Measurement of the Liquid−Deposit Interface Temperature during Solids Deposition from Wax−Solvent Mixtures under Static Cooling Conditions

Autor:	Hamid O. Bidmus, Anil K. Mehrotra
Rok vydání:	2008
Předmět:	Wax Chemistry Precipitation (chemistry) General Chemical Engineering Energy Engineering and Power Technology Thermodynamics Coolant Solvent Fuel Technology Coolant temperature visual_art Shear stress visual_art.visual_art_medium Deposition (phase transition) Composite material Wax Solvent
Zdroj:	Energy & Fuels. 22:1174-1182
ISSN:	1520-5029 0887-0624
Popis:	The liquid−deposit interface temperature for solids deposition was measured under static cooling (i.e., without any induced shear stress) from prepared mixtures of a petroleum wax (C20−C40) and a multicomponent paraffinic solvent (C9−C16) at different coolant temperatures. Two designs for the cooling of wax−solvent mixtures were developed for monitoring the temperature at fixed radial locations in a cylindrical vessel. The wax−solvent mixture was cooled from a temperature higher than its wax appearance temperature (WAT), and the movement of the liquid−deposit interface was obtained from the rate of change of temperature at different radial locations. The deposit-layer thickness increased more rapidly with a larger heat-transfer area and a lower coolant temperature. The interface temperature was observed to be equal to the WAT of the wax−solvent mixture, and it decreased slightly when the liquid-region temperature became less than the WAT of the original mixture (causing the precipitation of wax crystals)....
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3511698cb775758cff893bec68a1c360 https://doi.org/10.1021/ef700588y Zobrazit plný text záznamu