Liquid nitrogen cocktail extremely damaging to body tissue, causing frostbite and cryogenic burning on contact. If ingested it can lead to severe internal damage, destroying tissue in the mouth and digestive tract. Furthermore, as it evaporates liquid nitrogen releases a large volume of gas, which means it can burst the stomach if swallowed in a sufficiently large amount. The potential danger of liquid nitrogen cocktails was highlighted by an incident that occurred in the United Kingdom in October 2012. On 4 October, an 18-year-old woman named Gaby Scanlon was admitted to hospital with severe abdominal pain and shortness of breath after drinking a
Gas–liquid contactor is higher for equipment with higher values of gas–liquid interface surface area, so gas–liquid contactors with high surface area (e.g. packed column, spray tower) are often preferred when it is important to lower the cost of the equipment. Liquid hold-up is also an important factor for the economy of the process, because for low values of liquid hold-up a bigger equipment is needed to have the same heat and mass transfer velocity. For this reason, gas–liquid contactors with low liquid-hold-up (e.g. falling-film column) in general are not used at industrial scale. Gas–liquid contactor A gas–liquid contactor is a particular chemical