PL7916B1

PL7916B1 - The method of producing wood pulp.

Info

Publication number: PL7916B1
Application number: PL7916A
Authority: PL
Filing date: 1926-06-15
Publication date: 1927-10-31

Description

Wynalazek niniejszy dotyczy sposobu traktowania drzewa w celu otrzymania miazgi drzewnej, a w szczególnosci szczap drzewnych.Wynalazek niniejszy polega na dalszem udoskonaleniu sposobu wyrobu miazgi drzewnej, który umozliwia tanszy wyrób miazgi w lepszym gatunku. Znaleziono mia¬ nowicie, ze dodajac do cieczy sluzacej do traktowania szczap drzewnych siarke skra¬ ca sie czas gotowania i (co nie moze byc jeszcze obecnie calkowicie wyjasnione) po¬ lepsza stan wlókien gotowanego drzewa oraz zabarwienie otrzymanej zen miazgi.W powyzszym celu, szczapy wklada sie do zbiornika gdzie traktuje sie je ciecza;, do której dodano siarki. Do cieczy lepiej dodawac poczatkowo lotne i inne rozpu¬ szczajace wyciagi z drzewa oraz potrzebny odczynnik chemiczny, nip. sode, potaz zracy, wapno lub t. p. ciala. Siarke moz¬ na rozpuscic bezposrednio w cieczy albo tez mozna ja najpierw rozpuscic w odpo¬ wiednim rozpuszczalniku, a potem dopie¬ ro wlac do cieczy. Przekonano sie jednak, iz w wielu wypadkach najlepiej jest wkla¬ dac siarke bezposrednio do zbiornika na¬ pelnionego drzewem przed lub podczas wlewania don cieczy, gdyz wówczas siarka rozpuszczajac sie w cieczy rozchodzi sie poprzez cala zawartosc zbiornika, wskutek czego oddzialywa skutecznie na traktowa¬ ne szczapy zmiekczajac je, rozpuszczajac i usuwajac lub rozprowadzajac zywice, li¬ gnin i inne skladniki otaczajace wlókno drzewne, dzieki czemu ulatwia sie dalszetraktowapi^ W czasie napelniania zbior¬ nika, cieoz lepiej obiega i spryskuje szcza¬ py* cza. Pb calkoiwiteln napelnieniu zbiornika, wytwarza sie w nim i utrzymuje przez pe¬ wien ograniczony okres czasu próznie, równa 381 lub 507 mm slupa rteci, w ce¬ lu usuniecia powietrza z zawartosci zbiornika. Podczas tej czynnosci krazenie i rozpryskiwanie cieczy zazwyczaj nie prze¬ rywa sie. Pa dokonaniu tego, do zbiornika wprowadza sie odpowiednia ilosc cieczy i podnosi temperature celem zakonczenia go¬ towania. Postepujac w sposób powyzszy zmniejsiza sie znacznie czasi potrzebny do gotowania drzewa i otrzymuje miazge o wlóknaah elastycznych i dobrem zabar¬ wieniu.Jak juz bylo powiedziane, nie mozna tu narazie wyjasnic przyczyny korzystnych wyników osiagnietych zapomoca sposobu niniejszego, trzeba jednak zaznaczyc, ze pomiedzy siarka i innemi skladnikami cie¬ czy nastepuja pewne reakcje w zetknieciu ze szczapami drzewa lub wewnatrz ich, wskutek czego wszelkie produkty tych re- akcyj moga swobodnie oddzialywac na skladniki wiazace wlókna drzewne, W ra¬ zie przygotowania cieczy jeszcze przed wprowadzeniem; jej do drzewa znajduja¬ cego sie w zbiorniku, reakcje powyzsze nie odbywajai sie w zetknieciu ze szczapami drzewnemi. Mozliwem jest ze okolicznosc powyzsza jest do pewnego stopnia przy¬ czyna otrzymanych wyników korzystnych, ale oczywiscie wynalazek niniejszy nie o- granicza sie bynajmniej do jakiejkolwiek teorji, która moznaby wziac za podstawe sposobu opisanego tutaj. PL PLThe present invention relates to a method of treating a tree to obtain a wood pulp, and in particular a wood chip. The present invention consists in a further improvement of the method of producing wood pulp, which allows a cheaper pulp production of a better grade. It has been found that by adding sulfur to the treatment liquid, the cooking time is reduced and (which cannot be fully explained yet) improved the condition of the fibers of the cooked tree and the color of the resulting zen pulp. they are put into a tank where they are treated with a liquid to which sulfur has been added. It is better to add to the liquid initially volatile and other dissolving extracts of the tree and the necessary chemical reagent, nip. soda, potash at work, lime or the body. The sulfur may be dissolved directly in the liquid, or it may first be dissolved in a suitable solvent and then poured into the liquid. It has been found, however, that in many cases it is best to pour sulfur directly into the tree-filled tank before or during pouring it into the liquid, because the sulfur dissolving in the liquid then spreads through the entire contents of the tank, and therefore has an effective effect on the treated water. the logs by softening them, dissolving and removing or spreading the resins, rinds and other constituents surrounding the wood fiber, making it easier for further treatment to melt. When filling the tank, the body circulates better and sprinkles the clove dust. The complete filling of the reservoir is made in the reservoir and maintained for a limited period of time, a vacuum equal to 381 or 507 mm of mercury column, in order to remove air from the reservoir contents. During this operation, the circulation and spraying of the liquid usually remain intact. Upon doing so, a suitable amount of liquid is introduced into the vessel and the temperature is raised to complete cooking. By proceeding in the above manner, the time needed for cooking the tree is significantly reduced and it obtains a pulp with elastic fibers and a good coloring. As already mentioned, it is not yet possible to explain the reasons for the favorable results obtained with the use of this method, but it should be noted that with the other components of the liquid, there are some reactions when they come into contact with or inside the logs of the tree, so that any products of these reactions are free to interact with the components that bind the wood fibers, if the liquid is prepared before addition; to the tree in the reservoir, the above reactions did not take place in contact with wood chips. It is possible that the above circumstance contributed to some extent to the favorable results obtained, but of course the present invention is by no means bound to any theory which may be taken as basis of the method described herein. PL PL

Claims

1. Patent claims. 1. A method of producing a wood pulp, characterized by the fact that the wood chips are boiled in a tank with a liquid containing dissolving plant extracts with the addition of sulfur.

2. The method of producing wood pulp according to claim 1, the significant point is that wood chips are mixed with a liquid containing volatile and other plant extracts and an admixture of sulfur.

3. The method of producing wood pulp according to claim 1. A method according to claim 1, characterized by the fact that the wood chips put into the tank are treated with a liquid containing a chemical reagent, e.g. sodium, potash or lime, and plant extracts in which sulfur is dissolved.

4. The method of producing wood pulp according to claims A method according to claim 1, characterized in that sulfur is added to the logs placed in the tank, the wood-liquid containing the extracts from the tree is passed through it and the logs are boiled with said liquid.

5. The method of producing wood pulp according to claims The method according to claim 4, characterized by adding elemental sulfur to the logs placed in the tank and then boiling said logs with a liquid obtained from sodium carbonate and lime.

6. The method of producing wood pulp according to the substitutes. A significant part of the cracks is mixed with sulfur in a tank, and a chemical reagent, e.g. soda, potash or lime in solution is added to them in order to cause a reaction with sulfur in contact with the logs and then digest the said cracks. .

7. The method of producing wood pulp according to claims It was characteristic that the wood chips were boiled in a tank with a liquid containing an admixture of elemental sulfur, dissolving tree extracts and alkali, because during cooking the reaction samples formed between sulfur, alkali extracts, which products are formed in contact with the logs.

8. The method of producing wood pulp - 7 - according to claim 7, characterized by the fact that the wood chips contained in the tank are treated in the presence of a reaction between elemental sulfur and a chemical reagent, e.g. soda, potash or lime, which is combined with sulfur, sulfur and a chemical reagent. they can act freely on the constituents that bind the logs in order to allow the determined reactions inside or in the presence of the logs before the reaction force of said bodies is nullified.

9. The method of producing wood pulp according to claims 8, characterized by the fact that wood chips are treated in a tank in the presence of a reaction between elemental sulfur and a chemical reagent, e.g. soda, potash or lime, combining with sulfur and added tree extracts, including sulfur, from The factor i) extracts are free to act on the components which bind the wood chips during the course of said reactions.

10. The method of producing wood pulp according to claims A method according to claim 9, characterized in that the elemental sulfur is mixed with a chemical reagent, for example with soda, caustic potassium or lime, without the access of air, and with the aid of the liquid obtained in this way, the wood chips contained in; tank and keeps them free of atmospheric air in order for said liquid to act on the binding components of the wood chips to free the wood fibers from the binding components during subsequent cooking.

11. The method of producing wood pulp according to claims 10, characterized by the fact that the elemental sulfur is combined with the reagent such that the reaction takes place inside the wood chips affecting the components that bind the tree in such a way that the wood fibers are released during cooking. Frederick Knapp Fish jr. Deputy: K. Czempinski, patent attorney. Printed by L. Boguslawski, Warsaw. PL PL