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US 7,332,057 B2Granted
Method of vaporizing liquids by microwave heating
AssigneePraxair Technology, Inc.
InventorsWendell Isom, Prasad Apte, Arthur Edward Holmer
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Abstract
This invention is directed to a method for vaporizing a liquid by slowly evaporating the liquid from a liquid phase to a vapor phase below the boiling point of the liquid; and applying an effective amount of microwave power to maintain the slow evaporation of the liquid to produce a purified liquid.
Claims8
A method for separating a polar ammonia liquid comprising
- a) introducing an effective amount of microwave energy at a depth ranging from 2.6 mm to 30 mm into a top layer of the liquid;
- b) controlling the microwave energy that is introduced into the top layer of the liquid to maintain a temperature below the boiling point of the top layer of liquid;
- c) evaporating the top layer of liquid in the presence of the microwave energy while sustaining the temperature below the boiling point of the liquid to form purified vapors;
- and
- d) capturing the evaporated purified vapors.
2 more elements
A method for separating a polar ammonia liquid comprising
- a) introducing microwave energy at a depth of ranging from 2.6 mm to 30 mm into a top layer of the liquid to reach the top layer's boiling point;
- b) controlling the microwave energy to near the boiling point of the top layer;
- c) evaporating the top layer of liquid in the presence of the microwave energy while sustaining the temperature below the boiling point of the bulk liquid disposed underneath the top layer of liquid to form purified vapors;
- and
- d) capturing the evaporated purified vapors.
2 more elements
Dependencies are inferred from the claim text.