Recovery process of stearic acid hydrogenation catalyst

• Main Authors: XU LIANG, YANG YUJIE, WU JINMING, JIANG SHANGKUN, WANG LAN, QIN YONGMING, ZHU QIANG, WANG LONGYAO
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2018
• Subjects: ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES; CANDLES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; DETERGENTS; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS,OILS, OR FATTY ACIDS OBTAINED THEREFROM; FATTY ACIDS FROM FATS, OILS OR WAXES; FATTY ACIDS THEREFROM; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to a recovery process of a stearic acid hydrogenation catalyst. The recovery process comprises the following steps that 1, raw oil and the catalyst are mixed, heated and fed intoa hydrogenation tower; 2, hydrogen is pressurized to 2.0-2.3 MPa, then enters the hydrogenation tower from the bottom of the tower and is subjected to hydrogenation reaction with the heated raw oil;3, reactants after the hydrogenation reaction are guided out from the top of the tower and cooled, then enter a thermal separation tank and are subjected to gas-liquid separation, liquid enters an intermediate tank, and hydrogenated oil which contains the catalyst in the intermediate tank is introduced into a membrane concentration system through a fuel delivery pump so that the catalyst in the feed liquid can be concentrated; 4, the catalyst concentration liquid is conveyed to an air-cooled granulation tower in a granulation system and subjected to granulation recycling, and catalyst embedding particles with the avera