Hydropyrolysis, flash

Flash-liquid Liquid obtained from flash pyrolysis accomplished in a time of < 1 s Flash-gas Gaseous material obtained from flash pyrolysis within a time of < 1 s Hydropyrolysis Pyrolysis with water Methanopyrolysis Pyrolysis with methanol Ultrapyrolysis Pyrolysis with very high degradation rate... 

For a so-called "advanced process of flash hydropyrolysis, (14), a paper by Rockwell International and Cities Service Research and Development reported a 1977 minimum high Btu gas price of 2.36/MMBtu from western subbituminous coal using "AGA/ERDA cost guidelines" with utility financing under conditions yielding significant quantities of by-product BTX liquids. For details, reference was made to contractual reports. 

The available information leads one to believe that the maximum production of liquids with no net hydrogen consumption and the low-temperature catalytic hydrocarbonization/gasification are alternatives which appear to have great merit. The former of these, when applied to western coals, appears to be technically ready for commercial application and economically competitive with alternative coal liquefaction processes. Advantages of the flash hydropyrolysis processes over the Coalcon process are difficult to perceive. 

What, then, does the future hold This author believes that the catalytic hydrocarbonization/gasification concept will ultimately achieve commercial success for the production of liquid and gaseous fuels from coal. In selected applications, the mild hydrocarbonization of western coal to produce liquid and gaseous fuels with power generation from the low-sulfur char may also be commercially attractive. Finally, further development of the flash hydropyrolysis technology, as exemplified by the Rocketdyne project, may eventually lead to a technically and economically attractive liquefaction process. But the most important questions still remain unanswered. Does private industry have sufficient interest to pursue the possibilities Where is the interest focused Will a private consortium build a hydrocarbonization/ cogeneration complex using western coal Will the phoenix arise from the ashes ... 

Fallon, P.T., Bhatt, B., and Steinberg, M. "The Flash Hydropyrolysis of Lignite and Subbituminous Coals to both Liquids and Gaseous Hydrocarbon Products" Brookhaven National Laboratory BNL 26210 presented at the 178th National Meeting of the American Chemical Society Washington, D.C., 1979. 

Thus, while flash pyrolysis and flash hydropyrolysis have not advanced too far beyond the bench-scale studies, there are several potential commercial ventures that employ the pyrolysis of coal as a means of producing liquid products that are becoming more and more viable with the ever-increasing price of petroleum and the more conventional liquid fuels (Chapters 18,19, and 26). 

Rockwell/Cities Service Flash Hydropyrolysis Developing Entrained flow 845 3.5 -0.1 Bituminous 46 38 16 — 22... 

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