The possibility of converting a combined delayed-coking unit to operating in conditions of mild thermal cracking (visbreaking) of petroleum resids is examined. Major technical and process solutions that ensure the maximally efficient use of the existing equipment are proposed. The possibility of obtaining boiler fuel with a maximum residual hydrogen sulfide content of 2 ppm is demonstrated. Cost effectiveness is ensured by a significant increase in the volume of refined petroleum resids.
展开▼
