Spray drying of liquids

• US 3,236,285 A
• Filed: 06/24/1963
• Issued: 02/22/1966
• Est. Priority Date: 07/06/1962
• Status: Expired due to Term

• Current Assignee: Abel Smith Thomas, Antony J. Mee
• Original Assignee: Abel Smith Thomas, Antony J. Mee
• Inventors: Mee, Antony J., ABEL SMITH THOMAS
• Application Number:
  US04/289,993
• Time in Patent Office: 974 Days
• US Class Current: 159/4.01
• CPC Class Codes: A23C 1/04 by spraying into a gas stream
• CPC Class Codes: A23L 3/46 Spray-drying
• CPC Class Codes: A23L 3/54 using irradiation or electrical treatment, e.g. ultrasonic waves
• CPC Class Codes: A61K 31/59 Compounds containing 9, 10- seco- cyclopenta[a]hydrophenanthrene ring systems
• CPC Class Codes: B01D 1/18 to obtain dry solids B01D1/24 takes precedence
• CPC Class Codes: C13K 1/10 Crystallisation
• CPC Class Codes: F26B 3/12 in the form of a spray , i.e. sprayed or dispersed emulsions or suspensions spray drying of solutions B01D1/18
• CPC Class Codes: F26B 3/30 from infrared-emitting elements by radiation emanating from passages containing heated fluids other than combustion gases F26B23/10
• CPC Class Codes: Y10S 159/06 Infrared

Claims

2. THE METHOD OF SPRAY DRYING A LIQUID SUBSTANCE CONTAINING DISSOLVED OR SUSPENDED SOLID COMPRISING THE STEPS OF ADMITTING A STREAM OF AIR AT SUBSTANTIALLY ATMOSPHERIC TEMPERATURE AND PRESSURE DOWNWARDLY INTO A SPRAYING REGION AT THE UPSTREAM END OF AND ABOVE A VERTICALLY ELONGATED DRYING ZONE;

SPRAYING THE LIQUID SUBSTANCE DOWNWARDLY INTO AND BELOW SAID AIR ADMISSION LOCATION OF SAID REGION TO FORM DROPLETS THEREIN;

PASSING THE DROPLETS AND AIR CONCURRENTLY THROUGH THE ELONGATED DRYING ZONE;

SUBJECTING THE DROPLETS IN SAID ZONE TO INFRA RED RADIATION UNTIL THE RESULTING PARTICLES ARE SUBSTANTIALLY DRY AND SEPARATING THE PARTICLES AND MOSITURE-LADEN AIR AND COLLECTING THE DRIED PARTICLES.