano-zinc oxides include precipitation, low-temperature hydrothermal, sol-gel, sp...

Keyword :

Doping technology Mechanism Nano-zinc oxide Supercritical hydrothermal synthesis Surface modifier

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GB/T 7714 Liu Wei , Wang Shuzhong , Wang Jinlong et al. Supercritical hydrothermal synthesis of nano-zinc oxide: Process and mechanism [J]. | Ceramics International , 2022 , 48 (16) .
MLA Liu Wei et al. "Supercritical hydrothermal synthesis of nano-zinc oxide: Process and mechanism" . | Ceramics International 48 . 16 (2022) .
APA Liu Wei , Wang Shuzhong , Wang Jinlong , Zhang Baoquan , Liu Lu , Liu Hui et al. Supercritical hydrothermal synthesis of nano-zinc oxide: Process and mechanism . | Ceramics International , 2022 , 48 (16) .
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