Development of the magnesia-base pulping process |
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Development of the Magnesia-Base Pulping Process
',;*;, L. S. WILCOXSON • ^
Vice President in charge of Research
and Development The Babcock and Wilcox Company
There are many facets to the generic problem of Industrial Waste Disposal, as evidenced by the varied and comprehensive program ar¬ ranged for this Conference series. Regardless of the complexity of factors considered in any specific instance, one invariably arrives at the con¬ clusion that intelligent handling of the problem will result in one or more of the following desirable objectives: ' •' ,, •
1. Elimination of some form of nuisance or pollution.
2. Improvement in the economics of the process involved.
3. Conservation of important natural resources.
Such an industrial waste problem has existed in the Acid Pulping Industry since the inception of the process in 1867. To date the great majority of acid-sulphite pulp has been produced using a calcium bi¬ sulphite cooking liquor for digestion of wood chips and the so-called "waste" liquor, which is separated from the pulp after the cooking operation, has been disposed of simply by discharging it into the stream or body of water adjacent to the mill.
This "waste liquor" contains the lignins, extracted from the wood, as well as the chemicals used in the cooking operation in intricate chemi¬ cal combination. Such means of disposal not only results in complete loss of the lignins, calcium and a large portion of the sulphur used in the process, but this material when dumped into the streams causes a con¬ tamination and a reduction of the oxygen content of the water. Ob¬ viously the flow of water in the stream, and its ability to dissipate the "waste liquor", plays a large part in determining whether or not such pollution is detrimental and must receive careful consideration, along with the economics involved in the disposal problem, to determine whether or not elimination of this nuisance is advisable. ,-
In the Sulphite Pulping Industry, it is estimated that a combined total of 17,000 tons of pulp is produced daily in the United States and Canada. To produce this quantity of pulp it is necessary to cook ap-
Object Description
| Purdue Identification Number | ETRIWC195106 |
| Title | Development of the magnesia-base pulping process |
| Author | Wilcoxson, L. S. |
| Date of Original | 1951 |
| Conference Title | Proceedings of the Sixth Industrial Waste Utilization Conference |
| Conference Front Matter (copy and paste) | http://e-archives.lib.purdue.edu/u?/engext,106 |
| Extent of Original | p. 51-56 |
| Collection Title | Engineering Technical Reports Collection, Purdue University |
| Repository | Purdue University Libraries |
| Rights Statement | Digital object copyright Purdue University. All rights reserved. |
| Language | eng |
| Type (DCMI) | text |
| Format | JP2 |
| Date Digitized | 2008-09-22 |
| Capture Device | Fujitsu fi-5650c |
| Capture Details | ScandAll 21 |
| Resolution | 300 ppi |
| Color Depth | 8 bit |
Description
| Purdue Identification Number | 001ETRIWC1951_page 51 |
| Title | Development of the magnesia-base pulping process |
| Author | Wilcoxson, L. S. |
| Date of Original | 1951 |
| Conference Title | Proceedings of the Sixth Industrial Waste Utilization Conference |
| Series |
Extension series no. 76 |
| Collection Title | Engineering Technical Reports Collection, Purdue University |
| Repository | Purdue University Libraries |
| Rights Statement | Digital object copyright Purdue University. All rights reserved. |
| Language | eng |
| Type (DCMI) | text |
| Format | JP2 |
| Date Digitized | 2008-09-22 |
| Capture Device | Fujitsu fi-5650c |
| Capture Details | ScandAll 21 |
| Transcript | ¦ i- ^f-tf^^- ' ' '• 7-.' '¦'^l' ¦ "'''/'"- ¦ ^- Development of the Magnesia-Base Pulping Process ',;*;, L. S. WILCOXSON • ^ Vice President in charge of Research and Development The Babcock and Wilcox Company There are many facets to the generic problem of Industrial Waste Disposal, as evidenced by the varied and comprehensive program ar¬ ranged for this Conference series. Regardless of the complexity of factors considered in any specific instance, one invariably arrives at the con¬ clusion that intelligent handling of the problem will result in one or more of the following desirable objectives: ' •' ,, • 1. Elimination of some form of nuisance or pollution. 2. Improvement in the economics of the process involved. 3. Conservation of important natural resources. Such an industrial waste problem has existed in the Acid Pulping Industry since the inception of the process in 1867. To date the great majority of acid-sulphite pulp has been produced using a calcium bi¬ sulphite cooking liquor for digestion of wood chips and the so-called "waste" liquor, which is separated from the pulp after the cooking operation, has been disposed of simply by discharging it into the stream or body of water adjacent to the mill. This "waste liquor" contains the lignins, extracted from the wood, as well as the chemicals used in the cooking operation in intricate chemi¬ cal combination. Such means of disposal not only results in complete loss of the lignins, calcium and a large portion of the sulphur used in the process, but this material when dumped into the streams causes a con¬ tamination and a reduction of the oxygen content of the water. Ob¬ viously the flow of water in the stream, and its ability to dissipate the "waste liquor", plays a large part in determining whether or not such pollution is detrimental and must receive careful consideration, along with the economics involved in the disposal problem, to determine whether or not elimination of this nuisance is advisable. ,- In the Sulphite Pulping Industry, it is estimated that a combined total of 17,000 tons of pulp is produced daily in the United States and Canada. To produce this quantity of pulp it is necessary to cook ap- |
| Resolution | 300 ppi |
| Color Depth | 8 bit |
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