久久蜜臀一区二区三区avI日韩在线观看一区二区I三级精品在线I成人欧美一区二区三区白人I香蕉视频在线观看wwwI97爱视频I欧美成人aaa片一区国产精品I天天躁狠狠躁Ia天堂中文I97人妻精品一区二区三区免I制服丝袜先锋影音I亚洲熟女一区二区三区I成人午夜av国产传媒I91探花在线视频I嫩草在线观看I欧美日韩国产aI悠悠色综合网I美女打屁股网站I日本黄色片网址I亚洲丁香花色

Principle of hydrogenation reactor
1. working principle
Hydrogen, catalyst and materials are fully mixed through high-speed stirring, so as to achieve the effect of rapid reaction.
2.Structural composition
reaction kettleThe lower part of the kettle body is equipped with a gas distributor, and hydrogen is fully mixed with materials from bottom to top through the gas distributor.
3.Mixing form
Generally, the self-priming combined impeller is used, specifically, the lower layer adopts the propulsion impeller, the middle layer adopts the self-priming impeller, and the upper layer adopts the disc turbine or propulsion impeller.
4. Selection and requirements of mixing blades
The hollow shaft structure is adopted. When the rotating speed reaches a certain speed, a vacuum state is formed around the self-priming paddle. At this time, the hydrogen at the top of the container follows the hollow shaft to the lower part of the equipment under the action of pressure, and is thrown into the material to form bubbles under the condition of high-speed rotation, so as to achieve the purpose of full mixing.
5.Catalyst filling
The general catalyst for hydrogenation reaction is palladium carbon, nickel powder or activated carbon. The catalyst generally sinks at the bottom of the equipment. The role of the propeller is to stir the catalyst from the bottom of the head and make it circulate upward along the cylinder along the inner side of the head, so that the catalyst can fully contact the materials during the reaction process, making the reaction more sufficient and more efficient.