Scientific American, Volume 22, No. 1, January 1, 1870: A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures.Various
Science
Scientific American, Volume 22, No. 1, January 1, 1870: A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures.
Various
Science -- Periodicals; Technology -- Periodicals
"Reaching the Cane shed, the crop, dumped into piles, is received by a
crowd of feeders, who place it (eight or ten stalks at a time) on the
cane carrier. This is an elevator, on an endless band of wood and iron,
which carries them to the second story, where the stalks drop between
the rollers. An immense iron tank below, called a juice box, receives
the liquid portion, and another elevator bears the bruised and broken
fragments to the opposite side of the building, where they are dropped
into the bagasse burner.
"This invention, at its introduction, caused more scientific inquiry
and dispute, probably, than any other of the age, and settled beyond
question the possibility of combustion, without the use of atmospheric
air. The process consists in dropping the wet, spongy mass into a fire
of wood or coal, and closing the furnace doors. The steam arising from
the drying matter passes to a chamber in the rear, where, by the intense
heat, it is decomposed. Oxygen and hydrogen (both strong combustibles)
unite with the carbon, reaching there in the form of smoke, and a white
heat is the result.
"Cane juice, as it escapes from the mill, could scarcely be considered
inviting to either palate or vision. The sweet, slimy mass of fluid,
covered with foam, and filled with sticks, has more the appearance of
the water in a brewer's vat than anything which now suggests itself. A
small furnace, containing a quantity of burning sulphur, sends through a
tube a volume of its stifling fumes, and these, caught by jets of steam,
thoroughly impregnate the contents of the juice box. Having received its
first lesson in cleanliness, the liquid now rises through a tube to the
series of clarifiers on the second floor. They are heated by a chain of
steam pipes running along the bottom, and being filled, the juice slowly
simmers Much of the foreign substance rises in a scum to the surface
and is skimmed off by the sugar maker. It is further purified by the
addition of Thomaston or what is called sugar lime. At one half a peck
is considered sufficient for seven hundred and fifty gallons of juice,
but much depends upon the quantity of saccharine matter it contains.
Another set of pipes now permit the liquor to run into the evaporators,
in the boiling room below. These are also heated by circles of steam
pipes, and the liquid is first gently simmered, to enable any additional
foreign substance to rise to the surface and be skimmed off.
"After that the steam is turned on fully, and the juice boils until
it reaches the solidity of twenty-five degrees, as measured by the
saccharometer. This point attained, more pipes conduct it to a series
of square iron tanks called filterers. Each is provided with a false
bottom, covered with thick woolen blankets, and through these the juice
slowly drips into an immense iron vessel called a sirup tank.
Public-domain text, read in full here on John Shaqi.
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