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Filtering by: Subject Sulphate pulping process Remove constraint Subject: Sulphate pulping process Academic Affiliation Forest Products Remove constraint Academic Affiliation: Forest Products

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Chemical equilibrium of nonprocess elements in the kraft recovery cycle

Creator:

Streisel, Robert C.

Abstract:

Non-process elements are present in all kraft recovery systems. Non-process elements are defined as those elements which are not essential to the chemical process, i.e., are neither active pulping chemicals (e.g., NaOH and Na₂S in the kraft process), nor compounds present as a result of incomplete conversion of makeup chemicals...

Resource Type:

Dissertation
Interactions between dissolved wood organic chemicals and nonprocess elements in chemical pulping processes

Creator:

Wilson, Kenneth P.

Abstract:

This work is part of a larger project dealing with nonprocess element (NPE) behaviour in chemical pulping processes. Nonprocess elements are defined as those elements which are not essential to the chemical process, i.e. are neither active pulping chemicals (e.g., NaOH and Na2S in the kraft process), nor compounds present...

Resource Type:

Dissertation
Kraft green liquor pulping of Douglas-fir for corrugating medium

Creator:

Fang, Yi-Pygn

Abstract:

Douglas-fir wood chips from Oregon were pulped with kraft green liquor to produce semi-chemical pulps with properties suitable for the manufacture of corrugating medium. The effects of five cooking variables were studied, chemical charge, chip size, bark content of chips, pulping temperature, and liquor sulfidity. The combinations of levels of...

Resource Type:

Masters Thesis
Kraft pulping of Douglas-fir with soluble anthraquinone

Creator:

Dutta, Tapas

Abstract:

Several additives have been used in research and on an industrial scale to improve the pulp yield and to increase the rate of delignification. One such additive is 1,4- dihydro- 9,10-dihydroxyanthracene (DDA), also called soluble anthraquinone. This chemical is widely used in Japan and some other countries, especially with the...

Resource Type:

Masters Thesis
Reaction kinetic study and determination of controlling resistances during alkaline sulfite/anthraquinone pulping

Creator:

Medhora, Hiraz Kekobad

Abstract:

A survey of the pulping literature indicated that although the kinetics of the Kraft Pulping process has been studied in detail , very few studies have been reported for Alkaline Sulfite / Anthraquinone (ASAQ) pulping process. There is no existing rate model for this pulping process. Hence, the objectives of...

Resource Type:

Masters Thesis
The role of methanol in a methanol acid sulfite pulping process

Creator:

Wilson, Kenneth P.

Resource Type:

Masters Thesis

Full Text:

sulfite pulping process has significant beneficial effects on the process. The total pulping time to

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Academic Affiliation

Forest Products[remove]6

Advisor

Bublitz, Walter J.2
Frederick, W. J.2
Biermann, Christopher J.1
Laver, Murray L.1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1977 to 1990

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Creator

Wilson, Kenneth P.2
Dutta, Tapas1
Fang, Yi Pygn1
Medhora, Hiraz Kekobad1
Streisel, Robert C.1

Date

Date range begin – Date range end

Current results range from 1976 to 1988

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Decade

1980-19895
1970-19791

Degree Field

Forest Products6

Degree Level

Master's4
Doctoral2

Degree Name

Master of Science (M.S.)4
Doctor of Philosophy (Ph.D.)2

Language

English [eng]6

Non-Academic Affiliation

Oregon State University. Graduate School6

Peer Reviewed

No3

Resource Type

Masters Thesis4
Dissertation2

Rights Statement

Copyright Not Evaluated5
In Copyright1

Subject

Sulphate pulping process3
Sulphite pulping process2
Aluminum silicates -- Solubility1
Anthraquinones1
Methanol1
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