Jayne Products’ Approach
On the Job Problem
Solving
F.A.Q.s
Q-1 How
is it determined if the JPX-JPX-E solution is spent?
Collect the circulating JPX/JPX-E solution
in a glass jar. Tighten the lid and shake the jar vigorously. After shaking the jar,
slowly rotate the jar on its side and see if the jar wall is coated with oil. If the jar wall is
coated with oil, the circulating solution is spent. If the jar wall is water wet, then JPX/JPX-E
solution still has emulsifying power. If the jar wall is coated with oil,
then either:
a)
Drain
the circulating solution and make up a fresh JPX/JPX-E solution or:
b)
Add
additional JPX/JPX-E to the circulating solution.
Q-2 How much JPX/JPX-E should
be added to the circulating solution?
Since this will be difficult, if not
impossible, to learn the quantity of hydrocarbon contamination in the system, one way
to determine how much additional JPX/JPX-E will need to be as follows:
Measure the volume of circulating
JPX/JPX-E collected in the glass jar. (A-1) to this Jar, add a known quantity of
JPX/JPX-E. For example: If the volume of circulating JPX/JPX-E is 400 ml, then add 0.5%
of JPX/JPX-E or 2 ml. Shake the jar vigorously and see if the glass is coated with
oil. If the glass is coated with oil, add another 0.5% of JPX/JPX-E and repeat the test
till the oil no longer coats the glass wall. If you have used more than 1.5% to 2.0% JPX/JPX-E,
then you will be better off draining the current circulating JPX/JPX-E solution and
starting fresh because there is too much hydrocarbon left in the system.
Q-3 What happens if you see “mayonnaise” in the
circulating solution?
Increase the temperature, if possible, to
200º to 220ºF. If that does not break the “mayonnaise”, then dilute it with
water keeping the temperature between 200º-220ºF.
Q-4 How much JPX-EE to use in rinse to
eliminate pyrophoric problem and how to test
results?
Use about 5% JPX-EE in the rinse water. (this
is not practical to calculate) so rule of thumb is to use a third of the total
of the JPX/JPX-E that was (Vapor Phase) injected into the column. To test take a 5ml
sample of rinse water and add 95ml water and 5% Potassium Permanganate
to the solution. If the result shows light pink or light brown the pyrophoric material is passivated, if
dark brown add another drum of JPX-EE and continue rinse.
Q-5 How long will
it take for the JPX/JPX-E oil emulsion drained from the column to break.
Test
by pulling a 1 liter sample in a bottle typically you will see an oil
separation in less than an hour, as the sample settles
and cools. To assure a more rapid separation one can add ½% calcium chloride to the
effluent. For jobs greater than 25 drums used in 24 hours the drained effluent can be routed
to a slop tank to provide additional separation of oil and water. Typical small jobs, the
drained effluent is routed directly to the API separators of the refinery ETP unit.
