油浆高温快速裂解过程的气固相产物研究

徐斌; 高瑞; 代正华; 刘海峰; 王辅臣

油浆高温快速裂解过程的气固相产物研究

徐斌^{1, 2},
高瑞^{1, 2},
代正华^{1, 2, ,},
刘海峰^{1, 2},
王辅臣^{1, 2}

1.
华东理工大学资源与环境工程学院, 上海 200237
2.
上海市煤气化工程技术研究中心, 上海 200237

基金项目:

国家重点研发计划 2018YFB0605000

国家自然科学基金 21776087

上海市优秀技术带头人计划 19XD1434800

详细信息

通讯作者:
DAI Zheng-hua, E-mail: chinadai@ecust.edu.cn

中图分类号: TE622
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- 文章访问数: 81
- HTML全文浏览量: 36
- PDF下载量: 12
- 被引次数: 0
出版历程
- 收稿日期: 2019-06-10
- 修回日期: 2019-07-31
- 网络出版日期: 2021-01-23
- 刊出日期: 2019-10-10

Study on gas and solid phase products of rapid pyrolysis process of oil slurry at high temperature

XU Bin^{1, 2},
GAO Rui^{1, 2},
DAI Zheng-hua^{1, 2
, ,},
LIU Hai-feng^{1, 2},
WANG Fu-chen^{1, 2}

1.
School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China
2.
Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, China

Funds:

National Key R & D Program of China 2018YFB0605000

National Natural Science Foundation of China 21776087

Program of Shanghai Technology Research Leader 19XD1434800

摘要

摘要: 采用高频炉快速热解装置研究油浆的高温快速热解特性，考察了热解温度、氮气流量对气固相产物的组成和产率的影响。温度是影响气相产物产率的关键因素，气相产物主要为甲烷、氢气和乙烯，升高温度可提高甲烷和氢气的产率，而乙烯产率受高温下二次反应的影响在800 ℃到达最大值后逐渐降低，乙烷、丙烯产率较小且受二次反应的影响在700 ℃到达最大值后逐渐降低，温度高于800 ℃时会有少量乙炔生成且升温可提高乙炔产率。增加氮气流量可降低甲烷、氢气分压，缩短乙烯、丙烯等在高温区的停留时间，从而增加气相产物的产率。积炭产率随热解温度升高迅速增加，氮气流量的增加能够削弱二次反应从而降低积炭产率。
- 油浆 /
- 快速热解 /
- 乙烯 /
- 热解温度 /
- 氮气流量
Abstract: The characteristics of high temperature rapid pyrolysis of oil slurry were studied by using a rapid pyrolysis device of high-frequency furnace. The effects of pyrolysis temperature and nitrogen flow rate on the compositions and yields of gas and solid phase products were investigated. The results show that the temperature is the key factor to affect the yields of gas phase products. The gas phase products are mainly methane, hydrogen and ethylene. Higher temperature can increase the yields of hydrogen and methane, while the yield of ethylene is affected by the secondary reaction at high temperature and decreased gradually after reaching the maximum at 800℃. The yields of ethane and propylene are lower, and gradually decrease after reaching the maximum at 700℃ due to the secondary reaction. A small amount of acetylene is formed when the temperature is higher than 800℃ and the yield of acetylene will be increased by increasing the temperature. Meanwhile, increasing the nitrogen flow rate can reduce the partial pressure of methane and hydrogen and shorten the residence time of ethylene and propylene in the high temperature area, leading to an increase in the yield of gas phase products. The yield of carbon deposition increases rapidly with the increase of temperature, while the increase of nitrogen flow rate could weaken the secondary reaction and reduce the yield of carbon deposition.
- oil slurry /
- rapid pyrolysis /
- ethylene /
- pyrolysis temperature /
- nitrogen flow rate

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图 1 高频炉快速裂解装置示意图

Figure 1 Rapid pyrolysis device of high-frequency furnace

1: feeder; 2: top quartz cover; 3: quartz glass tube; 4: bottom quartz cover; 5: thermocouple; 6: high frequency heating coil; 7: molybdenum crucible; 8: thermocouple

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图 2 石英管中心温度分布

Figure 2 Temperature distribution curve at the center of quartz glass tube

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图 3 油浆在200和400 mL/min氮气流量下气相产物产率变化

Figure 3 Gas phase product yields of oil slurry pyrolysis at N₂ flow rate of 200 and 400 mL/min

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图 4 油浆在200和400 mL/min氮气流量下积炭产率变化

Figure 4 Carbon deposition yield of oil slurry pyrolysis at N₂ flow rate of 200 and 400 mL/min

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表 1 油浆的组成成分

Table 1 Composition of oil slurry

Sample	Composition	Ratio w/%
	saturates	22.9
Oil slurry of Shanghai petrochemical	aromatics	63.5
company	resins	11.7
	asphaltenes	1.9

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