Full resolution (JPEG) - On this page / på denna sida - By-products in the sulphite and sulphate wood pulp industries
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be able to supply at least (500,000 kgs (600 tons) methyl alcohol, 1,000,000 kgs (1,000
tons) turpentine and 4,000,000 kgs (4,000 tons) liquid resin per 3rear. These products
are extracted from, perhaps, only one half of the sulphate manufacture, and are sold
in a more or less pure state.
If D:r Rinman’s lye-recovering method, which is now being experimented on by
the Pappersmassekontoret, be employed, there will be obtained per ton cellulose: ‘20 kgs
methyl alcohol, 50 kgs acetone, 50 kgs light oil and 50 kgs heavy oil, or, for the
industry as a whole, 4,000,000 kgs (4,000 tons) methyl alcohol, 10,000,000 kgs (10,000
tons) acetone, 10,000,000 kgs (10,000 tons) light oil, 10,000,000 kgs (10,000 tons) heavy
oil, every year. The by-products, therefore, which can be obtained, by processes already
known, represent a national asset, hitherto almost entirely neglected, of a value of
many millions of pounds sterling annually.
Take, for example, the single product methyl alcohol, for which, in a pure state,
there is paid 6 Swedish Kronor (6 sh 8 d) and more. The total possible production
of this (6,000,000 kgs or 6,000 tons) would have a value of 36.000,000 Kronor or
£ 2,000,000, but if it be further manufactured into formaline or backelite, this figure
would, of a certainty, become many times greater.
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