Chemistry: natural resins or derivatives; peptides or proteins; – Natural resins or derivatives – Recovery of tall oil or derivatives from papermaking waste,...
Reexamination Certificate
2007-04-24
2007-04-24
Seidleck, James (Department: 1711)
Chemistry: natural resins or derivatives; peptides or proteins;
Natural resins or derivatives
Recovery of tall oil or derivatives from papermaking waste,...
C073S03200R, C073S861000, C196S132000, C196S141000, C201S001000, C203S001000, C208S041000
Reexamination Certificate
active
11060938
ABSTRACT:
The present invention relates to a method of refining crude tall oil. According to the method, the crude tall oil is fed into a column distiller, where it is separated into desired fractions. The conditions of the column distiller are adjusted on the basis of the composition of the feed and the product flow. According to the present invention, the densities of the crude tall oil fed into the column distiller and of at least one product flow are measured accurately as a function of the temperature. The density values are compared with correlation coefficients derived from the chemical compositions of the flows, coefficients which are obtained on the basis of laboratory analyses made earlier from corresponding flows, by using temperature compensation to specify the correlations, and by taking account of the regular variation in the wood composition of fresh wood according to the annual cycle and, as a result, the compositions of the flows are achieved. The present invention decreases the number of chemical analyses and improves the uniformity of the products.
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“Refining and Separation of Crude Tall-Oil Components,” Separation Science and Technology, vol. 31, No. 17, 1996, pp. 2307-2316.
“Micro Motion Refinery Applications,” A list of refinery applications with Micro Motion flowmeters, copyright Micro Motion, Inc., 2001, published by Emerson Process Management.
“Micro Motion Elite Mass Flow and Density Meters with MVD Technology,” Micro Motion Product Data Sheet PS-00374, Rev. F, Jun. 2006, published by Emerson Process Management.
Naval Stores: Production, Chemistry, Utilization, (Duane F. Zinkel and James Russell, eds), New York, Pulp Chemicals Association, 1989, pp. 160-162.
Forchem Oy
Mesh Gennadiy
Seidleck James
Smith-Hill and Bedell
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