延迟焦化工艺弹丸焦生成的实验研究

郭爱军; 林祥钦; 王圆圆; 王宗贤

延迟焦化工艺弹丸焦生成的实验研究

1.
中国石油大学(华东) 重质油国家重点实验室, 山东青岛 266555;
2.
山东海成石化工程设计有限公司, 山东淄博 255400

基金项目: 山东省自然科学基金(ZR2010BM008); 中国石油天然气股份有限公司资助(W2008E-1503/02); 中央高校基本科研业务费专项资金资助(09CX04055A)。

详细信息

通讯作者:
郭爱军,Tel: 0532-86984615, Fax: 0532-86981787, E-mail: ajguo@upc.edu.cn; 王宗贤,Tel: 0532-86981851, E-mail: zxwang@upc.edu.cn.

中图分类号: TE624.3⁺2;TQ517.2
计量
- 文章访问数: 2373
- HTML全文浏览量: 14
- PDF下载量: 588
- 被引次数: 0
出版历程
- 收稿日期: 2011-10-26
- 修回日期: 2011-12-29
- 刊出日期: 2012-08-31

Experimental study on shot coke formation in delayed coking process

1.
State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao 266555, China;
2.
Shandong Haicheng Petrochemical Engineering Design Limited Company, Zibo 255400, China

摘要

摘要: 以光学结构分析为主要表征手段,在小型焦化装置上,研究了弹丸焦的生成历程,以及原料性质、焦化工艺操作条件对弹丸焦生成的影响,分析了其原因,在此基础上提出了相应的抑制措施。结果表明,弹丸焦成焦历程为:原料→不稳定中间相小球体→镶嵌型中间相→弹丸焦;沥青质残炭之比大于0.5、氢碳原子比小于1.5、胶体稳定性参数小于3.5的焦化原料易生成弹丸焦;不同循环馏分对弹丸焦的抑制效果不同,以焦化重蜡油(420~500℃)的抑制作用最大;通过采取降低反应温度、升高反应压力、增大循环比以及向反应体系中添加一定量四氢萘或催化油浆等措施,可以抑制弹丸焦的生成。
- 弹丸焦 /
- 原料性质 /
- 操作条件 /
- 添加物 /
- 光学结构
Abstract: Using optical structure analysis as the main characterization methods, the course of shot coke formation and the effects of feedstock properties and operating conditions were investigated in a small scale experiment equipment. After analysis of reasons for shot coke formation, the corresponding suppression measures were suggested. The results show that the course of shot coke formation can be expressed as feedstock → unstable spheres of mesophase → mosaic mesophase → shot coke. When the ratio of asphaltene to carbon residue is higher than 0.5, the atomic ratio of H/C is below 1.5 and the colloidal stability parameter is less than 3.5, the shot coke is easily formed. Various circulation fractions play different roles in inhibition of shot coke formation. When using heavy coker gas oil (HCGO) (420~500℃) as circulating fraction the best effect is obtained. The shot coke formation can be inhibited by optimizing process parameters like adoption of lower temperature, higher pressure, higher recycle ratio and adding tetrahydronaphthalene or fluid catalytic cracking (FCC) slurry to the reaction system.
- shot coke /
- feedstock property /
- operating conditions /
- additives /
- optical structure

HTML全文

参考文献(21)

瞿国华, 黄大智, 梁文杰. 延迟焦化在我国石油加工中的地位和前景[J]. 石油学报(石油加工), 2005, 21(3): 49-53. (QU Guo-hua, HUANG Da-zhi, LIANG Wen-jie.Role and prospects of delayed coking in China's petroleum processing[J].Acta Petrolei Sinica(Petroleum Processing Section), 2005, 21(3): 49-53.)

侯芙生. 发挥延迟焦化在深度加工中的重要作用[J]. 当代石油石化, 2006, 14(2): 3-7. (HOU Fu-sheng.Giving full play to important role of delayed coking in deeper processing[J].Petroleum and Petrochemical Today, 2006, 14(2): 3-7.)

张德义. 提高延迟焦化装置技术水平进一步发挥其在重油加工中的作用[J]. 炼油技术与工程, 2005, 35(12): 1-6. (ZHANG De-yi.Heightening technology level of delayed coking unit and further developing its role in residue processing[J].Petroleum Refinery Engineering, 2005, 35(12): 1-6.)

张成, 束长好. 延迟焦化工艺弹丸焦形成原因和对策[J]. 石油炼制与化工, 2009, 40(12): 8-11. (ZHANG Cheng, SHU Chang-hao.Causes of shot coke formation in delayed coking unit and countermeasures[J].Petroleum Processing and Petrochemicals, 2009, 40(12): 8-11.)

从新兴, 肖知俊, 牛文俊. 北疆稠油的延迟焦化轻质化加工[J]. 炼油技术与工程, 2006, 36(8): 15-17. (CONG Xin-xing, XIAO Zhi-jun, NIU Wen-jun.Upgrading Xinjiang Beijiang heavy crude oil by delayed coking[J].Petroleum Refinery Engineering, 2006, 36(8): 15-17.)

王敬波. 掺炼丙脱沥青对焦化装置安全运行及产品的影响[J]. 炼油技术与工程, 2005, 35(8): 15-17. (WANG Jing-bo.Influence of processing propane deasphalted asphalt on safety operation and product of coking unit[J].Petroleum Refinery Engineering, 2005, 35(8): 15-17.)

杨长文. 辽河超稠原油不产生弹丸焦工艺条件探索[J]. 炼油技术与工程, 2009, 39(3): 30. (YANG Chang-wen.Study on operations conditions for producing no shot coke in extra-viscous crude oil delayed coking unit[J].Petroleum Refinery Engineering, 2009, 39(3): 30.)

姜伟, 郑宗孝. 延迟焦化弹丸焦生成的原因及对策[J]. 炼油技术与工程, 2008, 38(1): 16-18. (JIANG Wei, ZHENG Zong-xiao.Causes of shot coke formation and countermeasures[J].Petroleum Refinery Engineering, 2008, 38(1): 16-18.)

张峰, 陈春茂, 余昌信, 吴亮, 叶明. 超稠原油延迟焦化产生弹丸焦的原因及对策[J]. 炼油技术与工程, 2006, 36(12): 11-13. (ZHANG Feng, CHEN Chun-mao, YU Chang-xin, WU Liang, YE Ming.Avoiding shot coke in extra-heavy crude delayed coking unit[J].Petroleum Refinery Engineering, 2006, 36(12): 11-13.)

张龙力, 杨国华, 孙在春, 王宗贤, 阙国和. 质量分率电导率法研究几种不同渣油的胶体稳定性[J]. 燃料化学学报, 2003, 31(2): 115-118. (ZHANG Long-li, YANG Guo-hua, SUN Zai-chun, WANG Zong-xian, QUE Guo-he.Study of the colloidal stability of residues through mass fraction normalized conductivity[J].Journal of Fuel Chemistry and Technology, 2003, 31(2): 115-118.)

MARSH H, CALVERT C.Structure and formation of shot coke-a microscopy study[J].J Mater Sci, 1985, 20(1): 289-302.

MICHAEL S.Delayed coking process for producing anisotropic free-flowing shot coke: US, 2003/0102250A1.2003-07-05.

SISKIN M, KELEMEN S R, GORBATY M L, FERRUGHELLI D T, BROWN L D, EPPIG C P, KENNEDY R J.Chemical approach to control morphology of coke produced in delayed coking[J].Energy Fuels, 2006, 20(5): 2123-2124.

张龙力, 杨国华, 张庆轩, 杨普江, 阙国和. 渣油胶体稳定性与热反应生焦性能的关系[J]. 石油化工高等学校学报, 2005, 18(1): 4-6. (ZHANG Long-li, YANG Guo-hua, ZHANG Qing-xuan, YANG Pu-jiang, QUE Guo-he.The relationship between the colloidal stability and thermal reaction characteristics of residues[J].Journal of Petrochemical Universities, 2005, 18(1): 4-6.)

MARCH H.Introduction to carbon science[M].London: Butter-Worth, 1989: 58.

张怀平. 针状焦形成机理及炭化条件[J]. 炭素技术, 2004, 23(6): 29-30. (ZHANG Huai-ping.Formation mechanism of needle coke from heavy aromatic hydrocarbon[J].Carbon Techniques, 2004, 23(6): 29-30.)

张怀平, 吕春祥, 李开喜, 刘春林, 凌立成. 氧化沥青化学结构及成焦行为的研究[J]. 新型炭材料, 2001, 16(2): 51-53. (ZHANG Huai-ping, LV Chun-xiang, LI Kai-xi, LIU Chun-lin, LING Li-cheng.Chemical structure and carbonization behaviours of air-blown pitches [J].New Carbon Materials, 2001, 16(2): 51-53.)

王宗贤, 耿亚平, 郭爱军, 田凌燕. 馏分循环对延迟焦化加热炉管结焦规律影响的实验研究[J]. 石油炼制与化工, 2010, 41(9): 67-68. (WANG Zong-xian, GENG Ya-ping, GUO Ai-jun, TIAN Ling-yan.Experimental study on the effect of fractions circulation on the coking of furnace tube in delayed coking unit[J].Petroleum Processing and Petrochemicals, 2010, 41(9): 67-68.)

郭爱军, 王宗贤, 阙国和. 饱和烃促进渣油热反应初期生焦的考察[J]. 燃料化学学报, 2001, 29(5): 406-407. (GUO Ai-jun, WANG Zong-xian, QUE Guo-he.Promoting effect of saturate hydrocarbons in initial coke formation from petroleum residua under thermal cracking[J].Journal of Fuel Chemistry and Technology, 2001, 29(5): 406-407.)

张会成, 邓文安, 阙国和. 胜利渣油在供氢剂和溶剂下的热裂化特性研究[J]. 石油学报(石油加工), 1997, 13(2): 18-22. (ZHANG Hui-cheng, DENG Wen-an, QUE Guo-he.Study on thermal reaction characteristics of Shengli vacuum residue with hydrogen donor and solvent[J].Acta Petrolei Sinica(Petroleum Processing Section), 1997, 13(2): 18-22.)

王宗贤, 何岩, 郭爱军, 张宏玉, 阙国和. 辽河和孤岛渣油供氢能力与生焦趋势[J]. 燃料化学学报, 1999, 27(3): 251-252. (WANG Zong-xian, HE Yan, GUO Ai-jun, ZHANG Hong-yu, QUE Guo-he.Study on hydrogen-donating ability of vacuum residues and their sub-fractions[J].Journal of Fuel Chemistry and Technology, 1999, 27(3): 251-252.)

施引文献

资源附件(0)

访问统计