公开(公告)号：EP4374949A1

公开(公告)日：2024-05-29

申请号：EP23211686.3

申请日：2023-11-23

申请人： Fuzhou University

发明人： JIANG, Lilong ,  HUANG, Kuan ,  CAI, Zhenping ,  CAO, Yanning ,  MA, Yongde

IPC分类号： B01D53/02 ,  B01D53/14 ,  C10G25/00 ,  C10G31/09 ,  C10G45/02 ,  C10G65/12 ,  C10G67/06 ,  C10G69/02 ,  C11B13/00 ,  C11C3/00

CPC分类号： Y02E50/10 ,  C10G2400/0620130101 ,  C10G2400/0420130101 ,  C10G2400/0820130101 ,  C10G3/50 ,  C10G3/46 ,  C10G3/49 ,  C10G45/62 ,  C10G69/02 ,  C10G67/06 ,  C10G65/12 ,  C10G25/00 ,  C10G31/09 ,  C11B13/00 ,  C11C3/003 ,  C10G2300/100720130101 ,  C10G45/02 ,  C10G2300/20120130101

摘要： The present invention discloses a coupling process for producing biodiesel from a waste FOG includes the following steps of: 1) removing solid impurities from a waste FOG, and mixing the FOG after removal with an alcohol and a liquid acid catalyst for a pre-esterification reaction to generate a pre-esterified mixture; 2) mixing the pre-esterified mixture with water, and charging the mixture into a liquid-liquid separator to separate an aqueous phase to remove metal ions to obtain an esterification product II; 3) mixing the esterification product II with a vulcanizator and H2 for a pre-hydrogenation reaction to generate a product I; 4) separating the product I to obtain an oil phase, mixing the oil phase with H2 and passing the mixture into a fixed-bed reactor, and using a gas-liquid separator for separation to obtain an oil phase product II; 5) charging the oil phase product II and hydrogen gas into a hydroisomerization reactor for a reaction to generate a product II; and 6) charging the product II into a gas-liquid separator to separate out a liquid phase product, and charging the liquid phase product into a fractionation tower to separate out a biodiesel product. The production process in the present invention is stable and reliable and has strong adaptability to raw materials. Raw materials such as catalysts and excessive hydrogen can be recycled during a production process to ensure the long-term operation of a system.