US125658A - Improvement in processes for bleaching paper pulp - Google Patents
Improvement in processes for bleaching paper pulp Download PDFInfo
- Publication number
- US125658A US125658A US125658DA US125658A US 125658 A US125658 A US 125658A US 125658D A US125658D A US 125658DA US 125658 A US125658 A US 125658A
- Authority
- US
- United States
- Prior art keywords
- pipe
- bleaching
- improvement
- processes
- engine
- 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
- 238000004061 bleaching Methods 0.000 title description 9
- 238000000034 method Methods 0.000 title description 3
- 229920001131 Pulp (paper) Polymers 0.000 title 1
- 239000000126 substance Substances 0.000 description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 or colored rags Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/12—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen combined with specific additives
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/39—Organic or inorganic per-compounds
- C11D3/3902—Organic or inorganic per-compounds combined with specific additives
- C11D3/3937—Stabilising agents
- C11D3/394—Organic compounds
Definitions
- v"back fall a. provided with hinged covers, b,'and a pipe for such as used for the prepa- B, and rIhe vat of the engine is to be carrying off the gases from the engine, and
- 'llrcre' is a rotary or other suitable blower, C, for foreing a current of air through a pipe, D, into the engine and near the bottom thereof.
- a rotary or other suitable blower, C for foreing a current of air through a pipe, D, into the engine and near the bottom thereof.
- the chemicals to be hereinafter described are put into a vessel, G', which com municates, by a vertical pipe, E','with the blastpipe D, from theblower.
- the pipe E is provided with a stopper, F, or other equivalent stopper, valve, or cock.
- the delivery end of the pipe E extends into the pipe D, and for a short distance within it and oi' less diameter, and concentric with the pipe D, so that the blast of air may pass around the inner pipe E.
- the delivery end of this pipe E should be above the level 'of the pulp in .the engine.
- the pulp or other fibrous matter to be bleached is put into the engine with a weak solution of chlorine liquor of one-eighth of a degree Baume, or Jupward, depending upon the material to be bleached, as some fibrous substances require a greater strength than half a degree.
- This charge I prefer to work in the engin from ten to twenty minutes before ap- Y plying the blast of air with other chemicals.
- the other/,chemical agents are charged into the vessel G, as follows: For the bleaching of six hundred pounds of pulp made from wood, I take about three pounds of oxalic acid dissolved in about six gallons of hot water.
- the stopper F is opened to permit the liquor to flow intoj the blast-pipe D, where it is acted upon by the current of air, which vaporizes it, and the air so charged is forced into 4 the engine, and the blast continued forabout half an-hour.
- the blast is then stopped, the cover of the engine removed, and thel engine continued inoperation until the. bleaching is completed.
- the aperture in the bottom of the vessel G, leading intov the pipe, should be small, so that the charge will take about fteen minutes to pass through.
- the gases which escape from the vat of the en gine through the4 escape-pipe are, by thesaid pipe, delivered into any suitable chamber, and there utilized for bleaching yarns, or described, for bleaching brous substances by abrcs suspended therein.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
Description
FIPSU? mproyement in,Process for Bleaching Paper PuIQ,-;Q ParentedAprnmyiaz.
Yup
laaste UNITED STATES PATENT OFFICE.
JOHN CAMPBELL, OE OHAT'EAM lvILLAeENEw YORK.
IMPROVEMENT lN PROCESSES FOR BLEACHING PAPER PULP.
Specification forming part of Letters Patent No.125,658, dated April 16, 1872.
' Specification describing certain Improve- In, the said drawingArepresents Van ordinary beatingen gine,
l tion of pulp, with rotating beaters,
v"back fall a. provided with hinged covers, b,'and a pipe for such as used for the prepa- B, and rIhe vat of the engine is to be carrying off the gases from the engine, and
leading them into a chamber, to be utilized in the bleaching of yarns, fabrics, &c. 'llrcre'is a rotary or other suitable blower, C, for foreing a current of air through a pipe, D, into the engine and near the bottom thereof. I prefer d 'to locate this pipe soas to discharge the eurrent of air inthe direction in which the pulp is caused to travel in the vat of the engine; and .there may be4 two such blowers, one-at each end. The chemicals to be hereinafter described are put into a vessel, G', which com municates, by a vertical pipe, E','with the blastpipe D, from theblower. The pipe E is provided with a stopper, F, or other equivalent stopper, valve, or cock. The delivery end of the pipe E extends into the pipe D, and for a short distance within it and oi' less diameter, and concentric with the pipe D, so that the blast of air may pass around the inner pipe E. The delivery end of this pipe E should be above the level 'of the pulp in .the engine.
The pulp or other fibrous matter to be bleached .is put into the engine with a weak solution of chlorine liquor of one-eighth of a degree Baume, or Jupward, depending upon the material to be bleached, as some fibrous substances require a greater strength than half a degree. This charge I prefer to work in the engin from ten to twenty minutes before ap- Y plying the blast of air with other chemicals. The other/,chemical agents are charged into the vessel G, as follows: For the bleaching of six hundred pounds of pulp made from wood, I take about three pounds of oxalic acid dissolved in about six gallons of hot water.
"llo this solution I add four pounds of porous alumina, freed from iron, previously dissolved in three gallons of hot water; and I then add half an ounce of bromine previously combined with half a gallon of chlorine liquor, such as put into the engine with the pulp.
After the above compound has been charged into the vessel Gr the blower is` started, and
then the stopper F is opened to permit the liquor to flow intoj the blast-pipe D, where it is acted upon by the current of air, which vaporizes it, and the air so charged is forced into 4 the engine, and the blast continued forabout half an-hour. The blast is then stopped, the cover of the engine removed, and thel engine continued inoperation until the. bleaching is completed.
The aperture in the bottom of the vessel G, leading intov the pipe, should be small, so that the charge will take about fteen minutes to pass through. y
I have above described what Ideem the bestyngredients and proportions thereof, and mode ot' treatment for bleaching six hundred pounds of pulp made from wood; but I do not wish to be understood as limiting my claim of invention to speeiiie ingredients and proportions, as other equivalent acids may be substituted, and for some kinds of fibrous substances, such as cotton-waste, flax-waste, or colored rags, sulphuric acid would be preferable to oxalic, and so with hydrochloric acid, and so as to the other ingredients.
When applying my said process to the bleaching of yarns and woven, knitted, or felted fabrics, the engine must be adapted thereto by removing the back fall a', and beaters B, and
. substituting any suitable agitator.
The gases which escape from the vat of the en gine through the4 escape-pipe are, by thesaid pipe, delivered into any suitable chamber, and there utilized for bleaching yarns, or described, for bleaching brous substances by abrcs suspended therein. the use ot' bromine in connection with the othhave discovered that by the use of broer chemical agents specified mine, vegetable colors are readily discharged having like properties. from brous substances. JOHN CAMPBELL.
at I claim as my invention, and desire to l'Witllessess secure by Letters Patent, is A. J. DE LACY,
The process, substantially as herein-above -WM. SCOTT.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US125658A true US125658A (en) | 1872-04-16 |
Family
ID=2195086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US125658D Expired - Lifetime US125658A (en) | Improvement in processes for bleaching paper pulp |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US125658A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2461105A (en) * | 1946-01-01 | 1949-02-08 | Bloch Rudolf | Bleaching of cellulosic matter |
| US3150919A (en) * | 1960-05-25 | 1964-09-29 | Menachem Lewin | Fire-proofing lignocellulosic structures with bromine and chlorine compositions |
| US4096029A (en) * | 1976-04-26 | 1978-06-20 | The Dow Chemical Company | Cellulosic pulp delignification using an acidic bromine-chlorine mixture |
-
0
- US US125658D patent/US125658A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2461105A (en) * | 1946-01-01 | 1949-02-08 | Bloch Rudolf | Bleaching of cellulosic matter |
| US3150919A (en) * | 1960-05-25 | 1964-09-29 | Menachem Lewin | Fire-proofing lignocellulosic structures with bromine and chlorine compositions |
| US4096029A (en) * | 1976-04-26 | 1978-06-20 | The Dow Chemical Company | Cellulosic pulp delignification using an acidic bromine-chlorine mixture |
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