IP Library Granted Patent US 8,701,573
Granted Patent B2
US 8,701,573 · App. 12/782,558 · Granted Apr 22, 2014

Gasification combustion system

Inventors: Ron Broglio (Vandiver, AL); Hanwei Zhang (Princeton, NJ); Robert Lees Barker (Hockessin, DE); Stephen Paul Goff (Fairfield, NJ)
Assignee: Convanta Energy Corporation
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Quick Facts
Patent No.
US 8,701,573
App. No.
12/782,558
Granted
Apr 22, 2014
Kind
B2
Abstract

A two stage refuse gasification combustion system for processing refuse is disclosed. The system may contain features such as an advancer, a first and second gasifier, a drier, a gas regulator, and a post combustor. Additionally, methods for regulating gas and advancing refuse through a two stage refuse gasification combustion system are disclosed.

Claims (15)

1. A high moisture refuse gasification combustion system for processing high moisture refuse, said system comprising: an advancer, a drier, a gasifier, a first gas regulator, and a post combustor:

a. said advancer extending from the drier to the gasifier for moving refuse from the drier to the gasifier;

b. said post combustor comprising a connection to the gasifier;

c. said first gas regulator comprising:

i. a plurality of input and output ports including:

a first input port for receiving gas from the drier;

a second input port for receiving gas from a first gas source;

a first output port for directing gas into the gasifier; and

a second output port for directing gas into the post combustor

ii. valves for regulating gas flow in the system, and

iii. control circuitry or software to allow the regulator to control opening and closing of the valves which regulate how much gas flows into the input port and how much gas flows out of the output port; and

d. a central controller containing software for causing the controller to perform the steps of controlling the speed of the advancer, controlling a flow rate of gas through a first and second gas splitter, and controlling a positioning of the valves in the first gas regulator.

2. The system of claim 1 wherein the system comprises a port extending from the gasifier to the post combustor.

3. The system of claim 1 wherein the post combustor comprises an ash collector connected to a bottom ash collector.

4. The system of claim 1 , further comprising a second gas source connected to the first gas regulator.

Assignments (6)
CHANGE OF NAME Recorded Feb 4, 2026
From: COVANTA ENERGY, LLC
To: REWORLD WASTE, LLC
Reel/Frame 074604/0054 →
RELEASE OF SECURITY INTEREST Recorded Nov 30, 2021
From: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
To: COVANTA ENERGY CORPORATION
Reel/Frame 058248/0455 →
SECURITY AGREEMENT Recorded Nov 30, 2021
From: COVANTA HOLDING CORP.; COVANTA ENERGY, LLC; COVANTA ENERGY CORPORATION
To: BARCLAYS BANK PLC, AS AGENT
Reel/Frame 058289/0723 →
CHANGE OF NAME Recorded Jul 16, 2014
From: COVANTA ENERGY CORPORATION
To: COVANTA ENERGY, LLC
Reel/Frame 033347/0112 →
SECURITY AGREEMENT Recorded May 11, 2012
From: COVANTA ENERGY CORPORATION
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 028194/0854 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 30, 2010
From: BROGLIO, RON; ZHANG, HANWEI; BARKER, ROBERT LEES; GOFF, STEPHEN PAUL
To: COVANTA ENERGY CORPORATION
Reel/Frame 024770/0114 →
Continuity (2)
Continuation In Part 12467887 · May 18, 2009
Related Publication 20100288173A1 · Nov 18, 2010