US701271A - Process of reducing fibrous material to pulp. - Google Patents
Process of reducing fibrous material to pulp. Download PDFInfo
- Publication number
- US701271A US701271A US7041801A US1901070418A US701271A US 701271 A US701271 A US 701271A US 7041801 A US7041801 A US 7041801A US 1901070418 A US1901070418 A US 1901070418A US 701271 A US701271 A US 701271A
- Authority
- US
- United States
- Prior art keywords
- pulp
- chlorin
- reducing
- fibrous material
- improvement
- 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
- 238000000034 method Methods 0.000 title description 15
- 239000002657 fibrous material Substances 0.000 title description 8
- SURLGNKAQXKNSP-DBLYXWCISA-N chlorin Chemical compound C\1=C/2\N/C(=C\C3=N/C(=C\C=4NC(/C=C\5/C=CC/1=N/5)=CC=4)/C=C3)/CC\2 SURLGNKAQXKNSP-DBLYXWCISA-N 0.000 description 19
- 239000000463 material Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 14
- 241000609240 Ambelania acida Species 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 239000010905 bagasse Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005406 washing Methods 0.000 description 5
- 230000002745 absorbent Effects 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000005418 vegetable material Substances 0.000 description 4
- -1 chlorin compound Chemical class 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000004061 bleaching Methods 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 240000006240 Linum usitatissimum Species 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- 240000006394 Sorghum bicolor Species 0.000 description 1
- 235000011684 Sorghum saccharatum Nutrition 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
Definitions
- This invention relates to a process of reducing to a pulp absorbent fibrous vegetable materials.
- the present invention consists in a process of treatment whereby the whole of the fibrous material is separated into its ultimate fibers, thus producing a pulp of excellent quality. I have found that the pith of the material, if present, forms a gelatinous matter, which does not interfere With the laying of the fiber and improves the quality of the resulting pulp.
- the raw material if already damp, and by damp I mean permeated with moisture is subjected to the action of gaseous chlorin, which may be done by immersing the loose mass of material in a receptacle containing the chlorin gas.
- gaseous chlorin which may be done by immersing the loose mass of material in a receptacle containing the chlorin gas.
- the raw material has been dried previous to treatment by my process, it should be dampened before subjecting it to the action of the chlorin gas until it has absorbed a sufficient quantity of water to form, when acted upon by the chlorin gas, the hydrochloric acid and the chlorin compound already described.
- an immersion of the loose raw material in chlorin gas for a period of from half an hour to an hour will be sufficient to insure the proper separation of the fibers.
- the time will depend to some extent upon the coarseness of the fragments of the raw material and may be reduced by cutting, stripping, or breaking up the material previous to immersion in the chlorin gas.
- the Washed material may be subjected to the bleaching effect of aqueous chlorin or an alkaline hypochlorite until it is rendered white, and after the bleaching operation it is again washed.
- the material is then in a pulpy condition and requires but little beating, and it may then be laid by a suitable machine in the usual manner for the manufacture of the desired final product.
- That improvement in the art or method of reducing fibrous material to pulp which consists in dampening the material, immersing the dampened material in chlorin gas, and washing the product in water, as set forth.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Description
UNITED STATES PATENT Onricn.
CHARLES TENNANT LEE, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO BAGASSE PULP COMPANY, A CORPORATION OF MAINE.
PROCESS OF REDUCING FIBROUS MATERIAL TO PULP.
SPECIFICATION formingpart of Letters Patent No. 701,271, dated May 27, 1902.
Application filed July 31, 1901. Serial No. 70,418. (No specimens.)
T0 (ti/Z whom it may concern:
Be it known that I, OHARLEs TENNANT LEE, residing in Boston, county of Suffolk, and State of Massachusetts, have invented an Improvement in Processes of Reducing Fibrous Material to Pulp, of which the following description is a specification.
This invention relates to a process of reducing to a pulp absorbent fibrous vegetable materials.
I have found that by the process herein described excellent pulp can be made from bagasse, which is the crushed stalks or waste of sugar-cane or sorghum, or from waste flax, jute, cornstalks, and other vegetable materials having like absorbent and fibrous characteristics.
The present invention consists in a process of treatment whereby the whole of the fibrous material is separated into its ultimate fibers, thus producing a pulp of excellent quality. I have found that the pith of the material, if present, forms a gelatinous matter, which does not interfere With the laying of the fiber and improves the quality of the resulting pulp.
In accordance with the present invention the raw material if already damp, and by damp I mean permeated with moisture, is subjected to the action of gaseous chlorin, which may be done by immersing the loose mass of material in a receptacle containing the chlorin gas. I have found that one half of the chlorin molecule unites with the hydrogen of the water with which the material is permeated to form hydrochloric acid and the other half of the chlorin molecule unites with the intercellular matter of the material to form a soluble chlorin compound. Both of these are subsequently removed by washing, as hereinafter more fully described. If the raw material has been dried previous to treatment by my process, it should be dampened before subjecting it to the action of the chlorin gas until it has absorbed a sufficient quantity of water to form, when acted upon by the chlorin gas, the hydrochloric acid and the chlorin compound already described. Usually an immersion of the loose raw material in chlorin gas for a period of from half an hour to an hour will be sufficient to insure the proper separation of the fibers. The time will depend to some extent upon the coarseness of the fragments of the raw material and may be reduced by cutting, stripping, or breaking up the material previous to immersion in the chlorin gas. After the damp material has been thus subjected to chlorin gas it is removed therefrom and washed in water, which will remove the free chlorin, the chlorin compound, and the hydrochloric acid which are in the material. The Washed material may be subjected to the bleaching effect of aqueous chlorin or an alkaline hypochlorite until it is rendered white, and after the bleaching operation it is again washed. The material is then in a pulpy condition and requires but little beating, and it may then be laid by a suitable machine in the usual manner for the manufacture of the desired final product.
1. That improvement in the art or method of reducing fibrous material to pulp, which consists in dampening the material, immersing the dampened material in chlorin gas, and washing the product in water, as set forth.
2. That improvement in the art or method of reducing fibrous material to pulp, which consists in cutting, stripping or otherwise breaking up the material, dampening the same, and immersing the dampened material in chlorin gas, as set forth.
3. That improvement in the art or method of reducing fibrous material to pulp, which consists in cutting, stripping or otherwise breaking up the material, dampening the same, immersing the dampened material in chlorin gas, and washing the productin water, as set forth.
4. That improvement in the art or method of reducing absorbent fibrous vegetable material to pulp, which consists in subjecting such material when damp to the action of chlorin gas, substantially as and for the purpose described.
5. That improvement in the art or method of reducing absorbent fibrous vegetable material to pulp, which consists in dampening the material and then subjecting it to the action of chlorin gas, substantially as and for the purpose described.
6. That improvement in the art or method I of reducing fibrous material to pulp, which consists in subjecting such material when damp to the action of chlorin gas, washing the product in water, and subjecting the product to a bleaching agent, and again washing the same, substantially as described. I
7. That improvement in the art or method of reducing bagasse to pulp, which consists l in subjecting the bagasse when damp to the action of chlorin gas;-substantia1ly as described.
8. That improvement in the art or method of reducing bagasse to a pulp, which consists in dampening the bagasse and then subject- 15 ing it to the action of chlorin gas; substantially as described.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
CHARLES TENNANT LEE.
Witnesses:
HENRY J. LIVERMORE, J AS. J. MALONEY.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7041801A US701271A (en) | 1901-07-31 | 1901-07-31 | Process of reducing fibrous material to pulp. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7041801A US701271A (en) | 1901-07-31 | 1901-07-31 | Process of reducing fibrous material to pulp. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US701271A true US701271A (en) | 1902-05-27 |
Family
ID=2769802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US7041801A Expired - Lifetime US701271A (en) | 1901-07-31 | 1901-07-31 | Process of reducing fibrous material to pulp. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US701271A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2958622A (en) * | 1958-07-14 | 1960-11-01 | Little Inc A | Pulping process |
-
1901
- 1901-07-31 US US7041801A patent/US701271A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2958622A (en) * | 1958-07-14 | 1960-11-01 | Little Inc A | Pulping process |
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