Abstract: A certain refinery company discharges 3,000 t/a waste methanol from its POX methanol wash unit.Through qualitative analysis by mass spectrometry,the mass fractions of benzene and methanol in waste methanol are 41.97 w% and 57.88 w%,respectively.The waste methanol is used as raw material for FCC reaction in a small fixed fluidized bed experimental device.The yields of C3-C4 and C5-C5+ in the gas products are 3.86% 4.76%,respectively at a reaction temperature of 525℃ when the ratio of catalyst to methanol is 9.The yield of light oil in liquid collection system is 13.99%.It is suggested that the best blending proportion of waste methanol in FCC is in the range of 3%-4%.Through blending,LPG yield can be increased by 2-2.5 percentage points and the yield of olefins in LPG can be increased by 1%-2%.
卢德庆, 辛靖, 朱元宝, 任绪金, 苏梦军. 催化裂化装置掺炼废甲醇的可行性探索[J]. 现代化工, 2021, 41(5): 212-216.
LU De-qing, XIN Jing, ZHU YUAN-bao, REN Xu-jin, SU Meng-jun. Feasibility study on blending waste methanol in FCC. Modern Chemical Industry, 2021, 41(5): 212-216.