Biodiesel manufacturing plant in Lanzarote (Canary Islands)
Biodiesel plants form part of the attempts to resolve environmental problems caused by the non-collection of waste vegetable oil which can result in both land and water contamination. The most interesting option for the use of waste vegetable oil lies in energy recovery, obtaining biofuel and the by-products of glycerol and fertilizer. Approximately 2000 tonnes of waste vegetable oil are generated in the province of Las Palmas each year and, as a consequence, a project has been drawn up for a plant capable of handling 2500 tonnes per year of this material. The waste oil will be subjected to a basic process of continuous transesterification. There are several advantages to this process, principally involving economic benefits, but also including technical guarantees, a minimum environmental impact and a high degree of reliability. Transesterification can be performed at ambient temperature, through mechanical blending of an alcohol, an alkali and the vegetable oil. After a specific blending time and after it has been allowed to stand, the biofuel and glycerol are separated by decantation. The alcohol is used in a proportion of between 15 and 20％, while the alkali is less than 1％ of the initial mixture. The proportion of alcohol used is similar to that of the glycerol that is obtained as a sub product. Part of the alcohol used during the process can be recovered. The biodiesel obtained only requires prior filtering before being used and, since it does not degrade over time, as happens with fossil fuel diesel, it can be simply and economically stored.
Marcial Betancort (A)lvarez Ovidio Pérez Báez Juan Pe(n)a Quintana Ma de la Concepción Ling Ling
Departamento de Ingeniería de Procesos – Tafira Baja s/n 35017 Las Palmas de Gran Canaria – Spain
国际会议
北京
英文
233-237
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）