炼油技术与工程 ›› 2021, Vol. 51 ›› Issue (9): 7-10.

• 加工工艺 • 上一篇    下一篇

450 kt/a油煤共炼装置残渣组分鉴定及其热解性能*

张生娟, 杨涛**, 康徐伟, 姬鹏军, 杨猛, 赵静, 杜宁   

  1. 陕西延长石油(集团)有限责任公司碳氢高效利用技术研究中心,陕西省西安市 710065
  • 收稿日期:2021-04-06 发布日期:2021-11-12
  • 通讯作者: **杨涛,工程师,硕士研究生,主要研究方向为纳米催化材料设计与制备、重烃绿色转化、废矿物油资源化利用及微气泡强化传质技术。联系电话:18609287963,E-mail:tonyoung11@163.com。
  • 作者简介:张生娟,工程师,硕士研究生,2015年毕业于中国矿业大学(北京)化学工艺专业,主要研究方向为煤基油品加工利用、烃类组分定向分离及多相混合组分分析鉴定方法开发。联系电话:15229107611,E-mail:zhangshengjuan1116@163.com。
  • 基金资助:
    *国家重点研发计划项目(2018YFB06046),煤化工产业链新材料及产品检测平台(2021PT-002)。

Composition identification and pyrolysis performance of residue from 450,000 TPY oil-coal co-processing unit

Zhang Shengjuan, Yang Tao, Kang Xuwei, Ji Pengjun, Yang Meng, Zhao Jing, Du Ning   

  1. Yanchang Petroleum Hydrocarbon High-efficiency Utilization Technology Research Center, Xi’an, Shaanxi 710065
  • Received:2021-04-06 Published:2021-11-12

PDF

摘要： 在对某450 kt/a油煤共炼装置残渣基本性质分析的基础上,采用溶剂抽提法将残渣分离为正庚烷可溶物(HS)、正庚烷不溶物-甲苯可溶物(HI-TS)及甲苯不溶物(TI)3个组分,采用红外光谱、X射线衍射等方法对各组分进行了分析,对不同残渣掺混比例下残渣与煤热解性能进行了探索。结果表明,与原料煤相比,油煤共炼残渣具有高灰分、高碳、高硫、少水等特点,残渣中HS,HI-TS及TI的质量分数分别为30.64%,22.61%,44.19%;HS的饱和烃含量较高,HI-TS的芳香结构较多,TI以芳构化程度较高的焦炭、未转化的煤、催化剂及添加剂为主;残渣与煤进行共热解时表现出一定的协同效应,适宜的残渣掺混比例为30%,此时焦油、半焦、热解水及热解气的产率分别为13.34%,74.02%,4.05%,8.59%。

关键词: 油煤共炼, 残渣, 分离, 热解, 傅里叶变换红外光谱, X射线衍射

Abstract: On the basis of the properties analysis of residue from a 450,000 TPY oil-coal co-processing unit,the residue was separated by solvent extraction into three components: n-heptane soluble(HS),n-heptane insoluble-toluene soluble(HI-TS)and toluene insoluble (TI). The properties of each component were analyzed by infrared spectroscopy and X-ray diffraction,and the pyrolysis performances of residue and coal with different blending rate of residue were studied. Compared with the feed coal, the residue from oil-coal co-processing unit had the characteristics of high ash, high carbon content, high sulfur content and low water content. The contents of HS,HI-TS and TI in the residue were 30.64%,22.61% and 44.19%,respectively. The content of saturated hydrocarbons in the HS was higher, the aromatic structures of the HI-TS were more, and the TI was mainly composed of coke with higher aromatization, unconverted coal, catalysts and additives. There was a certain synergistic effect in the co-pyrolysis of residue and coal. The appropriate blending ratio of the residue was 30%, and under this condition, the yields of tar, semi-coke, pyrolysis water and pyrolysis gas were 13.34%, 74.02%, 4.05% and 8.59%, respectively.    

Key words: oil-coal co-processing, residue, separation, pyrolysis, FT-IR, XRD