Characterization of shales using sink float procedures
The analysis of the organic fraction in shale leads to important processing insights. However, the analysis is complicated by the presence of a substantial fraction of rock. The rock often contains carbon, as carbonates, and hydrogen, as water of hydration, which make it extremely difficult to obtain a true organic analysis. The route used most often to obtain organic analyses is to isolate the kerogen by acid removal of the inorganics. This poses numerous problems in that the acids used, HCl and HF, can interact with and be incorporated into the organic matrix. Also basic nitrogen compounds are easily extracted from the shale. It has been observed that up to 20% of the organic carbon and up to 50% of the total nitrogen may be removed by acid extraction. To obviate these difficulties a procedure has been developed which utilizes the analyses of raw sink float shale samples to calculate the ratios of organic hydrogen and nitrogen to organic carbon. In addition an estimate of the hydrogen and nitrogen content of the mineral matter is obtained.
- Research Organization:
- Exxon Research and Eng. Co., Baytown, TX
- OSTI ID:
- 6363377
- Report Number(s):
- CONF-830303-
- Journal Information:
- Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States), Vol. 28:1; Conference: 185. American Chemical Society national meeting, Seattle, WA, USA, 20 Mar 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
OIL SHALES
CHEMICAL ANALYSIS
FLOTATION
CARBON COMPOUNDS
CHEMICAL COMPOSITION
COMPARATIVE EVALUATIONS
HYDROGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
QUANTITY RATIO
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
ENERGY SOURCES
FOSSIL FUELS
FUELS
MATERIALS
ORGANIC COMPOUNDS
SEPARATION PROCESSES
040500* - Oil Shales & Tar Sands- Properties & Composition