US181405A - Improvement in the process of saving caustic alkali in the manufacture of paper-pulp - Google Patents
Improvement in the process of saving caustic alkali in the manufacture of paper-pulp Download PDFInfo
- Publication number
- US181405A US181405A US181405DA US181405A US 181405 A US181405 A US 181405A US 181405D A US181405D A US 181405DA US 181405 A US181405 A US 181405A
- Authority
- US
- United States
- Prior art keywords
- paper
- caustic alkali
- pulp
- manufacture
- 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
- 239000003518 caustics Substances 0.000 title description 8
- 239000003513 alkali Substances 0.000 title description 7
- 229920001131 Pulp (paper) Polymers 0.000 title description 6
- 238000004519 manufacturing process Methods 0.000 title description 6
- 238000000034 method Methods 0.000 title description 4
- 239000010902 straw Substances 0.000 description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 108010068370 Glutens Proteins 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 235000021312 gluten Nutrition 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012261 resinous substance Substances 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/14—Disintegrating in mills
- D21B1/16—Disintegrating in mills in the presence of chemical agents
Definitions
- my invention consists in a new process for preparing straw for paperpulp whereby the resinous substance or gluten of the straw is entirely destroyed, as will be hereinafter more fully set forth, the object of my invention being to save caustic alkali in the process of manufacturing paper-pulp by treating the material with lime, and passing it through heavy rollers before the caustic alkali is applied to it.
- the straw is first boiled in .weak lime-water until it becomes soft, when it is taken out and let lie for about thirty-six or forty hours. It is then passed between heavy weighted rollers and crushed. into a pulpy mass, whereby a large portion of the gluten is set free. The pulpy mass of straw is then washed and reduced'to what paper-makers call half stuff, or a coarse paper condition. After the straw has been thus reduced it is placed in a common rotary pressure-boiler and boiled in caustic alkali, made of soda'ash and lime. With caustic alkali two degrees strong and a pressure of steam of forty pounds to the square inch, the gummy, resinous, and other matters from which the fiber is to be set free, are entirely subdued ordestroyed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Description
TTED STATES PATENT OFFICE SAMUEL BROWN, OF GHILLIGOTHE, OHIO.
IMPROVEMENT IN THE PROCESS OF SAVING CAUSTIC ALKALI IN THE MANUFACTURE OF PAPER-PULP.
Specification forming part of Letters Patent No. 181,405, dated August 22,1876; application filed April 15, 1876.
To all whom it may concern:
Beit known that I, SAMUEL BROWN, 0f Ohillicothe, in the county of Ross, and State of Ohio, have invented a new and valuable Improvement in the Manufacture of Fine Paper-Pulp from Straw; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same.
The nature of my invention consists in a new process for preparing straw for paperpulp whereby the resinous substance or gluten of the straw is entirely destroyed, as will be hereinafter more fully set forth, the object of my invention being to save caustic alkali in the process of manufacturing paper-pulp by treating the material with lime, and passing it through heavy rollers before the caustic alkali is applied to it.
The straw is first boiled in .weak lime-water until it becomes soft, when it is taken out and let lie for about thirty-six or forty hours. It is then passed between heavy weighted rollers and crushed. into a pulpy mass, whereby a large portion of the gluten is set free. The pulpy mass of straw is then washed and reduced'to what paper-makers call half stuff, or a coarse paper condition. After the straw has been thus reduced it is placed in a common rotary pressure-boiler and boiled in caustic alkali, made of soda'ash and lime. With caustic alkali two degrees strong and a pressure of steam of forty pounds to the square inch, the gummy, resinous, and other matters from which the fiber is to be set free, are entirely subdued ordestroyed.
been boiled in lime-water, a large portion of the resinous matter is destroyed, while the remainder of such matter is pressed through the ordinary rag-engine,'to be washed and made into half stuff, which also opens the straw, so that the caustic alkali will act properly.
I am aware that the separate steps of the process claimed byme are not new, per se, and I therefore lay no claim to them taken separately.
What I claim as new, and desire to secure by Letters Patent, is
The within-described process for preparing straw for paper-pulp, consisting of the following stages, namely: boiling the straw in a weak solution of lime, crushing the same, reducing it in a rag-engine to half stud, and
then subjecting it under steam pressure to the action of caustic alkali, substantially as and for the purpose set forth.
SAMUEL BROWN.
Witnesses ALBERT D. JOHNSON, SAMUEL J oENsoN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US181405A true US181405A (en) | 1876-08-22 |
Family
ID=2250811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US181405D Expired - Lifetime US181405A (en) | Improvement in the process of saving caustic alkali in the manufacture of paper-pulp |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US181405A (en) |
-
0
- US US181405D patent/US181405A/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2904460A (en) | Continuous pulping process | |
| US1631834A (en) | Gelatinizing wood | |
| GB347096A (en) | Improvements in or relating to the manufacture of paper | |
| US223670A (en) | Manufacture of paper-pulp from wood | |
| US2528350A (en) | Two-step digestion of hardwoods | |
| US2528351A (en) | Alkaline sulfite digestion of hardwood | |
| US151662A (en) | Improvement in the processes for making paper-pulp from varieties of palm | |
| US1845487A (en) | Method for the production of pulp | |
| US1717798A (en) | Process of making pulp | |
| US2215353A (en) | Process of making fiberboard | |
| US610957A (en) | Karl andreas zschorner | |
| US1726078A (en) | Process for the production of cellulosic material | |
| US346887A (en) | William winslow bennett | |
| US53247A (en) | Improved process for disintegrating fibers | |
| US2018937A (en) | Paper pulp and method of making the same | |
| US130663A (en) | Improvement in treating asbestus and obtaining useful products therefrom | |
| US1327590A (en) | Process of repulping old or waste paper | |
| US1203511A (en) | Process of producing pulp for paper or the like. | |
| US720850A (en) | Process of manufacturing products from cornstalks or analogous plants. | |
| US1611969A (en) | Process for producing high-grade half stuff | |
| US1906088A (en) | Pulp treating process and the product | |
| US200085A (en) | Improvement in processes of obtaining fiber from wood for paper-pulp | |
| US1165062A (en) | Manufacture from cellulose of a fireproof substitute for excelsior for bedding and packing purposes. | |
| US629077A (en) | Fibrous stock and process of making same. | |
| USRE3907E (en) | Improvement ik the manufacture of paper |