Technical and economic assessment of the occidental coal flash pyrolysis process. Final report

Technical Report · Sat Dec 01 04:00:00 EST 1984

OSTI ID:5982483

Deslate, W D; Durai-Swamy, K

This report presents conceptual designs and economics for coal liquids production via the Occidental Flash Pyrolysis process. Commercial size plants were designed for West Kentucky bituminous and Wyoming subbituminous coals. A comparison of the conventional and Polystop quench and oil recovery systems was made. In addition, the economics of Occidental's Convert and Remove char desulfurization process was examined. The conceptual designs and the corresponding capital and operating requirements were developed by Foster Wheeler Energy Corporation. The required selling prices of oil were evaluated following EPRI's economic premises for coal conversion systems. The plants process 20,200 tons per stream day of dry coal producing mildly hydrotreated coal liquids. The by-products are char, char-containing heavy oil, fuel gas, ammonia and sulfur. Recovered phenols are blended into the char-containing heavy oil. Depending on the feed coal and quench system employed, the total investment ranges from $1.1 to $1.4 billion mid-1982 dollars. Levelized oil product prices in mid-1982 dollars range from $6.70 to $7.71/10/sup 6/ Btu for a nonregulated producer and from $3.87 to $5.14/10/sup 6/ Btu for a regulated utility producer with char by-product credited at full coal Btu value. The levelized prices are increased 5 to 7% and 9 to 11%, respectively, when char is credited at only 75% of coal value. The char desulfurization process was found to be very expensive. Incorporation of char desulfurization increases the oil selling price by about 55%. 11 references, 30 figures, 22 tables.

• Research Organization: Occidental Research Corp., Irvine, CA (USA)
• OSTI ID: 5982483
• Report Number(s): EPRI-AP-3786; ON: TI85920172
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010406* -- Coal & Coal Products-- Pyrolysis & Cracking-- (-1987)
015000 -- Coal
Lignite
& Peat-- Economic
Industrial
& Business Aspects
BITUMINOUS COAL
BLACK COAL
CAPITALIZED COST
CARBONACEOUS MATERIALS
CHARS
CHEMICAL REACTIONS
COAL
COAL GASIFICATION
COAL LIQUEFACTION
COAL LIQUIDS
COST
DATA
DECOMPOSITION
DESIGN
DESULFURIZATION
DIAGRAMS
ECONOMIC ANALYSIS
ECONOMICS
ENERGY SOURCES
FLOWSHEETS
FLUIDS
FOSSIL FUELS
FUELS
GASIFICATION
INFORMATION
LIQUEFACTION
LIQUIDS
MANAGEMENT
MASS BALANCE
MATERIALS
NUMERICAL DATA
OCCIDENTAL FLASH PYROLYSIS PROCESS
OPERATING COST
PRICES
PROCESSING
PRODUCTION
PYROLYSIS
PYROLYSIS PRODUCTS
SUBBITUMINOUS COAL
TECHNOLOGY ASSESSMENT
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING