SE466156B - SETTING AND CONSTRUCTION FOR MANUFACTURING ENGINE SPRING OF CELLULOUS WASTE AND WASTE MATERIALS - Google Patents

Description

'Ã66 156 2 10 15 25 30 35 In some cases, it may be beneficial to slurry the divided the paper into a pumpable mass, which is then pumped to defibration, but this step is generally unnecessary.

For defibration, an ordinary disk refiner gives a good result, but a turbo refiner according to Asplund has proven to be special suitable and give a very good defibration.

From the defibrator, the pulp is led to a tank 6 and then filtered 7. Mass screens of various kinds were used in the cellulose industry and most of the standard strainers have proven useful. At the sieve separates larger particles, some plastic fragments, etc. which can be traced back to the defibration or together with the mesh the remains went to briquetting.

After concentration in a dewaterer 8, the mass is led to a rolys 9, where the cellulose is broken down into sugars. The hydrolysis can be made with any acid, sulfuric acid, hydrochloric acid, formic acid, sulfuric acid dioxide, etc. or also enzymatically. An enzymatic degradation with the immobilized enzymes that have been shown to be beneficial, both in terms of results and finances.

In a storage tank 10, the pH is adjusted to a suitable for fermentation. value by neutralization with, for example, lime. Fermented The fermentation takes place in large yeasts where the constituent sugars are fermented to ethanol.

The mash is purified 12 from solids with sieves, filters, centrifuges trifuges or cyclones and the clarified solution is led to distillation 13.

The contaminants present in the mash do not interfere with the fermentation, as they are largely inert under the prevailing conditions, such as lignin, paper fillers, kaolin, titanium white, barite white, etc., waxes, plasters m.m. Admittedly, some patches can dissolve something in the alcohols formed, but this has no effect on the distillation. 10 15 3 466 156 The mash residues from the clarification go to a briquette press l4, where they possibly together with the solids of the sieves 7 pressed into briquettes, which after drying can be used as fuel. The amount of non-combustible fillers in the briquettes depends on it the raw material included and can vary between a few and several tens percent, but generally the briquettes get a good fuel value.

Yeast may also be recovered from the mash residues.

The distilled ethanol contains in addition to a few percent water also methanol, higher alcohols and esters and it can be used turn directly into engines possibly after drying to reduce water content. At least a portion of the residue after distillation can be passed back to the fermentation ll for further fermentation or fermented separately and then cleaned and go to the drain.

Claims (7)

466 156 10 15 20 25 30 35 P a t e n t k r a v Plant for the production of alcohol from paper waste and disposal of the residues, characterized in that it consists of a fragmentator (l) for atomizing the waste paper, a treatment plant (2) for removing iron and other metals and for sifting the pulverized material , refiner (5) for defibration, hydrolyzer (9) for decomposition of the cellulose into simpler sugars, fermenter (ll) for fermentation of the simpler sugars for alcohol and a distillation plant (13) for distillation of the alcohol. Plant according to claim 1, of sieves (7, 12) or other separators after the refiner (5) and / or after the fermenter (II). k ä n n e t e c k n a d Plant according to claim 1 or 2, characterized in that a briquette press (14) for the separated material is arranged after the first sihemnßßh ochßakïemmden fi an fi m fi asàüem fi CI2 ¥ @>, 4. Methods of making alcohol from paper waste containing paper, cardboard, cardboard and / or corrugated cardboard, laminated or laminated with plastic and / or wax, carbon paper, advertising materials of various kinds and other cellulosic materials, characterized in that: the paper waste is pulverized, cleaned and defibrated, cellulose in the waste is hydrolyzed to simpler sugars which are fermented and the alcohol formed is distilled off. 5. A method according to claim 4 or 5, characterized in that solid materials are separated before the hydrolysis and / or after the fermentation. 6. A method according to any one of the preceding claims, characterized in that separated, solid material is pressed into briquettes. 466 156 7. A method according to any one of the preceding claims, characterized in that the distilled alcohol is further treated for drying and / or removal of other substances.