close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3078694

код для вставки
Fel» 26, A1963
J. VAN DER STER Erm.
3,078,684
Y HEAT CONTROL FOR GAS-FRACTIONATING COLUMN
Filed April 22, 1959
Fig.2
i`l ,
24
/
,
8___
i2.
WATER
f souRcE
Fig. 3
INVENTORS
.JOHANNES VAN DER STER
JACOB w. L. KOHLER
FÍg.
BY
n
AG NT
3,078,684
3
of the element with the heat conductive member and the
At the level c--»c, the temperature at 2S is further re
liquid level inside the boiler.
duced to say, 90° K. The supply of the pump 16 further
4. A gas fractionating apparatus co-acting with a ther
mal sink comprising an insulated column having a boiler
decreases and the level no longer rises in the boiler.
The varying thermal resistance of the control member
26 should be properly chosen.
It has been found that a substantially conical pin yields
excellent results.
Alternatively, other forms are possible. Thus, for ex
ample, FIG. 3 shows a block 35 of conductive material
having secured to it a number of strips 33 having dif~
ferent lengths. The thermal resistance of this block forms
a level a-a to the area 34, where the block 35 passes
through the wall of the boiler, is also variable at diiîerent
levels.
What is claimed is:
1. A gas fractionating apparatus co-acting with a ther
mal sink comprising an insulated column having a boiler
in the bottom thereof, said thermal sink being adapted to
carry od vaporfrom said column and condense the same,
a distributor for condensate returning to said column,
conduit means in the insulated portion of said column con
necting said thermal sink to the upper part of said column,
said conduit means communicating with said distributor
for the condensate returning to said column and a vapor
lift pump in the insulated portion of said column opera
tively connected to said distributor, a heat conductive
member in said column having an external source of ap
plied heat and being in heat conducting relationship with
said vapor lift pump, said returning condensate being
conducted to the lower end of said vapor lift pump where
by said condensate is caused to rise therein due to said
4
and proportioned that the thermal resistance of the ele
ment varies at different distances between the junction
fractionating air, is 86° K. for oxygen). In this case less
heat is supplied to pump 16.
in the bottom thereof, said thermal sink being adapted to
carry oit vapor from said column and condense the same,
a distributor for condensate returning to the column,
conduit means in the insulated portion of said column
connecting said thermal sink to the upper part of said
column, said conduit means communicating with said
distributor for the condensate returning to said column
and a vapor lift pump in the insulated portion of said
15 column operatively connected to said distributor, a heat
conductive member in said column having an external
source of applied heat and being in heat conducting relationship with said vapor lift pump, said returning con
densate being conducted to the lower end of said vapor
20 lift pump whereby said condensate is caused to rise there»
in due to said source of applied heat until it spills into
said column, a portion of said heat conductive member
being adapted to assume a temperature higher than that
of said condensate, a control element in said boiler shaped
as a conical pin for controlling the contact of said member
with the liquid in said boiler, an enclosure for said control
element having apertures therein, said control element
being in heat exchanging contact with the liquid in said
boiler, and said conical control element being so shaped
30 and proportioned that the thermal resistance of the ele«
ment varies at different distances between the junction of
the element with the heat conductive member and the
liquid level inside said boiler, said conical pin having a
source of applied heat until it spills into said column, a
portion of said heat conductive member being adapted to
assume a temperature higher than that of said conden
sate, a control element in said boiler for automatically
controlling the level of liquid in the boiler being reduced
tapering point projecting in the direction of the liquid in
the boiler, and a thermally insulated lead-through mem~
ber having said conical pin passing therethrough and
secured to said heat conductive member.
5. A gas fractionating apparatus co-acting with a ther
mal sink comprising an insulated column having a boiler
in cross-section at the end closest to the bottom of said
in the bottom thereof, said thermal sink being adapted
boiler, said heat conductive member being operatively
to carry off vapor from said column and condense the
connected to said element, said control element being in
same, a distributor for condensate returning to the co1
heat exchanging contact with the liquid in said boiler, and
umn, conduit means in the insulated portion of said col~
said reduced end of the control element being so shaped
umn connecting said thermal sink to the upper part 0f
and proportioned that the thermal resistance of the ele
said column, said conduit means communicating with
ment varies at different distances between the junction 45 said distributor for the condensate returning to said col
of the element with the heat conductive member and the
umn and a vapor lift pump in the insulated portion 0f
liquid level inside said boiler.
said column operatively connected to said distributor, a
2. A gas fractionating apparatus as claimed in claim l
heat conductive member in said column having an ex
wherein the thermal resistance of said control element source of applied heat and being in heat conduct
54-0 ternal
is such as to prevent oscillation during control.
ing relationship with said vapor lift pump, said returning
3. A gas fractionating apparatus co-acting with a ther
condensate being conducted to the lower end of said
mal sink comprising an insulated column having a boiler
vapor lift pump whereby said condensate is caused to
in the bottom thereof, said thermal sink being adapted to
rise therein due to said source of applied heat until it
carry ofi vapor from said column and condense the same, ` ‘
a distributor for condensate returning to said column, con» 55 spills into said column, a portion of said heat conductive
member being adapted to assume a temperature higher
duit means in the insulated portion of said column con
than that of said condensate, a control element in said
necting said thermal sink to the upper part of said column,
apparatus for controlling the contact of said member
said conduit means communicating with said distributor
with
the liquid in said boiler, an enclosure for said con
for the condensate returning to said column and a vapor ‘ ‘
lift pump in the insulated portion of said column opera 60 trol element having at least one opening for the pas~
sage of liquid therethrough, said enclosure being located
tively connected to said distributor, a heat conductive
in
said boiler, said control element having a reduced
member in said column having an external source of ap
cross-section at the end thereof closest to the bottom
plied heat and being in heat conducting relationship with
of the boiler being in heat exchanging contact with the
liquid in said boiler, and the reduced end of said con~
conducted to the lower end of said vapor lift pump where
trol element being so shaped and proportioned that the
by said condensate is caused to rise therein due to said
thermal resistance of the element varies at different dis~
source of applied heat until it spills into said column, a
tances between the junction of the element with the heat
portion of said heat conductive member being adapted
conductive member and the liquid level inside said boiler.
to assume a temperature higher than that of said con
6. A gas fractionating apparatus co-acting with a ther
densate, a control element in said boiler shaped as a 70
mal sink comprising an insulated column having a boiler
conical pin for controlling the contact of said member
in the bottom thereof, said thermal sink being adapted
with the liquid in said boiler, an enclosure for said con
to carry olf vapor from said column and condense the
trol element having apertures therein, said control element
same, a distributor for condensate returning to the col»
being in heat exchanging contact with the liquid in said
boiler, and said conical control element being so shaped 75 umn, conduit means in the insulated portion of said col
said vapor lift pump, said returning condensate being
l
3,078,684
umn connecting said thermal sink to the upper part of
said column, said conduit means communicating with
said distributor for the condensate returning to said col
6
said control element being in hea-t exchanging contact
with the liquid in said boiler, and said heating conduct
ing strips of said control element being so shaped and
proportioned that the thermal resistance o-f the element
umn and a vapor lift pump in the insulated portion of
ysaid column operatively connected to said distributor, a 5 varies at different distances between the junction of the
heat conductive member in said column having an ex
element with the heat conductive member and the liquid
ternal source of applied heat and being in heat conduct
ing relationship with said vapor lift pump, said returning
condensate being conducted to the lower end of said
vapor lift pump whereby said condensate is caused to 10
rise therein due to said source of applied heat until it
spills into said column, a portion of said heat conductive
member being adapted to assume a temperature higher
`than that of said condensate, a control element in said
apparatus being a block of conductive material having 15
heat conducting strips of various lengths extending in
the direction of the liquid in the liquid boiler, an en
closure for said control element having apertures therein,
level inside said boiler.
References Cited in the tile of this patent
UNITED STATES PATENTS
820,429
1,716,838
2,230,137
2,799,141
2,889,686
2,919,556
May ________________ _- May 15, 1906
Shotter ______________ __ June 11,
Ewertz ______________ _.- Jan. 28,
`Tonkers et al. _________ .__ July 16,
Kohler _______________ __ June 9,
Mulder _______________ __ Jan. 5,
1929
1941
1957
1959
1960
Документ
Категория
Без категории
Просмотров
0
Размер файла
461 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа