석유코크스의 연료적 가치에 대한 관심이 증가하여, 세계적으로 정유공정이나 발전용으로 석유코크스 가스화 플랜트 적용 사례가 증가하고 있다. 본 연구에서는 1톤/일 규모의 석탄가스화 시스템을 활용하여 석유코크스 가스화를 위한 요소기술을 개발하고자 하였다. 석유코크스는 반응성이 낮아 가스화를 위한 산소소모량이 석탄보다 많이 소요되었으며, 석유코크스와 석탄을 각각 50%로 혼합한 연료의 경우, 합성가스 발열량은 6.7~7.2 MJ/Nm3 수준을 보였다. 가스화 성능 면에서 전환율은 산소량 증가에 따라 92%이상까지 도달할 수 있었지만, 냉가스효율은 석탄보다 낮은 수준의 결과를 보였다. 이는 반응성이 낮은 석유코크스의 경우 가스화 성능 향상을 위해 버너 노즐부위에 대한 미립화설계 보완이 필요한 것으로 파악되었다.

Gasification plant using petroleum coke for refinery and power generation process is increased from considering petroleum coke as a valuable fuel. In this study, gasification of petroleum coke was performed to utilize petroleum coke and to develop essential technology using 1T/D coal gasification system. In case of petroleum coke gasification, because of lower reactivity, consumption of oxygen is higher than coal gasification. The calorific value of syngas from petroleum coke mixed with coal at a mass ratio of 1:1 shows about 6.7~7.2 MJ/Nm3. Although carbon conversion could reach more than 92% according to oxygen amount, cold gas efficiency shows lower value than the case of coal. Therefore, it was shown that complemental study in burner design to atomize slurry droplet is required to elevate gasification performance of petroleum coke which has lower reactivity than coal.

Gasification Petroleum Coke Coal Syngas

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