Fast mixing reactor and application thereof

Abstract

The invention discloses a fast mixing reactor and the application thereof. The fast mixing reactor comprises a first feeding passage casing, a reactor casing, a second feeding passage, a hollow impeller material dispenser, a rotating shaft and a first feeding dispenser, wherein the first feeding passage casing and the reactor casing are coaxially arranged and communicated with each other; the second feeding passage, the hollow impeller material dispenser and the rotating shaft are arranged along the central line of the fast mixing rector; the hollow impeller material dispenser is arranged inside the reactor casing and can rotate inside the reactor casing under the driving of the rotating shaft; the second feeding passage is communicated with the hollow impeller material dispenser; at least one first feeding port is formed on the first feeding passage casing; at least one reaction liquid outlet is formed at the tail end of the reactor casing; and feeding jet orifices are formed on the first feeding dispenser and the hollow impeller material dispenser. The fast mixing rector can realize instant quick mixing of two materials under the condition of relatively high production capability, so that the yield and the quality of target products can be improved.

Description

technical field [0001] The invention relates to a rapid mixing reactor, more specifically, a dynamic reactor capable of realizing rapid mixing and rapid reaction between fluids under large-scale production capacity. At the same time, the invention also provides a method for preparing isocyanate by phosgenation using the reactor, and a method for preparing polymethylene polyphenyl polyamine by aniline and formaldehyde using the reactor. Background technique [0002] In some chemical production processes, when complex fast parallel competitive reactions or fast serial competitive reactions occur between the reaction materials, the reaction products or intermediate products may further react with a certain component of the raw materials; the degree of these reactions is related to each There is a direct relationship between the concentration distribution of the material. Therefore, the initial mixing effect between materials will greatly affect the final product distribution, ...

AI Technical Summary

Problems solved by technology

When the flow rate of the streams is relatively low, it is relatively easy to mix the two streams, but when the production capacity is large, due to the enlargement of the flow channel, the two streams cannot be mixed evenly in a short period of time. A mixing distance is bound to be required, so that the chances of side reactions are greatly increased

Since the production capacity of the above two mixers has the maximum limit, and the reaction effect under high load becomes worse, it is necessary to develop more effective rapid mixing equipment to achieve rapid mixing and rapid reaction between materials under large-scale production capacity

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