US219567A - Improvement in processes for making wood pulp - Google Patents
Improvement in processes for making wood pulp Download PDFInfo
- Publication number
- US219567A US219567A US219567DA US219567A US 219567 A US219567 A US 219567A US 219567D A US219567D A US 219567DA US 219567 A US219567 A US 219567A
- Authority
- US
- United States
- Prior art keywords
- wood
- pulp
- processes
- improvement
- wood pulp
- 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 14
- 238000000034 method Methods 0.000 title description 10
- 239000002023 wood Substances 0.000 description 26
- 238000000227 grinding Methods 0.000 description 16
- 239000002253 acid Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 12
- 150000007513 acids Chemical class 0.000 description 10
- 238000004061 bleaching Methods 0.000 description 10
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 description 8
- 229920002522 Wood fibre Polymers 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000002940 repellent Effects 0.000 description 6
- 239000005871 repellent Substances 0.000 description 6
- 239000002025 wood fiber Substances 0.000 description 6
- 239000001293 FEMA 3089 Substances 0.000 description 4
- 239000007844 bleaching agent Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- LEVONNIFUFSRKZ-UHFFFAOYSA-N 3-(carboxymethyl)-2,2-dimethylcyclobutane-1-carboxylic acid Chemical compound CC1(C)C(CC(O)=O)CC1C(O)=O LEVONNIFUFSRKZ-UHFFFAOYSA-N 0.000 description 2
- RSWGJHLUYNHPMX-ONCXSQPRSA-N Abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 description 2
- 235000009414 Elaeocarpus kirtonii Nutrition 0.000 description 2
- 235000013584 Tabebuia pallida Nutrition 0.000 description 2
- 240000005973 Tabebuia pallida Species 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000001464 adherent Effects 0.000 description 2
- -1 albumen Chemical class 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920000591 gum Polymers 0.000 description 2
- 229920001206 natural gum Polymers 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- 230000002087 whitening Effects 0.000 description 2
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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
Definitions
- My invention relates to the manufacture of wood pulp by grinding or abrasion, and has for its object the production of pulp so made which can be bleached like pulp made by chemical process; and it consists in removing from the wood before grinding it such of its natural constituents as prevent the bleaching from acting upon the Wood fiber to whiten it, and in so preparing the wood for grinding that the fibers separate much more easily, thus Wood pulp which is made by grinding it off from pieces of wood, in the usual manner, retains in its composition the constituent elements of the wood from which it was ground.
- the woods commonly used for making pulp are charged more or less with pitch or tar, which consists in variable proportions of tur pentine-oil, sylvic acid, and pinic acid.
- My improved process overcomes the aforesaid obstacles to bleachin g said pulp, and makes it a desirable material for the manufacture of white papers.
- What I claim as .my invention is The hereinbeforedescribed improved process for manufacturing white wood pulp from disintegrated wood fiber made by grinding the wood, which consists in first extracting the natural gums and acids from the wood; second, reducing said wood to pulp by grinding; and, third, in bleaching said ground pulp by" the application to it of chloride of lime or other suitable bleaching materials, substantially as set forth.
Landscapes
- Paper (AREA)
Description
. Massachusetts, have invented new and useful solution usually employed for this purpose facilitating this operation.
- the woody fiber as to render it impracticable UNITED STATES PATENT Orrucn.
CHARLES E. CARTER, OF LAWRENCE, MASSACHUSETTS.
IMPROVEMENT IN PROCESSES FOR MAKING WOOD PUL P.
' Specification forming part of Letters Patent No. 219,567, dated September 16, 1879; application filed August 16, 1879.
To all whom it may concern:
Be it known that I, CHARLES E. CARTER, of Lawrence, county of Essex, and State of Improvements in Processes for Making Wood Pulp, which improvements are fully set forth in the annexed specification.
My invention relates to the manufacture of wood pulp by grinding or abrasion, and has for its object the production of pulp so made which can be bleached like pulp made by chemical process; and it consists in removing from the wood before grinding it such of its natural constituents as prevent the bleaching from acting upon the Wood fiber to whiten it, and in so preparing the wood for grinding that the fibers separate much more easily, thus Wood pulp which is made by grinding it off from pieces of wood, in the usual manner, retains in its composition the constituent elements of the wood from which it was ground.
The woods commonly used for making pulp are charged more or less with pitch or tar, which consists in variable proportions of tur pentine-oil, sylvic acid, and pinic acid.
The above-named acids and oil, together with a certain quantity of albumen and salts natural to the wood, so envelop, so to speak,
to attempt to bleach pulp made by grinding wood in its natural state, as above set forth.
The said obstacles to bleaching-i. e., acids, oil, albumen, salts, &c.act as repellents to the chloride of lime and other materials used for that purpose, and such a degree of strength in the latter as would overcome said repellents would destroy the wood fiber; hence the impracticability of so attempting to bleach such pulp.
On account of the aforesaid difficulties the way of whitening ground wood pulp, its employment is limited in the manufacture of papers to those of dark or yellowish colors.
My improved process, as herein set forth, overcomes the aforesaid obstacles to bleachin g said pulp, and makes it a desirable material for the manufacture of white papers.
In practicing my process for the manufacture of bleachable ground wood pulp, I do not grind the wood in its natural state but I first prepare it for grinding by extracting from it by distillation, under such a Heat as will not injure its fiber, the above-named repellent elements, such as tar, turpentine-oil, acids, &c., which oppose the bleaching effects of chloride of lime, and after having so distilled the wood, I grind it in any of the well-known ways to reduoeit to pulp, after which it is susceptible of being easily bleached by chloride of lime and acid solutions of less strength than is required generally for bleaching rag pulp.
After wood has been subjected to such a degree of heat as will expel from it the aforesaid gum and acids and freed from their adherent qualities, the wood is much more easily ground than when in its natural state.
What I claim as .my invention is The hereinbeforedescribed improved process for manufacturing white wood pulp from disintegrated wood fiber made by grinding the wood, which consists in first extracting the natural gums and acids from the wood; second, reducing said wood to pulp by grinding; and, third, in bleaching said ground pulp by" the application to it of chloride of lime or other suitable bleaching materials, substantially as set forth.
CHARLES B. CARTER.
In presence of H. A. CHAPIN, WM. H. OHAPIN.
Publications (1)
Publication Number | Publication Date |
---|---|
US219567A true US219567A (en) | 1879-09-16 |
Family
ID=2288968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US219567D Expired - Lifetime US219567A (en) | Improvement in processes for making wood pulp |
Country Status (1)
Country | Link |
---|---|
US (1) | US219567A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018106206A1 (en) | 2016-12-06 | 2018-06-14 | Miroshnychenko Sergii | Movable x-ray apparatus for computer tomosynthesis |
-
0
- US US219567D patent/US219567A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018106206A1 (en) | 2016-12-06 | 2018-06-14 | Miroshnychenko Sergii | Movable x-ray apparatus for computer tomosynthesis |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6881299B2 (en) | Refiner bleaching with magnesium oxide and hydrogen peroxide | |
JP6474897B2 (en) | Process for producing treated pulp | |
US4160693A (en) | Process for the bleaching of cellulose pulp | |
DE1546276A1 (en) | Process for bleaching cellulosic material | |
DE10297032T5 (en) | Process for the production of cellulose | |
US5411635A (en) | Ozone/peroxymonosulfate process for delignifying a lignocellulosic material | |
US4347101A (en) | Process for producing newsprint | |
DE3518005A1 (en) | SULFITE DIGESTIVE METHOD FOR PRODUCING CELLULAR FROM LIGNOCELLULOSE-CONTAINING MATERIALS WITH RECOVERY OF THE DIGESTIVE CHEMICALS | |
US219567A (en) | Improvement in processes for making wood pulp | |
US1181553A (en) | Process of manufacturing paper-pulp. | |
US1387441A (en) | Process of producing cellulose | |
DE2444475A1 (en) | Ozonising paper stock without fluffing - in a gas reactor immediately following disintegration in rotary grinders at consistencies of 25 to 40 percent | |
Alén | Manufacturing cellulosic fibres for making paper: A historical perspective | |
US346887A (en) | William winslow bennett | |
US3617432A (en) | Delignifying lignocellulose with an incomplete soda cook followed by gaseous bleaching | |
US264168A (en) | Manufacture of paper-pulp and paper | |
DE834808C (en) | Process for bleaching mechanically produced fibrous materials that are difficult to bleach, especially wood pulp | |
US1560591A (en) | Process for making paper pulp | |
US629077A (en) | Fibrous stock and process of making same. | |
US1644447A (en) | Treatment of paper pulp | |
US323771A (en) | Manufacture of paper-pulp | |
US260749A (en) | Making and for textile and other purposes | |
US996225A (en) | Fiber-producing process and resulting fiber material. | |
US2932600A (en) | Process for the production of pulp from bagasse | |
US781612A (en) | Method of utilizing waste substances of the cotton-plant and product thereof. |