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US 10,570,013 B2Granted
Methods to make ammonium perchlorate
AssigneeMalvi Technologies, LLC
InventorVinod Malhotra
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention relate to methods and systems for producing ammonium perchlorate.
Claims31
A method of producing ammonium perchlorate, the method comprising:
- passing a sodium perchlorate solution through an anodic chamber of an electrochemical cell;
- chemically or catalytically controlling an amount of chlorate in the sodium perchlorate solution;
- circulating water through a cathodic chamber of the electrochemical cell;
- biasing a cathode and an anode of the electrochemical cell having a cation membrane effective to produce a perchloric acid in predominantly sodium perchlorate solution and oxygen gas in the anodic chamber, and sodium hydroxide and hydrogen gas in the cathodic chamber;
- neutralizing the perchloric acid in solution with an ammonium hydroxide solution to produce an ammonium perchlorate precipitate therefrom;
- separating the ammonium perchlorate precipitate from the slurry of precipitated ammonium perchlorate in sodium perchlorate;
- washing the ammonium perchlorate precipitate to remove any residual sodium therefrom;
- and
- drying the ammonium perchlorate precipitate.
6 more elements
The claim of method 20, further comprising recycling the centrate back to one or more of the electrochemical cell or a dissolution tank.
A method of producing ammonium perchlorate, the method comprising:
- passing a sodium perchlorate solution through an anodic chamber of an electrochemical cell;
- chemically or catalytically controlling an amount of chlorate in the sodium perchlorate solution;
- circulating water through a cathodic chamber of the electrochemical cell;
- biasing a cathode and an anode of the electrochemical cell, effective to produce a perchloric acid in predominantly sodium perchlorate solution and oxygen gas in the anodic chamber, and sodium hydroxide and hydrogen gas in the cathodic chamber;
- neutralizing the perchloric acid in the predominantly sodium perchlorate solution with ammonia gas to produce an ammonium perchlorate precipitate therefrom;
- separating the ammonium perchlorate precipitate from the predominantly sodium perchlorate solution;
- washing the ammonium perchlorate precipitate to remove any residual sodium therefrom;
- and
- drying the ammonium perchlorate precipitate.
6 more elements
A system for producing ammonium perchlorate, the system comprising:
- a feed tank housing a supply of sodium perchlorate feed solution, wherein the feed tank is configured to chemically or catalytically control an amount of chlorate in the sodium perchlorate solution;
- an electrochemical cell including an anode compartment including an anode therein, a cathode compartment including a cathode therein, a cationic membrane disposed between and at least partially separating the cathode compartment and the anode compartment, the anode compartment is fluidly coupled to the feed tank and the cathode compartment is fluidly coupled to a deionized water supply;
- an ammonium perchlorate precipitation vessel operably coupled to an output of the anode compartment and a by-product collection vessel operably coupled to an output of the cathode compartment;
- a slurry tank operably coupled to the ammonium perchlorate precipitation vessel;
- a liquid-solid separation apparatus operably coupled to the slurry tank and configured to separate ammonium perchlorate precipitate from a sodium perchlorate liquor.
2 more elements
Dependencies are inferred from the claim text.