COMMERCIAL APPLICATION OF MICRO-NANO COMPOSITE CATALYST FOR COAL-OIL CO-PROCESSING

Abstract

Abstract: The micro-nano composite catalyst for coal-oil co-processing was successfully applied in the world's first set of coal-oil co-processing unit with a capacity of 450 kt/a in Oil and Coal New Technology Development Company of Yanchang Petroleum Group Co., Ltd. in April 2021. The results of calibration showed that the vacuum residue and Weiqiang coal in Yulin were used as raw materials, under the working conditions of coal slurry content of 26.87%(w), reaction pressure of 20 MPa, reaction temperature of 466 ℃, hydrogen-to-slurry ratio of 1 500 m³/t and catalyst dosage of 0.66%(w), the unit operated smoothly, and coal conversion was 90.16% with the light oil yield of 68.51% and total oil yield (<360 ℃ fraction)of 76.86%, respectively. In addition, the contents of sulfur and nitrogen in naphtha and diesel products were lower than 10 μg/g, and all results could meet or exceed the expected targets, which demonstrated that the catalyst had excellent reaction performance.

Key words: coal-oil co-processing, micro-nano composite catalyst, slurry hydrogenation, light oil yield

References

[1] 朱豫飞.煤油共炼技术的现状与发展[J]. 洁净煤技术, 2013(4): 68-72．[J].洁净煤技术, 2013, 19(4):68-72 [2] 黄传峰，李大鹏，杨涛.煤油共炼技术现状及研究趋势讨论[J]. 现代化工, 2016(8):8-13.[J].现代化工, 2016, 36(8):8-13 [3]Watanabe Y, Yamada O, Fujita K, et al.Coal liquefaction using iron complexes as catalysts[J].Fuel, 1984, 63(6):752-755 [4]Wilson B L, Charles A, Jackson K.Soluble cobalt (II) complex as catalysts for direct coal liquefaction[J].Fuel, 1988, 67(3):437-438 [5]董志学.用油溶性催化剂加氢裂化孤岛减压渣油的研究[J].工业催化, 2003, 11(4):27-29 [6]Korda A, Larsen J W, Martin S C, et al.Nonradical reactions during coal conversionA search for synchronous 1,4-hydrogen addition as a precursor to radical reactions[J].Energy & fuels, 2000, 14(3):545-551 [7]Miyake M, Kagajyo T, Nomura M.Hydrocracking of asphaltene from coal using ZnCl2 as catalyst[J].Fuel processing technology, 1984, 9(3):293-306 [8]Nomura M, Muratani T, Tajima Y, et al.Liquefaction of Japanese bituminous Akabira coal catalyzed by molten salts under D 2 atmosphere[J].Fuel processing technology, 1995, 43(3):213-225 [9] Moll N G, Quarderer G J.Emulsion catalyst for hydrogenation process[P]. USP: 4172814, Oct., 1979. [10]Derbyshire F, Hager T.Coal liquefaction and catalysis[J].Fuel, 1994, 73(7):1087-1092 [11] 林雄超，王彩红，王永刚.煤液化催化剂研究现状[J]. 2007. [12]Brandes S D, Graff R A, Gorbaty M L, et al.Modification of coal by subcritical steam: an examination of modified Illinois No6 coal[J].Energy & fuels, 1989, 3(4):494-498 [13]蒋中山，黄传峰，李慧慧，等.多功能负载型α-催化剂在煤-油共炼中的应用[J].石油学报石油加工, 2017, 33(1):144-149 [14] Wei Li, Mingfeng Wang, Pengju Huo, et al.Hydrocracking of vacuum residue in a slurry phase reactor: effect of reaction temperature and properties of feedstock[J]. Int. J. Chem. React. Eng, 2022:2-9.[J].International Journal of Chemical Reactor Engineering, 2022, :2-9 [15]李慧慧，蒋中山，黄传峰，等.含铁废渣对煤油共炼催化作用的考察[J].现代化工, 2016, 36(6):83-86 [16] 李大鹏，蒋中山，黄传峰，等.一种煤液化催化剂及其制备方法和应用: CN 104923231 A. [P]. 2015. [17] 韩信有，李大鹏，蒋中山，等.一种多功能悬浮床高效催化剂的制备及应用: ZL 201811543935.9 [P].2018. [18] 颜丙峰，毛学峰，黄传峰，等.国家市场监督管理总局中国国家标准化管理委员会. 煤油共炼原料技术条件: GB/T 35064-2018 [S]. 2018.