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- W2393819334 abstract "A new method for the ring analysis and branching analysis of mineral oil fractions and aromatic concentrates is described.Based on the conception of addability of specific refraction and of molecular parachor,formulae for cal- culating the number of aromatic rings per mean molecule(R_A),total number of rings per mean molecule(R_T),and degree of branching were derived. Comparison of this new method with the“direct method”was made,it is concluded which is more reliable than the methods conventionally used.Degree of branching calculated by this new method also agree with the value calcu- lated by Boelhouwer-Waterman method on the same oil after hydrogenation, however,the advantage in using this new method is that the hydrogenation of the oil fraction analyzed may be omitted. Introducing certain assumptions,this method can be simplified,thus the R_A and R_T can be calculated from r_(LL),M,%C and %H.The basic data of 38 mineral oil fractions and aromatic concentrates with R_A from 0.2 to 3.3 and R_T from 1.0 to 4.8 which are found from the literature have been used to calculate R_A and R_T by this simplified method,and the results are compared with those calculated by“direct method”,n-d-M method,and Hazelwood method.The average deviations of this simplified method from the“direct method”for R_A are ±0.03 when R_A2,±0.06 when R_A2,and for R_T are ±0.08 when R_A2,±0.09 when R_A2,respectively.It is obviously that for both aromatic concentrates and paraffinic oil fractions,the new method is more accurate than the other two methods. Application of this new method to calculate R_A and R_T of olefin containing oils such as cracking cycle stocks or shale oil fractions is also discussed." @default.
- W2393819334 created "2016-06-24" @default.
- W2393819334 creator A5045317640 @default.
- W2393819334 date "1958-01-01" @default.
- W2393819334 modified "2023-09-25" @default.
- W2393819334 title "RING ANALYSIS AND BRANCHING ANALYSIS OF MINERAL OIL FRACTIONS AND AROMATIC CONCENTRATES" @default.
- W2393819334 hasPublicationYear "1958" @default.
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