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Title: Physical properties of kraft black liquor. Final report. Phase I

Technical Report ·
DOI:https://doi.org/10.2172/5278628· OSTI ID:5278628

Methods were selected, equipment installed, and procedures developed for determining rheological properties; for determining thermal properties (stability, density, thermal expansion, and heat capacity); for purification and characterization of lignin (glass transition, stability, weight average molecular weight, and number average molecular weight); and for performing chemical analyses (negative inorganic ions, positive inorganic ions, acid organic salts, lignin, and total solids). A strategy for pulping to supply test liquors was developed, and a statistically designed pulping experiment was specified for a Southern softwood species. Arrangements were made for performing initial pulping work in an industrial pilot plant, and a preliminary set of pulping experiments were conducted. Liquors from the preliminary pulping experiments were used to test procedures and to determine reproducibility of the experiment. Literature was also surveyed and preliminary selection of designs for a pilot digester, and for equipment to determine surface tension were made.

Research Organization:
Maine Univ., Orono (USA)
DOE Contract Number:
AC02-82CE40606
OSTI ID:
5278628
Report Number(s):
DOE/CE/40606-T1; ON: DE84006996
Country of Publication:
United States
Language:
English