改性石油沥青和煤沥青共炭化对焦形成的影响

董亚威; 邢国政; 靳利娥; 李平; 曹青

doi:10.1016/S1872-5805(19)60015-6

改性石油沥青和煤沥青共炭化对焦形成的影响

doi: 10.1016/S1872-5805(19)60015-6

太原理工大学化学化工学院, 山西太原 030024

基金项目: 国家自然科学基金（51174144）；山西省重点基金（201703D121037-1）.

详细信息

作者简介:
董亚威,硕士研究生.E-mail:dongyaweiwfu@163.com

通讯作者:
曹青,博士,教授.E-mail:qcao2000@163.com

中图分类号: TQ127.1⁺1
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- 文章访问数: 550
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- 被引次数: 0
出版历程
- 收稿日期: 2019-02-01
- 录用日期: 2019-06-27
- 修回日期: 2019-05-30
- 刊出日期: 2019-06-28

Co-carbonization of brominated petroleum pitch, coal tar pitch and benzoyl chloride to prepare cokes

College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Funds: National Natural Science Foundation of China (51174144); Shanxi Province Key Fund(201703D121037-1).

摘要

摘要: 研究了不同比例溴化石油沥青（Brominated petroleum pitch，BPP）和精制煤沥青（Refined coal tar pitch，RCTP）在苯甲酰氯存在下得到的沥青（Synthetic pitch，SP）性质以及共炭化对焦结构有序性产生的影响。利用红外光谱仪、氢核磁共振仪、热重仪和黏度仪对SP性质和炭化行为进行分析表征。所得半焦和焦的光学组织分别通过偏光显微镜、X射线衍射仪和扫描电子显微镜进行了观察。结果表明，由10 wt%溴化BPP （6 h）得到的沥青（Typical synthesized pitch，TP）炭化产率可达50.1 wt%；与未溴化石油沥青相比，BPP与RCTP共炭化产生的半焦，其有序性得到了提高，晶格参数d₀₀₂和L_c得到改善。说明石油沥青中溴的引入增加了同RCTP的反应活性，有利于改善焦的结构。
- 煤沥青 /
- 石油沥青 /
- 溴化 /
- 共炭化 /
- 焦
Abstract: After the quinoline insoluble fraction was removed, petroleum pitch (PP) was brominated under ultraviolet light irradiation for 3 to 9 h with a bromine to PP mass ratio of 1:20 to prepare brominated PPs (BPPs). Synthetic pitches (SPs) were produced from these BPPs by mixing them with refined coal tar pitch (RCTP) using a solvent (5 wt% benzoyl chloride)-assisted mixing method, using different mass ratios of BPP/RCTP, and BPPs with different irradiation times. The SPs were carbonized to prepare semicokes. The properties and carbonization behavior of the SPs were investigated by FT-IR spectrometry, ¹H NMR, thermogravimetry and viscometry, and the optical texture of the semicokes was examined by polarized-light microscopy, X-ray diffraction and scanning electron microscopy. Results indicate that converting PP into BPPs increases its reactivity with RCTP, which is beneficial for developing an ordered texture during carbonization. A high-quality coke with a highest yield of 50.1 wt% was prepared from the optimum SP made from BPP brominated for 6 h and a mass ratio of BPP to RCTP of 1:9.
- Coal tar pitch /
- Petroleum pitch /
- Bromination /
- Co-carbonization /
- Coke

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