Solid‐solid and gas‐gas mixing properties of a new two‐impinging‐streams mixer

A new device for solid‐solid and gas‐gas continuous mixing, based on the impingement of two streams, was developed and successfully tested. It was found that in comparison to other available solid‐solid pneumatic mixers, such as the fluidized bed, spouted bed, air mixer, and mixing silo, the new device is very convenient and easy to operate and more energy‐efficient. This is also true for gas‐gas mixing when compared with a fluidized bed. A model for the gas phase behavior in the mixing of two gases was successfully tested, which supplements the picture of the solid particles behavior predicted from a model previously derived by the authors.