In this paper,the effects of de-alkalized red mud on the distribution of food waste pyrolysis products at different pyrolysis temperatures were investigated using a fixed bed reactor,Gas Chromatography-Mass Spectrometry(GC-MS),Fluorescence Spectrophotometry(UV-F),and In-Situ Infrared(In-situ DRIFTS).The results showed that under the same pyrolysis temperature,the formation of pyrolysis gas was inhibited and the production of pyrolysis oil was promoted,with the highest yield of 39.46％at 450℃,by de-alkalized red mud.The pyrolysis oil was mainly dominated by fatty acids,N compounds,and esters.Not only was the decomposition of triglycerides promoted to produce long-chain carboxylic acids but also the cleavage of proteins was promoted to produce aromatic proteins by de-alkalized red mud,which led to the increase of acid content and deepening of the degree of aromatization in the pyrolysis oil.Meanwhile,the significant growth of carboxylic acid functional groups and C≡N absorption peaks in pyrolysis coke further confirmed that the de-alkalized red mud could promote the production of acids and N compounds in pyrolysis oil.
关键词
脱碱赤泥/餐厨垃圾/催化热解/热解油产物分布
Key words
de-alkalized red mud/kitchen waste/catalytic pyrolysis/pyrolysis oil product distribution
维普
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