IP Library › Granted Patent US 9,340,741
Granted Patent B2
US 9,340,741 · App. 12/556,009 · Granted May 17, 2016

Biomass torrefaction mill

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Quick Facts
Patent No.
US 9,340,741
App. No.
12/556,009
Granted
May 17, 2016
Kind
B2
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.

Claims (7)

1. 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.

2. 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.

3. The mill as recited in claim 2 , wherein the condenser is connected to receive product downstream from the mill.

Assignments (6)
RELEASE OF SECURITY INTEREST Recorded Aug 5, 2016
From: U.S. BANK NATIONAL ASSOCIATION
To: AEROJET ROCKETDYNE OF DE, INC. (F/K/A PRATT & WHITNEY ROCKETDYNE, INC.)
Reel/Frame 039597/0890 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 18, 2015
From: AEROJET ROCKETDYNE OF DE, INC.
To: GAS TECHNOLOGY INSTITUTE
Reel/Frame 036395/0477 →
CHANGE OF NAME Recorded Jul 30, 2013
From: PRATT & WHITNEY ROCKETDYNE, INC.
To: AEROJET ROCKETDYNE OF DE, INC.
Reel/Frame 030902/0313 →
SECURITY AGREEMENT Recorded Jun 21, 2013
From: PRATT & WHITNEY ROCKETDYNE, INC.
To: U.S. BANK NATIONAL ASSOCIATION
Reel/Frame 030656/0615 →
SECURITY AGREEMENT Recorded Jun 17, 2013
From: PRATT & WHITNEY ROCKETDYNE, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 030628/0408 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 9, 2009
From: SPROUSE, KENNETH M.
To: PRATT & WHITNEY ROCKETDYNE, INC.
Reel/Frame 023207/0951 →