ABSORPTIVE REMOVAL OF TRACE AMOUNT OF METAL IN LIQUID HYDROCARBON AND APPARATUS THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a method for absorbing and removing a trace amount of metal contained in a liquid hydrocarbon containing asphaltene in high efficiency over a long period, and apparatus therefor. SOLUTION: At least two apparatuses in first absorption treatment zone 1 provided with porous inorganic absorbent-packed layers are parallel arranged and these apparatuses are connected in series so that either one thereof is located on upstream side and the other is located on downstream side, and a liquid hydrocarbon containing asphaltene is fed to the absorption treatment zone 1 on the upstream side to bring the hydrocarbon into contact with a porous inorganic absorption filler, and then, the liquid hydrocarbon is subjected to absorption treatment in the downstream absorption treatment zone and the hydrocarbon is subjected to absorption treatment in the absorption treatment zone on the downstream side during exchange of absorbent in absorption treatment zone on the upstream side, and the absorption treatment zone is connected so as to become downstream after finishing exchange of the absorbent, and each hydrocarbon treated with the fist absorption treatment zone 1 is fed to a second absorption treatment zone 2 packed with a porous carbonaceous material to bring the hydrocarbon into contact with the absorbent.