Hydrogenation Technology II (Batch Liquid Phase Hydrogenation)

Thread Content

This post was last edited by liuquan1100 on 2017-12-29 at 14:18. Batch liquid-phase hydrogenation can be classified according to the mode of operation into: I. Batch reactors, also known as intermittent batch reactors. The reaction raw materials are fed in at once, and after hydrogenation and maturation, they are discharged all at once. Batch reactors are flexible in operation and easy to adapt to different operating conditions and product types, making them particularly suitable for the production of small batches of various products that require a long reaction time. However, the disadvantage of batch reactors is that they require auxiliary operations such as loading and unloading, which consume a significant amount of non-production time. Product quality is also difficult to stabilize. However, for some reaction processes, such as certain fermentation and polymerization reactions, as well as those with long reaction times, it remains difficult to achieve continuous production; batch reactors are still used to this day. II. The continuous batch reactor, also known as a continuous tank, consists of two or more reaction tanks connected in series. It avoids the disadvantages of batch reactors; in situations where mixing is intense, the liquid viscosity is low, or the average residence time is long, the flow pattern of the material inside the reactor can be considered as fully mixed, and such a reactor is accordingly referred to as a fully mixed reactor. In situations where a high conversion rate is required or where there are side reactions in series, a multi-reactor series configuration can be employed to minimize the adverse effects of backmixing, and the reaction conditions can be controlled separately for each reactor to achieve continuous reaction.