US5044093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray-drying granulation apparatus
Assignee: Ohkawara Kokohki Co Ltd
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Filing: 1990-04-25
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Granted: 1991-09-03
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Expires: 2010-04-25
Abstract
Abstract A spray-drying granulation apparatus having: a spray drying section formed in an upper position of a chamber wherein sprayed feed liquid particles are dried to powder by a hot-air; and a powder granulation section formed in a power position of the chamber, and provided with a nozzle for feeding a binder liquid. There is no need of maintaining sticky powder or completely dried powder to the lower section. The sprayed particles can be dried to powder in a wide drying range before they are granulated in the granulation section by a binder liquid. The degree of granulation can be selected as desired while preventing attachment of powder to the inner wall of the chamber due to incomplete drying.
Inventors
- 👤 Takashi Itoh
- 👤 Masayuki Serizawa
- 👤 Masaaki Ohkawara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:47
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/16; B01D1/18; A; A23; A23C; A23C1/00; A23C1/04; A23C1/05; B01J; B01J2/00; B01J2/16; Y; Y10; Y10S; Y10S159/00; Y10S159/03
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
129 words
A spray-drying granulation apparatus comprising: a chamber; a spray drying section formed in said chamber at an upper portion thereof and including a feed liquid supply atomizer for supplying a feed liquid and means for supplying hot air to dry said feed liquid to a powder having a moisture content sufficiently low to prevent the powder from attaching to the chamber; and a fluidized-bed granulation section formed in a lower portion of said chamber for fluidizing and moving powder discharged from said spray drying section, said granulation section including a spray nozzle for feeding a binder liquid to said powder in said fluidized-bed granulation section to increase the moisture content of the powder to control granulation thereof; and means for discharging a granulated product from said fluidized-bed granulation section.
Claim 2
Dependent Claim
129 words
A spray-drying granulation apparatus comprising: a chamber; a spray drying section formed in said chamber at an upper portion thereof and including a feed liquid supply atomizer for supplying a feed liquid and means for supplying hot air to dry said feed liquid to a powder having a moisture content sufficiently low to prevent the powder from attaching to the chamber; and a fluidized-bed granulation section formed in a lower portion of said chamber for fluidizing and moving powder discharged from said spray drying section, said granulation section including a spray nozzle for feeding a binder liquid to said powder in said fluidized-bed granulation section to increase the moisture content of the powder to control granulation thereof; and means for discharging a granulated product from said fluidized-bed granulation section.
Claim 3
Dependent Claim
59 words
A spray-drying granulation apparatus according to claim 1, comprising a device for successively taking wherein said spray drying section is constituted by a cylindrical portion and a cone-shaped portion disposed under said cylindrical portion, and wherein said fluidized-bed granulation section is in the form of a cylinder and is continuously formed with the lower end of said cone-shaped portion.
Claim 4
Dependent Claim
19 words
A spray-drying granulation apparatus according to claim 1, wherein said feed liquid supply atomizer includes a pressure spray nozzle.
Claim 5
Dependent Claim
19 words
A spray-drying granulation apparatus according to claim 1, wherein said feed liquid supply atomizer includes a two-fluid spray nozzle.
Claim 6
Dependent Claim
20 words
A spray-drying granulation apparatus according to claim 1, wherein said feed liquid supply atomizer is of a rotary disk type.
Claim 7
Dependent Claim
24 words
A spray-drying granulation apparatus according to claim 1, wherein said binder liquid supply nozzle provided in said granulation section includes a two-fluid spray nozzle.
Claim 8
Dependent Claim
143 words
A spray-drying granulation apparatus comprising: a chamber; a spray drying section formed in said chamber at an upper portion thereof and including a feed liquid supply atomizer for supplying a feed liquid and means for supplying hot air to dry said feed liquid to a powder having a moisture content sufficiently low to prevent the powder from attaching to the chamber; and an agitating-granulation section formed in a lower portion of said chamber for agitating and moving powder discharged from said spray drying section, said granulation section including a main blade rotatable about a vertical axis, a sub-agitating blade rotatable about a horizontal axis and a spray nozzle for feeding a binder liquid to said powder in said granulation section to increase the moisture content of the powder to control granulation thereof; and means for discharging a granulated product from said agitating-granulation section.
Claim 9
Dependent Claim
143 words
A spray-drying granulation apparatus comprising: a chamber; a spray drying section formed in said chamber at an upper portion thereof and including a feed liquid supply atomizer for supplying a feed liquid and means for supplying hot air to dry said feed liquid to a powder having a moisture content sufficiently low to prevent the powder from attaching to the chamber; and an agitating-granulation section formed in a lower portion of said chamber for agitating and moving powder discharged from said spray drying section, said granulation section including a main blade rotatable about a vertical axis, a sub-agitating blade rotatable about a horizontal axis and a spray nozzle for feeding a binder liquid to said powder in said granulation section to increase the moisture content of the powder to control granulation thereof; and means for discharging a granulated product from said agitating-granulation section.
Claim 10
Dependent Claim
126 words
A spray-drying granulation apparatus comprising: a chamber; a spray drying section formed in said chamber at an upper portion thereof and including a feed liquid supply atomizer for supplying a feed liquid and means for supplying hot air to dry said feed liquid to a powder having a moisture content sufficiently low to prevent the powder from attaching to the chamber; and a spouted-bed granulation section formed in a lower portion of said chamber for moving powder discharged from said spray drying section, said granulation section including a spray nozzle for feeding a binder liquid to said powder in said granulation section to increase the moisture content of the powder to control granulation thereof; and means for discharging a granulated product from said spouted-bed granulation section.
Claim 11
Dependent Claim
126 words
A spray-drying granulation apparatus comprising: a chamber; a spray drying section formed in said chamber at an upper portion thereof and including a feed liquid supply atomizer for supplying a feed liquid and means for supplying hot air to dry said feed liquid to a powder having a moisture content sufficiently low to prevent the powder from attaching to the chamber; and a spouted-bed granulation section formed in a lower portion of said chamber for moving powder discharged from said spray drying section, said granulation section including a spray nozzle for feeding a binder liquid to said powder in said granulation section to increase the moisture content of the powder to control granulation thereof; and means for discharging a granulated product from said spouted-bed granulation section.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-02 | 1995-03-04 | 1995-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-02 | 1999-03-04 | 1999-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-02 | 2003-03-04 | 2003-09-03 | $7700.00 | Window Closed / Lapsed |