Inorganic Chemicals Industry >
Industrial application of THFS-2 sulfurized reforming prehydrogenation catalysts
Received date: 2023-12-08
Online published: 2024-05-15
According to the demand on hydrogenation of the high nitrogen and naphthenic base of traight naphtha for reforming raw materials，THFS-2 sulfurized reforming pre-hydrogenation catalyst was developed through the independently developed in-situ activation technique.The catalysts were characterized by BET，H2-TPR，XRD，NH3-TPD，Py-FTIR and TEM techniques.The results showed that compared to the THFS-1 hydrogenation catalyst，the addition of organic phosphorus assistant optimized the pore structure of the catalyst，increased the distributions of medium strong acid and B acid，improved the metal sulfide and atomic utilization rate，and formd more active “NiMoS-Ⅱ” phases.THFS-2 catalyst achieved industrial application on 800 000 t/a reforming pre-hydrogenation unit of CNOOC Huizhou Petrochemical Co.，Ltd.The activation process was more efficient and environmentally friendly，the activation time was reduced to 18 h，and the highest hydrogen sulfide content in recycle hydrogen was less than 2 000 μg/g.Under the full load conditions of reaction inlet temperature of 289 ℃，hydrogen partial pressure of 2.4 MPa，the GHSV of 5.0 h-1，and hydrogen-oil ratio of 130 Nm3/m3，the sulfur and nitrogen contents in hydrogenated naphtha were less than 0.5 μg/g，the bromine index was less than 100 mg/100 g，the arsenic content was less than 1.0 µg/kg，and the chlorine content was less than 0.5 µg/g.The result of industrial operation showed that THFS-2 sulfurized reforming prehydrogenation catalyst had excellent performance.It could meet the hydrogenation activity of the high nitrogen straight-run naphtha under the condition of high GHSV，and provided qualified raw materials for reforming plant.
WANG Chao , SONG Guoliang , XIAO Han . Industrial application of THFS-2 sulfurized reforming prehydrogenation catalysts[J]. Inorganic Chemicals Industry, 2024 , 56(5) : 94 -100 . DOI: 10.19964/j.issn.1006-4990.2023-0593
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