Novel supports for coal liquefaction catalysts

Abstract

Estimates of liquid circulation rates were obtained from an analysis of the cold model data and a plot of these values versus stirrer speed appears to be unique for the 60°axial impeller. The recycle ratio is typically of the order of 1000/1 or greater, and for all practical purposes the reactor may be treated as a perfectly mixed reactor. The work up of hydrotreating Run PDJ03 is complete. The run was terminated prematurely due to a rupture disk failure, but eight of the ten planned balance periods were completed. Carbon material balances were slightly high, ranging from 100.7% to 106.7%. Reaction rates for hydrogen uptake, hydrodesulfurization and hydrodenitrogenation were calculated. The catalyst did not deactivate significantly for the duration of the run and no evidence of catalyst attrition was observed after 215 hours of service. DISCLAIMER This report was prepared as an ac._unt of work sponsored by an agency of th¢ United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express, cr implied, or assumes an)' legal liability or responsibility for the accuracy, completeness, or u_fulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endor_,ement, recommendation, or favoring by the United Sta_cs Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency ther_f.