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US 12,358,849 B2Granted
Poultry litter-based fertilizer and a method for making the poultry litter-based fertilizer from poultry litter
AssigneePremiere Fertilizer Systems, LLC
InventorsArthur R. Shirley, Jr., Melissa C. Hayes
Life of this patent
Estimating the term…
Abstract
A method for producing a poultry litter-based fertilizer by a) supplying poultry litter to a rotating rotary drum, b) adding acid or a source of acid to the rotating rotary drum, wherein acid reacts with the poultry litter to form an acidified mixture, c) adding ammonia or a source of ammonia to the rotating rotary drum, d) drying and cooling the ammoniated product by evaporation of water to form a dried, cooled product in a free-flowing semi-solid or solid form, repeating the steps b) through d) until a desired nitrogen content is reached in the poultry litter-based fertilizer.
Claims17
A poultry litter-based inorganic fertilizer produced by a method comprising:
- a) supplying poultry litter to a rotating rotary drum;
- b) adding a strong acid and/or a source of strong acid comprising at least one of sulfuric acid, sulfur trioxide, or oleum to the rotating rotary drum, wherein the source of acid forms acid in the rotating rotary drum, and the strong acid in the rotating rotary drum reacts with the poultry litter to form heat and an acidified mixture;
- c) adding water and at least one of ammonia or a source of ammonia to the rotating rotary drum, wherein the source of ammonia forms ammonia in the rotating rotary drum, and the ammonia in the rotating rotary drum reacts with the acidified mixture to produce heat and an ammoniated mixture containing an ammonium salt;
- d) drying and cooling the ammoniated mixture by evaporation of water to form a dried, cooled product in a free-flowing semi-solid or solid form;
- e) repeating steps b) through d) at least one more time and until a nitrogen content of at least 8 wt. % is reached in the dried, cooled product;
- f) adjusting a pH in at least one step b) to destroy pathogens, weed seeds, drugs, hormones, and/or antibiotics present in the poultry litter;
- and
- g) final drying and cooling of the dried, cooled product to form the poultry litter-based inorganic fertilizer having an enhanced nitrogen level, enhanced ratio of nitrogen to phosphorous, and increased sulfur level compared to a poultry-based inorganic fertilizer produced by only running steps b) and c) once;
- wherein the poultry litter-based inorganic fertilizer comprises:
- at least 8 wt. % nitrogen wherein at least 13 wt. % of the nitrogen is from nitrogen in the poultry litter;
- at least 30 wt. % ammonium sulfate;
- at least 0.91 wt. % potassium which results from compounds present in the poultry litter;
- at least 9 wt. % sulfur;
- and
- at least 2.5 wt. % total other nutrients, secondary nutrients, and micronutrients from compounds present in the poultry litter.
12 more elements
A poultry litter-based inorganic fertilizer produced by a method comprising:
- a) supplying poultry litter to a rotating rotary drum;
- b) adding a strong acid and/or a source of strong acid comprising at least one of sulfuric acid, sulfur trioxide, or oleum to the rotating rotary drum, wherein the source of acid forms acid in the rotating rotary drum, and the strong acid in the rotating rotary drum reacts with the poultry litter to form heat and an acidified mixture;
- c) adding water and at least one of ammonia or a source of ammonia to the rotating rotary drum, wherein the source of ammonia forms ammonia in the rotating rotary drum, and the ammonia in the rotating rotary drum reacts with the acidified mixture to produce heat and an ammoniated mixture containing an ammonium salt;
- d) drying and cooling the ammoniated mixture by evaporation of water to form a dried, cooled product in a free-flowing semi-solid or solid form;
- e) repeating steps b) through d) at least one more time and until a nitrogen content of at least 8 wt. % is reached in the dried, cooled product;
- f) adjusting a pH in at least one step b) to destroy pathogens, weed seeds, drugs, hormones, and/or antibiotics present in the poultry litter;
- and
- g) final drying and cooling of the dried, cooled product to form the poultry litter-based inorganic fertilizer having an enhanced nitrogen level, enhanced ratio of nitrogen to phosphorous, and increased sulfur level compared to a poultry-based inorganic fertilizer produced by only running steps b) and c) once;
- wherein the poultry litter-based inorganic fertilizer comprises:
- at least 8 wt. % nitrogen wherein at least 13 wt. % of the nitrogen is from nitrogen in the poultry litter;
- at least 45 wt. % ammonium sulfate;
- at least 0.91 wt. % potassium which results from compounds present in the poultry litter;
- at least 9 wt. % sulfur;
- carbonized carbon compounds formed from organic compounds present in the poultry litter reacted with the sulfuric acid, sulfur trioxide, or oleum;
- and
- at least 2.5 wt. % total other nutrients, secondary nutrients, and micronutrients from compounds present in the poultry litter.
13 more elements
Dependencies are inferred from the claim text.