Study on the catalyst for hydrogenation of butyraldehyde to butanol and its industrial application
The Cu-Zn-based catalyst for hydrogenation of butyraldehyde to butanol is prepared and the preparation methods and hydrogenation conditions are investigated.The optimum reaction conditions are obtained as followed: the inlet temperature is 125-130 ℃,the pressure is 0.4-0.5 MPa and the space velocity of raw material is about 0.40 h-1.Under the above conditions,the conversion of butyraldehyde and the selectivity for butanol can reach above 98% and 99% respectively.The bulk production and industrial application of the catalyst are studied.The results show that the catalyst has good performances and long life,which can replace imported catalyst successfully;and it can be run in high load and long operation period of butanol unit.