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A steady-state heat-transfer model is presented for the formation of a deposit-layer from wax–solvent ‘waxy’ mixtures in a pipeline under turbulent flow. The waxy mixture is taken to enter the pipeline under the single-phase hot flow regime (where the average mixture temperature is higher than its wax appearance temperature, WAT) and, upon gradual cooling, the mixture transitions into the cold flow...
The wax precipitation temperature (WPT) of several compositions of a multicomponent “waxy” mixture, comprising Parowax in Norpar13, was measured at controlled cooling rates. The results of this study indicated that the WPT of a “waxy” mixture is not a constant property, as it varied with the cooling rate. The measured results were expressed as a function of the cooling rate and mixture composition...
The liquid-solid phase behaviour and thermal characteristics of n-C 25 H 52 + n-C 28 H 58 and n-C 44 H 90 +n -C 50 H 102 binary systems have been studied using differential scanning calorimetry (d.s.c.). Both the melting and crystallization thermograms for n-C 25 H 52...
The thermal behaviour of selected polymorphic even-numbered and odd-numbered n-alkanes, namelyn -C 23 H 48 n-C 25 H 52 , n-C 28 H 58 ,n -C 30 H 62 , n-C 33 H 68 , n-C 34 H 70 andn -C 37 H 76 was studied using differential...
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