Two-stage coal liquefaction process: development of first-stage catalyst. Final report, October 1978-June 1980

Technical Report · Tue Sep 01 04:00:00 EDT 1981

OSTI ID:5323999

Kang, C C; Bajars, L; Ozawa, S; Bekker, A

The objective of this project is to evaluate the advantages of a two-stage coal liquefaction process using catalysts with optimum pore sizes in each stage. A catalyst with optimized pore diameters (considered to be in the range of greater than 1000 Angstrom) could be used in the first-stage to hydroconvert the large coal molecules to residuum containing mainly asphaltenes (toluene-soluble) which are essentially metal-free. A catalyst with pore diameter predominantly in the range smaller than 1000 Angstrom and greater than 100 Angstrom could be used in the second-stage to convert the asphaltenes to distillates. An eighteen-month research program was conducted to develop a macropore catalyst for the first-stage. A batch screening autoclave unit was used to select a macropore catalyst with optimum pore size distribution. Catalysts with median pore diameter ranging from 2350 to 32,000 Angstrom and surface area from 6.9 to 2.5 m/sup 2//g and containing 1.5% (Mo+Ni or Mo+Co) were evaluated. Macropore catalysts with median pore diameters of 2350, 4000, 8400 and 8800 Angstrom yielded significantly lower unconverted coal plus coke than the reference (or standard) H-Coal catalyst (American Cyanamid HDS 1442A). Evaluation at two reaction temperatures, 830/sup 0/F and 850/sup 0/F, demonstrated that these four macropore catalysts were at least as resistant to coking as HDS 1442A. 5 references, 15 figures, 10 tables.

• Research Organization: Catalysis Research Corp., Palisades Park, NJ (USA)
• DOE Contract Number: AC22-78ET10735
• OSTI ID: 5323999
• Report Number(s): DOE/ET/10735-T2; ON: DE84006446
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AUTOCLAVES
CATALYSTS
COAL LIQUEFACTION
DATA
EXPERIMENTAL DATA
INFORMATION
LIQUEFACTION
NUMERICAL DATA
OPTIMIZATION
PERFORMANCE TESTING
POROSITY
RECOMMENDATIONS
TESTING
THERMOCHEMICAL PROCESSES
TSL PROCESS