Hydrorefining of Caprolactam in Magnetically Stabilized Bed Reactor

Caprolactam is the monomer for the synthesis of nylon-6 and engineering plastics. Hydrorefining of caprolactam is an important process to obtain high purity caprolactam. In the process of hydrorefining of caprolactam in magnetically stabilized bed (MSB) reactor, hydrogen is dissolved in caprolactam aqueous solution. Then the hydrogen-containing caprolactam aqueous solution contacts with amorphous nickel alloy catalyst in the liquid-solid MSB reactor. The unsaturate impurities in caprolactam aqueous solution are turned into saturated ones by hydrogenation. As result, the quality of caprolactam is greatly improved.