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Патент USA US2135068

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Nov. 1, 1938.
w, E, cURRlE -
2,135,068
PRODUCTION OF BLENDED ANTIKNOCK MOTOR FUELS CONTAINING POLYMERIZED GASOLINE
Filed Jan'. 31, 1936
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Patented Nov. 1938
UNITED "STATES2,135,068PATENT OFFICE
-
i’RODUCTION OF BLENDED ANTIKNOCK
MOTOR FUELS CONTAINING POLYMER.‘
QASOLINEYV '
‘William. E. Currie, Flushing, N. Y., assignor .to." Y
iStand'ard-I. G. Company, a corporationof
“Delaware
Application January31, 1936, Serial No. 61.72l
'2 Claims.
(01.196-10)
invention relates to-..,the production of
blended motor fuels having high antiknock value
and containing both polymerized and hydro
genated gasoline with or without cracked gasoline
5
or absorption gasoline. A particular object of
the invention is to supplement the antiknock
value of hydrogenated gasoline by blending with
it polymerized gasoline (with or without hydro
genation), so that the. hydrogenation process
10 may be runat lower temperature than would
otherwise be required.
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,
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'
'
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I
in through line 20 and the polymer through
line 2!.
‘
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'
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If it is desired to remove hydrogen as an inter
mediate step in the polymerization stage, this
hydrogenmay be withdrawn through line 26 and
used to supplement the hydrogen produced in the
unit 6. If it is desired to blend the absorption‘
gasoline with the other products produced in the ‘
system, it may be withdrawn through line 21. and
run into blending line H or withdrawn through
line 22.
A further object is to utilize the methane of
the gas from which the ole?ns have been re
Referring to Fig. 2, a combined absorption and
polymerization unit 23 is provided in which the
moved in the polymerization step, as the source
‘ole?ns are absorbed in the presence of the ab
sorption oil under the in?uence of boron ?uoride
or other suitable catalyst. The absorption gaso
of the hydrogen for the hydrogenation operation
and to forward residual gases to a cracking stage
for production of further quantities of ole?ns and
methane. Further objects and advantages of
line and the'polymerization gasoline are removed
together from the ‘absorption oil. In Fig. 2, line
the invention will appear from the following de- ‘ 24 is indicated for introducing the olefin contain
20 scription read in connection with the accompany
ing gas and line 25 for a withdrawal of the ab 20
ring drawing, in which
. sorption and polymerization gasoline. Otherwise
Fig. 1 is a diagrammatic sketch showing the the equipment illustrated in Fig. 1 may be used
arrangement of equipment; and
in whole or in part in connection with the com
Fig. 2 is a sketch showing an alternative form bined absorption and polymerization.
25 of the absorption and polymerization units.
In-the foregoing description no attempt has 25'
Referring .?rst to Fig. 1, cracked gas from a been made to give the details of the various units
re?nery is passed through a line I into an absorp
tion unit 2 or other suitable means for separat
ing methane from ole?ns. The cracked gas may
30 be supplemented or replaced by natural gas in
since they may be of any approved kind.
I claim:
\
1. A method» of producing high anti-knock mo
tor fuel ‘from saturated normally gaseous hydro 30
troduced through line 3 and cracked in cracking
carbons which ‘comprises subjecting said sat
unit 4 to produce an ole?n containing gas.
From the absorption unit the methane is
passed through a line 5 into a hydrogen produc
35 tion unit 6. Ole?ns from the absorption unit
?ow through aiine 'Hnto a polymerization unit
urated normally gaseous hydrocarbons to crack
8 from which the polymerized gasoline is‘ with
drawn through a line 9 and then separated via
line II] or run into the blending line I I.
40
In the hydrogen production unit 6 the methane
is converted by reaction with steam into hydro
gen which is passed through line l2 into the hy
drogenation unit or units l3. The hydrogenated
gasoline is run out through line H and withdrawn
45 through line I5 or passed into the blending
line H.
The gas from the hydrogenation step ?ows
through line I6 into the hydrogen removal plant
I‘! and the hydrogen is recycled through line l8.
5O
Residual gas flows through line I9 into cracking
unit 4.
.
In the hydrogenation unit or units oil may be
converted or a polymer from the polymerization
55 unit 8 may be hydrogenated. The oil may be run
ingconditions for a time adequate to convert a
substantial portion of said saturated hydrocar
bons into ole?ns, thereafter separating the ‘ole
?ns so formed from unreacted saturated hydro
35
carbons, producing hydrogen from said unre
acted saturated hydrocarbons, subjecting the '01s
fins so separated from said unreacted saturated _
hydrocarbons to. polymerization conditions for a 40
time su?icient to convert the normally gaseous
ole?ns into higher-boiling normally liquid poly
mer hydrocarbons, passing a mixture of said
polymer hydrocarbons and hydrogen obtained
from said ‘unreacted saturated hydrocarbons 45
through a hydrogenating zone maintained under
hydrogenating conditions for a time su?icient to
effect a substantial hydrogenation of said poly
mer hydrocarbons, thereafter fractionating the
hydrogenated product to separate a fraction 50
within the motor fuel boiling range and 2. nor
mally gaseous fraction, removing unreacted hy
drogen from said normally gaseous fraction and
passing the remainder of said normally gaseous
fraction to said ?rst-named cracking treatment. 55
2
2,185,068
2. A method of producing high anti-knock
stable gasoline motor fuel from saturated nor
mally gaseous hydrocarbons containing methane,
which comprises subjecting said normally gas
eous hydrocarbons to cracking temperature for a
period sufficient to convert a substantial portion
of said saturated constituents into ole?ns, there
after separating ole?ns so formed from methane
and other unconverted saturated hydrocarbons,
subjecting the methane and saturated hydrocar
bons so separated to the action of steam to form
hydrogen,-subjecting the ole?ns so separated to
polymerizing conditions for a time adequate to
form a substantial quantity or the high-boiling
liquid polymers, combining the polymers so
formed with hydrogen produced from said meth
ane and saturated hydrocarbons, passing the 5
mixture to a hydrogenating unit maintained
under hydrogenating- conditions of temperature
and pressure to e?ect substantial hydrogenation
of said polymers and fractionating the hydro
genated product to separate a motor fuel fraction 10
therefrom.
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WILLIAM E. CURRIE.
,
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