에너지공학 (Journal of Energy Engineering)

  • 제8권4호
  • /
  • Pages.560-566
  • /
  • 1999
  • /
  • 1598-7981(pISSN)
  • /
  • 2713-7074(eISSN)
한국에너지학회 (The Korean Society for Energy)
권호 표지

PDTF를 이용한 석탄가스화 특성 실험

Pressurized Drop Tube Furnace Tests of Global Gasification Characteristics of Coal

  • 신용승 (한국과학기술원 기계공학부 열공학연구실) ;
  • 최상민 (한국과학기술원 기계공학부 열공학연구실) ;
  • 안달홍 (한전전력연구원)
  • 발행 : 1999.11.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

가압 조건하에서의 석탄가스화 특성을 규명하기위해 , 온도 압력 , 산소/석탄비, 수증기/석탄비 등을 변화시켜가며 로토탄(sub A)에 대하여 PDTF(Pressuized drop tube furnace)실험을 수행하였다. 실험결과, 상압 조건에서보다 가압조건에서의 가스화가 탄소전환율과 냉가스효율의 측면에서 더 유리한 것으로 측정되었다. 최대의 냉가스효율을 보이는 산소/석탄비의 증가가 냉가스효율의 증가를 가져왔다. 압력이 증가할수록 열분해에 의한 탄소전환의 비중은 감소하고 대신 기고반응에 의한 탄소전환의 비중이 증가하였다.

PDTF (Pressurized drop tube furnace) experiments using variations of temperature, oxygen/coal ratio, steam/coal and pressure with Roto coal (Sub A) were performed in order to investigate the effects of these experimental parameters on global gasification characteristics at elevated pressure. The results shows that the gasification at elevated pressure is more profitable than that at atmospheric pressure considering the carbon conversion and cold gas efficiency. The oxygen/coal ratio at which maximum cold gas efficiency was appeared ranged from 0.5 to 0.7 g/g. only when the temperature is sufficiently high enough, the raise of steam/coal ratio brings improvement of cold gas efficiency. As the pressure increased, the volume of carbon conversion by heterogeneous reaction increased but the volume of carbon conversion by pyrolysis decreased relatively.

키워드

참고문헌

  1. Encyclopedia of Energy Technology and the Environment Coal Gasification Smoot, L.D.;Bisio, A.(ed.);Boots S.G.(ed.)
  2. C & F v.13 Rate of combustion of size-graded fractions of char from a low-rank coal between 1200K and 2000K Ficld, M.A.
  3. Ind. Eng. Chem. Process Des. Dev. v.9 no.4 Kinetics of thermal decomposition of pulverized coal particls Badzioch, S.;hawksley. G.W.
  4. EPRI-AP-2601-DE-83-900574 Combustion and Gasification Charactcristics of Chars From Four Commercially Significant Coal of Different Rank Nsakala, N Y(et al.)
  5. Fuel v.69 Variation of char reactivity during simultaneous devolatilization and combustion of coals in a drop-tube reactor Abd El-Samed, A.K.;Hampartsoumian, E.;Farag, T.M.;Williams, A.
  6. Brigham Yong University, Ph.D. Desseriation Mixing and Gasification on Pulverized Coal Skinner, FD
  7. 에너지공학회 v.4 no.3 분류층 가스화기내에서의 석탄가스화 특성연구 이효진(등)
  8. Fuel v.75 no.9 Characteristics of entrained flow coal gasification in a drop tube reactor Lee, J.G.(et al.)
  9. The Pennsylvania State University, Ph D thesis Pyrolysis of a subbituminous coal in a high-pressure entrained-flow reactor Fatemi-Badi. S.M.
  10. DE-AC21-85MC22059 Entrained flow gasification at elevated pressure Hedman, PO(et al.)
  11. Proceedings of the 13th Annual International Pittsburgh Coal Conference Ahn, D.H.(et al.);S.H. Chiang(ed.)
  12. Proceedings of the 13th Annual International Pittsburgh Coal Conference A study on coal reactivity with a pressurized drop the tube furnace Kajitani, S(et al.);S.H. Chiang(ed.)
  13. Review of Scienfitic Instruments v.69 no.8 A pressurized drop-tube furnace for coal reactivity studies Ouyang, S.(et al.)
  14. 한전보고서 석탄가스화 복합발전 기술개발 오세기(등)