CT MFHqyZz/zdz

April 3, 1930.
c. w. P. HEYLANDT
1,753,785
PROCESS OF TRANSFERRING LIQUEFIED GASES FROM ONE CONTAINER TO ANOTHER_
Filed March 8, 1929
- INVENTOR;
CT MFHqyZz/zdz;
A TTORNEYS.
Patented ‘Apr. ‘8, 1930
1,753,785
HEISSUED
‘ UNITED STATES PATENT OFFICE
CHRISTIAN WILI-IELM PAUL HEYLANDT, OF BERLIN-LANKWITZ, GERMANY
PROCESS OF TRANSFERRING- LIQUEFIED GASES FROM ONE CONTAINER TO ANOTHER
Application ?led March 8, 1929, SerialpNo. 345,259, and in Germany March 2, 1928.
In transferring lique?ed gases of low-boil again assumes the temperature of the boiling
particularly when large quantities of such In order to carry out the process, it is ad
gaseswere involved, it has been the practice visable to transfer a small quantity of the
ing. point from one vessel to another, and point.
5 heretofore to permit pressure to develop au liquid gas into an evaporator coil, the evap
tomatically from the natural evaporation of oration products of which, with increased
- the gas in a closed vessel, in order to effect ' pressure, are led to the vapor or steam cham
apsu?iciently quick transfer of the lique?ed ber of the receptacle which contains the liq
gas. ‘Under that method, however, consid uid to be emptied.
‘
erable losses by evaporation occurred dur . The drawing accompanying this speci?
ing the transfer of the gas into the second cation illustrates diagrammatically an ap
container. I have found thatysuch losses can paratus suitable for carrying out the present
be reducedto one fourth if the gas is continu
15
ously maintained during storing and trans
55
60
process.
In said drawing, 1 designates the inner
portation at practically ordinary boiling container
of a li uid tank having a ?lling
temperature, and at the time of making the pipe 3,'said tank eing mounted on a truck
20
transfer, an arti?cial pressure gas is intro for elransportat-ion. At 2 this pipe 3 is tapped
duced into the ?rst container for a de?nite so t at, as required, a small quantity of the length, of time. This can be effected from liquid contents can be drawn off into a coil
an outside source, for instance by the use of '4, where it will evaporate. ‘The coil dis— 70
compressed gas, or by the rapid evaporation charges into the space above the liquid level,
an'otherliquid gas, and conducting the pres oping from the drawn~o?" quantity of liquid
sur'e'vapors- to the liquid. The liquid will is su?icient for the expulsion of the deslred
then run out of the containers to be emptied liquid to be transferred. The transfer neck
at increased speed, without any substantial of the tank communicates in the well known
of a part of the gas to be transferred or of in the container 1., and the pressure gas devel
25
evaporation losses taking place.
75
manner by means of a ?exible tube with the
Tests have shown that especiall “during transfer vessel 5, which receives the liquid
the transfer of pressureless liquefivd gases to
be brought to pressure-gasi?cation b way
30 into pressure-developing containers, the
of self-compression. The tapping tu e, of 80'
losses which heretofore have amounted to course, is provided with a suitable valve for
from 2 to 4 per cent can be reduced by the controlling the ?ow of lique?ed gas to the
present method to 0.5 to 1 per cent.
coil 4.
However,.also
in
other
respects
does
the
Having thus described and ascertained the
-35 present method offer‘ advantages, inasmuch
nature of my said invention, what I claim 85
as the transportation containers for lique?ed is
gases now in use, the discharge openings of '1. The process of transferring lique?ed '
which containers‘, for practical reasons, are gases from one container to another, which
usually higher than the lowest liquid level, consists in maintaining the lique?ed gases
can be maintained in use, without pressure, at their ordinary boiling temperatures in the 90
and then, during the periods of rest, the pres ?rst container, and utilizing a portion of the
sure difference for the gas stored within the lique?ed gases from the ?rst container to ap
45
’ container is increased so that, during rest pe+~ ply‘ an arti?cially- increased momentary pres
riods, no gas is lost from such transportation sure to the lique?ed gasesv thereby to cause
containers, while, when operating the vehicle, the ‘same to ?ow at increased speed into an
95
the increased gas pressure is vimmediately other container. ‘
2.
The
process
of
transferrin
lique?ed
again reduced by utilizing the same in the
motor so that the liquid to be transferred in gases from one container to anot er, which
50
consists in maintaining the- gases at their or~
accordance with the above-mentioned method vdinary boiling temperatures in the ?rst con
100
2
1,753,785
tainer, extracting a small quantity of said
lique?ed gases from said container and evap
orating the same, and returning the vapors
to said ?rst container thereby to exert pres
5 sure on the lique?ed gases and cause the same
to ?ow at increased speed into another con;
tainer.
3. An apparatus for transferring lique?ed
gases from one container to another, compris
10 ing a vessel having a ?ller tube, a coil dis
posed outside of said vessel and adapted to
communicate at one end with said tube, the
opposite end of said coil being in communi
cation with said vessel above the liquid
15 level, thereby to produce an excess pressure
for discharging the liquid from said vessel.
4. An apparatus for transferring lique?ed
gases from one container to another, compris
ing a vessel having a filler tube, a coil dis
;0 posed outside of said vessel and adapted to
communicate at one end with said tube, the
opposite end of said coil being in communi
cation with said vessel above the liquid level,
thereby to produce an excess pressure for dis
25 charging the liquid from said vessel, and de
tachable means for placing said vessel in
communication with a second vessel.
In testimony whereof I have signed my
name to this speci?cation.
30
CHRISTIAN WILHELM PAUL HEYLANDT.
35
40
50
60
65

Download Report