Reaction device applied to mixed acid reaction

Abstract

The invention relates to a reaction device applied to mixed acid reaction, which can be used for a mass transfer reaction process. The reaction device mainly comprises an upper reactor and a lower reactor; an upper separator and a lower separator are connected to an upper end and a lower end of a shell of an upper reaction device and a lower reaction device respectively; a first acid inlet and a second acid inlet are positioned on the lower separator, and the position of the first acid inlet is higher than that of the second acid inlet; a first acid outlet and a second acid outlet are positioned on the upper separator, and the position of the second acid outlet is lower than that of the first acid outlet; and the interior of the reaction device is loaded with a columnar filler of which the middle is provided with small holes, and the filler is a ceramic filler. The reaction device applied to the mixed acid reaction is particularly applicable to mixing sulfuric acid and nitric acid.

Description

technical field [0001] The invention belongs to the technical field of chemical machinery and relates to a reaction device, which is used for the mass transfer reaction process between immiscible mixed acids. Background technique [0002] When two immiscible acids need to react with each other, one of the acids must be sufficiently dispersed into the other so that there is a large enough contact area between the two phases. There are two commonly used methods. One is that two acids enter the reaction kettle at the same time or successively, and a high-speed stirring paddle is used to mechanically push the two phases to mix and react. Next, the two acids flow through the tubular reaction device from top to bottom, and enter the next unit after mixing and reacting. The above-mentioned first method, due to the characteristics of the reactor, determines that the conversion rate of the reaction is low, and the energy consumption of high-speed stirring is also high. Due to the hi...

AI Technical Summary

Problems solved by technology

The above-mentioned first method, due to the characteristics of the reactor, determines that the conversion rate of the reaction is low, and the energy consumption of high-speed stirring is also high. Due to the high corrosiveness of the mixed acid, the requirements for the material are also high.

In the second method, first, the two acids must enter the tubular reaction device under a certain pressure, which requires high energy consumption and high requirements on the material of the reaction device.

Images