000 02325nab a2200205 4500
005 20260520000837.0
008 260224s2009 xxu
245 0 0 _aSteam cracking and steam reforming of waste cooking oil in a tubular stainless steel reactor with wall effects
260 _a
_b
_cnov./dic. 2009
270 _a08/06/2010 ; 08/06/2010
300 _a13 p. ; 5663-5676
520 _aTranscripción del resumen del autor. Energy production from renewable feedstocks that would simultaneously solve ecological problems related to waste disposals would be very attractive. The present work is aimed at showing that atmospheric pressure thermal cracking of waste cooking oil in the presence of steam would be a potential option, particularly when the operating conditions direct the process either toward steam cracking or toward steam reforming in order to produce specific target bioenergy vectors: hydrogen, synthesis gas, or gaseous fuel. A commercial crude waste cooking oil (VEG) was selected as feed material. Using a bench-scale continuous flow tubular stainless steel reactor, experiments were conducted to study the final product distribution as a function of temperature, residence time of the feed material, extent of dilution, addition of a cracking initiator, and addition of a surface catalytic effect inhibitor. Several operating conditions of the VEG thermal cracking in the presence of steam were identified to meet the above-mentioned objectives. Particularly, when operating steam reforming at 800 °C with a very low steam-to-carbon ratio (less than 1), VEG was totally converted into synthesis gas in a hydrogen-to-carbon monoxide molar ratio close to 2 (favorable for low-temperature Fischer-Tropsch catalysis), with additional hydrogen and light-hydrocarbon (methane, ethylene, propylene) production reaching 40 and 27 mol %, respectively. Further investigations (conducted with the same equipment) confirmed the occurrence of strong reactor wall effects that led to the formation of coke deposits with catalytic activity during the VEG steam cracking and steam reforming.
581 _a6
773 0 _tEnergy & fuels
_g23
942 _cARTICULO
100 1 _aGornay, Julien
_942316
100 1 _aConiglio, Lucie
_942317
100 1 _aBillaud, Francis
_942318
999 _c170803
_d170803