Pilot study of blended diesel hydrorefining based on micro-interfacial intensification technique

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Abstract Based on micro-interfacial intensification technique, a pilot study of diesel fuel hydrorefining were carried out using blended diesel fuels as feedstocks, by means of an up-flow reactor which packed 2 L catalyst. The effects of process parameters such as reaction pressure, reaction temperature, hydrogen-oil volume ratio, space velocity, etc. and catalyst types on the performances of micro-interface intensified hydrorefining of diesel fuel were investigated. The experimental results showed that the hydrodesulfurization performance of micro-interfacial intensification hydrogenation was significantly better than that in conventional up-flow reactor, the difference of which reduced as the sulfur contents of refined oil declined in the range of investigated process conditions. Compared to diesel hydrorefining by conventional up-flow reactor, using the blended diesel with sulfur content of 1.58% as feedstock oil and HRC-1 as catalyst, the reactor pressure of micro-interfacial intensification hydrorefining could reduce by more than 3 MPa when desulfurization rate was above 99.75%. Using the blended diesel with sulfur content of 1.02% as feedstock oil, and HRC-2 and HRC-3 as grading catalyst, the main quality indicators of refined oils such as sulfur content could satisfy the requirements of China national standard (VI) for automobile diesel fuels under the condition of space velocity of 0.8 h^-1, reaction pressure of 5.7 MPa, reaction temperature of 365 ℃ and the hydrogen-oil volume ratio being greater than or equal to 500. This processing technique could provide a reference for industrial scale-up of micro-interfacial intensification hydrorefining of blended diesel under medium-low reaction pressure.

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	SONG Junchao
	LI Zhi
	LI Pengcheng
	CHEN Qiang
	LIU Jinlong
	LI Liquan
	ZHU Jianhua

Keywords： blended diesel fuel hydrorefining micro-interfacial intensification pilot study up-flow reactor

Received 2021-12-15;

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SONG Junchao, LI Zhi, LI Pengcheng, CHEN Qiang, LIU Jinlong, LI Liquan, ZHU Jianhua.Pilot study of blended diesel hydrorefining based on micro-interfacial intensification technique[J] Chemcial Industry and Engineering, 2023,V40(4): 50-57

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