废食用油催化裂解产物组成研究 |
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引用本文: | 郭丹 关明华 初人庆. 废食用油催化裂解产物组成研究[J]. 石油炼制与化工, 2019, 50(12): 96-101 |
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作者姓名: | 郭丹 关明华 初人庆 |
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作者单位: | 1. 中国石化大连(抚顺)石油化工研究院 |
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摘 要: | 以废食用油为原料,在自制DY催化剂上进行催化裂解反应,并采用核磁共振氢谱(1H-NMR)和碳谱(13C-NMR)、气相色谱仪、色-质联用仪分析原料油和生成油的结构、组成变化。试验结果显示,废食用油催化裂解生成24.88%的气体、41.03%的汽油馏分、21.73%的柴油馏分、2.53%的重油馏分、1.03%的焦炭和8.80%的水。与原料油的核磁共振图谱不同,催化裂解生成油的1H-NMR中烯氢谱峰较弱、芳氢谱峰很强,13C-NMR中没有明显的羰基碳和甘油基碳谱峰。烃组成分析结果表明:汽油馏分中饱和烃质量分数约为53.4%,芳烃质量分数约为34.8%;柴油馏分芳烃质量分数为87.4%,其中烷基苯质量分数为43.4%;重油馏分芳烃质量分数高达98.5%,以四环芳烃居多,其质量分数为49.5%。
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关 键 词: | 废食用油 催化裂解 核磁 烃组成 汽油 |
收稿时间: | 2019-04-25 |
修稿时间: | 2019-08-27 |
STUDY ON COMPOSITIONS OF CATALYTIC CRACKING PRODUCTS OF WASTE COOKING OIL |
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Abstract: | The catalytic cracking reaction of waste cooking oil was studied on self-made DY catalyst. The structure and composition of raw material and liquid products were characterized by 1H-NMR, 13C-NMR, gas chromatograph and gas chromatograph-mass spectrometer techniques. The results showed that the catalytic cracking reaction produced 24.88% of gas, 41.03% of gasoline, 21.73% of diesel, 2.53% of heavy oil, 1.03% of coke and 8.80% of water. Unlike the NMR spectra of raw material, 1H-NMR spectra of liquid products displayed weak peaks of alkene hydrogen, but strong peaks of aromatic hydrogen. Meanwhile, 13C-NMR spectra of liquid products observed no obvious peaks of carbonyl carbon or glycerol-based carbon. The results of hydrocarbon group composition analysis showed that gasoline product contained 53.4% of saturation and 34.8% of aromatics; 87.4% of diesel components were aromatic hydrocarbons, and 43.4% were alkylbenzenes. The mass fraction of aromatic hydrocarbons in heavy oil reached 98.5%, in which the mass fraction of four ring aromatic hydrocarbons was about 49.5%. |
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Keywords: | waste cooking oil catalytic cracking NMR hydrocarbon composition gasoline |
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