Constant shear continuous reactor device

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;
• 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, and
• an apparatus that controls the flow rates of a gas through the gas inlet, a first liquid through the first liquid inlet and a final liquid through the final liquid inlet, such that an annular flow of a liquid film mixture comprising the first and final liquids is formed in the mixing zone section, wherein:
• the mixing zone section is located at a downstream position relative to the gas outlet and the first liquid outlet;
• the reactor outlet is located at a downstream position relative to the mixing zone section;
• the mixing zone section and reactor outlet of the annular reactor wall tube has an inner diameter of from 100 nm to 53 mm;
• and
• when in use, a liquid film forming section is formed on an inner surface of the first annular liquid delivery tube.