DE397604C - Process for the preparation of products containing chlorine from pulp waste liquors - Google Patents
Process for the preparation of products containing chlorine from pulp waste liquorsInfo
- Publication number
- DE397604C DE397604C DEST34991D DEST034991D DE397604C DE 397604 C DE397604 C DE 397604C DE ST34991 D DEST34991 D DE ST34991D DE ST034991 D DEST034991 D DE ST034991D DE 397604 C DE397604 C DE 397604C
- Authority
- DE
- Germany
- Prior art keywords
- preparation
- pulp waste
- waste liquors
- products containing
- containing chlorine
- 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
Links
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title claims description 8
- 239000000460 chlorine Substances 0.000 title claims description 8
- 229910052801 chlorine Inorganic materials 0.000 title claims description 8
- 239000002699 waste material Substances 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 3
- 238000002360 preparation method Methods 0.000 title claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 16
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims description 6
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 229940059864 chlorine containing product ectoparasiticides Drugs 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 10
- 239000000047 product Substances 0.000 description 8
- 239000002244 precipitate Substances 0.000 description 3
- 238000004448 titration Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 150000001804 chlorine Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07G—COMPOUNDS OF UNKNOWN CONSTITUTION
- C07G1/00—Lignin; Lignin derivatives
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/24—Chemical tanning by organic agents using lignin derivatives, e.g. sulfate liquor
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Paper (AREA)
Description
Verfahren zur Darstellung von chlorhaltigen Produkten aus Zellstoffabf@ Es ist beobachtet worden, daß die durch Behandeln mit gasförmigem Chlor entstandenen Derivate der in Zellstoffablaugen enthaltenen organischen Substanzen Neigung zur Salzsäureabspaltung zeigen.Process for the preparation of products containing chlorine from pulp waste @ It has been observed that those produced by treatment with gaseous chlorine Derivatives of the organic substances contained in pulp waste liquors tend to Show hydrochloric acid elimination.
Es hat sich gezeigt, daß diese Eigenschaft dadurch beseitigt wird, daß man das Chlorierungsprodukt mit Chlorat und Salzsäure behandelt.It has been shown that this property is eliminated by that the chlorination product is treated with chlorate and hydrochloric acid.
Es wurde gefunden, daß auch andere Oxydationsmittel, wie Chlorkalk und Salzsäure, Salpetersäure, Wasserstoffsuperoxyd, Ozon, Kaliumpermanganat usw. die gleiche Wirkung wie Chlorat und Salzsäure haben. Man arbeitet zweckmäßig in der Weise, daß man die Ablauge so lange mit gasförmigem Chlor unter allmählicher Steigerung der Temperatur behandelt, bis der entstehende Niederschlag kein Chlor mehr aufnimmt und läßt dann nach Abtrennung der Flüssigkeit eine weitere Behandlung mit den genannten Oxydationsmitteln folgen.It has been found that other oxidizing agents, such as chlorinated lime and hydrochloric acid, nitric acid, hydrogen peroxide, ozone, potassium permanganate, etc. have the same effect as chlorate and hydrochloric acid. One works appropriately in the way that the waste liquor for so long with gaseous chlorine under gradual Increase the temperature treated until the resulting precipitate does not contain chlorine absorbs more and then leaves a further treatment after separation of the liquid with the oxidizing agents mentioned.
Beispiel: iooo kg Dicklauge mit 700 kg Trockengehalt werden mit 5oo kg Wasser verdünnt und in der Kälte mit Chlor behandelt. Wenn die Aufnahme nachläßt, wird die Temperatur auf etwa 7o° gesteigert, bis das anfangs schleimige braune Produkt filtrierbar wird. Der Chlorgehalt ist hierbei auf etwa 23 Prozent gestiegen. Nach Abtrennen der Flüssigkeit wird der Nie- derschlag mit der gleichen Gewichtsmenge 45prozentiger Salpetersäure in der Hitze behandelt. Der durch Zusatz von Salzsäure ausgeschiedene, noch längere Zeit mit der Reaktionsflüssigkeit erwärmte Niederschlag besitzt nach dem Abkühlen- und Trocknen einen Chlorgehalt von 26,6 Prozent. Das Produkt wird hellgelb und spaltet keine Säure ab, was sich auf folgende Weise feststellen läßt Es wird in der Kälte eine iprozentige Lösung des Produktes hergestellt und durch Titration die zur vollständigen Neutralisation notwendige Menge Alkalifestgestellt. 0,5 g Produkt verbraucht hierbei 23,5 ccm 1/1o n-Natronlauge. Eine zweite Probe wird vor der Titration eine Stunde im Wasserbad auf 7o' erhitzt und nach dem Erkalten wieder. titriert. 0,5 g Produkt verbraucht hierbei 23,5 ccm 1/1a n-Natronlauge zur vollständigen Neutralisation. Eine Abspaltung von Salzsäure war also nicht eingetreten. Verwendet man dagegen zur Titration ein nicht nachbehandeltes Produkt, so verbrauchen z. B. o,5 g vor dem Erhitzen 18 ccm 1;1o n-Natronlauge, nach einstündigem Erhitzen 2o ccm l/Io n-Natronlauge. Es hat also in diesem Falle eine Salzsäureabspaltung stattgefunden.Example: 100 kg thick liquor with 700 kg dry content are diluted with 500 kg water and treated with chlorine in the cold. When the uptake ceases, the temperature is increased to about 70 ° until the initially slimy brown product can be filtered. The chlorine content has risen to around 23 percent. After separating the liquid, the precipitate is treated with the same amount by weight of 45 percent nitric acid in the heat. The precipitate separated out by the addition of hydrochloric acid and warmed up with the reaction liquid for a longer period of time has a chlorine content of 26.6 percent after cooling and drying. The product becomes light yellow and does not split off any acid, which can be determined in the following way: A 1% solution of the product is prepared in the cold and the amount of alkali necessary for complete neutralization is determined by titration. In this case, 0.5 g of product consumes 23.5 ccm of 1/10 n sodium hydroxide solution. A second sample is heated to 70 'in a water bath for one hour before the titration and again after cooling. titrated. In this case, 0.5 g of product consumes 23.5 ccm of 1/1 n sodium hydroxide solution for complete neutralization. Hydrochloric acid was therefore not split off. If, on the other hand, a non-aftertreated product is used for titration, z. B. 0.5 g before heating 18 ccm 1; 1o n-sodium hydroxide solution, after one hour heating 2o ccm 1/10 n-sodium hydroxide solution. In this case, hydrochloric acid was split off.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST34991D DE397604C (en) | 1921-09-25 | 1921-09-25 | Process for the preparation of products containing chlorine from pulp waste liquors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST34991D DE397604C (en) | 1921-09-25 | 1921-09-25 | Process for the preparation of products containing chlorine from pulp waste liquors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE397604C true DE397604C (en) | 1924-06-24 |
Family
ID=7462206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEST34991D Expired DE397604C (en) | 1921-09-25 | 1921-09-25 | Process for the preparation of products containing chlorine from pulp waste liquors |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE397604C (en) |
-
1921
- 1921-09-25 DE DEST34991D patent/DE397604C/en not_active Expired
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