Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental research on oxygen-enriched gasification of straw in an entrained-flow gasifier
Biomass (straw) gasification with oxygen-enriched air was studied in a lab-scale entrained-flow gasifier. Effects of oxygen concentration (OC), equivalence ratio (ER), and reactor temperature on the produced gas composition, gasification index and tar yield were investigated. Compared with air, oxygen-enriched air as gasifying agent was beneficial to increase the H2 content, H2/CO ratio, and lower heating value (LHV) of the gas, and decrease the yield of tar contained in the flue gas. The H2/CO reached 1 when OC was 50&percent;, which was an optimal value for dimethyl ether, methanol, and higher alcohol production in the process of alcohols synthesis. A reference value of OC was given approximately to 40&percent; according to economic consideration. A reference value of ER was given around 0.25 when OC was 40&percent;, achieved a relatively high LHV of 8.2 MJ/Nm3 and low tar yield of 2.6 mg/g. In addition, high reaction temperature could improve both gas quality and gasification indexes significantly. The better gasification performance achieved in the paper verified that the oxygen-enriched gasification was a good option for the improvement of direct air gasification.
Experimental research on oxygen-enriched gasification of straw in an entrained-flow gasifier
Biomass (straw) gasification with oxygen-enriched air was studied in a lab-scale entrained-flow gasifier. Effects of oxygen concentration (OC), equivalence ratio (ER), and reactor temperature on the produced gas composition, gasification index and tar yield were investigated. Compared with air, oxygen-enriched air as gasifying agent was beneficial to increase the H2 content, H2/CO ratio, and lower heating value (LHV) of the gas, and decrease the yield of tar contained in the flue gas. The H2/CO reached 1 when OC was 50&percent;, which was an optimal value for dimethyl ether, methanol, and higher alcohol production in the process of alcohols synthesis. A reference value of OC was given approximately to 40&percent; according to economic consideration. A reference value of ER was given around 0.25 when OC was 40&percent;, achieved a relatively high LHV of 8.2 MJ/Nm3 and low tar yield of 2.6 mg/g. In addition, high reaction temperature could improve both gas quality and gasification indexes significantly. The better gasification performance achieved in the paper verified that the oxygen-enriched gasification was a good option for the improvement of direct air gasification.
Experimental research on oxygen-enriched gasification of straw in an entrained-flow gasifier
Yu, Haimiao (Autor:in) / Li, Zeshen (Autor:in) / Yang, Xianyu (Autor:in) / Jiang, Linhong (Autor:in) / Zhang, Ze (Autor:in) / Chen, Dezhen (Autor:in)
Journal of Renewable and Sustainable Energy ; 5 ; 053127-
01.09.2013
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Simulation of Rice Straw Oxygen-Steam Gasification in an Entrained-Flow Gasifier Using ASPEN PLUS
| British Library Conference Proceedings | 2011