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Патент USA US2102297

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Dec. 14, 1937.
H. WALCH ET AL
1 2,102,297
PROCESS AND APPARATUS FOR SEPARATION OF THE COMPONENTS
OF A MIXTURE OF MORE THAN TWO COMPONENTS
Filed May 11, 1931
9
__
‘F/G. 2. ‘
_
F/6.3.
Patented Dec. 14, 1937
, 2,102,291
UNITED STATES
PATENT OFFICE
2,102,291
,
PROCESS AND APPARATUS FOR SEPARA
TlON OF THE COMPONENTS OF A MIX
' TURE OF MORE THAN TWO COMPONENTS
Henri Walch ‘and Jean Prélal,
Paris, France, as
signers, by memo assignments, to The De
Laval Separator Company, New York, N. Y.,
a corporation of New Jersey
Application May 11, 1931, Serial No. 536,500
In Sweden June 11’, 1930
7 Claims. (01. 2334-2»)
lightest component;
In centrifugal separators of the usual types, consists exclusively of the heavier components.
the other of the two
which as a rule are constructed for separation of 'and
lighter component, e. g., the oil, is displaced
two liquids of different speci?c gravities, the The
in the separating chamber and discharges
separated components are discharged from the inward
through level outlet 5, which may be regulable
5 bowl over level outlets whose‘ radial positions are
by well known means. The two heavier com
?xed. If , however, three or more liquids of ,dif_
ponents, e. g., the sulphuric acid and the gou-'
ferent speci?c gravities are to be continuously drons, are displaced towards the periphery of the
discharged from the bowl, the construction of a bowl under the in?uence of the centrifugal force.
corresponding number of level outlets'o?ers very
In the bowl wall 9 are outletsv 6, which may be 10
10 considerable di?iculties. In addition, the bowl
nozzles, of such a construction as to
will also be very sensitive to variations in the capillary
allow
the
escape of the sulphuric acid with but
speci?c gravities of the components of the liquids. very little or
nothing of the goudrons, which have
The object of the present invention is to pro
a higher viscosity than the sulphuric acid. The
vide means for securing effective separation and goudrons move inward through channels 1 and 15
' separate discharge of more than two components.
In- the drawing, which shows preferred embodi
ments of the invention:
'
Fig. 1 is a vertical section of a centrifugal bowl,
embodying the invention, which is adapted for
continuous separation of three liquids of different
speci?c gravities.
Figs. 2 and 3 are detail sections illustrating
di?erent modi?cations of one of the heavier liquid
discharging means.
1
The invention is mainly characterized by ele
ments in the bowl wall of such a construction that
they allow but one of the two heavier components.
of the original mixture which are‘ being displaced
towards the periphery of the bowl to stream out,
30 the lightest component 01' the mixture discharg
ing in known manner through outlets close to the
rotation center of the bowl.
The other of the
two heavier components of the original mixture
which are displaced toward the periphery of the
35 .bowl (which component may be the heaviest
component or the next heaviest component of
the original three components) discharges
through outlets arranged in known manner at a
radial zone outside the outlet for the lightest
40
component.
‘
»
.
,
The bowl illustrated in Fig. 1 is especially con
structed for separating oil from a mixture of
goudrons and sulphuric acid, which are residues
alter the re?ning, at the same ‘time that the
' goudrons and sulphuric acid are separated from
each other, and for-separately removing these
three components. 0f these'three components,
‘the oil has the lowest speci?c gravity and the
acid the highest speci?c gravity. The mixture is
50 led into the centrifugal bowl through a central
feed tube 1 and then streams through channels
2 into a separating chamber 3, preferably pro
vided with a liner of Irusto-conical discs l. In
this chamber the mixture .of liquids is at first
separated into two main bulks, one vof which
are removed from the bowl in‘ known manner
through outlet 8, whlchwmay also be regulable
in known manner.
With other mixtures it is, of course, possible
to arrange the nozzles in such a way that the 20
next heaviest component, with but very little or
nothing of the heaviest component, will escape
through the nozzles, the heaviest liquiddischarg
ing through an outlet of known type, for in
stance, a level outlet like outlet 8.
25
'
Inthe speci?c mixture given as an example,‘
all three substances to be separated'are in liquid
state. It must not be understood, however, that
the process is limited to~substances with com
paratively low viscosity. In fact, substances of
30
a consistency between that of a liquid and that
of solids are separable in a bowl embodying the
invention.
'
Figure 2 shows a special type of capillary nozzle
in the bowl wall 9. The channel I70, ‘whose axis 35
is at right angles to the rotation axis of the bowl,
has, at its inner end, the shape of a conical valve
seat II. The channel is partly occupied by a
valve body l2, the inner part of which has the
shape of a cone l3 ?tting on thevalve seat ll.»
During the rotation of the centrifugal bowl the
cones of the valve body are pressed outward-onto‘
the valve seat so that capillary coni‘cal through
?ow channels are formed between the cone and '
the seat.
_
‘
45
Figure 3 illustrates still another type of capil
lary nozzle in the bowl wall. The channel ll has,
in this constructionya boring or countersunk por
tion I5 at the inner side of the wall. Extending
into‘ the channel is the shank of a pin Ithaving, so,
at its inner end, a head ll. In the boring, sur
rounding the shank of the pin, are a number of
thin ring-shaped (preferably .metal) .discs ' ll.
When the centrifugal bowl rotates, the pin is
thrown outward by the centrifugal force and
2
'
_
2,102,297
presses together the discs I '8, so that the desired sothrottllng the discharge through which the two
capillary channels are formed between them.
constituents tend to escape as to allow
The effect of the centrifugal force acting on I heavier
the escape therethrough of only the more free
the valve bodies l2 or the pins 16 may be in
creased by means of springs, arranged in such a ?owing of the two heavier constituents and com
manner that they press the said parts» outward. pel separate out?ow of they other heavier constit
uent.
The same e?'ect may be reached by the aid of
screws forcing these.parts outward.
It will be understood that the invention is not
10
limited to‘ the separation of the particular mixture
of oil, goudrons and acid speci?ed, since it is ap
i
plicable to the separation of any mixture of more
relatively free ?owing liquid and the other a
relatively viscous material, said bowl having out-
than two components whereof the two heavier
spectively with'the central portion and periph
lets, relatively near the axis, communicating re
components are of di?'erent speci?c gravities or
15
"
5. A centrifugal bowl for continuous separation
and‘ separate discharge of a mixture oi."v three
constituents one of the two heavier of which is a
. '
eral portion of the separating'space of the bowl,
said bowl having" an outlet in. its peripheral wall
of substantially different viscosities.
Having now fully described ‘our invention, what
through which both of said heavier constituents
tend to escape, said peripheral outlet being formed
byv members presenting =opposing surfaces and
1. A centrifugal bowl for continuous separation ,
vwhich
are movable one relatively to another to
and separate discharge of the components of a_
afford between said surfaces an outlet of variable 20
1 mixture ‘of morethan two components, compris
size but which, under the in?uenceof centrifugal
ing outlet means for one of the heavier compo
we claim and desire to. protect by Uetters Patent _
'
is:
a
_
'
,,
v
force, tend to close and so closely contact as to
nents positioned relatively near the rotation axis
of the bowl and communicating directly with the
interior of the bow] at only its peripheral zone,
and outlet means for the other heavier compo
nent, the last named outlet means comprising a
hole providing a comparatively free opening
provide an outlet of capillary character through
which only the relatively free ?owing liquid can
escape, thereby compelling the discharge of the
other heavier ingredient through the outlet, rela
tively near the bowls axis, communicating with
the peripheral portion of the separating space of
,when the bowl is stationary and means adapted
the bowl.
‘to so throttle the hole during rotation of- the
bowl as to provide an outlet of capillary character.
2. A centrifugal bowl for continuous separation
and separate discharge of the components of a
mixture of more than two components, compris
ing‘ outlet means for one of the heavier compo
40
-
6. A centrifugal bowl for continuous separation 30
and separate discharge of a mixture of two con
stituents one of which is a relatively free ?owing
?uid and the other of which is a relatively viscous
material, said bowl having an outlet in its periph
nents positioned relatively near the rotation axis eralwall though which both constituents tend
of the bowl, and outlet. means for the other to escape and an outlet, relatively near its axis,
heavier component, the last named outlet means which communicates directly with only that part
'comprising a frusto-conlcal valve seat and a of the bowl adjacent its periphery, said peripheral _
outlet being ‘formed by members presenting op.
valve having a frusto-conical part substantially
conforming in shape to ‘the valve seat and which
is arranged to press outward due to centrifugal
action onto said valve seat during rotation of the
bowl to form a capillary through?ow channel be
45 tween the valve and its seat.
-
posing surfaces and which are movable one rela 140
tively to another to aii'qrd between said surfaces
an outlet of variable size but which, under the
in?uence of centrifugal force, tend to close and
I so closely contact as to provide an outlet oftcapil
lary character through which only the relatively
3. A centrifugal bowl for continuous separation» free
?owing liquid can escape, thereby compelling
the discharge of the other speci?ed constituent
and separate discharge of the components of a
mixture of more than two components, comprising
outlet means for one of the heavier components
positioned relatively near the rotation‘ axis of the
through the other outlet.
'
-
"l. The process of separating a mixture pro
duced by the treatment of oil with a mineral acid .
bowl, and ,outlet means for the other heavier
to thereby form a mixture of oil, acid sludge. and
component, the last named outlet means com; vfree
acid, the acid sludge and free acid being‘
prising a countersunk recess, a headed pin, and
ringeshaped discs sleeved on the pin ‘between its, of substantially greater speci?c gravity than
and the acid sludge being compara-~
head and the base of the recess and arrange ‘. to the oilviscous
and the free acid "being rela-.
be pressed together by centrifugal action during tivelytively
free-?owing,
which comprises subject
the rotation of the bowl to form capillary chan
ing the mixture to centrifugal force and effecting
> nels between them.
4. The process of separating a mixture of more separate discharge of the three constituents by
so throttling‘the discharge through which the
than two constituents of which one of the heavier acid
sludge and free acid tend to escape ‘as to
constituents is a relatively free ?owing liquid and
allow the
pe of only the relatively free-?owing
the-other of the heavier‘ constituents is a rela
acid and ‘
mpel separate out?ow of the acid ‘
tively viscous material, which comprises subject
sludge.
ing the mixture to centrifugal force, effecting
85 separate discharge of the three constituents by
-
, HENRI WALCH.
JEAN PRnLAz.
65
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