Solid aerosol generator
AssigneeThe United States of America as represented by the United States Department of Energy
InventorsDonald S. Prescott, Robert K. Schober, John Beller
Life of this patent
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Abstract
An improved solid aerosol generator used to produce a gas borne stream of dry, solid particles of predetermined size and concentration. The improved solid aerosol generator nebulizes a feed solution of known concentration with a flow of preheated gas and dries the resultant wet heated aerosol in a grounded, conical heating chamber, achieving high recovery and flow rates.
Claims9
A method for preparing a stream of dry, solid particles comprising:
- heating a flow of gas,
- directing said heated flow of gas adjacent to a stream of solute in a solvent, nebulizing said solute in a solvent and said heated flow of gas, and and, forming an aerosol of said gas, solute and solvent,
- drying said wet heated aerosol in a grounded, conical heating chamber to form a gas borne stream of dry, solid particles.
A method of providing a stream of dry solid particles of minute size and consistent concentration comprising:
- preparing a feed solution comprising a solute in a solvent of predetermined concentration,
- nebulizing a mixture of said feed solution and preheated gas to form a wet heated aerosol, and
- drying said wet heated aerosol in a grounded, conical heating chamber to provide a gas borne stream of dry solid particles of consistent concentration, based upon the concentration of the feed solution.
A method for preparing a stream of dry solid particles of predetermined size and predetermined concentration comprising:
- preparing a feed solution comprising a solute in a solvent of predetermined concentration,
- nebulizing said feed solution with a flow of preheated gas, flowing at a predetermined rate and at a predetermined temperature to form a wet heated aerosol,
- and drying said wet heated aerosol in a grounded, conical heating chamber.
A dry aerosol generator comprising:
- means for providing a preheated flow of gas, and a stream of feed solution comprised of a solute in a solvent in predetermined concentration,
- means for nebulizing a mixture of said preheated flow of gas and said feed solution to form a wet heated aerosol,
- a grounded, conical drying chamber for receiving said wet heated aerosol and,
- means for heating said drying chamber to a substantially constant temperature sufficient to vaporize said solvent and to produce a gas borne stream comprised almost exclusively of dry, solid particles.
Dependencies are inferred from the claim text.