The Effects of Reaction Condition on the Aromatization Reaction of Huabei LPG

Abstract

By using Huabei liquefied petroleum gas as a feedstock, the effects of reaction temperature and weight hourly space velocity on the aromatization product yield, conversion, motor octane number (MON), research octane number (RON), and liquid product compound were researched in a confined fluidized bed reactor. The experimental result showed that the yield of off-gas, liquefied petroleum gas, and coke increase with the increase of reaction temperature, but the yield of gasoline and diesel oil decrease with the increase of reaction temperature. The conversions of Huabei C4 liquefied petroleum gas are above 97%. The MON and RON of liquid production reach the maximum at 430°C. With increasing weight hourly space velocity, the yield of off-gas and liquefied petroleum gas increased, but the yield of gasoline and diesel oil dropped; conversion of C4 liquefied petroleum gas is about 97% and its yield first increased and then decreased with increasing weight hourly space velocity. The MON and RON of solvent production first increased and then decreased with the increase of weight hourly space velocity, and these had a maximum from 1 to 9 h−1. The optimizing operation condition would be confined when the reaction temperature is 430–450°C and weight hourly space velocity is from 3 to 5 h−1. The gasoline, diesel oil, and the aromatics contents of liquid production before entering gasoline and after entering liquefied petroleum gas are higher than these simultaneously entering gasoline and liquefied petroleum gas and before entering liquefied petroleum gas and after entering gasoline.