paraffin wax deposition and fouling

two hours, the deposits were observed to wear off at the leac.ing
decreased with concentration. .u e:neriaenta ffmes aeachi:.
The paraffin deposits were found to cover the deoosition
indicating higher deiDosition rates, as shown in fiLure
with tiae to reach a final fluctuating value.
::laue ever.y. The deosits were firm, although the fir:ness
This final value was reached faster at gher coactrations,
sance most c:mae ram•maua.. resu_us mactea a corre_a;:c:.
as ffscusees an cuima 4, mas an obvious source of error. -an;
parucusr srcsiuaon curve, ‘:ere obusaned in a ranso::. crser.
aciptotic nature of paraffin deposition.
able deposition curves were, however, obtained and did shoW the
each run, the amount of wax depositing could vary reatly. asan—
._unouga every care was ;aen to rerocuce ;ne sa.me proceanres in
The main ex-3erimer.tal problem was that of reproducibility.
5.6.2 Cc a:-ability of results
with increasing flowrate.
-s ex-Dectea, the amount of paraffin wax depositang decreases
thickness was reached.
was consac.eres ;aat the deposits broke town wnen a certain crztaca_
o: the paraffin aeposits increases wits time ans concentration, at
tion and experimental time were increases. \o;ing ;na; ;ne tnac.ness
vaaenty tae paraffan deposaus Droe sown sooner as concr.::a—
a; gave ;ae nagacs; deposazon rae
concentration run aid no; produce the hignest linal va_ne, a;aougn
plate once renovea from the deooston anct
edge of the deposition plate. The deposits did not slide off the
— 5_ —
r. the three runs ;here the 51/54°C wax was used, the :i:st
Th resuce mae rossao:i;y o: ransom errors, mae paa;s or. a
mae ::emaoa maca to c.euer.:.ane mae amount of aepzsa;ea max,