PL4428B1 - The method of processing sulphite lug. - Google Patents

The method of processing sulphite lug. Download PDF

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Publication number
PL4428B1
PL4428B1 PL4428A PL442824A PL4428B1 PL 4428 B1 PL4428 B1 PL 4428B1 PL 4428 A PL4428 A PL 4428A PL 442824 A PL442824 A PL 442824A PL 4428 B1 PL4428 B1 PL 4428B1
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PL
Poland
Prior art keywords
liquor
sulphite
mixture
processing
salt
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Application number
PL4428A
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Polish (pl)
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Publication date
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Publication of PL4428B1 publication Critical patent/PL4428B1/en

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Próbowano juz zuzytkowac odfugi siar¬ czynowe, otrzymywane w bardzo duzych ilosciach w fabrykach blonnika, przez zwe¬ glenie. Lecz zweglenie mozna bylo dotad przeprowadzac tylko przy wysokiem ci¬ snieniu, co wymagalo stosunkowo kosztow¬ nych urzadzen, oraz przy zuzyciu pewnej ilosci kwasów.Tymczasem stwierdzono, ze, azeby u- zyskac dostateczne zweglenie, mozna za¬ miast wysokiego cisnienia stosowac niz¬ sze cisnienie okolo 5—8 atmosfer jezeli odlug siarczynowy zostanie zmieszany z solami mineralnemi, w pierwszym rze¬ dzie z chlorkiem magnezu lub chlorkiem wapnia i nastepnie rozgrzany do tempera¬ tury 150—200° C, najlepiej do temperatu¬ ry 170—180° C. Substancja organiczna wydziela sie wtedy z lugu w postaci pro¬ szku weglowego. Dla ulatwienia filtrowa¬ nia lugu mozna dodawac troche odpadków drzewnych, wiórów, trocin, kory i t. p. cial. Dodatki te ulegaja takze zwegleniu.Duze powierzchnie tej weglowej substan¬ cji wywoluja adsorbcje mialkiego proszku weglowego, wydzielajacego sie z lugu i skutkiem tego otrzymuje sie plyny lub mie¬ szaniny, latwe do filtrowania. Rozczyn so¬ li po odfiltrowaniu wegla mozna stosowac ponownie.Przyklad. Na 100 czesci lugu siarczy¬ nowego, wyparowanego do % objetosci, dodaje sie 300 czesci skoncentrowanego lugu potasowego koncowego (lug chloro- magnezowy, zawierajacy siarczan magne¬ zu) wraz z 4Q0 czesciami trocin. Mieszani-he podgrzewa sie nastepnie w ciagu 10 go- * 4Z^ ^o 18Q°\ Ci- oddestylowujac okolo t lijra plynu^ prayczppi cisnienie wzrasta mniej wiecej do 6 atmosfer. Po usunieciu cisnienia oddziela sie przez filtrowanie substancje weglowa w postaci papki od rozczynu soli, w danym razie po odpowied- niem rozcienczeniu i wegiel suszy sie oraz spala go w paleniskach na pyl weglowy, Rozczyn soli zostaje przez odparowanie skoncentrowany do pierwotnej gestosci.Aby uniknac odparowania lugu siarczyno¬ wego nalezy z mieszaniny 400 czesci gora¬ cego lugu siarczynowego, 400 czesci roz¬ czynu solnego i 400 czesci odpadków drzewnych (trocin) oddestylowac wode, az do uzyskania powyzszego zgeszczenia.Podczas ogrzewania mieszaniny lugu siarczynowego, rozczynu solnego i trocin, wydzielaja sie kwasne opary, mianowicie kwas siarkawy i troche kwasu solnego, dzieki czemu mozna czesc kwasu siarkawe¬ go uzyskac zpowrotem. Przez dodanie kwa¬ sów mineralnych do mieszaniny, skladaja¬ cej sie z rozczynu solnego, odlugu siar¬ czynowego i materjalu roslinnego, ilosci wydzielonego kwasu siarkawego, kwasu o- ctowego, spirytusu drzewnego i t. p. che- mikalij zwiekszaja sie odpowiednio. PLAttempts have already been made to use sulfite flakes, obtained in very large amounts in fiber factories, by charring. But charring could so far only be carried out at high pressures, which required relatively expensive equipment, and with the use of a certain amount of acids. It has now been found that, in order to obtain sufficient charcoal, lower pressures may be used instead of high pressure. The pressure is about 5-8 atmospheres if the sulfite residue is mixed with mineral salts, first with magnesium chloride or calcium chloride, and then heated to 150-200 ° C, preferably 170-180 ° C. The organic matter then separates from the liquor in the form of coal powder. To facilitate filtering of the slurry, some wood scraps, shavings, sawdust, bark, etc. may be added. These additives are also charred. The large surfaces of this carbonaceous substance adsorb a fine coal powder that separates from the slurry, and as a result liquids or mixtures are obtained which are easy to filter. The salt dilution after filtering off the charcoal can be reused. Example. For 100 parts of the sulphite liquor, evaporated to% by volume, 300 parts of concentrated potassium final liquor (chloromagnesium liquor containing magnesium sulphate) are added together with 40 parts of sawdust. The mixture is then heated for 10 hours - * 4Z ^ ^ at 18 [deg.] C, and by distilling about this liquid liter, the pressure increases to about 6 atmospheres. After the pressure is released, the carbonaceous substances in the form of a slurry are separated from the salt solution by filtering, in this case when suitably diluted, and the carbon is dried and burned in coal-dust furnaces. The salt solution is concentrated to its original density by evaporation. The water should be distilled from a mixture of 400 parts of hot sulphite liquor, 400 parts of salt solution and 400 parts of wood waste (sawdust) until the above-mentioned jam is obtained. acid vapors, namely sulfuric acid and a little hydrochloric acid, so that some of the sulfuric acid can be recovered. By adding mineral acids to the mixture consisting of a salt solution, sulphite sediment and vegetable material, the amounts of sulfurous acid, acetic acid, wood spirit, etc., etc., are increased accordingly. PL

Claims (4)

Zastrzezenia patentowe. 1. Sposób przerabiania lugu siarczy¬ nowego przy wyrobie drzewnika, znamien¬ ny tern, ze lug siarczynowy w stanie normalnym lub zgeszczonym miesza sie z solami jak chlorek magnezu, sól kuchenna i t. p. cialami i ogrzewa mieszanine pod cisnieniem do temperatury 150—200° C.Patent claims. 1. The method of processing sulphite liquor in the production of woodwood, characterized by the fact that sulfite liquor in normal or dry state is mixed with salts such as magnesium chloride, table salt, etc. with the bodies and the mixture is heated under pressure to a temperature of 150-200 ° C. . 2. Sposób wedlug zastrz. 1, znamien¬ ny tern, ze do zgeszczonego lugu siarczy¬ nowego dodaje sie rozczyn soli, np. lug potasowy, lub wyparowana wode morska.2. The method according to claim A method according to claim 1, characterized by the addition of a salt dilution, for example potassium liquor, or evaporated seawater to the condensed sulphite liquor. 3. Sposób wedlug zastrz. 1 i 2, zna¬ mienny tern, ze do mieszaniny lugu siar¬ czynowego i rozczynu soli dodaje sie od¬ padki roslinne, przedewszystkiem odpadki drzewne, wióry, trociny, kore, slome i t. p. ciala, azeby ulatwic filtrowanie wydzielo¬ nego wegla.3. The method according to p. 1 and 2, the significant point is that vegetable waste, especially wood waste, shavings, sawdust, bark, straw, etc., is added to the mixture of sulphite liquor and salt solution, in order to facilitate the filtration of the carbon which has been released. 4. Sposób wedlug zastrz. 1—3, zna¬ mienny tern, ze dodaje sie kwasy mineral¬ ne (kwas siarczany, kwas solny i t. p- kwasy). Carl Gustav Schwalbe Zastepca: Cz. Raczynski, rzecznik patentowy. Druk L. Boguslawskiego, Warszawa. PL4. The method according to p. 1-3, a significant point in which mineral acids are added (sulphate acid, hydrochloric acid, etc.). Carl Gustav Schwalbe Deputy: Vol. Raczynski, patent attorney. Print by L. Boguslawski, Warsaw. PL
PL4428A 1924-11-06 The method of processing sulphite lug. PL4428B1 (en)

Publications (1)

Publication Number Publication Date
PL4428B1 true PL4428B1 (en) 1926-05-31

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