A comprehensive program to develop correlations for the physical properties of kraft black liquors
Experimental work includes pulping, liquor analysis, lignin purification and characterization, vapor-liquid equilibria, heat capacity, heats of solution and combustion, and viscosity measurements. It is now possible to operate the digester as a closed, rotating reactor or as a batch reactor with liquor circulation. When operated with liquor circulation, temperatures within the chip bed can be monitored during cooking. Cooking is reproducible, and cooks are being performed to produce liquors for experimental studies. The digester could be further modified to permit them to conduct rapid exchange batch pulping or to permit them to simulate continuous pulping. Liquors are now routinely analyzed to determine all components, except higher molecular weight organic acids and extractives. Lignin determination by UV-visible means has been improved. Lignin purification from black liquor has been improved and lignin molecular weights are determined routinely. The paper describes the digestor, the large scale evaporation, liquor analysis, thermal studies, and viscosity results. 31 figs., 5 tabs.
- Research Organization:
- Florida Univ., Gainesville, FL (USA). Coll. of Engineering
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- FG02-85CE40740
- OSTI ID:
- 5909879
- Report Number(s):
- DOE/CE/40740-2; ON: DE91009792
- Country of Publication:
- United States
- Language:
- English
Similar Records
A comprehensive program to develop correlations for the physical properties of kraft black liquors
Physical properties of kraft black liquor. Final report. Phase I
Related Subjects
PAPER INDUSTRY
SPENT LIQUORS
PHYSICAL PROPERTIES
BIOREACTORS
CHEMICAL COMPOSITION
COMBUSTION HEAT
CORRELATIONS
DENSITY
EQUILIBRIUM
EVAPORATORS
LIGNIN
LIQUIDS
MOLECULAR WEIGHT
OPERATION
ORGANIC ACIDS
PURIFICATION
SAMPLE PREPARATION
SLURRIES
SOLUTION HEAT
SPECIFIC HEAT
THERMAL EXPANSION
ULTRAVIOLET SPECTRA
VAPOR PRESSURE
VAPORS
VISCOSITY
VISIBLE SPECTRA
CARBOHYDRATES
DISPERSIONS
ENERGY
ENTHALPY
EXPANSION
FLUIDS
GASES
HEAT
INDUSTRIAL WASTES
INDUSTRY
LIQUID WASTES
MIXTURES
ORGANIC COMPOUNDS
POLYSACCHARIDES
REACTION HEAT
SACCHARIDES
SPECTRA
SUSPENSIONS
THERMODYNAMIC PROPERTIES
WASTES
WOOD PRODUCTS INDUSTRY
091000* - Biomass Fuels- Properties & Composition- (1990-)