paraffin wax deposition and fouling

— 34
.4 ‘mrii:ntal Solution
The
oeritDontal solution used was a 51/5°C noraffiri wax in
commercial grade kerosene.
It’s ohysical properties arc given in
flCiX 1
The solution nrovi’Jc$ a simale ohysical fouling model.
y
its nature, the solution din not change its ororertics during use,
and could trefcre be used again and again.
!ith tac large canaity o the circulatlon system, wax cxDOsitei
was such a sr:ali fraction of the total, that composition during each
run could be considered constant.
L5
:Dr:ianta: procedure
4.5.1 :nt:cduction
The exnerir:en;al orocedure has been descrid in detnal 1r
\iaer ‘.
n tac present stunies ony the ast concen:rat:cn cy
aer was usen. This SOUtiOfl was 26.L1 rer cent weigat oara:::n
wax. The cloud point of the solution was 32°C.
L52 Startut of Circulation System
To
start ur the circuation system, the steam suoal:r to ne
holding tank was turned on to me..t the aclidified paraffin wax in
kerosene soiut:on.
Comalete me;1ng took acout a nay at ;ne enc.
of which t:te s:ea. tracing was turned on.
Then an tne _iiifc.
exueranen;a.. sou:aon in sac oioewor nan menten,
sac nstc.e stea:
tracIng was turnec. o::.
L5)
Star:us o:Ths: neestons
The ses-: sectons nac. oreviousy Dee:.
ceanen wita carcon
;e;racaloride.
This was done by removing them and fialia’ wiTh
carcon tetrac.Thorise for about an hour.
This was :coec.te. several
times unta_ an e:caa:na;aon visa a sma_. iiameter rsrectioa
scope showed the,: to be cca:: ‘Ther. ary.
: stars The crcu.a.uaon iZong she main and ye :urn lines
valve in the
aTh siraline via orenea and one test sco v_ca ct.n..