Kumar Ajay, Eskridge Kent, Jones David D, Hanna Milford A
Industrial Agricultural Products Center, University of Nebraska-Lincoln, Lincoln, NE 68583, USA.
Bioresour Technol. 2009 Mar;100(6):2062-8. doi: 10.1016/j.biortech.2008.10.011. Epub 2008 Nov 22.
In this study, thermochemical biomass gasification was performed on a bench-scale fluidized-bed gasifier with steam and air as fluidizing and oxidizing agents. Distillers grains, a non-fermentable byproduct of ethanol production, were used as the biomass feedstock for the gasification. The goal was to investigate the effects of furnace temperature, steam to biomass ratio and equivalence ratio on gas composition, carbon conversion efficiency and energy conversion efficiency of the product gas. The experiments were conducted using a 3x3x3 full factorial design with temperatures of 650, 750 and 850 degrees C, steam to biomass ratios of 0, 7.30 and 14.29 and equivalence ratios of 0.07, 0.15 and 0.29. Gasification temperature was found to be the most influential factor. Increasing the temperature resulted in increases in hydrogen and methane contents, carbon conversion and energy efficiencies. Increasing equivalence ratio decreased the hydrogen content but increased carbon conversion and energy efficiencies. The steam to biomass ratio was optimal in the intermediate levels for maximal carbon conversion and energy efficiencies.
在本研究中，热化学生物质气化在一台实验室规模的流化床气化炉中进行，使用蒸汽和空气作为流化剂和氧化剂。酒糟，一种乙醇生产过程中不可发酵的副产物，被用作气化的生物质原料。目的是研究炉温、蒸汽与生物质比以及当量比对气体组成、碳转化效率和产物气能量转化效率的影响。实验采用3×3×3全因子设计，温度为650、750和850℃，蒸汽与生物质比为0、7.30和14.29，当量比为0.07、0.15和0.29。发现气化温度是最具影响力的因素。提高温度会导致氢气和甲烷含量增加、碳转化率和能量效率提高。增加当量比会降低氢气含量，但会提高碳转化率和能量效率。蒸汽与生物质比在中间水平时对于最大碳转化率和能量效率是最佳的。
