煤焦油制蜡技术的研究

›› 2018, Vol. 49 ›› Issue (12): 58-63.

煤焦油制蜡技术的研究

周秋成

榆林煤化工产业促进中心

收稿日期:2018-04-26 修回日期:2018-07-06 出版日期:2018-12-12 发布日期:2019-01-03
通讯作者: 周秋成 E-mail:491680613@qq.com
基金资助:
陕西省重点研发计划项目

TECHNOLOGY FOR WAXMAKING FROM COAL TAR

Received:2018-04-26 Revised:2018-07-06 Online:2018-12-12 Published:2019-01-03

摘要/Abstract

摘要： 以中低温煤焦油轻油为原料，采用直接加氢-溶剂脱蜡耦合工艺制备煤基蜡；在三管式固定床加氢反应器，考察反应温度、反应压力及空速对煤焦油直接加氢产物性质及正构烷烃含量的影响；采用溶剂脱蜡技术得到煤基蜡产品，并对其熔点、正构烷烃组分含量进行测定。结果表明：煤焦油直接加氢-溶剂脱蜡耦合工艺的最优条件为反应温度380 ℃，反应压力13 MPa，液体体积空速0.3 h-1，酮苯质量比8:1，剂油质量比5:1；在最优条件下制备的煤基蜡熔点为50.7 ℃，正构烷烃质量分数为93.7%。

关键词: 煤焦油, 加氢, 石蜡, 正构烷烃

Abstract: The light oil from middle and low temperature coal tar was used to make wax by hydrofining and then solvent dewaxing process. The effect of reaction temperature，pressure，LHSV on the properties and content of paraffin of the waxes were investigated using three hydrofining reactors in series. The melting point and content of n-alkanes of the waxes obtained by solvent dewaxing process were determined. The optimal reaction conditions of the process are as follows：reaction temperature of 380 ℃，reaction pressure 13 MPa，LHSV 0.3 h-1, the ratio of ketone-benzene and solvent-oil is 8:1 and 5:1，respectively. The final wax product has a melting point of 50.7℃，n-alkane content of 93.7%.

Key words: coal tar, hydrofining, wax, n-alkane

周秋成. 煤焦油制蜡技术的研究[J]. , 2018, 49(12): 58-63.

参考文献

[1] 尚建选，马宝岐，张秋民等.低阶煤分质转化多联产技术[M]. 煤炭工业出版社: 北京, 2013. [2] 白建明，李冬，李稳宏.煤焦油深加工技术[M]. 化学工业出版社: 北京, 2016. [3] DONG L，WENGANG C，XIANGPING Z，et.al. Production of Clean Fuels by Catalytic Hydrotreating a Low Temperature Caol Tar Distillate in a pilot-Scale Reactor [J]. Energy Fuel，2017，31:11495-11508. [4]LI D，LI Z，LI W H，et al.Hydrotreating of low temperature coal tar to produce clean liquid fuels [J][J].J Anal Appl Pyrolysis, 2013, 100(6):245-252 [5]KAN T，WANG H Y，HE H X，et al.Experimental study on two-stage catalytic hydroprocessing of middle-temperature coal tar to clean liquid fuels [J][J].Fuel, 2011, 90(11):3404-3409 [6]李冬，李稳宏，高新，等.中低温煤焦油加氢改质工艺研究[J].煤炭转化, 2009, 32(4):81-84 [7]JIAO T T，LI C S，ZHUANG X L，et al.The New Liquid-Liquid Extraction Method for Separation of Phenolic Compounds from Coal Tar[J].Chem. Eng. J., 2015, 266(4):148-155 [8] 肖瑞华.煤焦油化工学[M]. 冶金工业出版社: 北京, 2009. [9]KOUICHI MIURA.Mild Conversion of coal for producing valuable chemicals[J].Fuel Processing Technology, 2000, 62(2):119-135 [10] 马宝岐，任沛建，杨占彪等.煤焦油制燃料油品[M]. 化学工业出版社: 北京, 2011. [11] 张相平，周秋成，马宝岐.榆林煤化工产业高端化发展路径研究[J].煤炭加工与综合利用，2017（2）：21-24, 38. [12] 杨占彪，王树宽.一种煤焦油生产低凝柴油和液体石蜡的方法：CN103450937A [P].2013-12-18. [13] NIU M，SUN X，GAO R，et al.Effect of dephenolization on low temperature coal tar hydrogenation to produce fuel oil [J] .Energy Fuels，2016，30:10215. [14] SUN R J，SHEN S G，ZHANG D F，et al.Hydrofining of Coal Tar Light Oil to Produce High Octane Gasoline Blending Components over Gamma-Al2O3-and eta- Al2O3-Supported Catalysts. [J] .Energy Fuels，2015，29（11）, 7005-7013. [15]李传，邓文安，李向伟，等.重油加氢催化剂用于中低温煤焦油加氢改制的中试研究[J].炼油技术与工程, 2011, 41(9):32-35 [16]夏良燕，夏芝香，方梦祥，等.煤焦油中芳烃萘的加氢饱和试验[J].浙江大学学报工学版, 2015, 49(3):578-584 [17] 郑立辉，盛奎龙，潘金亮.石油蜡的生产及深加工[M]. 化学工业出版社: 北京, 2008.