Abstract: The 2.6 Mt/a single-series fixed-bed residue hydrogenation unit in SINOPEC Luoyang Company is the largest single-series residue hydrogenation unit in China. During the first start-up and operation, the some problems such as high filter differential pressure, periodic pulsation of circulating hydrogen content, and sulfur-containing wastewater were appeared, which brought great difficulty to the stable operation of the plant. Through the analysis of raw material residue, process flow, equipment operation and other aspects, the above problems have been solved or alleviated successively, and the long-term operation of the device has been realized. According to the calibration results, the raw material properties and product quality were relatively stable, the desulfurization rate was 75.16%, the denitrification rate was 34.48%, the carbon residue removal rate was 46.02%, and the metal (Ni+V) removal rate was about 77%, which provided the high quality raw material for the downstream device.

Key words: hydrogenation of residual oil, filter, differential pressure, circulating hydrogen