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A novel methodology to construct compartment models for a circulating fluidized bed riser. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Zhong H, Chen J, Gao F, Zhang J, Zhu Y, Niu B. 3D virtual full-loop CFD simulation of industrial two-stage FCC reaction–regeneration system. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2022. [DOI: 10.1515/ijcre-2021-0249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The 3D virtual full-loop CFD simulation method with two-fluid model (TFM) was developed to model an industrial two-stage FCC reaction–regeneration system. The virtual connections (mass, species, and energy) between riser reactors, disengager, stripper, and regenerator were realized by defining user-defined functions (UDFs) for boundary conditions according to the reality. Five correction factors were used to correct the reaction rates in the 14-lump FCC reaction kinetics, and two correction factors were used to correct the FCC reaction heat in the first and second riser reactors. As a result, the whole FCC reaction–regeneration system was successfully modeled in one single CFD case. A thorough and comprehensive view of the performance of reaction–regeneration system was obtained by the 3D virtual full-loop CFD simulation, which is helpful for the operating and optimization of FCC unit. The major predicted results were in a good agreement with the industrial data. The effects of operating conditions were also investigated by changing regenerated temperature, catalyst to oil (CTO) ratio, and process capacity.
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Affiliation(s)
- Hanbin Zhong
- Engineering Research Center of Low Carbon Energy & Chemical, College of Chemistry and Chemical Engineering, Xi’an Shiyou University , Xi’an , Shaanxi , 710065 , China
| | - Jing Chen
- Petrochemical Research Institute of PetroChina , Beijing , 102206 , China
| | - Fei Gao
- Petrochemical Research Institute of PetroChina , Beijing , 102206 , China
| | - Juntao Zhang
- Engineering Research Center of Low Carbon Energy & Chemical, College of Chemistry and Chemical Engineering, Xi’an Shiyou University , Xi’an , Shaanxi , 710065 , China
| | - Yuqin Zhu
- Engineering Research Center of Low Carbon Energy & Chemical, College of Chemistry and Chemical Engineering, Xi’an Shiyou University , Xi’an , Shaanxi , 710065 , China
| | - Ben Niu
- Engineering Research Center of Low Carbon Energy & Chemical, College of Chemistry and Chemical Engineering, Xi’an Shiyou University , Xi’an , Shaanxi , 710065 , China
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Revisiting a large-scale FCC riser reactor with a particle-scale model. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2021.117300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Hu G, Li T, Long J, Du W, Qian F. Numerical Simulation of the Gas-Solid Two-Phase Flow-Reaction Process in a Maximizing Isoparaffin Process Reactor. ACS OMEGA 2020; 5:29043-29054. [PMID: 33553859 PMCID: PMC7857270 DOI: 10.1021/acsomega.0c03525] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/05/2020] [Indexed: 06/12/2023]
Abstract
The process of the fluid catalytic cracking (FCC) is accompanied by complex physical and chemical reactions and phase transition processes. For the FCC process-maximizing isoparaffin process (MIP), coupled simulation and optimization of flow reaction can meet the requirements for the design and operation of high efficiency, low energy consumption, low pollution, and low cost in the catalytic device. A combination of Eulerian-Eulerian model and 11-lump kinetic model is adopted to simulate the flow-reaction process of gas-solid two-phase of an industrial MIP riser reactor. A drag model based on the energy-minimization multiscale model established by Yang is incorporated into FLUENT through a user-defined function (UDF). The temperature distribution of the catalyst and the concentration of each product component at the outlet are in good agreement with the industrial measured data, which indicates that the established coupling model of flow reaction and drag model are reliable and effective. The two operating variables of the catalyst-to-oil ratio and catalyst inlet temperature are explored their effects on the flow-reaction process of FCC gas-solid two-phase. In the prelifting zone, the velocity of catalyst particles presents parabolic distribution. In the first reaction zone, the maximum velocity of catalyst particles is about 1/2 of the radius of the riser. In the second reaction zone, the maximum particle velocity of catalyst is located in the central region, with a slight increase in about 1/2 of the radius of the riser. The increase in catalyst-to-oil ratio leads to the decrease in the yield of diesel oil and the increase in yields of gasoline, liquefied petroleum gas, propylene, and dry gas. The changes in the catalyst inlet temperature affect the product distribution of the outlet component, which can provide an important guiding significance.
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Zhou X, Yan H, Feng X, Zhao H, Liu Y, Chen X, Yang C. Enhancing the Conversion of Polycyclic Aromatic Hydrocarbons from Naphthenic Heavy Oil: Novel Process Design, Comparative Techno-Economic Analysis, and Life Cycle Assessment. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03198] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xin Zhou
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, People’s Republic of China
| | - Hao Yan
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, People’s Republic of China
| | - Xiang Feng
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, People’s Republic of China
| | - Hui Zhao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, People’s Republic of China
| | - Yibin Liu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, People’s Republic of China
| | - Xiaobo Chen
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, People’s Republic of China
| | - Chaohe Yang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, People’s Republic of China
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Jourdan N, Neveux T, Potier O, Kanniche M, Wicks J, Nopens I, Rehman U, Le Moullec Y. Compartmental Modelling in chemical engineering: A critical review. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.115196] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Lee Y, Jeon K, Cho J, Na J, Park J, Jung I, Park J, Park MJ, Lee WB. Multicompartment Model of an Ethylene–Vinyl Acetate Autoclave Reactor: A Combined Computational Fluid Dynamics and Polymerization Kinetics Model. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03044] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yongkyu Lee
- Department of Chemical & Biological Engineering, Seoul National University, Seoul 08826, South Korea
| | - Kyeongwoo Jeon
- Department of Chemical & Biological Engineering, Seoul National University, Seoul 08826, South Korea
| | - Jiyeong Cho
- Department of Chemical & Biological Engineering, Seoul National University, Seoul 08826, South Korea
| | - Jonggeol Na
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 136-791, South Korea
| | - Jongmin Park
- Department of Chemical & Biological Engineering, Seoul National University, Seoul 08826, South Korea
| | - Ikhwan Jung
- Research & Development Institute, Hanwha Chemical Corporation, Seoul 04541, South Korea
| | - Jehun Park
- Research & Development Institute, Hanwha Chemical Corporation, Seoul 04541, South Korea
| | - Myung June Park
- Department of Chemical Engineering, Ajou University, Seoul 16499, South Korea
| | - Won Bo Lee
- Department of Chemical & Biological Engineering, Seoul National University, Seoul 08826, South Korea
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Zhou X, Zhao H, Feng X, Chen X, Yang C. Hydrogenation and TMP Coupling Process: Novel Process Design, Techno-Economic Analysis, Environmental Assessment and Thermo-Economic Optimization. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01681] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xin Zhou
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, People’s Republic of China
| | - Hui Zhao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, People’s Republic of China
| | - Xiang Feng
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, People’s Republic of China
| | - Xiaobo Chen
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, People’s Republic of China
| | - Chaohe Yang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao, Shandong 266580, People’s Republic of China
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