High carbon concentration biomass and biosolids slurry preparation using a hydro-thermal pretreatment

Patent metadata

Field	Value
Publication number	US-9822309-B2
Application number	US-201113038134-A
Country	US
Kind code	B2
Filing date	Mar 1, 2011
Priority date	Feb 5, 2002
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

Provided is a process where the biomass and bisolids are hydrothermally treated under a reductive gas. Using this process a high carbon content pumpable mixture of biomass and biosolid slurry is produced with a viscosity value of less than 1.5.

First claim

The invention claimed is:

1. A process for producing a pumpable high carbon content slurry comprising:
providing a mixture of water and a material selected from the group consisting of an agricultural product, wood, plant, paper and cardboard, wherein the material comprises a weight percentage between 30 wt % to 70 wt % of the mixture;
mixing the mixture with a residue produced from a waste water treatment process to form a slurry mixture; and
heating the slurry mixture under a non-oxidative gas to thereby produce the high carbon content slurry.

2. The process of claim 1 , wherein the non-oxidative gas is selected from the group consisting of argon, helium, nitrogen, hydrogen, carbon dioxide, or gaseous hydrocarbons, or mixtures thereof.

3. The process of claim 1 in which the slurry mixture is heated to the temperature having a range of 170 to 250° C.

4. The process of claim 1 , wherein the slurry mixture is heated under the non-oxidative gas at a pressure of 100 to 400 psi.

5. A process for converting biomass into a higher carbon content slurry, consisting essentially of:
grinding the biomass;
mixing the biomass with water to thereby form a first mixture, wherein the biomass comprises a weight percentage between 30 wt % to 70 wt % of the first mixture;
mixing the first mixture with a residue produced from a waste water treatment process to form a slurry mixture; and
heating the slurry mixture under a non-oxidative gas to thereby produce the high carbon content slurry.

6. The process of claim 5 , wherein the biomass is selected from the group consisting of an agricultural product, wood, plant, paper and cardboard.

7. The process of claim 5 , wherein the non-oxidative gas is selected from the group consisting of argon, helium, nitrogen, hydrogen, carbon dioxide, or gaseous hydrocarbons, or mixtures thereof.

8. The process of claim 5 , the slurry mixture is heated under the non-oxidative gas at a pressure of 100 to 400 psi.

Assignees

• Park Chan Seung
• Norbeck Joseph
• He Wei
• Univ California

Inventors

• Park Chan Seung
• Norbeck Joseph
• He Wei

Classifications

• C10J3/00

  Production of combustible gases containing carbon monoxide from solid carbonaceous fuels (destructive distillation processes C10B) · CPC title

• C10J2300/0916

  Biomass · CPC title

• C10B53/02 Primary

  of cellulose-containing material (production of pyroligneous acid C10C5/00) · CPC title

• C10J2300/0903

  Feed preparation · CPC title

• Y02E50/14

  Cross-Sectional Technologies · mapped topic