Catalytic two-stage coal liquefaction process having improved ni

Details Catalytic two-stage coal liquefaction process having improved ni Catalytic two-stage coal liquefaction process having improved ni

1990-04-16

1991-09-03

Myers, Helane E.

Mineral oils: processes and products

By treatment of solid mineral, e.g., coal liquefaction, etc.

Plural hydrogenation steps

208417, 208418, 208409, C10G 100

Patent

active

050451804

ABSTRACT:
A process for catalytic multi-stage hydrogenation and liquefaction of coal to produce high yields of low-boiling hydrocarbon liquids containing low concentrations of nitogen compounds. First stage catalytic reaction conditions are 700.degree.-800.degree. F. temperature, 1500-3500 psig hydrogen partial pressure, with the space velocity maintained in a critical range of 10-40 lb coal/hr ft.sup.3 catalyst settled volume. The first stage catalyst has 0.3-1.2 cc/gm total pore volume with at least 25% of the pore volume in pores having diameters of 200-2000 Angstroms. Second stage reaction conditions are 760.degree.-870.degree. F. temperature with space velocity exceeding that in the first stage reactor, so as to achieve increased hydrogenation yield of low-boiling hydrocarbon liquid products having at least 75% removal of nitrogen compounds from the coal-derived liquid products.

REFERENCES:
patent: 3594305 (1971-07-01), Kirk, Jr.
patent: 3679573 (1922-07-01), Johnson
patent: 3700584 (1972-10-01), Johanson et al.
patent: 4018663 (1977-04-01), Karr, Jr.
patent: 4110192 (1978-08-01), Hildebrand et al.
patent: 4376037 (1983-03-01), Duhlberg et al.
patent: 4816141 (1989-03-01), McLean et al.
patent: 4842719 (1989-06-01), MacArthur
patent: 4874506 (1989-10-01), MacArthur
patent: 4879021 (1989-11-01), Hippo et al.

Affiliated with

Also associated with

Rating

Catalytic two-stage coal liquefaction process having improved ni does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalytic two-stage coal liquefaction process having improved ni, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalytic two-stage coal liquefaction process having improved ni will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1007023