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Патент USA US2127953

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23, 1.938.
Filed July 25, 1936
Patented Aug. '23, 1938 I
" » 12,121,953
iIUNITED- srA'i'Es PATENT- orrics . '
raocsss or
Whittenburg, Ten, assignm
Company, a corporation
Application July :5. 1m, smnmfaacu
4 Claims. (01. 196-52)
clay containing tower 22 through conduit It and
' This invention relates to the art of treating hy
drocarbo'ns for the purpose of producing there-' pass through a condenser 25 and then ?ow
.i'rom an improved type of motor fuel. In its through conduit 26‘ to a tank 21 from which they
are withdrawn through pipe 18, controlled by
more speci?c aspects, the present invention‘re
I lates to the treatment of hydrocarbons of the valve 29, to storage. >
It the product being charged to the vaporizing
gasoline type to convert the same into gasoline
_ like products having high‘ anti-knock qualities. coil i2 is in the boiling range desired, fractionat
The object of_ this invention, therefore, is to ing tower l8 vmay be by-passed and the vapors
treat hydrocarbons of the gasoline type to improve passed directly from the catalyst tower II to the
clay tower 22 at the desired temperature. Where 10
their qualities.
A still further object of this invention is to in it is desired to by-pass the vapors around the
treat hydrocarbons of the gasoline type by con‘ fractionating tower it, the valve 30 in the line
tacting the same withlcaliche of the limestone 32 is opened, and valve SI of line I‘! and valve
~typeand thereby improve the anti-knock quali
ties of the same.
,K ,
Brie?y, by this invention it is proposed to pro
33 of line 2i is closed.
Condensates accumulating in the towers I! and 15
22 may be. withdrawn from [the bottoms'thereoi
duce gasoline like productsof highquality by
through the pipes 34 and 35 respectively, which
passing hydrocarbon oils in vapor phase, while
are controlled by the .valves 36 and 31.
maintained in a highly heated-or superheated 7
form, into contact with‘ caliche which is main
tained by the heat of the vapors or otherwise at
a temperature above the normal vapor tempera
ture at the existing pressure otthe hydrocarbons
under treatment._
The following descrlption,"which is a preferred
type of operation, is offered merely for purpose
of disclosing the different stages to include the
various temperatures and conditions which exist
and is not to be considered as limitations there
to, as the method is capable of many‘ variations
which are included within the general scope of the
Fig. 1 illustrates diagrammatically one-type of
apparatus for effecting the present invention.
The hydrocarbon oil to be treated is introduced
through pipe ill by means of a pump I i and forced
into a heating coil l2 contained in the furnace II
which may be heated by any suitable means. In
coil l2 the oil is vaporized and heated to any de
sirable temperature, and the heated vapors pass
from coil i2 to a continuation thereof 82A where
of caliche screened to pass a 5 ‘mesh and retained
on a 30 mesh screen.
The tower was main
tained at about 700° F. and a pressure of approxi
mately 15 to 20 pounds per square inch. The rate ‘ 30
of passing the gasoline vapors through the caliche _
was equivalent to 3 to 5 barrels of distillate per
hour per ton of catalyst. Testson the charge
and make are as follows:
Gravity. A. P. I .............................. __
Initial boiling point _________________________ ._
in the vaporized . oil is superheated and from
whence it passes through the pipe It into a cata
lytic' treatment tower iii in which there is con
tained a body of caliche, designated by the ref
erence numeral it. The vapors entering the
tower it pass through the body it of caliche
which is maintained by the heat oi the vapors,'or '
by any other suitable means, at a desired tem
perature. The treated vapors leave the tower it
' near the bottom thereof and ?ow through a pipe
ll controlled by valve 3!, into a fractionating
tower it where the product is cut to the desired
end point,-whether it be'gasoline or tractor fuel, '
and which may be withdrawn through pipe l9
controlled by valve 20.
The vapors pass overhead from the fractionat-r
ing tower l8 through the conduit 2i and into a
second tower 22 containing a body 23 of clay
through which the vapors pass. ~Vapors leave the
The invention contemplates fractionating‘ or
refractionation of the hydrocarbon oils treated 20
by the process when required. Example is given
below to'clarify the process but is not to be in
terpreted as limitations to the invention.
Example-Cracked gasoline was vaporized and
the vapors heated to 700° F. and passed through a
tower containing calcium carbonate in the form
'i‘. E. L; to 70 Octane No.. cc. per gallon_._-____.
Percent reduction T. E. L. (tetraethyl lead) ____ ._
‘In practicing this invention the temperature 55
may range from 500° to 1,500° F‘. and the pressure
may vary from ‘atmospheric toI5,000 pounds. But
when treating lighter hydrocarbons, such as
butane and methane, in accordance with this in
vention the pressure may vary from atmospheric 60
to 5,000 pounds and the temperature from 800° to
1,500° F.
In the practice of this invention it is to be
understood that nothing herein stated relative to
5 the description thereof is intended to restrict the
type of hydrocarbon of the motor fuel or gasoline
range or type that may be treated in accordance
with the teachings of this present invention, and
accordingly hydrocarbons of the gasoline type or
10 within the gasoline or motor fuel range, derived
hydrocarbons while in the vapor phase and at a
temperature within the range of 500° to 1,200° E.
in contact witha body of caliche of the limestone
type at a ?ow rate so regulated that the boiling
range of the treated product is not materially '
3. The method of improving the quality -of
hydrocarbon motor fuels boiling within the gaso
line range which comprises contacting said hy
from distillation,‘ cracking, polymerization, or by
drocarbons in the vapor phase at a temperature 10
within the range 500° to 1,200° F. with a body of
any other manner and from any source, may be
caliche of the limestone type at a flow rate so
treated by the method herein described.
regulated that only'a minimum of cracking occurs
thereby producing a motor fuel of improved
I claim:
1. The method of increasing the anti-knock
qualities of hydrocarbons boiling within the gaso
line‘ range which comprises passing said hydro
carbons while in the vapor phase and at a tem
perature within the range 500° to 1,500° E, over
20 a body of caliche of the limestone type at a ?ow
rate sui?cient that only a minimum of cracking
2. The method of increasing the anti-knock
‘qualities of hydrocarbon motor fuels boiling with
25 in the gasoline range which comprises passing said
4. The method of increasing the quality of
motor fuels boiling within the gasoline range
which comprises vaporizing said fuels, heating the
vapors to a temperature within the range 500° to
1,200° F., contacting the vapors while at said tem-. 20
perature with a body of caliche of the limestone
type at a How rate sufficient that the boiling range
of the product is not materially di?erent from
that of the charge.
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