The Production of bio-oil from rice straw in a bench scale plant equipped with a fluidized bed and a hot filter

摘要

In order to produce bio-oil from rice straw, a bench scale plant equipped with a fluidized-bed and a hot filter was applied. We investigated the influence of reaction temperature on the production of bio-oil, the efficiency of a char-separating system, the content of alkali metals after deashing and the influence of fluidizing medium on the product spectrum. To elucidate the temperature dependence on the production of bio-oil, experiments were conducted in the range of 400 and 600 ℃ with a feed rate of about 1.3 kg per hour. Mass balance was established in each experiment. Additionally, analysis of product gas and oil was conducted using GC and GC-MS system. Char separating system is composed of a cyclone and a hot filter. After every experiment, we examined the particle distribution of each char and the content of solid in bio-oil to demonstrate the efficency of the separating system.