1
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Li C, Zhang H, Liu W, Sheng L, Cheng MJ, Xu B, Luo G, Lu Q. Efficient conversion of propane in a microchannel reactor at ambient conditions. Nat Commun 2024; 15:884. [PMID: 38287034 PMCID: PMC10825187 DOI: 10.1038/s41467-024-45179-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 01/17/2024] [Indexed: 01/31/2024] Open
Abstract
The oxidative dehydrogenation of propane, primarily sourced from shale gas, holds promise in meeting the surging global demand for propylene. However, this process necessitates high operating temperatures, which amplifies safety concerns in its application due to the use of mixed propane and oxygen. Moreover, these elevated temperatures may heighten the risk of overoxidation, leading to carbon dioxide formation. Here we introduce a microchannel reaction system designed for the oxidative dehydrogenation of propane within an aqueous environment, enabling highly selective and active propylene production at room temperature and ambient pressure with mitigated safety risks. A propylene selectivity of over 92% and production rate of 19.57 mmol mCu-2 h-1 are simultaneously achieved. This exceptional performance stems from the in situ creation of a highly active, oxygen-containing Cu catalytic surface for propane activation, and the enhanced propane transfer via an enlarged gas-liquid interfacial area and a reduced diffusion path by establishing a gas-liquid Taylor flow using a custom-made T-junction microdevice. This microchannel reaction system offers an appealing approach to accelerate gas-liquid-solid reactions limited by the solubility of gaseous reactant.
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Affiliation(s)
- Chunsong Li
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Haochen Zhang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Wenxuan Liu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Lin Sheng
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Mu-Jeng Cheng
- Department of Chemistry, National Cheng Kung University, Tainan, Taiwan
| | - Bingjun Xu
- College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Guangsheng Luo
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, China.
| | - Qi Lu
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, China.
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2
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Chang Y, Sheng L, Wang J, Deng J, Luo G. A general neural network model co-driven by mechanism and data for the reliable design of gas-liquid T-junction microdevices. LAB ON A CHIP 2023; 23:4888-4900. [PMID: 37873702 DOI: 10.1039/d3lc00355h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
In recent years, many models have been developed to describe the gas-liquid microdispersion process, which mainly rely on mechanistic analysis and may not be universally applicable. In order to provide a more comprehensive model and, most significantly, to provide a model for design, we have established a general database of microbubble generation in T-junction microdevices, including 854 data points from 12 pieces of literature. A neural network model that combines mechanistic and data modeling is developed. By transfer learning, more accurate results can be obtained. Additionally, we have proposed a design method that enables a relative deviation of less than 5% from the expected bubble size. A new device was designed and prepared to confirm the reliability of the method, which can prepare smaller bubbles than other common T-junction devices. In this way, a general and universal database and model are established and a design method for a gas-liquid T-junction microreactor is developed.
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Affiliation(s)
- Yu Chang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China.
| | - Lin Sheng
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China.
| | - Junjie Wang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China.
| | - Jian Deng
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China.
| | - Guangsheng Luo
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China.
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3
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Surfactant effect on mass transfer characteristics in the generation and flow stages of gas–liquid Taylor flow in a microchannel. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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Wang M, Xia H, Zhu L, Zhang Y. Regulating the Gas–Liquid Slug Flow in Microchannels through High-Frequency Pulsatile Perturbations. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c03550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Meng Wang
- School of Mechanical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing210094, Jiangsu, P. R. China
| | - Huanming Xia
- School of Mechanical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing210094, Jiangsu, P. R. China
| | - Li Zhu
- School of Mechanical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing210094, Jiangsu, P. R. China
| | - Yanyin Zhang
- School of Mechanical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing210094, Jiangsu, P. R. China
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Wang J, Song J, Sheng L, Deng J, Luo G. Microdispersion of Gas or Water in an Anthraquinone Working Solution for the H 2O 2 Synthesis Process Intensification. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c04503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Junjie Wang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing100084, China
| | - Jing Song
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing100084, China
| | - Lin Sheng
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing100084, China
| | - Jian Deng
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing100084, China
| | - Guangsheng Luo
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing100084, China
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Sheng L, Li S, Wang K, Chang Y, Deng J, Luo G. Gas–Liquid Microfluidics: Transition Hysteresis Behavior between Parallel Flow and Taylor Flow. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Lin Sheng
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Shaowei Li
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Tsinghua University, Beijing 102201, China
| | - Kai Wang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Yu Chang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Jian Deng
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Guangsheng Luo
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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Wang Z, Ding W, Fan Y, Wang J, Chen J, Wang H. Design of Improved Flow-Focusing Microchannel with Constricted Continuous Phase Inlet and Study of Fluid Flow Characteristics. MICROMACHINES 2022; 13:1776. [PMID: 36296129 PMCID: PMC9609089 DOI: 10.3390/mi13101776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/07/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
This paper proposed an improved flow-focusing microchannel with a constricted continuous phase inlet to increase microbubble generation frequency and reduce microbubbles' diameter. The design variables were obtained by Latin hypercube sampling, and the radial basis function (RBF) surrogate model was used to establish the relationship between the objective function (microbubble diameter and generation frequency) and the design variables. Moreover, the optimized design of the nondominated sorting genetic algorithm II (NSGA-II) algorithm was carried out. Finally, the optimization results were verified by numerical simulations and compared with those of traditional microchannels. The results showed that dripping and squeezing regimes existed in the two microchannels. The constricted continuous phase inlet enhanced the flow-focusing effect of the improved microchannel. The diameter of microbubbles obtained from the improved microchannel was reduced from 2.8141 to 1.6949 μm, and the generation frequency was increased from 64.077 to 175.438 kHz at the same capillary numbers (Ca) compared with the traditional microchannel. According to the fitted linear function, it is known that the slope of decreasing microbubble diameter with increasing Ca number and the slope of increasing generation frequency with increasing Ca number are greater in the improved microchannel compared with those in the traditional microchannel.
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Affiliation(s)
- Zhaohui Wang
- Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Weibing Ding
- Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Yiwei Fan
- Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Jian Wang
- Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Jie Chen
- The State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China
| | - Hongxia Wang
- College of Mechanical Engineering, Hubei University of Automotive Technology, Shiyan 442002, China
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Mechanism and modeling of Taylor bubble generation in viscous liquids via the vertical squeezing route. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117763] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Song J, Sheng L, Cui Y, Wang S, Wang Y, Deng J, Luo G. Liquid-liquid colliding micro-dispersion and general scaling laws in novel T-junction microdevices. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117746] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Sheng L, Chang Y, Deng J, Luo G. Hydrodynamics and Scaling Laws of Gas–Liquid Taylor Flow in Viscous Liquids in a Microchannel. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lin Sheng
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Yu Chang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Jian Deng
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Guangsheng Luo
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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Sheng L, Chen Y, Deng J, Luo G. Ideality analysis and general laws of bubble swarm microflow for large-scale gas-liquid microreaction processes. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.04.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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12
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Wang X, Liu Y, Liu D, Ge X, Li L, Qiu T. Droplet breakup in the square microchannel with a short square constriction to generate slug flow. AIChE J 2022. [DOI: 10.1002/aic.17739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiaoda Wang
- Engineering Research Center of Reactive Distillation, Fujian Province Higher Education Institutes, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
- Qingyuan Innovation Laboratory Quanzhou Fujian China
| | - Yuanyuan Liu
- Engineering Research Center of Reactive Distillation, Fujian Province Higher Education Institutes, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
- Qingyuan Innovation Laboratory Quanzhou Fujian China
| | - Dayu Liu
- Institute of Technology of University of Paris‐Saclay Paris France
| | - Xuehui Ge
- Engineering Research Center of Reactive Distillation, Fujian Province Higher Education Institutes, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
- Qingyuan Innovation Laboratory Quanzhou Fujian China
| | - Ling Li
- Engineering Research Center of Reactive Distillation, Fujian Province Higher Education Institutes, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
- Qingyuan Innovation Laboratory Quanzhou Fujian China
| | - Ting Qiu
- Engineering Research Center of Reactive Distillation, Fujian Province Higher Education Institutes, College of Chemical Engineering Fuzhou University Fuzhou Fujian China
- Qingyuan Innovation Laboratory Quanzhou Fujian China
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Sheng L, Chang Y, Deng J, Luo G. Taylor Bubble Generation Rules in Liquids with a Higher Viscosity in a T-Junction Microchannel. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c05015] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lin Sheng
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Yu Chang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Jian Deng
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Guangsheng Luo
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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14
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Zhang J, Ling SD, Chen A, Chen Z, Ma W, Xu J. The liquid‐liquid flow dynamics and droplet formation in a modified step T‐junction Microchannel. AIChE J 2022. [DOI: 10.1002/aic.17611] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jingwei Zhang
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering Tsinghua University Beijing China
| | - Si Da Ling
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering Tsinghua University Beijing China
| | - An Chen
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering Tsinghua University Beijing China
| | - Zhuo Chen
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering Tsinghua University Beijing China
| | - Wenjun Ma
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering Tsinghua University Beijing China
| | - Jianhong Xu
- The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering Tsinghua University Beijing China
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