Computerized IR Determination of Structural Group Composition for High-Boiling Oil Fractions

A computerized form is given of IR spectral determination for structural group composition in high-boiling oil fractions by Berthold's method (7 structural elements) and Kuklinskii's method (28 structural elements), which reduces the analysis time by factors of 3–4 and improves the accuracy.     

A New Principle for Calculating Theoretical Correction Factors in the Gas-Chromatographic Determination of C1–C6 Hydrocarbons in Crude Oil

A gas-chromatographic method is described for determining the C₁–C₆ hydrocarbons in crude oil, which is an alternative to GOST 13379-82, and experimental and theoretical confirmations are given for a new principle for deriving the correction coefficients for quantitative interpretation. Estimates are given of the accuracy characteristics.     

Automation of package grading processes

Conclusions One of the possible schemes for automating package grading has been given.In developing automatic package grading, special attention should be paid to devising electronic instruments — fibre quality determiners.Translated from Khimicheskie Volokna, No. 3, pp. 20–23, May–June, 1989.     

Determination of Chlorine in Crude Oils and Light Cuts

Two methodological variants are developed for determination of the content of organically bound chlorine (OBC) in crude oils and light cuts in quality monitoring in the absence of conditions for implementation of the ASTM D 4929 method. The monitoring scheme is supplemented by the gas –chromatographic method of determining organochlorine compounds (OCC), and flooding of carbon tetrachloride into the crude is found. The drawbacks of the ASTM D 4929 method and the advantages of fast determination of the OCC content directly in crudes with the possibility of predicting naphtha quality are demonstrated.     

Extending the Informativeness of Simulated Distillation in Oil Monitoring at Refineries

Methods are proposed for forecasting the basic characteristics of light oil fractions (sulfur contents, fluidity factors) from gas-chromatographic data on simulated distillation, which is integrated in a monitoring scheme. Measurement errors are estimated.     

Decarburization of tungsten carbide during electrochemical application of cobalt coatings in aqueous solutions

Translated from Poroshkovaya Metallurgiya, No. 6(354), pp. 20–23, June, 1992.