Removal of organic chlorine in simulated oil by adsorption

doi:10.16085/j.issn.1000-6613.2017.04.041

Abstract

Abstract: Removal of organic chloride in oil was studied by direct adsorption. MgO/ZSM-5,CuO/ZSM-5,CuO/γ-Al₂O₃ and MgO/γ-Al₂O₃ adsorbents were prepared by saturated impregnation with ZSM-5 zeolite and γ-Al₂O₃ as carrier,CuO and MgO as the active ingredient. The structures of adsorbents were characterized by BET and XRD. Dechlorination performance of the obtained adsorbents was studied in simulated oil. Meanwhile,reaction conditions of the dechlorination experiments were studied on chlorinated organic removal effect. Then, the optimum adsorption conditions were obtained. Experimental results have shown that the effects of dechlorination of MgO/ZSM-5 and CuO/ZSM-5 were better than others and the optimal adsorption conditions were as follows:the loading amount of active ingredient was 12%(w),adsorption temperature was 30℃,the ratio of catalyst to oil was 1:15,the adsorption time was 60min,the dechlorination rate were 62.63% and 56.28% respectively. Finally,the adsorption of single organic chlorides in simulated oil was studied. The adsorbents had different removal effects for the different concentrations of chlorinated organics, which provided experiences and basis for removal of different organic chlorides in naphtha.

Key words: simulated oil, ZSM-5, γ-Al₂O₃, organic chlorine, adsorbent

摘要： 采用直接吸附法对油品中有机氯化物的脱除进行研究。以ZSM-5分子筛和γ-Al₂O₃为载体，以CuO和MgO为活性组分，利用等体积浸渍法制得MgO/ZSM-5、CuO/ZSM-5、CuO/γ-Al₂O₃和MgO/γ-Al₂O₃共4种吸附剂，采用X射线衍射（XRD）、低温氮气吸附-脱附（BET）等方法对吸附剂进行了表征分析，考察了吸附剂对模拟油中有机氯化物的脱除效果，同时考察了脱氯实验的反应条件对有机氯化物脱除效果的影响，得到了最佳吸附条件。实验结果表明：吸附剂MgO/ZSM-5和CuO/ZSM-5脱氯效果较好，其吸附效果的最佳条件为活性组分负载量为12%、吸附温度为30℃、剂油比为1：15、吸附时间为60min，脱氯率分别为62.63%和56.28%。最后通过对单一有机氯化物模拟油的吸附研究，得出吸附剂对不同浓度的有机氯化物脱除效果不同，这为石脑油中不同有机氯化物的脱除提供了经验和依据。

关键词: 模拟油, ZSM-5, &gamma, -Al₂O₃, 有机氯化物, 吸附剂

CLC Number:

TE626

LI Ruili, LI Jingjing, ZHANG Ping. Removal of organic chlorine in simulated oil by adsorption[J]. Chemical Industry and Engineering Progress, 2017, 36(04): 1470-1475.

李瑞丽, 李晶晶, 张平. 吸附法脱除模拟油中有机氯[J]. 化工进展, 2017, 36(04): 1470-1475.

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