Disclosed herein is a constant shear continuous reactor device, comprising: an annular gas delivery tube comprising a gas inlet and a gas outlet; a first annular liquid delivery tube comprising a first liquid inlet and a first liquid outlet arranged concentrically around the annular gas delivery tube along a common axis, where the first liquid outlet is located at a downstream position relative to the gas outlet or is coterminous with the gas outlet; and an annular reactor wall tube comprising a final liquid inlet, a mixing zone section and a reactor outlet, where the annular reactor wall tube is arranged concentrically around the first annular liquid delivery tube along the common axis.

Disclosed herein is a constant shear continuous reactor device, comprising: an annular gas delivery tube comprising a gas inlet and a gas outlet; a first annular liquid delivery tube comprising a first liquid inlet and a first liquid outlet arranged concentrically around the annular gas delivery tube along a common axis, where the first liquid outlet is located at a downstream position relative to the gas outlet or is coterminous with the gas outlet; and an annular reactor wall tube comprising a final liquid inlet, a mixing zone section and a reactor outlet, where the annular reactor wall tube is arranged concentrically around the first annular liquid delivery tube along the common axis.

The invention provides a microdroplet- or bubble-producing device that does not require separate through-holes for different liquid droplet/air bubble-producing flow channels. The droplet-producing flow channels are configured in a three-dimensional manner unlike in a conventional device where they are configured in a two-dimensional plane, and therefore the flow channels can be provided in a more high-density configuration than the prior art. In the microdroplet/bubble-producing device comprising slit(s) and the row of the plurality of microflow channels, the slit(s) is/are a continuous phase supply slit, a dispersion phase supply slit and a discharge slit, the plurality of microflow channels are configured so that the ends of the slit(s) and the two supply ports on both sides or the supply port and discharge port on either side are mutually connected, and at the sites of connection between the microflow channels and the slit(s), the dispersion phase undergoes shear with the continuous phase flow as the driving force, producing droplets or air bubbles of the dispersion phase, which are recovered from the discharge port.

A controlled, high throughput custom foam generator is disclosed which has the ability to generate foam with varying cell characteristics. The generated foam can be two or three dimensional with controlled gas volume ratio, void sizes, placement and distribution in a matrix. Additionally the device can create individual bubbles or bubble strings. The device streams two or more fluids creating one or more virtual orifices that generate uni modal bubbles displaying crystalline behavior. Unlike known prior art, the device embodies simple controls to easily alter and scale the nature of generated foam. The generator can be single, or be part of an array of generators. The ability to easily alter the resulting bubble and cell composition allows the creation of engineered foams of any structure and packing with controlled foam features such as weight, strength, opacity and persistence; thus making it suitable for a wide variety of applications.

The invention provides a microdroplet- or bubble-producing device that does not require separate through-holes for different liquid droplet/air bubble-producing flow channels. The droplet-producing flow channels are configured in a three-dimensional manner unlike in a conventional device where they are configured in a two-dimensional plane, and therefore the flow channels can be provided in a more high-density configuration than the prior art. In the microdroplet/bubble-producing device comprising slit(s) and the row of the plurality of microflow channels, the slit(s) is/are a continuous phase supply slit, a dispersion phase supply slit and a discharge slit, the plurality of microflow channels are configured so that the ends of the slit(s) and the two supply ports on both sides or the supply port and discharge port on either side are mutually connected, and at the sites of connection between the microflow channels and the slit(s), the dispersion phase undergoes shear with the continuous phase flow as the driving force, producing droplets or air bubbles of the dispersion phase, which are recovered from the discharge port.