Hydroprocessing of Heavy Oils. Quarterly Technical Progress Report, December 4, 1979-March 3, 1980

摘要

During the second quarter of the Contract, Task 1 experimentation to hydrodesulfurize (HDS) and hydrocrack (HC) No. 4 fuel oil continued. Two of the three available catalysts (Shell 324 and a proprietary Union Carbide catalyst) were evaluated. Shell 324 could remove as much as 96% of the sulfur originally in the oil and convert up to 41% of the nonreformable fraction in the oil to reformable products at 500 exp 0 C. Operating at this high temperature, however, resulted in the deposit of black carbon-containing material on the catalyst pellets, thereby restricting the flow across the reactor. The Union Carbide catalyst was tested at temperatures up to 470 exp 0 C. The product oil was found to represent 95% sulfur removal and 48% conversion to reformable products. Black carbon-based deposits were detected on the catalyst. Because the conditions under which these tests were carried out were not optimized, it may be possible to improve the quality of the products. Also, recycling the nonreformable material back into the reactor for further cracking will be investigated. (ERA citation 05:030180)