한국지열·수열에너지학회논문집 (Journal of the Korean Society for Geothermal and Hydrothermal Energy)

  • 제18권4호
  • /
  • Pages.12-21
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  • 2022
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  • 2799-4783(pISSN)
  • /
  • 2799-4805(eISSN)
한국지열·수열에너지학회 (Korean Society for Geothermal and Hydrothermal Energy)
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지하자원개발을 위한 오일샌드플랜트의 DCSG 증기생산효율 평가에 관한 연구

A Study on the Evaluation of DCSG Steam Efficiency of Oil Sand Plants for Underground Resources Development

  • 김영배 (고등기술연구원 플랜트공정개발센터) ;
  • 정기진 (고등기술연구원 플랜트공정개발센터) ;
  • 정우현 (고등기술연구원 플랜트공정개발센터) ;
  • 정석우 (고등기술연구원 플랜트공정개발센터)
  • Young Bae Kim (Plant Process Development Center, Institute for Advanced Engineering) ;
  • Kijin Jeong (Plant Process Development Center, Institute for Advanced Engineering) ;
  • Woohyun Jung (Plant Process Development Center, Institute for Advanced Engineering) ;
  • Seok Woo Chung (Plant Process Development Center, Institute for Advanced Engineering)
  • 투고 : 2022.09.26
  • 심사 : 2022.11.15
  • 발행 : 2022.12.01
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초록

Steam assisted gravity drainage(SAGD) is a process that drills well in the underground oil sands layer, injects hightemperature steam, lowers the viscosity of buried bitumen, and recovers it to the ground. Recently, direct contact steam generator(DCSG) is being developed to maximize steam efficiency for SAGD process. The DCSG requires high technology to achieve pressurized combustion and steam generation in accordance with underground pressurized conditions. Therefore, it is necessary to develop a combustion technology that can control the heat load and exhaust gas composition. In this study, process analysis of high-pressurized DCSG was conducted to apply oxygen enrichment technology in which nitrogen of the air was partially removed for increasing steam production and reducing fuel consumption. As the process analysis conditions, methane as the fuel and normal air or oxygen enriched air as the oxidizing agent were applied to high-pressurized DCSG process model. A simple combustion reaction program was used to calculate the property variations for combustion temperature, steam ratio and residual heat in exhaust gas. As a major results, the steam production efficiency of DCSG using the pure oxygen was about 6% higher than that of the normal air due to the reducing nitrogen in the air. The results of this study will be used as operating data to test the demonstration device.

키워드

과제정보

본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었음(과제번호 RS-2022-00143541).

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