Occidental Flash Pyrolysis Process

The process utilizes the eoncept of short residence time of the feed coal thereby increasing the throughput of coal per unit of cross-sectional area with the subsequent higher production of liquid products. 

Milled and screened coal is transported to the reactor by hot nitrogen (approximately 300 psi) where recycled hot char heats the coal rapidly to 510°C-730°C (950°F-1350°F). A portion of the 

Product Inspections of Synthetic Crude Oil from Different Coal by the COED Process 

A related flash pyrolysis process, the Rockwell process, uses hydrogen as the carrier gas in entrained flow reactors which is claimed to improve the yield of products (Oberg and Falk, 1980). 

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Table 4. Product Distribution for the Occidental Flash Pyrolysis Process...

The occidental flash pyrolysis process originally called the Garrett process (Sass, 1974 Howard-Smith and Werner, 1976) (Figure 19.4) involves the pyrolysis of the feed coal particles at a temperature not in excess of 760°C (1400°F) in an entrained system to produce a liquid product, char, and gas. 

ORC [Occidental Research Corporation] Also called the Garrett process. A coal gasification process using flash-pyrolysis at approximately 900°C in the absence of oxygen. Piloted by the Occidental Research Corporation in the 1970s. 

Flash Pyrolysis Coal Liquefaction Process Development, FE-2244-4, Quarterly Report for July-Sept. 1976, Occidental Research Corp., Irvine, CA, 1976, pp. 35-41. 

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