|
1
|
Wang X, Xiong Z, Li X, Hu Z, Wang Y, Peng B, Li J, Wei B, Luo G, Yao H. Flue Gas-Enhanced Water Leaching: AAEM Removal from Agricultural Organic Solid Waste and Fouling and Slagging Suppression during Its Combustion. ACS OMEGA 2023; 8:16241-16250. [PMID: 37179651 PMCID: PMC10173427 DOI: 10.1021/acsomega.3c00690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 04/19/2023] [Indexed: 05/15/2023]
Abstract
Alkali and alkaline earth metals (AAEMs) in agricultural organic solid waste (AOSW) contribute to the fouling and slagging during its combustion. In this study, a novel flue gas-enhanced water leaching (FG-WL) method using flue gas as the heat and CO2 source was proposed for effective AAEM removal from AOSW before combustion. The removal rate of AAEMs by FG-WL was significantly superior to that by conventional water leaching (WL) under the same pretreatment conditions. Furthermore, FG-WL also obviously reduced the release of AAEMs, S, and Cl during AOSW combustion. The ash fusion temperatures of the FG-WL-treated AOSW was higher than that of WL. The fouling and slagging tendency of AOSW greatly decreased through FG-WL treatment. Thus, FG-WL is a simple and feasible method for AAEM removal from AOSW and suppressing fouling and slagging during its combustion. Besides, it also provides a new pathway for the resource utilization of power plant flue gas.
Collapse
Affiliation(s)
- Xiangxi Wang
- State
Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Key
Laboratory of Coal Clean Conversion and Chemical Process Autonomous
Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830000, China
| | - Zhao Xiong
- State
Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xian Li
- State
Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhenzhong Hu
- State
Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yibo Wang
- State
Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
- Key
Laboratory of Coal Clean Conversion and Chemical Process Autonomous
Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830000, China
| | - Bing Peng
- State
Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jian Li
- Key
Laboratory of Coal Clean Conversion and Chemical Process Autonomous
Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830000, China
| | - Bo Wei
- Key
Laboratory of Coal Clean Conversion and Chemical Process Autonomous
Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830000, China
| | - Guangqian Luo
- State
Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hong Yao
- State
Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| |
Collapse
|