US123757A - Improvement in the manufacture of paper-pulp - Google Patents
Improvement in the manufacture of paper-pulp Download PDFInfo
- Publication number
- US123757A US123757A US123757DA US123757A US 123757 A US123757 A US 123757A US 123757D A US123757D A US 123757DA US 123757 A US123757 A US 123757A
- Authority
- US
- United States
- Prior art keywords
- pulp
- paper
- manufacture
- improvement
- boilers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229920001131 Pulp (paper) Polymers 0.000 title description 6
- 238000004519 manufacturing process Methods 0.000 title description 6
- 238000009835 boiling Methods 0.000 description 12
- 210000000038 chest Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000003513 alkali Substances 0.000 description 6
- 239000003518 caustics Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 240000003917 Bambusa tulda Species 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001148717 Lygeum spartum Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
Definitions
- My invention relates to the process of pulping the paper-stock; and consists in subjecting the same to the action of a weak solution of caustic alkali previous to the operation of boiling, which latter is thereby more quickly and cheaply eflected. and in the arrangement of lyevat, steeping-chests, and boilers.
- Figure 1 represents a longitudinal section of a building, showing the arrangement of the vat, chests, and boilers.
- Fig. 2 is a transverse section of the same.
- the building represented has three stories.
- a tank, 0, for containing a weak alkaline solution said tank being provided with faucets c c at either end directly above openings in the steeping-chests A A in the story below.
- These chests are hung upon horizontal axes, upon which they may revolve, and each is provided with two opposite openings covered by suitable heads a a, closing water-tight.
- B B In the lower story, beneath the steeping-chests, are two cylindrical boilers, B B, hung upon journals b b b b so as to revolve end over end.
- the axles are hollow, and connected through stuffing-boxes with pipes, whereby steam or water is conducted to the boilers for boiling or washing the stock.
- Faucets d d are inserted in the lower ends for drawing off the liquid, the heads being removed when the contents are taken out.
- the engine-room is supposed to be at E. Proper arrangements of shafts, belts, and pulleys are made, whereby the boilers B B are revolved, and the other machinery of the mill put in operation.
- the process is as follows: The straw, esparto grass, bamboo, or other fibrous material to be reduced to pulp, in proper condition, is placed in the steeping-chests A A, where it is covered with a weak solution of caustic alkali drawn from the tank (J, and allowed to steep without heat from three to six hours, more or less. This steeping partially separates the fibers, and greatly assists the boiling process. It is then emptied into the boilers B B in a stronger alkaline solution, and boiled until it becomes thoroughly disintegrated and freed from silica. The liquid is then drawn off, and
- the boiled stock 'or pulp is then washed in clear water, admitted to the boilers through the axles, after which the heads are removed and the pulp discharged into cars or barrows which are run under the boilers. It is then treated by bleaching, 8210., in the ordinary manner.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Description
AYMLZASM. F. W. ZANDERS.
Improvement in the Manufacture of Paper Pulp.
No.123,757 Patented Feb. 13, 1372.
l r flfiwazflizw.
F. W. ZANDERS.
Improvement in the Manufacture of Paper Pulp.-
No.l23, 75 7. I Patented Feb. 13,1872.
Fig. 8.
UNITED STATES PATENT OFFICE.
FREDERICK W. ZANDERS, OF ERFURT, GERMANSL ASSIGNOR TO HIMSELF AND JULIUS H. TIEMANN, OF NEW YORK CITY.
IMPROVEMENT IN THE MANUFACTURE OF PAPER-PULP.
Specification forming part of Letters Patent No. 123,757, dated February 13, 1872.
SPECIFICATION.
. To all whom it may concern:
Be it known that I, FREDERICK WILLIAM ZANDERS, of Erfurt, in the Empire of Germany, (but who have declared my intention of becomin g a citizen of the United States,) have in vented a new and useful Improvement in the Manufacture of Paper-Pulp; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing making part of this specification.
My invention relates to the process of pulping the paper-stock; and consists in subjecting the same to the action of a weak solution of caustic alkali previous to the operation of boiling, which latter is thereby more quickly and cheaply eflected. and in the arrangement of lyevat, steeping-chests, and boilers.
Figure 1 represents a longitudinal section of a building, showing the arrangement of the vat, chests, and boilers. Fig. 2 is a transverse section of the same.
The building represented has three stories. In the upper story is placed a tank, 0, for containing a weak alkaline solution, said tank being provided with faucets c c at either end directly above openings in the steeping-chests A A in the story below. These chests are hung upon horizontal axes, upon which they may revolve, and each is provided with two opposite openings covered by suitable heads a a, closing water-tight. In the lower story, beneath the steeping-chests, are two cylindrical boilers, B B, hung upon journals b b b b so as to revolve end over end. The axles, are hollow, and connected through stuffing-boxes with pipes, whereby steam or water is conducted to the boilers for boiling or washing the stock. Faucets d d are inserted in the lower ends for drawing off the liquid, the heads being removed when the contents are taken out. The engine-room is supposed to be at E. Proper arrangements of shafts, belts, and pulleys are made, whereby the boilers B B are revolved, and the other machinery of the mill put in operation.
The process is as follows: The straw, esparto grass, bamboo, or other fibrous material to be reduced to pulp, in proper condition, is placed in the steeping-chests A A, where it is covered with a weak solution of caustic alkali drawn from the tank (J, and allowed to steep without heat from three to six hours, more or less. This steeping partially separates the fibers, and greatly assists the boiling process. It is then emptied into the boilers B B in a stronger alkaline solution, and boiled until it becomes thoroughly disintegrated and freed from silica. The liquid is then drawn off, and
may be used for steeping a quantity of fresh material. The boiled stock 'or pulp is then washed in clear water, admitted to the boilers through the axles, after which the heads are removed and the pulp discharged into cars or barrows which are run under the boilers. It is then treated by bleaching, 8210., in the ordinary manner.
I claim as my invention 1. The process of steeping the paper-stock in a weak solution of caustic alkali of the ordinary temperature previous to the operation of boiling, substantially as set forth.
2. The arrangement of the lye-tank O, steep ing chest or chests A, and boiler or boilers B, substantially as described.
Flt. WM. ZANDERS.
Witnesses:
A. F. PIGKENS, E. L. TIEMANN.
Publications (1)
Publication Number | Publication Date |
---|---|
US123757A true US123757A (en) | 1872-02-13 |
Family
ID=2193191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US123757D Expired - Lifetime US123757A (en) | Improvement in the manufacture of paper-pulp |
Country Status (1)
Country | Link |
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US (1) | US123757A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2645275A (en) * | 1951-04-27 | 1953-07-14 | George L Wong | Fisherman's lounging seat |
-
0
- US US123757D patent/US123757A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2645275A (en) * | 1951-04-27 | 1953-07-14 | George L Wong | Fisherman's lounging seat |
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