Two-stage coal liquefaction process developments at Wilsonville

Conference · Thu Dec 31 23:00:00 EST 1987 · Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States)

OSTI ID:6138518

Lee, J M; Davies, O L; Pinkston, T E; Gough, J R

A recently completed close-coupled integrated (CC-ITSL) processing mode was an important development in the Wilsonville program for making clean distillate fuels. In the CC-ITSL mode the two reactors were directly coupled without any pressure letdown. Interstage cooling was done only to the extent required to control the second reactor temperature. Such close-coupled operation should offer several process benefits such as increased overall thermal efficiency, reduced potential for retrogressive reactions which may take place in the absence of hydrogen at longer residence times, and improved product quality. This paper is focused on two-stage coal liquefaction process performance with close-coupled reactors. Results are presented for two runs: Run 253 and Run 254. Run 253 processed high ash Illinois No. 6 coal and used Shell 317 1/20'' trilobe bimodal catalyst in both reactors. Product yield and product quality data are discussed. Catalyst performance comparisons for Shell 317 (Run 253) and Amocat 1A and 1C (Run 251-I and Run 252) are made in terms of distillate yields, catalyst deactivation and catalyst replacement rates. Run 254 processed low ash Ohio No. 6 coal and used Shell 317 1/20'' trilobe bimodal catalyst in both reactors. The effects on process performance of the low ash feed coal, high resid recycle, high second stage reaction temperature and high space velocity are presented. The effect of the coal type on the distillate yield is discussed in comparisons of Illinois No. 6 and Ohio No. 6 coals. The first stage catalyst equilibrium activity level is discussed. Catalyst performance data at different second stage reaction temperatures are presented in terms of catalyst deactivation and catalyst replacement rates. Optimum and cascading catalyst requirements are discussed.

• Research Organization: Catalytic Inc., Wilsonville, AL (USA)
• OSTI ID: 6138518
• Report Number(s): CONF-8809273-
• Journal Information: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States), Journal Name: Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States) Vol. 33:3; ISSN ACFPA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ALABAMA
ASH CONTENT
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CATALYSTS
CHEMICAL PROPERTIES
CHEMICAL REACTION YIELD
CHEMICAL REACTORS
COAL
COAL LIQUEFACTION
COAL LIQUEFACTION PLANTS
COAL LIQUIDS
COMPARATIVE EVALUATIONS
DATA
DEACTIVATION
DISTILLATES
EFFICIENCY
ENERGY SOURCES
FEDERAL REGION IV
FLUIDS
FOSSIL FUELS
FUELS
INDUSTRIAL PLANTS
INFORMATION
LIQUEFACTION
LIQUIDS
LOADING RATE
MATERIALS
MODIFICATIONS
NORTH AMERICA
PERFORMANCE
RECYCLING
RESIDUES
TECHNOLOGY ASSESSMENT
TEMPERATURE EFFECTS
THERMAL EFFICIENCY
THERMOCHEMICAL PROCESSES
TSL PROCESS
USA
YIELDS