THFS-2硫化型重整预加氢催化剂的工业应用

doi:10.19964/j.issn.1006-4990.2023-0593

Abstract

Abstract:

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.

Key words: sulfurization, reforming prehydrogenation, catalysts, industrial applications

CLC Number:

O643.3

WANG Chao, SONG Guoliang, XIAO Han. Industrial application of THFS-2 sulfurized reforming prehydrogenation catalysts[J]. Inorganic Chemicals Industry, 2024, 56(5): 94-100.

Figures/Tables 15

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催化剂	B酸酸量/（mmol·g^-1）	L酸酸量/（mmol·g^-1）	总酸量/（mmol·g^-1）	B/L
THFS-1	0.014	0.122	0.136	0.115
THFS-2	0.017	0.128	0.145	0.133

项目		密度（20 ℃）/ （kg·m^-3）	硫含量/ （μg·g^-1）	氮含量/ （μg·g^-1）	砷含量/（µg·kg^-1）	氯含量/ （µg·g^-1）	溴指数/ （mg/ 100 g）
石脑油原料	技术指标	≤740	≤800	≤10	≤50	≤5.0	≤1 000
石脑油原料	实际值	725	210	8.5	31	3.2	990
加氢石脑油	技术指标	≤740	≤0.5	≤0.5	≤1.0	≤0.5	≤100
加氢石脑油	实际值	738.6	0.1	0.2	<1.0	<0.5	44.2

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Industrial application of THFS-2 sulfurized reforming prehydrogenation catalysts

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