Synthetic crude oil from coal

Patent · Tue Mar 31 04:00:00 EST 1970

OSTI ID:5946407

Shripek, M; Ludlam, L L; Whitehead, K E

Synthetic crude oil is prepared by carbonization of coal and hydrotreating the coal tar products. Thus, Kaiparowits coal (Utah) (< 0.25-in mesh) was dried to 3 wt % moisture by countercurrent contact with hot flue gas from the carbonizer, and fed to the double screw mixer of the carbonizer where it was mixed with hot recycle char. Contact time in the mixer is a few seconds. The coal-char mixture was conveyed into the carbonization vessel at 1100/sup 0/F. The middle oil and tar streams ith the naphtha stream, are hydrotreated over Cyanamid HDS-3A Ni-Mo catalyst at 1750 psig hydrogen, 750/sup 0/F, and 1.0 liquid hourly space velocity. The reactor effluent is cooled to 100/sup 0/F and flashed to separate H-rich recycle gases from liquid products. Water settles by gravity from the oil products. The gases are first scrubbed with middle oil to remove naphtha and then fed to a tower, e.g., a Rectisol extraction tower, where H/sub 2/S and CO/sub 2/ are removed by extraction with MeOH. The scrubbed gases are used to produce H.

• Assignee: Atlantic Richfield Co.
• Patent Number(s): US 3503866
• OSTI ID: 5946407
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
&amp; Peat-- Hydrogenation &amp; Liquefaction
ALLOYS
CARBONACEOUS MATERIALS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COAL
COAL LIQUEFACTION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGENATION
LIQUEFACTION
MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
SYNTHESIS
SYNTHETIC FUELS
SYNTHETIC PETROLEUM
THERMOCHEMICAL PROCESSES