Honolulu star-bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1912-2010, 1915-10-27
Sugar Room Machinery. Boil
ers and Furnaces Today's
Topic at Convention

II
sugar Room Machinery and BOIL
Iers and Furnaces were the topics of
discussion at the Sugar Mill Engi.
neers' Convention this morning. C.
White, chairman of the committee Sc
llected TO work mp q report en- this sub
ject. was the principal speaker on SUI
i gar room machinery. He spoke in
part as follows:
The centrifugal Is one OF the most
important and valuable machines we
thaye in the sugar mill and is so well
known Ia detail that any discussions
thereon on the merits or dement's
of different makes, need not be dwelt
upon here. Rather should we be oc-
Icupied in getting the maximum output
of these machines, In keeping them at
their highest efficiency.
TIL, spraying of hot molasses into
the low grade massecuite when being
dried has been introduced into some
| of the mills and very decided gain
| In the time Of drying has resulted.
AT hilauea. where this method was
employed during the last crop. tank
was erected above the centrifugal
into which the waste molasses was
pumped. This was then heated by q
steam coil to about $50 degrees Fab
renheit; a pipe led from the tank into
leach machine into which It was run
/ with the massecuite to be dried. This
gave us q saving of % per cent In
the time Of drying and also enabled rs
to boil per cent heavier. thus giving
as a consequently lower. molasses and
bettery recovery. We propose fur
thersto increase the speed for drying
for theSi916 crop by the introduction
of hot water pipes through the mixer,
heating the nassecuite before it falls
into the machine.
Large Bins Essential.
Large bin capacity is an essential
feature In a sugar room, where In
the majority of mills II can serve as
storage for sugar dried by the night
shift. and with the addition, perhaps,
of an automatic weighing machine,
and most certainly q union sewing
machine, in conjunction with convey
ors to transport the bags to any part
of the room or cars.
ssAt Kilauea, one man fills and
weighs; one woman at the sewing ma.
chine sews, and one man handles all
the bags as they fall from the con-
veyor into the car. This crew can
handle Is tons per "a hours.
The members of the committee
which worked on the preparation of
this report are g. White. chairman
IT. Murray, w. Pillar, G. e Wilson.
w. T. Greig, j. C. Bruins, J. Nicoll, F.
Crawford. 8fs Ms }.eS
Boilers and Furnaces. aor 3,
The report Of the committee on
boilers ana fuTnafes s5fn IN part as
D zone engineer claims 'thst.the manu-
facture of lap-jointed boilers should
be condemned; also the ball and lever
type of safety valve; and prefers
spring loaded valves He also thinks
that an boilers should be equipped
with automatic non.retufn stop valves.
One would never think Of putting IN
q feed water line without q check
valve, so why Is a steam pipe left
without them? They would more than
pay for themselves should anything
let go, either by the bursting Of a
tube or any part of the main steam
line. Where new horizontal multi
tubular boilers are Installed IN plants
today one notes quite an Improvement
IN the construction. The heads are
being reinforced by 1s-inch plate above
the water line. and 2A-inch stay bolts
passing right through, taking the
placed of COW foot stays or other meth
DDS of brAciHg. q ~.
THE system Of admitting the feed
water into the top of the boiler and
delivering the same into series OF |
sediment arresters, has been operated |
very successfully, there being quite an
especially In water circula-
ton. This feed water system has /
been operated on the two new Cat
ton. Neiil boilers at Onomea for the
past season At first / was Of the
opinion that there might be trouble
with this system when the feed water,
was cold. but later found that there
was no difficulty.
Pron0te Fuel Economy. /
different types of furnaces have
been tried out to promote fuel econ
omy. The Ginaca.Keech furnace In
stalled at 0nomea on two new boilers
has proved to be very satisfactory. /
being very suitable for finely-divided
bagasse. Air openings of 126 square
inches are provided at the rear end
Of each boiler, and are regulated by
slide doors for q suitable amount Of
iraught The best results are OBJ
tanned when the doors are closed down
to about 80 square inches.
In plants where the old type of fur.
mace still remains / would suggest tc
eaye the CRATES and bars as they are,
1t present and put in brick arch
similar to Ginaca.Keech or Honolulu
ron Works furnace. believe thero