Reflux End Point Analyzer Model 1353A. Document

INDUSTRfAL
1341
SEVENTH
STREET,
and
SCIENTIFIC
CALIFORNIA
BERKELEY.
94710
REFLUX END POINT ANALYZER
Texaco Develo@mt
Model
Corp. Design
1353A
GENERAL
The REFLUX END POINT ANALYZER
continuous
analysis
thedetermination
stituents
those
test, better
The test results
to the observed
of products,
vapor
when
pressure
can be used to indicate
concentration
of butane
or pentones
in propane-butane
type
gases.
liquified
The value
in propane
(2) correlate
results obtained
with
A continuous
ful information
izers. deproponizers,
use of the analyzer
etc. in order to determine
preparation
is extremely
+EO’F., all free and dissolved
corporating
approximately
terline
two dryers
valuable
a continuous
a number
gases
butane
from
record,
ASTM Dl837for laboratory
provides
more use-
of spot checks and is
in showing
is extremely
containing
whether
important
the temperature
or not heavy
since in working
must be removed.
trends.
Additionally.
useful in closed loop control
depropanizer,
etc.
Linde 3A mol-sieve
pellets
15) at ~1rate of approximately
8 ml./min.
to an explosion-proof
within
Controller
this box
(see separate
INSTRUMENTS
is extremely
brochure
important,
for details
FOR
with
all moisture.
by CI metering
box containing
it is controlled
of this controller]
CONTlNUOUj
by
from debutan-
over.
in the range
is equipped
is then pumped
coming
carried
with temperatures
to remove
sample
of products
ends are being
This analyzer
The dried
As the temperature
ANALYTICAL
water
is in measuring
37.5 to 60 ml./min.
Temperature
of
OF OPERATION
The most prominent
Sample
properly
type liquified
record always
than
of a debutanizer,
GE5CRlPTlON
known
the approximate
61T test and, (3) reduce the requirement
the analyzer
with
of the REFLUX END POINT ANALYZER
to (1) provide
particularly
con-
and gravities
mixtures
lies in its ability
tests.
boiling
The test results can be correlated
Test.
a
stream for
of higher
an ASTM #D1837-61T
as Weathering
related
hydrocarbon
of the amount
present.
from
of a liquid
provides
of
a sampling
Sample
pump
flow
Hallikainen
at temperature
to
in-
to dryers
is
(Hills-McCanna
the analyzing
a
-100”
system
components.
THERMOTROL
slightly
PROCESSES
Mas-
above
the
I
m.aximum
ambient
to be expected,
The THERMOTROL
control
within
actuates
II’
O.D.
from the upper
tube again
The analysis
arrester
orated
This outlet
product
the constant
box
of the sample.
to achieve
cooling
action
temperature
of the evap6ra-
the sample
above
is vaporized
in two
the other to permit
tube is approximately
to the second
tube
U-tubes filled
similar
liquid
to flow
by gravity
in the center of the tube with
neclr its center
with
outlet
the U bend
of this
CI distillation
test
in that
The temperature
temperature
at the bottom
Presence
is primarily
and will
of hydrocarbon
are dissipated
of liquid
correlate
of the second
composed
the heat in the cabinet
These vapors
column
compounds
is indicated
remaining,
with
which
the results
at the entrance
less volatile
by an increase
causes the light
than
ends to
to the atmosphere
drips
of ASTM
through
from the bottom
Dl837-6lT
test.
to the U-bend
measures
those of which
the liquified
in the temperature
at the 95%
the
evap-
point.
The analyzer
components.
couple
consists
of two
and the right-hand
To reduce
sample
box
contains
to be analyzed
and returns
posses
lag
through
to the process
the inside
The throttling
tube and into one of the three-way
path through
process
of
that
A piston type
is partially
this flow
self-regeneration
It is essential
ume.
the dryers;
of the
the sample
metering
pump
frame
heaters,
Controller.
configuration
hollow
tit some
side of the filter.
a circular
valve
steel
tubes,
Temperature
a sweepstream
stream
on a vertical.
the evaporator
with
blower
associated
and thermo-
The analyzer
is suitable
for
areas.
walls
of the filter
mounted
the THERMOTROL
1 hazardous
transportation
tling
boxes
box on the left contains
D, Division
the sample
valve
explosion-proof
The explosion-proof
use in Class 1, Group
the
temperature
its outlet.
is the reflux
of the residue.
gas
box,
the open top of the columns.
inserted
the end point
in the analyzer
against
is elevdted
connects
at the top of the cabinet.
U-tube,
A thermocouple
petroleum
U-tube
can be considered
a flame
of the second
temperature
One
containing
and exit through
located
of the heaters
The inlet to the upper
at the bottom.
vaporize
and a blower
explosion-proof
beads.
at the bottom
is also above
them.
into the lower.
in the U-bend
heaters
moisture-free,
glass
incidentally,
the action
surrounding
In the air-tight,
l/16”
six strip
F., by bucking
tion tubes and vapor
with
which
alundum
point
where
is used.
tube
A high
in the filter,
the pressure
velocity
then through
is less than
that
closed in order to force CI part of the sweepstream
solenoid
is reversed
mol-sieve
by
a timer
pellets
flow
to the evaporator
driven
at a constant
valves
that
supply
stream
the dr@rs.
a throt-
at the inlet
through
The sample
at the end of each minute
of
the
takes
in order to aid in
in the dryers.
be kept constant
and of CI predetermined
speed by an explosion-proof
motor
exact vol-
delivers
a constant
volume.
A differential
pressure controller
is used to maintain
pressure. W,ith this arrangement
the only ‘unction the pump
essentially
zero
pressure
A rotormeter
Upon
cooling
is provided
introduction
the remaining
countercurrent
flow
drop
of
main
body
the
liquid
of a normally
the pump,
for a visual
normally
the flow
generated
a stripping
gaseous
liquid
rate is unaffected
check of the sample
gaseous
by auto-refrigeration.
with vapor
tact in the first zone effects
across
the pump outlet pressure equal to the pump inlet
serves is to meter the sample and, by monitoring
an
liquid
action
so that any
are removed.
flowing
heating
vaporizing
down
over
of the descending
components
This stripping
line pressure
changes.
to the evaporators.
into the first
Liquid
by ambient
flowing
by upstream
having
prevents
tube,
the
a portion
packing
liquid.
evaporates,
is contacted
This countercurrent
a lower
variatibn
boiling
in
con-
point
than
the
in quantity
of
low
1
boiling constituents which moly be in the liquid
mixture from affecting the evaporation
in the
following
zone. The stripped remaining
liquid
from the first zone is introduced
into a similar
vaporizing
zone through
CI tee ioining
the
U-bend of the first tube with the midpoint
of
the second tube. The top of the tee provides
an overflow and air vent. Further vaporization
is effected in the second column in a similar
manner.
Vapor escapes from the top of the
tube and the liquid residue settles to the bottom where it drips at the rate of about 4 to 6
drops per minute.
This residue is at its boiling point temperature
at atmospheric
pressure
and the value of this boiling
point temperature corresponds
to the proportion
of higher
boiling constituents in the original
liquid mixture.
This distillate
or liquid
drops into a
funnel below the U-bend of the second evaporator tube. Some of this will also be vaporized and carried out through the flame carrester at the top of the box. The remaining
liquid residue, however,
is carried from the
funnel by a tube to o flame arrester which
allows it to drain from the bottom of the box.
Tempemtwo
Controller
SPECIFICATIONS
ANALYZER RESPONSE -
DIMENSIONS -
OPERATING
ELECTRICAL -
2 to 3 minutes.
69” high x 35” wide x 127”
RANGE -
deep.
(npt including
horizontal feet and casters1
-1OO’F. to +8O”F.
115 volts, 60 cycles, 10 amp . l/z” NPS con”.
SAMPLE INLET & OUTLET -
3/s” NPT female con”.
SAMPLE INLET TEMPERATURE -
SAMPLE INLET PRESSURE-
Inlet (Cooler may be required.1
to 350 pounds maximum.
RECORDEROUTPUT CONN. -
RECORDER OUTPUT SIGNAL -
NITROGEN PURGE -
12O’F. maximum
I/>” NPT conduit box, female.
Type J iron constantan thermocouple.
l/4” NPT cow., mole.