System and method for production of granular ammonium sulfate
AssigneePCI Nitrogen, LLC
InventorsPraveen Jain, Santiago Gomez, Mark D. Ibsen
Life of this patent
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Abstract
A system for the production of ammonium sulfate granules including a pipe cross reactor (PCR) configured to contact concentrated sulfuric acid with anhydrous ammonia to produce a PCR product comprising ammonium sulfate; and a granulator fluidly connected to the PCR, whereby PCR product extracted from the PCR can be introduced into the granulator, an inlet for ammonium sulfate seed material, an ammonia sparger configured to spray liquid anhydrous ammonia onto a bed of ammonium sulfate granules within the granulator, and a granulator product outlet configured for extraction of granulator product comprising ammonium sulfate granules from the granulator. A method of producing ammonium sulfate granules is also provided.
Claims94
A system for the production of ammonium sulfate granules, the system comprising:
- a pipe cross reactor (PCR) configured to contact concentrated sulfuric acid with anhydrous ammonia to produce a PCR product comprising ammonium sulfate;
- and
- a granulator fluidly connected to the PCR, whereby PCR product extracted from the PCR can be introduced into the granulator, and comprising an inlet for ammonium sulfate seed material, an ammonia sparger configured to spray liquid anhydrous ammonia onto a bed of ammonium sulfate granules within the granulator, and a granulator product outlet configured for extraction of granulator product comprising ammonium sulfate granules from the granulator;
- wherein the pipe cross reactor comprises a discharge section located internal to the granulator, and configured to introduce the PCR product ammonium sulfate thereto.
A method of producing ammonium sulfate granules, the method comprising:
- introducing a pipe cross reactor (PCR) feed comprising concentrated sulfuric acid and anhydrous ammonia into a PCR configured to produce ammonium sulfate via ammoniation of the sulfuric acid, thus producing a PCR product comprising ammonium sulfate;
- and
- separately introducing at least a portion of the PCR product, ammonium sulfate seed material, and liquid, anhydrous ammonia into a granulator configured to produce a granulator product comprising ammonium sulfate granules having size within a desired size range;
- wherein at least a portion of the PCR product is introduced into the pipe cross reactor via a discharge section thereof located internal to the granulator.
A system for the production of ammonium sulfate granules, the system comprising:
- a pipe cross reactor (PCR) configured to contact concentrated sulfuric acid with ammonia to produce a PCR product comprising ammonium sulfate;
- and
- a granulator fluidly connected to the PCR, whereby PCR product from the PCR can be introduced into the granulator, and comprising an inlet for ammonium sulfate seed material, ammonia spray nozzles configured to spray anhydrous ammonia inside the granulator to contact ammonium sulfate granules within the granulator, and a granulator product outlet configured for extraction of granulator product comprising ammonium sulfate granules from the granulator;
- wherein the pipe cross reactor comprises a discharge section located internal to the granulator, and configured to introduce the PCR product into the granulator.
A method of producing ammonium sulfate granules, the method comprising:
- introducing an acid feed consisting of concentrated sulfuric acid, a water feed, and an ammonia feed into a PCR configured to produce a PCR product comprising ammonium sulfate;
- and
- introducing at least a portion of the PCR product, ammonium sulfate seed material, and anhydrous ammonia into a granulator configured to produce a granulator product comprising ammonium sulfate granules;
- wherein the anhydrous ammonia is introduced into the granulator by spraying,
- wherein at least a portion of the PCR product is introduced into the granulator via a discharge section of the PCR located internal to the granulator.
The method of claim 78 wherein the desired size range comprises size guide numbers (SGNs) from about 280 to about 350.
A method of producing ammonium sulfate granules, the method comprising:
- introducing a feed comprising an acid component comprising concentrated sulfuric acid, a water component, and an ammonia component into a PCR configured to produce a PCR product comprising ammonium sulfate;
- and
- introducing at least a portion of the PCR product, ammonium sulfate seed material, and anhydrous ammonia into a granulator configured to produce a granulator product comprising ammonium sulfate granules;
- wherein at least a portion of the PCR product is introduced into the granulator via a discharge section of the PCR located internal to the granulator,
- wherein an amount of water introduced to the PCR from the ammonia component, the water component, and the acid component is about 25% to about 75% by weight of the feed.
Dependencies are inferred from the claim text.