作　　者： ; ; ; ; ; ;

机构地区： 湖南大学环境科学与工程学院环境生物与控制教育部重点实验室

出　　处： 《中国环境科学》 2010年第2期197-203,共7页

摘　　要： 利用直接热化学液化技术,在1000mL的反应釜中,考察了液化温度、污泥/溶剂配比(R1)、催化剂以及溶剂填充率(R2)对污水厂污泥在亚/超临界丙酮中的液化行为的影响.结果表明,约300℃条件下,污泥液化较为彻底,过低或过高的温度液化效果反而较差.当温度超过340℃时,丙酮溶剂参与反应能力增强,促进油产率的增加,至380℃时油产率保持稳定.在其他液化条件相同的情况下,发现污泥在R1为10/200、R2为20%、添加5%剂量的NaOH作为催化剂,获得较好的液化效果.红外光谱(FTIR)和气相色谱/质谱分析(GC-MS)分析表明,生物油的主要成分是含氮杂环、羧酸、酯、酮等化合物,主要的官能团包括胺基、羟基、烷基和羰基等. Direct thermochemical liquefaction was adopted to convert sewage sludge into bio-oil,and the influences of the temperature,the ratio of sewage sludge to solvent（R1）,catalyst and the volume ratio of solvent to reactor（R2） on the characteristics of the liquefaction of sewage sludge were investigated with the sub-and supercritical acetone as the solvent in a 1000mL autoclave.It was shown that the sewage sludge was basically converted at about 300℃,while at higher or lower temperature,the effect of liquefaction was worse.When the temperature was higher than 340℃,the ability of the acetone involving in the reaction obtained enhancement so that the yield of bio-oil was improved as far as 380℃.As other liquefaction conditions were consistent,the liquefaction of sewage sludge could gain a better effect at R1 10/200,R2 20% and adding 5% dosage NaOH as the catalyst.The FTIR（Fourier transformation infrared spectrometer） and GC-MS（gas chromatography-mass spectrometry） analyses indicated that heterocyclic nitrogen compounds,carboxylic acid,ester and ketone were the main components of the bio-oil and amidocyanogen,hydroxyl,alkyl and carbonyl were the main functional groups.

关 键 词： 污水厂污泥 直接热化学液化 亚 超临界丙酮 生物油

领　　域： [环境科学与工程]