Adsorption characteristics of SO2, NO by steam activated biomass chars

作者：Lu Fei^*; Shu Tong; Wang Kuan; Lu Ping

来源：7th International Symposium on Coal Combustion: Cleaner Combustion and Sustainable World, ISCC , 2011-07-17 to 2011-07-20.

• Activation temperatures
• Adsorption characteristic
• Adsorption efficiency
• Biomass char
• Fast pyrolysis
• Fixed bed reactor
• Internal structure
• Nanjing , China
• Nitrogen adsorption-desorption
• NO concentration
• Optimal conditions
• Pyrolysis temperature
• Rice husk
• SO2
• Steam activation
• Theoretical basis
• Total pore volume
• Wheat straws

Wheat straw and rice husk collected from the suburb of Nanjing, China, were prepared to different kinds of steam activated biomass-based chars, and the adsorption characteristics of the biomass-based chars was carried out in a fixed bed reactor. The specific surface area and pore structure of different biomass chars were measured by nitrogen adsorption-desorption analysis instrument at 77K. The effects of biomass type, pyrolysis temperature, heating rate, activation temperature and concentration of SO2, NO on the adsorption efficiency of SO2, NO were analyzed. The results indicated that the steam activation has significant effects on the specific surface area, total pore volume and micro-morphology of biomass chars by improving the internal structure. The adsorption efficiency of SO2, NO increased with the decreasing of SO2, NO concentration in the experimental range. The optimal condition of char preparation (873K, fast pyrolysis) and steam activation (1073K) was proposed based on the adsorption efficiency and adsorption volumn of SO2, NO. It builds a theoretical basis for industrial applications of biomass.

• 出版日期2012
• 单位南京师范大学