Lignin fired supercritical or near critical water generator, system and method

Patent metadata

Field	Value
Publication number	US-9518729-B2
Application number	US-201213366729-A
Country	US
Kind code	B2
Filing date	Feb 6, 2012
Priority date	Dec 13, 2011
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

Methods are disclosed for providing recovered lignin of suitable quantity and quality to provide sufficient heating value to power the generation of supercritical or near critical water without the need for outside sources of energy. Supercritical or near critical water generator devices and systems are also disclosed.

First claim

What is claimed is:

1. A system for generating supercritical or near critical water, comprising:
a biomass conversion system adapted to produce lignin from a material comprising lignocellulose using supercritical or near critical water;
a supercritical or near critical water generator adapted to provide supercritical or near critical water to said biomass conversion system, said supercritical or near critical water generator comprising:
at least one pump adapted to provide water at a pressure of at least about 221 bar to form compressed water; and
at least one fuel combustion apparatus adapted for combusting a fuel composition comprising said lignin;
wherein said lignin has a heating value of at least about 3,000 BTU/lb;

a fuel handling system adapted to transport said lignin from said biomass conversion system to said fuel combustion apparatus; and
a water circulation system adapted to transport said compressed water in proximity of said fuel combustion apparatus adequate to heat said compressed water to a temperature of at least about 373° C. to produce said supercritical or near critical water.

2. The system of claim 1 ,
wherein said lignin has a heating value of at least about 5,000 BTU/lb.

3. The system of claim 1 ,
wherein said lignin has a heating value of at least about 7,500 BTU/lb.

4. The system of claim 1 , further comprising:
at least one dryer for said fuel composition comprising lignin.

5. The system of claim 1 ,
wherein said lignin is in a powdered form.

6. The system of claim 5 ,
wherein said lignin is in a pelletized form.

7. The system of claim 5 ,
wherein said lignin is in a liquid form.

8. The system of claim 1 , further comprising:
a preheater for said water or said compressed water in association with said water circulation system.

9. The system of claim 8 ,
wherein said preheater heats said water or said compressed water to a temperature of about 100° C. to about 300° C.

Assignees

• Simard Michel Adam
• Renmatix Inc

Inventors

• Simard Michel Adam

Classifications

• F23G2206/203

  with a power/heat generating installation · CPC title

• F23G2900/55011

  Detecting the properties of waste to be incinerated, e.g. heating value, density · CPC title

• F22B1/18 Primary

  the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines · CPC title

• Y02E20/12

  Heat utilisation in combustion or incineration of waste · CPC title

• F23G5/04

  drying · CPC title