The Morning Tulsa daily world. [volume] (Tulsa, Okla.) 1919-1927, 1922-04-29
In THE OIL FIELDS
office eaai Residence 2AAs W. PECK r. o. DO, sss.

These were given wide publicity
by advertising and by direct mailing
to refiners and other purchasers.
Considerable commendation was
given the association by purchasers
for undertaking this step and carry
Ing II to q successful conclusion.
with the establishing OF these
specifications. the association placed
before the trade generally, the very
important specifications OF recovery
as a measure of volatility. with
the exception OF two grades OF ma
tural gacoline 1t is included as n
specification OF every grade. This
test is made by making the standard
distillation test as prescribed by the
American Society OF Testing Mater
ials with the additional provision
that the condenser bath should be
maintained at 80 TO "a deg. +. The
recovery was specified as the i'm
portant measure of volatility. for
there Is less variation due 10 differ
ences of apparatus or the personal
equation of the tester, than Is the
case in determining vapor tension
or initial boiling point. The vapor
tension test is difficult to check
even with the same apparatus and
where the product undergoes a con-
siderable change in temperature be-
tween tests. IL Ia not an accurate
measure of volatility because Of the
fact that a relatively small charge
In vapor tension measures con-
siderable change In volatility. For
this reason the experimental errors
normally encountered in vapor ten
sion. tests may give very misleading
results as to volatility.
The determination of initial boil
ing point OF natural gasoline is suf-
ficiently affected by variations in
temperature of sample, room tempa-
ture and the manipulation OF the
test as to be unsafe az a single test
for volatility, although 1t is OF value
when taken in conjunction with the
distillatlon recovery. Grades "A"
"B" and &c" cover the lower gravity
range Of natural gasoline, and with
the high recoveries specified form
ideal products for blending directly
by the jobber. The high recovery
or more properly the relatively
lower volatility makes it somewhat
simpler to handle particularly where
small quantities are used and no
special equipment is provided. These
grades usually command a slightly
higher price than I'D" and Cd
which in many ways are much more
suitable for the refiner than those
first mentioned. The refiner in ad
dltion to imparting the valuable
characteristics of low initial and
consequent increased volatility to
his motor gasoline. is usually de-
sirous of adding a sufficient amount
of natural gasoline to produce a
predetermined gravity for his fin
ished product. The addition OF a
smaller quantity of higher gravity
natural gasoline will accomplish the
same result at a saving to the re-
finer, and within certain limits the
higher gravity is more desirable.
These limits are determined by the
distillation recovery of the product
and by the equipment of the pur-
chaser. Refiners with better equip
ment for handling natural gasoline
| or who are using 1t in small per-
centages in their finished products
| may find grade "F'' still more eco
nomical to use, due to the higher
gravity and the slightly lower price.
Grade &c" was listed to cover a
we'll weathered raw of S5 per cent
| recovery whose gravity is higher
| than those specified in "B" or &C"
This is really an excellent product
combining low volatility and high
gravity.
Although this division of natural
| gasoline into seven grades seemed
desirable at the time these specifi-
cations were published. now that
manufacturers have become accus-
toned to this grading of their pro-
ducts, a reduction might advantage
ously be made in the numbers OF
grades. For example. grades b, c.
and G. are practically identical, with
the exception of gravity. each hav-
ing the important recovery speci-
fication fixed at SIS per cent. These
might be combined into a single
grade, specifying end point, color
and IS per cent recovery, leaving
the gravity limits to be fixed by
agreement between the purchaser
and manufacturer. The ultimate
elimination of vapor tension as a
specification for volatility and the
use OF recovery alone will probably
be found desirable. 1t Is possible
that at some future date the bureau
OF explosives will substitute distil-
laton recovery for the present va
por tension test.
Although some change might be
made in the division of motor gas
| oliIe IHlO lOuf BIdueS, as now spec
flied. the desirability of such
changes is not as evident as those
mentioned in connection with natu-
raj gasoline. There has been some
discussion as to the desirability of
specification covering q motor
gasoline of 437 end point which
would be equally satisfactory 10
purchasers without including some
OF the present onerous specifica
tions by a strict compliance with
the new navy specifications.
In conclusion we wish TO recon-
mend consideration of the sugges-
tions made herein and trust that the
discussion may bring out other desl-
rable proposals for improving OF
Simplifying the present specifications
The committee also wish to ex.
press their appreciation of the able
efforts OF our chairman, Mr.. II, T.
Ashton, who we regret has resigned
from the association and its actiyi.
ties due to a change in his business
affiliations
The session in the forenoon was
presided over by A. j. Schlosser
manager OF the gasoline division OF
the Barnsdall corporation.
The afternoon session CONVENED al
1880, with b. II. Bush, vice president
OF the Diamond Refining comlUny
OF Kansas City, presiding. There
were in the neighborhood of 100 del.
egates present, many having been
prevented from reaching Tulsa by
the Texas floods.