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Analysis for DME FPSO Storage Tank and Experimental Study on the DME Evaporation Rate by Rolling Motion of Ship

DME FPSO선박의 탱크해석 및 Rolling 유동에 따른 증발 실험연구

  • 윤상국 (한국해양대학교 기계.에너지시스템공학부) ;
  • 조원준 (한국가스공사 DME연구개발구룹) ;
  • 백영순 (한국가스공사 DME연구개발구룹)
  • Received : 2012.08.10
  • Accepted : 2012.11.02
  • Published : 2012.11.30

Abstract

DME(Dimethyl ether) is the one of the massive energy sources synthesized from natural gas. KOGAS has already developed the commercial-scale production plant of DME and has been doing to obtain overseas resources to meet the domestic needs. This paper presents the DME storage tank design criteria by stress and strain analysis, and the experimental study on the evaporation phenomena of DME by thermal intake and physical rolling movement of DME FPSO or cargo vessel, because the various moving motions along with heat intake cause the evaporation of low temperature liquid. The experimental result shows that the evaporation rate was increased with larger rolling degree and higher liquid level. The rolling motion leads to evaporate about 20% increase with 15 degree rolling based on the evaporation quantity without rolling.

DME는 천연가스로부터 합성할 수 있는 대량의 에너지원이 된다. 한국가스공사는 DME 상업규모의 생산플랜트를 개발하고 이의 국내 공급을 위해 해외 자원 확보를 추진하고 있다. 본 논문은 응력과 변형 해석을 통하여 DME저장탱크의 설계기준을 제공하였고, DME FPSO저장탱크의 증발현상을 파악하기 위하의 증발을 발생시키는 원인인 열유입과 선박의 유동에 따른 증발량 실험을 수행하였다. 실험결과, 롤링의 각도가 커지고 액체 충전량이 많을수록 증발량이 증가하였다. 롤링각도가 15도 일 때의 증발량은 정지상태의 열유입 만에 의한 증발량 보다 약 20%가 증가하였다.

Keywords

References

  1. Y.-G. Mo and W.-J. Cho et al., "The Study of KOGAS DME process in small and medium sized gas field containing $CO_2$", Journal of the Korean Institute of Gas, vol. 14, no. 4, pp. 51-55, 2010 (in Korean).
  2. Y.-G. Mo, W.-J. Cho, et al., "Development of direct synthesis process", Journal of the Korean Institute of Gas, vol. 14, no. 4, pp. 41-45, 2010.
  3. Y.-S. Baek, S.-E. Park et al., "DME Production from LNG gas", Transactions of the Korean Society of Automobile Engineering, vol. 25, no. 4, pp. 38-43, 2003 (in Korean).
  4. S.-O. Song, J.-H. Lee, et al., "A study on the three-dimensional steady state temperature distributions and BOR calculation program deveolpment for the membrane type LNG carrier", Journal of Korean Society of Marine Engineering, vol. 33, no. 5, pp. 637-645, 2009 (in Korean).
  5. Y.-M. Kim, S.-C. Ko et al., "A study on the thermal design of the cryogenic LNG carrier", Journal of Korean Society of Marine Engineering, vol. 17, no. 3, pp. 227-236, 1993.