Kantarelis E, Zabaniotou A
Department of Chemical Engineering, Aristotle University of Thessaloniki, Un. Box 455, University Campus 54124, Thessaloniki, Greece.
Bioresour Technol. 2009 Jan;100(2):942-7. doi: 10.1016/j.biortech.2008.07.061. Epub 2008 Sep 9.
In the present study, the potential of cotton stalks utilization for H(2) and syngas production with respect to CO(2) mitigation, by means of thermochemical conversion (pyrolysis and gasification) was investigated. Pyrolysis was conducted at temperature range of 400-760 degrees C and the main parametric study concerned the effect of temperature on pyrolysis product distribution. Atmospheric pressure, air gasification at 750-950 degrees C for various lambda (0.02-0.07) was also studied. Experimental results showed that high temperature favors gas production in both processes; while low lambda gasification gave high gas yield. Syngas (CO and H(2)) was increased with temperature, while CO(2) followed an opposite trend. By pyrolysis, higher H(2) concentration in the produced gas (approximately 39% v/v) was achieved and at the same time lower amounts of CO(2) produced, compared to air gasification.
在本研究中，通过热化学转化（热解和气化）方法，研究了利用棉秆生产氢气和合成气以减少二氧化碳排放的潜力。热解在400 - 760℃的温度范围内进行，主要参数研究涉及温度对热解产物分布的影响。还研究了大气压下、750 - 950℃不同λ值（0.02 - 0.07）的空气气化情况。实验结果表明，高温有利于两个过程中的产气；而低λ值气化产生的气体产率较高。合成气（CO和H₂）随温度升高而增加，而CO₂则呈相反趋势。通过热解，与空气气化相比，所产生气体中的H₂浓度更高（约39% v/v），同时产生的CO₂量更低。
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