|The business of treating and recycling waste and slop oil is not an exact science. Although every batch in general has its own unique properties, differences in amounts of "Bottom Sediments and Water (further on referred to as BS & W), specific gravity, tightness of the emulsion, [as determined by the size of the water droplets (water-in-oil emulsion) or oil droplets (oil-in-water emulsion)] and by the amount and type of emulsion stabilizing agents present. The following test procedures are easy to apply and offer a high probability of success.|
Sampling is a vital part of the
test procedure. If the tested oil sample is not representative of the whole
batch to be treated, the conclusions drawn during the test procedure may
be invalid. Samples should be taken from the top, middle, and bottom then
mixed thoroughly. Ideally, a sample should be taken after mixing the entire
contents of the storage tank. Separate samples should be taken at regular
intervals from the pipeline during transfer of the oil.
Normal (waste in oil), or reverse
(oil in water) emulsion?
The difference between BS & W and water content (both on volume basis) equals the BS content. Normally this amount is 1-4%. Generally a BS content of more than 4% is considered high. In such cases, a higher chemical injection is needed.
Fill the test bottles up to just
below the 1 L mark and heat the samples to a temperature of about 20°F
lower than the temperature that can be achieved in the actual facility.
This takes into account the temperature drop that will occur during the
actual treatment, even when the tank is perfectly insulated.
Thoroughly mix in the chemical by
shaking the bottles for about 20 seconds or 1 minute stirring (with magnetic
stirrers). Place the sample bottles in the waterbath or oven and note at
regular intervals the amount of free water and/or the level of the separation
between oil and interphase. Because Alken 862 Demulsifier will
separate the solid particles, salt and sulfur from the oil, into the water
phase, the separated water and the interphase may, on occasion, be colored
as black as the oil. If this occurs, viewing through a strong light may
be necessary to observe the separation.
If there is a significant emulsion layer or there is less than satisfactory separation by seven days time, in all the samples, consider retesting with higher and lower dosage series and also try repeating the test with 60 degrees C heat added.
|| Oily Waste Control || Case Study || Lab Reports || 860 Product Bulletin || 860 Specifications || 860 MSDS || || 862 Product Bulletin || 862 Specifications || 862 MSDS|| 7036 Product Bulletin || 7036 MSDS||