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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.1
- 수록면
- 263 - 274 (12page)
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이 논문의 연구 히스토리 (4)
2020
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The wet flue gas desulfurization process, which added the mixing process, was simulated to predict the quality ofgypsum, considering a low-grade limestone and waste oyster shell. High-grade limestone with more than 94 wt% CaCO3content is used for producing the gypsum with 93 wt% purity that is available for sale. However, low-grade limestonealso needs to be used because of resource depletion. Low-grade limestone might not be used because it contains manyimpurities that reduce the quality of the gypsum; however, it can be used in a mixture with oyster shell. For processmodeling, low-grade limestone and oyster shell were mixed through a mixer model and entered the reactor model. Thedissolution reaction of CaCO3, the absorption of SOx, and the crystallization of gypsum were considered in two stagesusing an equilibrium reactor. Thermodynamic models used the NRTL model for the gas-liquid equilibrium and the van't Hoffsolubility method for the solid-liquid equilibrium. For process optimization, the following constraints were set: 93% purityof gypsum, 94% desulfurization efficiency, and 3,710 kg/h in total absorbent usage, and the objective function was setto maximize the mass flow of oyster shell. The maximum blending quantity of low-grade limestone for 2,275 kg/h inwaste oyster shell that satisfied the constraints was ~ 1,435 kg. For the economic analysis, the total capital investment (TCI)increased to KRW 545,690,970, but the annual operation and maintenance (O&M) cost decreased to KRW 122,270,721,allowing the payback time to be estimated at approximately 4.5 years.
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참고문헌 (24)
참고문헌 신청
Cheng, G. / 2018 / Desulfurization and denitrification technologies of coal-fired flue gas / Polish Journal of Environmental Studies 27(2):481~489
Seames, W. S. / 2003 / An initial study of the fine fragmentation fly ash particle mode gener-ated during pulverized coal combustion / Fuel Processing Technology 81(2):109~125
Ma, X. / 2000 / Use of limestone for SO2 removal from flue gas in the semidry FGD process with a powder-particle spouted bed / Chemical Engineering Science 55(20):464~4652
Gutiérrez Ortiz, F. J. / 2006 / Pilot-plant technical assessment of wet flue gas desulfurization using limestone / Industrial & Engineering Chemistry Research 45(4):1466~1477
Zhao, B. / 2009 / Simulation of mercury capture by sorbent injection using a simplified model / Journal of Hazardous Materials 170(2):1179~1185
Seames, W. S. / 2003 / An initial study of the fine fragmentation fly ash particle mode gener-ated during pulverized coal combustion / Fuel Processing Technology 81(2):109~125
Ma, X. / 2000 / Use of limestone for SO2 removal from flue gas in the semidry FGD process with a powder-particle spouted bed / Chemical Engineering Science 55(20):464~4652
Gutiérrez Ortiz, F. J. / 2006 / Pilot-plant technical assessment of wet flue gas desulfurization using limestone / Industrial & Engineering Chemistry Research 45(4):1466~1477
Zhao, B. / 2009 / Simulation of mercury capture by sorbent injection using a simplified model / Journal of Hazardous Materials 170(2):1179~1185
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