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Received August 10, 2016
Accepted October 31, 2016
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염수 전기분해와 연계한 이산화탄소의 전환 공정 연구
A Study on a Process for Conversion of Carbon Dioxide through Saline Water Electrolysis
한전 전력연구원, 34056 대전광역시 유성구 문지로 105 1PSE Kore, 35229 대전광역시 서구 대덕대로 239
KEPCO Research Institute, 105, Munji-Ro, Yuseong-gu, Daejon, 34056, Korea 1PSE Korea, 239, Daedeok-daero, Seo-gu, Daejeon, 35229, Korea
jgshim5@kepco.co.kr
Korean Chemical Engineering Research, February 2017, 55(1), 86-92(7), 10.9713/kcer.2017.55.1.86 Epub 2 February 2017
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Abstract
석탄 화력발전 연소 배가스에 포함된 이산화탄소를 염수의 전기분해를 통해 얻어진 가성소다와 반응시켜 중탄산나트륨, 염소, 수소 등을 생산하는 공정에 대하여 실험과 전산모사를 병행하였다. Bench 규모 공정을 디자인하여 가성소다에 의한 이산화탄소 전환 공정에 대하여 실험하였고 같은 공정을 공정 모델링을 통해 전산모사 하였다. 실험결과와 전산모사 결과의 비교를 통해 모델의 신뢰성을 확인하였고, 상용급 공정에 대한 모델링을 수행하였다. 상용급 공정에 대한 열 및 물질수지를 계산하였고 반응기내 온도분포와 CO2 흡수율을 도출하였다. 본 연구를 통해 온실가스 저감뿐만 아니라 CO2 전환을 통한 경제성까지 갖춘 본 공정에 대한 기술 신뢰성을 확보할 수 있을 것이다.
A process, which converts carbon dioxide contained in the flue gas of coal-fired power plants to sodium bicarbonate, was studied experimentally and numerically. In this process, the carbon dioxide reacts with sodium hydroxide which is produced through saline water electrolysis. A bench scale reactor system was prepared for experiments of this process and numerical process modeling was performed for the bench scale reactor system. Comparing the process modeling results with the experimental data, responsibility of the process modeling was confirmed. Using this model, commercial scale process was simulated. Mass and energy balance of this process were calculated. Temperature profile in the reactor and carbon dioxide removal rate were obtained.
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Lodenius M, Esa T, Bull. Environ. Contam. Toxicol., 32, 439 (1984)
Lee JH, Lee DW, Gyu JS, Kwak NS, Lee IY, Jang KR, Choi JS, Shim JG, Korean Chem. Eng. Res., 52(3), 347 (2014)
