This
reservoir, which is of boiler plate, is furnished with a cover, D, which
has in its center a piece of tubing, with stop-cock, C. A series of
tubes, R, whose diameter and length are proportioned to the volume of
the boiler, A, is filled with the liquid which is contained in the
boiler, so as always to be able to rapidly produce a pressure of nine
atmospheres or more by direct heating. The flanges of the tubing are
provided with a cut-off of angle iron identical with that of the tube,
D. By means of this arrangement the cocks and the flanges, E, permit of
communication between the serpentine tubing, R, and the boiler being
interrupted; while the heat developed by the fire-place, F, causes an
active circulation in both the tubing and boiler.
[Illustration: DRESEL'S WOOD PULP APPARATUS. Fig. 1]
[Illustration: DRESEL'S WOOD PULP APPARATUS. Fig. 2]
To put the apparatus in operation the cover, D, is first unscrewed, and
there is put into the boiler a certain quantity of wood, which has been
divided up by a cutting machine of special form. Then the boiler is
filled to the proper height with the liquid necessary to dissolve the
incrusting materials, the cocks, B, being closed. Afterwards there
is fixed immediately beneath the angle-iron ring of the cover, D, a
perforated iron plate upon which the contents of the boiler rest when
the latter is turned up.
Pages:
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65