关键词: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">苯乙烯, 乙苯脱氢, 催化剂结块, 钾迁移, 钾聚集, 反应温度, 反应器压力降

Abstract: A phenylethylene unit's ethylbenzene dehydrogenation catalyst experienced agglomeration after long-term use. To explore the cause of the catalyst agglomeration, solubility experiments and calcination experiments were carried out, and the components of the agglomerates were analyzed using X-ray fluorescence spectroscopy. The experimental results showed that the white solid on the surface of the agglomerated catalyst was soluble in water; after calcination at 800℃ for 4 hours, the sediment still existed, and the small blocky particles were hard and not easily broken; the white solid was a potassium-containing substance. The agglomeration of the ethylbenzene dehydrogenation catalyst in this unit was caused by the migration and aggregation of potassium during the long-term use of the catalyst. This study can provide some technical reference for reducing the agglomeration of ethylbenzene dehydrogenation catalysts in production.

Key words: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">Phenylethylene, Ethylbenzene dehydrogenation, Catalyst agglomeration, Potassium migration, Potassium aggregation, Reaction temperature, Reactor pressure drop