study of liquor side fouling in sulfite spent liquor evaporators
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study of liquor side fouling in sulfite spent liquor evaporators

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Published .
Written in English


  • Linear programming -- Data processing.,
  • Algorithms.,
  • Parallel processing (Electronic computers)

Book details:

Edition Notes

Statementby Woon-Young Yoon.
The Physical Object
Pagination248 leaves, bound :
Number of Pages248
ID Numbers
Open LibraryOL15528488M

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Sulfite liquor definition is - the bisulfite solution used in making pulp by the sulfite process. sulfite waste liquor[′səl‚fīt ¦wāst ‚likər] (materials) Waste reactants and other impurities from the sulfite pulping of wood; used as a foaming and emulsifying agent, in adhesives and tanning, and for road construction. Sulfite Waste Liquor (or spent pulping liquor), a by product in the manufacture of wood pulp by the sulfite process. SULFITE LIQUOR Utilization of spent sulfite liquor for the production of fodder yeast is not new. Germany produced an estima tons of yeast from spent sulfite liquor in and Sweden has also utilized spent sulfite liquor in this way Information regarding the German sulfite liquor yeast plants stimulated interest. The sulfite process produces wood pulp that is almost pure cellulose fibers by treating wood chips with solutions of sulfite and bisulfite ions. These chemicals cleave the bonds between the cellulose and lignin components of the lignocellulose. A variety of sulfite/bisulfite salts are used, including sodium (Na +), calcium (Ca 2+), potassium (K +), magnesium (Mg 2+), and .

Spent sulfite liquor (SSL), also known as brown liquor, is a byproduct from the acidic sulfite wood pulping process and is burned for energy production in most pulp mills [11] because of lack of. spent sulfite liquor is also variable. It is largely controlled by the sugar con tent, although other dissolved sub stances contribute substantially. Gen erally, the BOD range of spent sulfite liquor at this plant is f to 35, mg/1. Yeast Production History The idea of growing microorganisms on the sugars present in spent sulfite. This is especially true of the black liquor evaporator system which was designed to produce 80% solids from highly viscous eucalyptus black liquor. By generating high solids, recovery boiler operations reach maximum efficiency in the generation of steam and lower use of energy. Evaporation of the black liquor was rated at File Size: KB. In other work, Fernández-Rodríguez et al. () performed a study of the splitting of spent sulfite liquor in different fractions with three UF membranes (15, 5, and 1 kDa). A cascade.

The Black Liquor Evaporators - Principles course begins by describing how evaporators generally function and then lists the objectives of black liquor evaporators installed at kraft pulp mills. Next, it introduces some steam theory topics, including the relationship between steam pressure and temperature, flashing, and boiling point rise. Several sulfite mills ferment the spent sulfite cooking liquor (SSL) to produce ethanol, in Sweden al m 3 ethanol is produced per year (IEA Bioenergy, Liquid Biofuels T Newsletter #2, ). Complications with SSL fermentation are the large proportion of xylose and the presence of inhibitory compounds, including: organic acids Cited by: Acidification has been commercialized for producing kraft lignin from black liquor of kraft pulping process. This work intended to evaluate the effectiveness of acidification in extracting lignocelluloses from the spent liquor of neutral sulfite semichemical pulping (NSSC) process and from prehydrolysis liquor (PHL) of kraft-based dissolving pulp production by: The cooking liquor produced (called brown, red, thick, or sulfite liquor depending upon the application) has special characteristics that must be taken into account when designing the liquor recovery boiler. The first ANDRITZ sulfite boilers were installed in the s, so the company has a long history and deep experience.