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Feng P, Yang W, Xu D, Ma M, Guo Y, Jing Z. Characteristics, mechanisms and measurement methods of dissolution and deposition of inorganic salts in sub-/supercritical water. WATER RESEARCH 2022; 225:119167. [PMID: 36183545 DOI: 10.1016/j.watres.2022.119167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/20/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
The efficient and harmless treatment of hypersaline organic wastes has become an urgent environmental problem. Compared to traditional thermochemical methods, supercritical water oxidation has been proven to be an efficient organic waste treatment technology due to the advantages of low cost, high degradation rate, no secondary pollutants, etc. However, the solubilities of inorganic salts drop rapidly near the critical point of water, and some sticky salts form easily agglomerates and then adhere to internal surfaces of reactor and pipeline, causing plugging and inhibition of heat transfer. Hence, the characteristics, mechanisms and measurement methods of the dissolution and deposition of inorganic salts in sub-/supercritical water are summarized and analyzed systematically and comprehensively in this work, intending to provide a valuable guide for salt deposition prevention and subsequent research directions. Firstly, a new classification form of inorganic salt is put forward based on melting point. The phase equilibriums of brine systems are then analyzed in detail. Six theories concerning dissolution mechanisms are discussed deeply and various measurement methods of salt solubility are also supplemented. Furthermore, salt deposition characteristics and related measurement technologies are summarized. Notably, a new idea "hydrothermal molten salt" system is reviewed which may provide a solution for salt deposition in sub/supercritical water. Finally, an outlook for the follow-up researches is prospected and some suggestions are proposed.
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Affiliation(s)
- Peng Feng
- Key Laboratory of Thermo-Fluid Science & Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Wanpeng Yang
- Key Laboratory of Thermo-Fluid Science & Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Donghai Xu
- Key Laboratory of Thermo-Fluid Science & Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
| | - Mingyan Ma
- Key Laboratory of Thermo-Fluid Science & Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Yang Guo
- Key Laboratory of Thermo-Fluid Science & Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Zefeng Jing
- Key Laboratory of Thermo-Fluid Science & Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
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Ren Y, Meng X, Wu Z, Ou G, Jin H, Ge Z, Xu Q, Guo L. Visualization of the flow morphology of submerged jets in subcritical and supercritical water. J Supercrit Fluids 2021. [DOI: 10.1016/j.supflu.2021.105346] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Shoji E, Kikuchi T, Yamagiwa K, Kubo M, Tsukada T, Takami S, Sugimoto K, Ito D, Saito Y. In-situ visualization of heavy oil behavior in supercritical water using neutron radiography. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115816] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Shoji E, Yamagiwa K, Kubo M, Tsukada T, Takami S, Sugimoto K, Ito D, Saito Y, Teratani S. Flow visualization of heavy oil in a packed bed using real-time neutron radiography. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2018.11.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sugioka KI, Ozawa K, Tsukada T, Takami S, Adschiri T, Sugimoto K, Takenaka N, Saito Y. Neutron radiography and numerical simulation of mixing behavior in a reactor for supercritical hydrothermal synthesis. AIChE J 2013. [DOI: 10.1002/aic.14313] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ken-ichi Sugioka
- Dept. of Chemical Engineering; Tohoku University; 6-6-07 Aramaki Aoba-ku Sendai 980-8579 Japan
| | - Kyohei Ozawa
- Dept. of Chemical Engineering; Tohoku University; 6-6-07 Aramaki Aoba-ku Sendai 980-8579 Japan
| | - Takao Tsukada
- Dept. of Chemical Engineering; Tohoku University; 6-6-07 Aramaki Aoba-ku Sendai 980-8579 Japan
| | - Seiichi Takami
- Institute of Multidisciplinary Research for Advanced Materials; Tohoku University; 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan
| | - Tadafumi Adschiri
- Institute of Multidisciplinary Research for Advanced Materials; Tohoku University; 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan
- WPI Advanced Institute for Materials Research; Tohoku University; 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan
| | - Katsumi Sugimoto
- Dept. of Mechanical Engineering; Kobe University; 1-1 Rokkodai, Nada Kobe 657-8501 Japan
| | - Nobuyuki Takenaka
- Dept. of Mechanical Engineering; Kobe University; 1-1 Rokkodai, Nada Kobe 657-8501 Japan
| | - Yasushi Saito
- Research Reactor Institute; Kyoto University; 2 Asashiro-Nishi, Kumatori-cho Sennan-gun Osaka 590-0494 Japan
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Reimer J, Vogel F. High pressure differential scanning calorimetry of the hydrothermal salt solutions K2SO4–Na2SO4–H2O and K2HPO4–H2O. RSC Adv 2013. [DOI: 10.1039/c3ra43725f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Neutron radiography on tubular flow reactor for hydrothermal synthesis: In situ monitoring of mixing behavior of supercritical water and room-temperature water. J Supercrit Fluids 2012. [DOI: 10.1016/j.supflu.2011.11.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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