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减压渣油与低阶烟煤悬浮床中试研究
Pilot study on vacuum residual oil and low-rank bituminous coal suspended bed
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- DOI:
- 作者:
- 郭彦新，高 伟，毛吉会，李 琦，问王伟
Guo Yanxin，Gao Wei，Mao Jihui，Li Qi，Wen Wangwei
- 作者单位:
- 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 西安 710075
Shaanxi Yanchang Petroleum （Group） Company with limited liability Hydrocarbon High-efficiency Utilization Technology Research Center，Xi'an 710075，China
- 关键词:
- 悬浮床；加氢裂化；煤油共炼；减压渣油；氢气
Suspension bed；Hydrocracking；Kerosene co-refining；Vacuum residue；hydrogen
- 摘要:
- 摘要：70%减压渣油与30%低阶烟煤均匀混合成浆，再加入总量1%的催化剂，利用陕西延长石油集团开发的 150 kg/d悬浮床加氢裂化技术进行试验研究，反应压力 20 MPa，空速 0.5 h-1 ，氢油比2 000 L/h，催化剂1%考察反应温度在456 ℃、468 ℃、470 ℃在同1种催化剂下煤油共炼反应性能及产物分布的影响和装置的稳定性，利用煤油共炼的协同效应，使富含芳烃的煤与减压渣油共炼时提高氢的利用率，降低氢耗和能耗，提高产品收率。结果表明，试验中煤的转化率高达91.09%，气体C1~C4收率11.19%，液体收率79.63%。在转化率方面，随反应温度从465 ℃升至 468 ℃再增至 470 ℃的过程中，随反应温度的升高，煤转化率总体呈增长趋势，468 ℃至470 ℃气体烃类收率增加而液体收率降低，要获得高液收，反应温度468 ℃较合适。Abstract：70% vacuum residual oil and 30% low-rank bituminous coal were mixed uniformly form slurry,then add 1% catalyst tothe total slurry amount. The 150 kg/d suspended bed hydrocracking technology developed by Shaanxi Yanchang Petroleum Groupwas used for experimental research. The reaction pressure was 20 MPa, the space velocity was 0.5 h-1 , the hydrogen-to-oil ratio was2 000 L / h, and the reaction temperature of 1% catalyst was 456 ℃ and 468 ℃ . The effect of kerosene co-smelting reactionperformance and product distribution under the same catalyst at 470 ℃ and the stability of the device, the synergistic effect ofkerosene co-smelting is used to react aromatic-rich coal with hydrogen pyrolysis from vacuum residue to improve mass and heattransfer efficiency. The results show that: The conversion rate of coal is as high as 91.09%, the yield of gas C1~C4 is 11.19%, and theyield of liquid is 79.63%. In terms of conversion rate, as the reaction temperature increased from 465 ℃ to 468 ℃ and then to470 ℃, the coal conversion rate showed an overall trend of increasing with the increase of reaction temperature. From 468 ℃ to470 ℃ , the gas hydrocarbon yield increased while the liquid yield decreased. In order to obtain high liquid yield, the reactiontemperature of 468 ℃ was more appropriate.