INDUSTRIAL and SCIENTIFIC

boiling point temperatures of petroleum pro-

ducts from the 5% point to the end point

in the temperature range of 150* to 700" F.

Fast response time, excellent repeatability and

simplicity of design combine to provide an

instrument ideally suited for continuous moni-

toring of refinery streams.

The capability of selecting any boiling point

between the 5% and end point without the

need to add or change components makes

this the most versatile boiling point analyzer

available. The simplicity of design and re-

liable solid state electronics eliminate most of

the costly down time.

Although the operation of the DISTILLATION ANALYZER is not a duplication of the ASTM distillation

test method, the results may be readily correlated with the ASTM boiling points.

APPLICATIONS

Several typical applications for the Analyzer are listed below

Catalytic Reformer Feed Stocks

Jet Fuels

Gasolines

Intermediate Products

Crude Distillation

Catalytic Cracker _ Fractionation

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OPERATION The conditioned sample is metered to the Analyzer by one head of a duplex pump at a rate of 25 ml/min. Before entering the analyzer, the sample is preheated in a tube-in-tube heat exchanger. Further heating occurs in a preheating coil in the boiler. The sample expands through a check valve into the flash cup which is vented to the atmosphere, allowing highly volatile components to escape. The remaining liquid is directed onto an evaporator tube. As the sample flows down the evaporator tube, the desired percent overheads ore boiled off. The residue dropping off the end of the evaporator is collected in a bottoms cup where its temperature is measured by a thermocouple. Sample in the bottoms cup is pumped off at a con- stant predetermined rate. The liquid level in the cup is sensed by CI float to which is attached a lever whose opposite end is a light blocking shield. As the float position changes, the shield varies the amount of light reaching the photocell, thereby, changing its resistance. The photocell resistance determines the rate of charging of a capacitor w,hich, in turn, controls the firing of a uniiunction transistor. When the tran- sistor fires, it energizes a pulse transformer, firing an SCR. The rate of charging of the capacitor determines the phase angle at which the SCR fires and, consequently, the wattage output of the heater. Changing the heater output changes the boiling rate, thereby, maintaining the liquid level in the cup.

GENERAL DESCRIPTION The evaporator, flash cup, bottoms cup, level control cup, preheating coil and check valve are all con- tained within one explosion-proof housing mounted on a vertical steel frame. The lamp and photocell are contained in an explosion-proof housing adjacent to the boiler housing. Vapors are prevented from enter- ing the photocell housing by a flexible diaphragm which also serves as the fulcrum for the float-to-light shield lever. The solid state electronics are contained in another explosion-proof housing.

DESCRIPTION OF COMPONENTS Housings-The separate housings for the boiler assembly, photocell, and electronics are explosion-proof boxes designed for use in Class 1, Group D, Division 1 areas. The housings and other components are moun- ted on a welded steel channel fram,e.

Sample Flow Control-Sample flow rate to the analyzer is maintained by one head of CI duplex dia-

phragm-type metering pump. The removal of liquid from the bottoms cup is controlled by the second head

of the some pump.

Sampling System-The sampling system supplied with ihe standard analyzer consists of a Hallikainen

Model 1363 FILTER-COALESCER, two rotometers (one for sample flow and one for coalescer bypass), associa-

ted block and metering valves and gauges, all piped and mounted.

Filter-Coalescer-Combiner the functions of filtration and coalescing in one unit. The self-cleaning filter

is capable of removing particles greater than 2 microns in size. The moior portion of ihe sample passes

through ihe unit as a sweepstream while a fraction is routed through the combination element where it is

filtered and all free water is coalesced. The coalesced water is coniinuously removed and returned to

the sweepstream. See separate brochure for additional details.

Rotameters-Provided to m.easure the flow rate to the analyzer and the coalescer by-pass flow.

Boiler-The boiler assembly contains ihe preheating coil, back pressure valve, flash cup, evciporator

and bottoms cup. The sample inlet, bottoms take-off and overhead condensation pass through connections

al the bottom of the boiler. Highly volatile fractions are removed from the boiler through the explosion-

proof boiler vent.

Evaporator Tube-The evaporator consists of a stainless steel tubular immersion heater wound around

a stainless steel tube. The heater is rated at 350 watts at 115 volts A.C.

Thermocouple-The sheathed thermocouple is coaxial with the evaporator tube, its j&ion is immersed

in the liquid in the bottoms cup. The thermocouple is Type J (iron constantan].

Level D&e&-The light source and photocell are located in on explosion-proof enclosure adjacent to

the boiler explosion-proof enclosure.

Electronics-The solid state electronics are enclosed in CI separate explosion-proof box

GENERAL SPECIFICATIONS

Percent Recovered Range - 5% to End Point.

Normal Operating Range - 15O'F to 7OO'F.

Inlet Sample Temperature Limitations - Sample must be below its initial boiling point temperature, and,

for maximum coalescer efficiency, should be ~1s cool as possible.

Maximum temperature at coalescer, 250°F. Maximum temperature

at pump, 150°F. (A sanxple cooler can be supplied as an accessory

at extra cost.]

Sample Flow Rate - approximately 25 ml/min. [approx. `/z gal/hr.l

Filter Rating - 2 microns or better.

COALESCER Water Removal Ability - All free water at the stream temperature is removed by the coalescer

from, the volume of sample required at the analyzer.

Materials of Construction - All metal parts in contact with the sample are stainless steel

Recommended Installation - Overhead weather protection is desirable. Where freezing tempercltures are ex-

pected, heating of the shelter is recommended.

Inlet Sample Pressure Limitations Approximately 15 to 200 psig.

Time Constant for Step Change - Approximately one minute.

Sweepstream Sample In Jf8" NPT female connection provided - `I/ pipe recommended.

Sweepstream Sample Out - %" NPT female connection provided - %" pipe recommended.

Sample Out From Analyzer - %" NPT male to sewer or recovery system.

Signal Out - Type J [iron-constantan) thermocouple %" NPT female connection.

UTILITIES

Electrical - 115 volts A.C. t lo%, 600 watts max. Connections are for %-inch conduit.

Water - Used only when sample cooler is provided.

DIMENSIONS Approx. 423/," wide x 24" deep x 72'1," high - without horizontal feet and casters

Approx. 423/," wide x 24" deep x 77" high - with horizontal feet and casters.

NET WEIGHT

Approx. 300 Ibs. without horizontal feet or casters

GROSS SHIPPING WEIGHT Approx. 450 Ibs.