低共熔离子液体脱除柴油中氮化物

李文深; 郭小雯; 刘进博; 刘洁

低共熔离子液体脱除柴油中氮化物

辽宁石油化工大学化学化工与环境学部, 辽宁抚顺 113001

详细信息

中图分类号: TE622.1
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出版历程
- 收稿日期: 2017-10-23
- 修回日期: 2018-01-16
- 网络出版日期: 2021-01-23
- 刊出日期: 2018-03-10

Removal of nitrogen compounds from diesel oil with eutectic ionic liquid

College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China

More Information

Corresponding author: LI Wen-shen, Tel: +13842352536, E-mail: lj13898309829@163.com

摘要

摘要: 合成低共熔离子液体氯化胆碱/草酸，采用红外光谱和核磁共振氢谱对其结构进行表征并以模型柴油和焦化柴油为原料考察其脱氮性能。结果表明，在萃取时间30 min，萃取温度30 ℃，剂油质量比1：7和沉降时间2 h的条件下，喹啉脱除率近100%，吲哚脱除率为88.05%。进一步研究发现，该离子液体对焦化柴油中的氮化物也表现出较好脱除性能，在实验条件下，碱氮和总氮脱除率分别为96.61%、71.5%，且该低共熔离子液体经回收重复使用四次后，对焦化柴油的碱氮脱除率仍可达到87.2%。
- 氯化胆碱/草酸低共熔离子液体 /
- 脱氮 /
- 喹啉 /
- 吲哚 /
- 焦化柴油
Abstract: An eutectic ionic liquid (EIL), choline chloride/oxalic acid, was synthesized and its structure was characterized with FT-IR spectroscopy and ¹H-NMR. The denitrogenation performance of the EIL was investigated in detail using model oil and coker diesel oil as feedstock. Experimental results show that the removal efficiencies of quinoline and indole are almost 100% and 88.05%, respectively at 30℃ with the EIL to oil ratio of 1:7 (mass ratio), extraction time of 30 min and settling time of 2 h. It is also found that the choline chloride/oxalic acid presents a better denitrogenation performance for coker diesel oil, and the basic and total N-extraction efficiency can reach 96.61% and 71.5%, respectively. In addition, the basic N-removal efficiency can still reach 87.2% after four recycles of the EIL.
- EIL choline chloride/oxalic acid /
- denitrogenation /
- quinoline /
- indole /
- coker diesel oil

HTML全文

图 1 氯化胆碱/草酸、草酸和氯化胆碱的红外光谱谱图

Figure 1 FT-IR spectra of choline chloride/oxalic acid, oxalic acid and choline chloride

a:choline chloride/oxalic acid; b:oxalic acid; c:choline chloride

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图 2 氯化胆碱/草酸¹H-NMR谱图

Figure 2 ¹H-NMR of choline chloride/oxalic acids

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图 3 温度对氯化胆碱/草酸黏度的影响

Figure 3 Effect of temperature on viscosity of choline chloride/oxalic acid

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图 4 氯化胆碱/草酸在不同萃取时间下对喹啉和吲哚的脱除效率

Figure 4 Quinoline and indole removal efficiency with choline chloride/oxalic acid at different extraction time

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图 5 氯化胆碱/草酸低共熔离子液体脱碱性氮的基本原理示意图

Figure 5 Mechanism of extraction denitrogenation with EIL choline chloride/oxalic acid

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图 6 氯化胆碱/草酸在不同萃取时间下的碱氮和总氮脱除率

Figure 6 Basic and total N-removal efficiency at different extraction time with choline chloride/oxalic acid

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图 7 不同萃取温度对碱氮和总氮脱除率的影响

Figure 7 Effect of different extraction temperatures on basic and total N-removal efficiency

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图 8 8不同剂油质量比对碱氮和总氮脱除率的影响

Figure 8 Effect of different EIL/oil mass ratios on basic and total N-removal efficiency

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图 9 离子液体循环使用次数对碱氮脱除率的影响

Figure 9 Effect of recycle times on basic N-removal efficiency

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表 1 抚顺石化公司焦化柴油的基本性质

Table 1 Properties of coker diesel oil from Fushun petrochemical company

Density ρ₂₀_℃ / (g·mL^-1)	Sulfur w/ (μg·g^-1)	Basic nitrogen w/ (μg·g^-1)	Total nitrogen w/ (μg·g^-1)	ν₂₀_℃ / (mm²·s^-1)
0.8280	896	580	1108	5.16

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