Thermal Properties and Burning Efficiencies of Crude Oils and Refined Fuel Oil

Abstract

The thermal properties and burning efficiencies of fresh and weathered crude oils and a refined fuel oil were studied in order to improve the available input data for field ignition systems for the in-situ burning of crude oil on water. The time to ignition, surface temperature upon ignition, heat release rate, burning rate and burning efficiency of two fresh crude oils fires, however, was estimated to be about 17 kW/m 2 , for which the burning efficiencies were < 80%. These results indicate that the increased heat feedback to the fuel surface is not the only factor that increases the burning efficiency for large scale fires compared to laboratory experiments. Additional factors such as feeding of surrounding oil into the fire by buoyancy induced wind flows into the hot smoke plume are probably also contributing to these increased burning efficiencies.

Enhancing energy recovery of wastewater treatment plants through hydrothermal liquefaction

“…, 145 °C). 66 This indicates that the biocrudes obtained from the HTL of both SS and digestate contained a higher amount of light organic compounds which require less energy for decomposition, 67,68 resulting in an easier ignition and shorter burnout than other biocrude alternatives.…”

“…The ignition temperature was lower than that found in the oil derived from SS pyrolysis (i.e., 200 °C) 65 and the oil derived from food waste HTL (i.e., 217-255 °C), 62 but higher than that in refined crude oil (i.e., 145 °C). 66 This indicates that the biocrudes obtained from the HTL of both SS and digestate contained a higher amount of light organic compounds which require less energy for decomposition, 67,68 resulting in an easier ignition and shorter burnout than other biocrude alternatives.…”