Manufacturing of bioorganic-augmented high nitrogen-containing inorganic fertilizer
First Claim
1. A method of manufacturing a fertilizer comprising:
- in a first mixer, mixing an organic sludge with a force sufficient to produce a paste;
adding acid to the paste to produce an acidic paste in the first mixer;
transferring the acidic paste to one of three pressure vessels, blending the acidic paste with ammonium salts in the one pressure vessel;
reacting the acidic paste under high atmospheric pressure and temperature within the one pressure vessel;
emptying the one pressure vessel into a second mixer;
mixing at least one member selected from the group consisting of a pH control agent and a hardening agent with the reacted paste in the second mixer; and
removing water to form a fertilizer;
wherein while a first pressure vessel is filling, a second pressure vessel is reacting, and a third pressure vessel is emptying to create a batch system.
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Abstract
The invention describes a new method for the production of high nitrogen organically-augmented inorganic fertilizer that incorporates municipal biosolids or organic sludges that can compete with traditional fertilizers such as ammonium phosphate, ammonium sulfate and urea on the commodity fertilizer marketplace. The method creates a thixotropic paste-like material from the biosolids or organic sludge that is blended with hot or molten ammonium salts, especially a mixture of ammonium phosphate and ammonium sulfate. The invention can be an add-on to commercial production of ammonium salts or it can stand alone by manufacturing ammonium salts prior to their introduction to the conditioned biosolids. The invention is oriented to be tailored to production facilities for individual municipal waste treatment plants in order to keep manufacturing plants small with a minimization of logistics and liability.
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Citations
46 Claims
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1. A method of manufacturing a fertilizer comprising:
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in a first mixer, mixing an organic sludge with a force sufficient to produce a paste; adding acid to the paste to produce an acidic paste in the first mixer; transferring the acidic paste to one of three pressure vessels, blending the acidic paste with ammonium salts in the one pressure vessel; reacting the acidic paste under high atmospheric pressure and temperature within the one pressure vessel; emptying the one pressure vessel into a second mixer; mixing at least one member selected from the group consisting of a pH control agent and a hardening agent with the reacted paste in the second mixer; and removing water to form a fertilizer; wherein while a first pressure vessel is filling, a second pressure vessel is reacting, and a third pressure vessel is emptying to create a batch system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification