Production and use of a soil amendment made by the combined production of hydrogen, sequestered carbon and utilizing off gases containing carbon dioxide

• US 20040111968A1
• Filed: 10/22/2003
• Published: 06/17/2004
• Est. Priority Date: 10/22/2002
• Status: Abandoned Application

• Current Assignee: CCRMS, Ltd., UT-Battelle LLC
• Original Assignee: CCRMS, Ltd.
• Inventors: Day, Danny Marshal, Lee, James Weifu
• Application Number:
  US10/690,838
• Publication Number:
  US 20040111968A1
• Time in Patent Office: Days
• US Class Current: 48/197FM
• CPC Class Codes: C05C 9/005 Post-treatment
• CPC Class Codes: C05D 9/00 Other inorganic fertilisers
• CPC Class Codes: C05G 5/36 layered or coated with sulfur
• CPC Class Codes: C05G 5/37 layered or coated with a polymer
• CPC Class Codes: C10B 53/02 of cellulose-containing material production of pyroligneous acid C10C5/00
• CPC Class Codes: Y02E 50/10 Biofuels, e.g. bio-diesel

Abstract

This invention relates a series of steps to provide an economical production of a carbon based fertilizer and soil amendment made during the capture of greenhouse gases from the combustion of fossil and non fossil fuels. The invention uses biomass and other carbonaceous sources through pyrolytic conversion to gases and charcoal, to allow for the further production of co-products, such as hydrogen and ammonia. The invention also relates to the combination of hydrated ammonia, combustion flue gas exhaust, and charcoal, provide for the conversion of the charcoal into a valued added soil amendment to return essential trace minerals and plant nutrients to the soil. The ability to produce a large volume carbon co-product while removing mandated emissions and producing renewable based hydrogen provides an economic gain to a large number small and large businesses and increase the chance of achieving significant reductions in greenhouse gas emissions.

Claims

1. A process for the pyrolysis of biomass and other carbonaceous materials releasing a pyrolytic gas high in volatile organic compounds and producing a solid carbon charcoal residue.

2. The process as in claim 1 where the temperature of the charcoal is managed to such that its does not exceed the temperature range between 350C where 500C for more than 2 minutes to maximize the formation of surface acids groups and preferential adsorption of bases which include ammonia.

3. The process as in claim 1 where the temperature of the resulting char particles exceeds 500C and is further heated or allowed to oxidized where the temperature remains above 600C for greater than 10 minutes to minimize the production of surface acids groups.

4. The process as in claims 1, 2 and 3 wherein the residue is further processed under various conditions, including but not limited to pressure, mechanical actions, heat, steam, oxygen, acid, carbon dioxide, addition of fertilizer components, such as potassium, magnesium, ammonium sulfate, ammonium nitrate, micro mineral nutrients such as iron molybdenum minerals, to optimize it for specific applications as an adsorbent and carrier of other materials.

5. The process as in claim 1, where in the gas is further processed using ceramic membranes to the convert and extract a purified hydrogen stream, or by using steam reforming or catalytically reforming of the pyrolysis or synthesis gas to produce a mixture gases including hydrogen, carbon monoxide, methane and carbon dioxide and where the carbon monoxide is produced it is converted through a high temperature or low temperature catalytic CO water shift reaction to hydrogen where hydrogen and carbon dioxide are the major components of the resulting gas.

6. The process as in claim 5, for separating the any unpurified hydrogen from carbon dioxide, nitrogen or other parasitic gases using standard industrial techniques, such as pressure swing adsorption, or membrane separation.

7. A process in accordance with claims 1, 5 and 6, where the combination of the hydrogen and air are used in standard industrially accepted techniques to produce ammonia or ammonium nitrate or other nitrogen compounds typical to those industry practices.

8. The process in accordance with claims 2 and 4, whereby all or a portion of the solid charcoal and ammonia, and water is injected or brought into intimate contact with the off-gas stream of a combustion or other process where such gas stream has a concentration of carbon dioxide, sulfur dioxide and nitrous oxide and where there is a desire to reduce the discharge of these materials into the atmosphere.

9. The process in accordance with claims 3 and 4, whereby all or a portion of the solid charcoal, and ammonia, and water is injected or brought into intimate contact with the off-gas stream of a combustion or other process where such gas stream has a concentration of carbon dioxide, sulfur dioxide and nitrous oxide and where there is a desire to reduce the discharge of these materials into the atmosphere.

10. The process in accordance with claims 8 and 9, where the charcoal residue and ammonia, water and off gases are held in intimate contact for at least 5 seconds.

11. The process as in claim 10 wherein the chemical reaction will allow ammonium bicarbonate (NH₄HCO₃) to be formed in the charcoal pores and onto its surface to produce NH₄HCO₃-charcoal fertilizers.

12. The process as in claim 10 wherein the chemical reaction also allows the formation of ammonium salts of nitrogen oxides and sulfur dioxide to be formed in contact with NH₄HCO₃-charcoal fertilizers.

14. A process in accordance with claims 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11, 12, or 13 where those compounds beneficial for plant growth are created or adsorbed onto the internal pore structure of the carbon residue creating a material which provides a slow release of the compounds.

16. The use of a material as a soil amendment and fertilizer made with the processes described in claims 1 through 11 and creating those materials as described in claims 11, 12 or 13.

13. The creation of a slow release sequestering soil amendment fertilizer to be combined with materials used by plant growth and depositing those materials inside the internal pore structures of the carbon residue making a solid powder and or granular material suitable for large scale agricultural applications.

15. A process in accordance with claim 13, and a coating is used to facilitate the handling, flow and added control of the rate of release of those compounds, and where such materials as are commonly used to create coatings such as but not limited to gypsum, plaster, sulfur, polymers as materials which dissolve or create a permeable layer when placed in the soil.