US9340741B2
Active / In Force
US
⏱️ 2.9 years remaining
Biomass torrefaction mill
Assignee: Gas Technology Institute
•
Filing: 2009-09-09
•
Granted: 2016-05-17
•
Expires: 2029-09-09
Abstract
Abstract A biomass torrefaction system includes a mill which receives a raw biomass feedstock and operates at temperatures above 400 F (204 C) to generate a dusty flue gas which contains a milled biomass product.
Inventors
- 👤 Kenneth M. Sprouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:05
CPC Classifications
C; C10; C10L; C10L5/00; C10L5/40; C10L5/44; B; B02; B02C; B02C21/00; B02C23/00; B02C23/08; B02C23/18; B02C23/24; B02C23/34; C10B; C10B49/00; C10B49/02; C10B53/00; C10B53/02; C10L9/00; C10L9/08; C10L9/083; F; F26; F26B; F26B1/00; F26B1/005; F26B25/00; F26B25/005; F26B2200/00; F26B2200/02; Y; Y02; Y02E; Y02E50/00; Y02E50/10; Y02E50/14; Y02E50/15; Y02E50/30; Y02P; Y02P20/00; Y02P20/141; Y02P20/145
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
68 words
A mill which receives a raw biomass feedstock comprising: a rotor having a plurality of blades; and an active water cooling system that is connected to communicate water to each of the plurality of blades of the rotor, wherein said plurality of blades rotates in a steady state condition with the raw biomass feedstock at a tip speed of at least 500 ft/sec in a 400 F environment.
Claim 2
Dependent Claim
68 words
A mill which receives a raw biomass feedstock comprising: a rotor having a plurality of blades; and an active water cooling system that is connected to communicate water to each of the plurality of blades of the rotor, wherein said plurality of blades rotates in a steady state condition with the raw biomass feedstock at a tip speed of at least 500 ft/sec in a 400 F environment.
Claim 3
Dependent Claim
52 words
A mill which receives a raw biomass feedstock comprising: a rotor having a plurality of blades; and an active water cooling system that is connected to communicate water to each of the plurality of blades of the rotor, wherein the active water cooling system is connected to receive water from a condenser.
Claim 4
Dependent Claim
52 words
A mill which receives a raw biomass feedstock comprising: a rotor having a plurality of blades; and an active water cooling system that is connected to communicate water to each of the plurality of blades of the rotor, wherein the active water cooling system is connected to receive water from a condenser.
Claim 5
Dependent Claim
20 words
The mill as recited in claim 2 , wherein the condenser is connected to receive product downstream from the mill.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2019-05-17 | 2019-11-16 | 2020-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2023-05-17 | 2023-11-16 | 2024-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2027-05-17 | 2027-11-16 | 2028-05-17 | $7700.00 | Pending Window |