[1]高艳a,杜新胜b,王福善a,等.NaH脱除废塑料热解油中的有机氯[J].石化技术与应用,2025,2:111-114.
GAO Yana,DU Xin-shengb,WANG Fu-shana,et al.Removal of organochlorines from waste plastic pyrolysis oil by sodium hydride[J].Petrochemical technology & application,2025,2:111-114.
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《石化技术与应用》[ISSN:1009-0046/CN:62-1138/TQ]
- 期数:
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2025年2期
- 页码:
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111-114
- 栏目:
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- 出版日期:
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2025-03-10
文章信息/Info
- Title:
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Removal of organochlorines from waste plastic pyrolysis oil by sodium hydride
- 文章编号:
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1009-0045(2025)02-0111-04
- 作者:
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高艳1a; 杜新胜1b; 王福善1a; 陈秀娣1b; 张子南2; 杨聪2; 龙雨2*
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(1.中国石油兰州石化公司 a.科创中心,b.研究院,甘肃 兰州 730060;2.兰州大学 化学化工学院,甘肃 兰州 730000)
- Author(s):
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GAO Yan1a; DU Xin-sheng1b; WANG Fu-shan1a; CHEN Xiu-di1b ; ZHANG Zi-nan2; YANG Cong2; LONG Yu2
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(1.a. Science and Technology Innovation Center, b. Research Institute, Lanzhou Petrochemical Company, PetroChina, Lanzhou 730060, China; 2. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China)
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- 关键词:
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NaH; 废塑料热解油; 有机氯; 亲核取代; 脱氯
- Keywords:
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sodium hydride; waste plastic pyrolysis oil; organochlorine; nucleophilic substitution; dechlorination
- 分类号:
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TQ 320.6;X 705
- DOI:
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DOI:10.19909/j.cnki.ISSN1009-0045.2025.02.0111
- 文献标识码:
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B
- 摘要:
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以NaH为脱氯剂,通过亲核取代反应脱除废塑料热解油中的有机氯,考察了投加量、反应温度、反应时间以及初始含氯量对脱氯效果的影响,并对不同有机氯的检测方法进行了对比。结果表明:在n(NaH)∶n(Cl)为2,反应温度为80 ℃,反应时间为6 h的条件下,废塑料热解油含氯量可由499.9 μg/g降至34.9 μg/g,脱氯率高达93%;废塑料热解油初始含氯量为100~2 000 μg/g时,NaH均能将其含氯量降至50 μg/g以下,脱氯率在93%及以上;NaH在脱除废塑料热解油中有机氯的过程中不会破坏其他成分;通过差量法测定脱除后含氯量结果与燃烧-微库仑仪直接测定结果相近,相对误差小于10%。
- Abstract:
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Using NaH as a dechlorination agent, organochlorine in waste plastic pyrolysis oil was removed through nucleophilic substitution reaction. The effects of dosage, reaction temperature, reaction time, and initial chloriocontent on dechlorination efficiency were investigated, and different detection methods for organicchlorine were compared. The results showed that under the conditions of n (NaH)∶ n (Cl) ratio of 2, reaction temperature of 80 ℃, and reaction time of 6 h, the chlorine content in the pyrolysis oil of waste plastics could be reduced from 499.9 μg/g to 34.9 μg/g, and the dechlorination rate could reach as high as 93%. When the initial chlorine content of waste plastic pyrolysis oil was 100-2 000 μg/g, NaH could reduce its chlorine content to below 50 μg/g, and achieving a dechlorination efficiency of 93%; NaH did not damage other components during the process of removing organic chlorine from pyrolysis oil of waste plastics. The results of determining the chlorine content after removal by differential method was similar to those directly measured by combustion microcoulometer, with a relative error of less than 10%.
参考文献/References
[1] 全淑苗,张彦军,宋小飞,等.废塑料脱氯技术现状及产业化进展[J].中国塑料,2022,36(9):122-130.[2] 裴亚宁,张登前,唐家璇,等.油品中有机氯脱除技术研究进展及发展趋势分析[J].石油化工,2023,52(9):1306-1313.[3] 刘宗俨,易天立.溶剂法溶解废塑料处理技术及其炼化一体化工艺[J].石化技术与应用,2022,40(4):290-294.[4] 翟永怡,李瑞丽,卜禹豪,等.Mg掺杂UiO-66的制备及其塑料油品脱氯性能[J].中国塑料,2023,37(2):62-70.[5] Yang J R, Qi X H, Shen F, et al. Complete dechlorination of lindane over N-doped porous carbon supported Pd catalyst at room temperature and atmospheric pressure[J]. Science of The Total Environment, 2020(719):137534.[6] Mu Y, Zhan G G, Huang C M, et al. Dechlorination-hydroxylation of atrazine to hydroxyatrazine with thiosulfate:A detoxification strategy in seconds[J]. Environmental Science & Technology, 2019,53(6):3208-3216.[7] Chen J Q,Zhao X J,Zou Y. Preparation of novel dechlorination adsorbent and study on its adsorption mechanism[J]. China Petroleum Processing & Petrochemical Technology,2017,19(4):20-26. [8] Zhang N N, Li R L, Zhang G, et al. Zn-modified Hβ zeolites used in the adsorptive removal of organic chloride from model naphtha[J]. ACS Omega,2020,5(21):11987-11997.[9] Lu H, Zhang T T, Zhou Y, et al. Enhanced dechlorination and biodegradation of 2-chloroaniline by a 2-aminoanthraquinone-graphene oxide composite under anaerobic conditions[J]. Scientific Reports, 2019,9(1):12376.[10] 姬娅茹,李瑞丽,翟永怡,等.MOF-808改性材料吸附脱除塑料油品中的有机氯化物[J].中国塑料,2024,38(6):82-89.[11] Gogotova A F, Silinskaya Y N, Kolotov V Y, et al. Influence of various additives on base hydrolysis of chlorine-containing organic impurities in naphtha fractions[J]. Russian Journal of Applied Chemistry, 2004,77(11):1902-1903.[12] 张清翔,裴亚宁,张登前,等.溶剂萃取-亲核反应脱除塑料热解油中有机氯[J].石油化工,2024,53(4):511-517.
备注/Memo
- 备注/Memo:
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兰州市科学技术局资助项目(项目编号:2023-1-5)
更新日期/Last Update:
2025-03-10