PROCESS FOR METHANOL COUPLED CATALYTIC CRACKING REACTION OF NAPHTHA USING A MODIFIED ZSM-5 MOLECULAR SIEVE CATALYST

摘要

THE PRESENT INVENTION PROVIDES A PROCESS FOR METHANOL COUPLED CATALYTIC CRACKING REACTION OF NAPHTHA USING A MODIFIED ZSM-5 MOLECULAR SIEVE CATALYST, COMPRISING PERFORMING A CO-FEEDING REACTION OF METHANOL AND NAPHTHA ON THE MODIFIED ZSM-5 MOLECULAR SIEVE CATALYST TO PRODUCE LOW CARBON OLEFINS AND/OR AROMATIC HYDROCARBONS. IN THE PROCESS, THE MODIFIED ZSM-5 MOLECULAR SIEVE CATALYST COMPRISES, IN TERM OF WEIGHT PERCENT, 25-80WT% OF A ZSM-5 MOLECULAR SIEVE, 15-70WT% OF A BINDER, AND 2.2-6.0WT% OF LANTHANUM AND 1.0-2.8WT% OF PHOSPHORUS LOADED ON THE ZSM-5 MOLECULAR SIEVE. THE NAPHTHA COMPRISES 63.8-89.5WT% OF SATURATED CHAIN ALKANES AND 5.6-29.8WT% OF CYCLIC ALKANES. THE NAPHTHA AND METHANOL CONCURRENTLY PASS THROUGH THE CATALYST BED, WHICH ARE REACTED DURING CONTACTING WITH THE CATALYST UNDER A REACTION CONDITION OF A REACTION TEMPERATURE OF 550-670°C, A MASS RATIO OF METHANOL TO NAPHTHA OF 0.05-0.8, AND A TOTAL MASS SPACE VELOCITY OF NAPHTHA AND METHANOL OF 1.0-5h⁻¹.