METHOD AND DEVICE FOR IMPROVING EFFICIENCY OF SPONGE OIL ABSORPTION

摘要

A method for improving efficiency of sponge absorption includes providing cold flash drum liquid to an inlet of a cold stripper to produce a cold stripper net overhead vapor stream rich in liquid petroleum gas, and separately providing hot flash drum liquid to an inlet of a hot stripper to produce a hot stripper net overhead vapor stream rich in hydrogen. The cold stripper net overhead vapor stream and the hot stripper net overhead vapor stream are separately routed to a sponge absorber to recover a liquid petroleum gas output stream using sponge oil. In particular, the cold stripper net overhead vapor stream and the hot stripper net overhead vapor stream are separately routed to the sponge absorber at different tray locations

主权项

1. A method for improving efficiency of sponge absorption comprising:
providing cold flash drum liquid to an inlet of a cold stripper to produce a cold stripper net overhead vapor stream rich in liquid petroleum gas; separately providing hot flash drum liquid to an inlet of a hot stripper to produce a hot stripper net overhead vapor stream rich in hydrogen; routing the cold stripper net overhead vapor stream and the hot stripper net overhead vapor stream to a sponge absorber to recover a liquid petroleum gas output stream using sponge oil, wherein the cold stripper net overhead vapor stream and the hot stripper net overhead vapor stream are separately routed to said sponge absorber at different tray locations.