The physical characteristics of bio-oil from fast pyrolysis of rice straw

Shou Yin Yang, Chih Yung Wu, Kun Ho Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Rice straw is one of the main renewable energy sources in central and south Taiwan. In this study, bio-oil was produced from rice straw using a bench-scale plant that included a fluidized bed, a char removal system, and an oil collection system using an oil-recycling spray condenser. We investigated the effects of pyrolysis temperature and carrier gas flow rate on the distribution of products and on the properties of the bio-oil obtained. Experiments were conducted at reactor temperatures of 350-500 °C with carrier gas flow rates of 7.5-15 L/min and a feed rate of 1 kg/h. The results indicated that the optimum reaction temperature and carrier gas flow rate for the production of bio-oil were 450 °C and 10 L/min, respectively. The highest percentage of bio-oil in the products in these experiments was 41.3 wt%. The pH value of the bio-oil was ∼4.1 and the viscosity was ∼9 cSt (at 25 °C), depending on the storage time, temperature, and char content. This study establishes the operating parameters of a biomass fast pyrolysis system and provides some properties of rice straw bio-oil relevant to storage and use.

Original languageEnglish
Title of host publicationMechatronics and Materials Processing I
Pages881-886
Number of pages6
DOIs
Publication statusPublished - 2011 Sep 28
Event2011 International Conference on Mechatronics and Materials Processing, ICMMP 2011 - Guangzhou, China
Duration: 2011 Nov 182011 Nov 20

Publication series

NameAdvanced Materials Research
Volume328-330
ISSN (Print)1022-6680

Other

Other2011 International Conference on Mechatronics and Materials Processing, ICMMP 2011
CountryChina
CityGuangzhou
Period11-11-1811-11-20

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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