悬浮物制备高活性催化裂化基质材料及其催化性能研究

doi:10.19964/j.issn.1006-4990.2024-0254

Abstract

Abstract:

In order to develop low-cost and highly active matrix materials in the field of catalytic cracking to improve the reaction performance of catalysts，the suspended solids generated in the in-situ crystallization catalytic cracking catalysts process are studied.XRD，SEM，NH₃-TPD，nitrogen adsorption，particle size and other characterization methods were used to characterize the suspended solids before and after modification，and their catalytic performance was studied when applied to semi-synthetic catalytic cracking catalysts.The system verification and evaluation results indicated that the suspension was a mixture of Y-shaped molecular sieve and amorphous silicon aluminum material，with elemental composition mainly composed of silicon oxide，aluminum oxide，etc.After modification，the suspension had the Brunauer-Emmett-Teller（BET） surface area of 490 m²/g and pore volume of 0.42 cm³/g.It had excellent structural stability and a high total acid content.The micro reactivity reached 35% at 800 ℃ for 17 hours，significantly higher than that of the matrix material in use.Compared with catalysts without suspended solids，catalysts containing suspended solids showed that the conversion yield was increased from 83.9% to 81.1%，the slurry yield was decreased from 6.17% to 5.06% and gasoline yield was increased from 52.10% to 53.95%，total liquid yields was increased from 85.37% to 86.59%，without increasing dry gas and coke.It demonstrated that suspended sludge had excellent heavy oil conversion ability and product selectivity，and could be used as a low-cost，high-performance matrix material in the field of fluid catalytic cracking.

Key words: fluid catalytic cracking, suspended sludge, matrix material

CLC Number:

TE624

ZHANG Li, HU Qingxun, CHEN Jun, LIU Huangfei, FANG Hua, WANG Jiujiang, LIU Honghai, CAO Gengzhen. Study on highly active FCC matrix materials prepared by suspended solids and catalytic performance[J]. Inorganic Chemicals Industry, 2025, 57(7): 127-133.

Figures/Tables 12

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项目	D₁₀/μm	D₅₀/μm	D₉₀/μm
悬浮物	1.19	15.30	46.87
高岭土	1.24	2.56	8.76

项目	D₁₀/μm	D₅₀/μm	D₉₀/μm
悬浮物	1.19	15.30	46.87
乳化后的悬浮物	0.66	3.71	9.73

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Inorganic Acid-Base-Salt Committee of CIESC

Study on highly active FCC matrix materials prepared by suspended solids and catalytic performance

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材料	微反活性/%	材料	微反活性/%
高岭土	8	碱处理高岭土	19
拟薄水铝石	10	悬浮物改性材料	35
酸处理高岭土	16

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