C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/5.2
C10G 1/08 (2006.01) C10G 1/00 (2006.01)
Patent
CA 1309049
ABSTRACT OF INVENTION A multi-stage catalytic process for hydrogenation and liquefaction of coal using ebullated-bed catalytic reactors to produce low-boiling hydrocarbon liquid products, in which used catalyst is removed from a lower temperature first stage reactor operating at a temperature not exceeding about 800°F and cascaded forward to a higher temperature second stage reactor for further use therein. Reaction conditions in the first stage reactor are preferably 700-800°F temperature, 1000-4000 psig hydrogen partial pressure, and a coal feed rate of 10-90 lb coal/hr per ft3 catalyst settled volume in the reactor. Useful higher temperature or second stage reaction conditions are 750-850°F temperature, and 1000-4000 psig hydrogen partial pressure. The used catalyst withdrawn from the lower temperature or first stage reactor has a catalyst age of 300-3000 lb coal proced/lb fresh catalyst, and is transferred forward to the higher temperature second stage reactor for further use to catalyst age of 1000-6000 lb coal processed per lb freash catalyst. If desired, a higher temperature third catalytic reactor can be provided and used catalyst from the second stage reactor cascaded forward into the third reactor for fur her u e wherein. Useful catalysts include metal oxides of cobalt, iron, molybdenum, nickel, tin, or tungsten deposited on a base of alumina, magnesia, silica, or titania, with cobalt moly and nickel moly on alumina catalyst being preferred. This process advantageously required a smaller quantity of fresh catalyst per ton of coal processed to produce the low-boiling hydrocarbon liquid products.
580168
Comolli Alfred G.
Macarthur James B.
Mclean Joseph B.
Comolli Alfred G.
Gowling Lafleur Henderson Llp
Hri Inc.
Macarthur James B.
Mclean Joseph B.
LandOfFree
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