Stabilized liquid ammonia fertilizer from animal waste
AssigneesPerfect Blend, LLC, Hyof, LP
InventorsDaniel T. Hazen, John S. Martin, Lloyd Patrick Burchard, William P. Love
Life of this patent
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Abstract
A liquid fertilizer is produced from off-gassed ammonia resulting from the processing of animal waste materials, particular animal manure. The vaporized ammonia is generated primarily by heating the animal waste materials and capturing the resulting vapors and particulate materials. The ammonia vapors and particles are removed from the gas stream through a scrubbing operation, which creates an ammonium-enriched liquid stream that can be concentrated into an organic fertilizer having a high-nitrogen content.
Claims20
A method of processing manure comprising water and ammonia into a liquid fertilizer composition comprising the steps of:
- (a) reducing the pH of the manure to generate ammonium from the ammonia;
- (b) heating the manure to vaporize at least a portion of the water contained therein, generate fine carbonaceous particles having ammonium sorbed thereon, and disperse the fine carbonaceous particles in an air stream;
- (c) contacting the air stream comprising the vaporized water and fine carbonaceous particles with a liquid water stream and dispersing the carbonaceous particles within the liquid water stream to form a nitrogen-rich liquid, wherein the air stream comprising the vaporized water and the fine carbonaceous particles processed in step (c) is unmodified from step (b);
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- (d) removing water from the nitrogen-rich liquid to form the liquid fertilizer composition.
A method of processing manure comprising water and ammonia into a liquid fertilizer composition comprising the steps of:
- (a) reducing the pH of the manure to generate ammonium from the ammonia;
- (b) heating the manure to vaporize at least a portion of the water and ammonium contained therein;
- (c) introducing fine carbonaceous particles into the vaporized water and ammonium and causing at least a portion of the ammonium to become sorbed thereon thereby forming a stream comprising the fine carbonaceous particles having ammonium sorbed thereon;
- (d) contacting the stream comprising the fine carbonaceous particles having ammonium sorbed thereon with a liquid water stream and dispersing the carbonaceous particles within the liquid water stream to form a nitrogen-rich liquid, wherein the stream comprising the fine carbonaceous particles processed in step (d) is unmodified from step (c);
- and
- (e) removing water from the nitrogen-rich liquid to form the liquid fertilizer composition.
Dependencies are inferred from the claim text.