IP Library Granted Patent US 12,672,602
Granted Patent B2
US 12,672,602 · App. 17/336,029 · Granted Jul 7, 2026

Device and method for combined generation and fertigation of nitrogen fertilizer

Inventors: Joshua Michael McEnaney (East Palo Alto, CA); John Anthony Schwalbe (Palo Alto, CA); Nicolas Hunter Pinkowski (Stanford, CA); Brian Andrew Rohr (Palo Alto, CA)
Assignee: Nitricity Inc.
A01C23/042A01C23/007C05C5/00
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Quick Facts
Patent No.
US 12,672,602
App. No.
17/336,029
Filed
Jun 1, 2021
Granted
Jul 7, 2026
Kind
B2
Examiner
TAI, XIUYU
Art Unit
1795
USPC
239/10
Abstract

Systems for producing nitrogen compounds that are configured for integration with an irrigation device. The systems generally include an absorber receiving a reactor-outlet stream comprising one or more oxidized nitrogen species, the absorber containing water to produce a nitrogen-compound stream comprising nitrates, nitrites, nitric acid, salts thereof, or a mixture thereof; and a system-outlet port configured to be fluidically coupled to an irrigation line, the system-outlet port in fluid communication with the absorber to receive at least a portion of the nitrogen-compound stream and provide the nitrogen-compound stream to the irrigation line.

Claims (18)

1 . A system for producing nitrogen compounds that is configured for integration with an irrigation device, the system comprising:

an absorber receiving a reactor-outlet stream comprising one or more oxidized nitrogen species, the absorber containing water to produce a nitrogen-compound stream comprising nitrates, nitrites, nitric acid, salts thereof, or a mixture thereof;

a system-outlet port configured to be fluidically coupled to an irrigation line, the system-outlet port in fluid communication with the absorber to receive at least a portion of the nitrogen-compound stream and provide the nitrogen-compound stream to the irrigation line;

a one-way valve in fluid communication with the system-outlet port and configured to permit fluid to flow therethrough in solely one direction, wherein the one-way valve is arranged to permit fluid to flow to the system-outlet port;

a plasma reactor producing the reactor-outlet stream comprising the one or more oxidized nitrogen species, the plasma reactor in fluid communication with the absorber; and

a storage chamber in fluid communication with the absorber to receive the nitrogen-compound stream from the absorber;

wherein the storage chamber is a neutralization chamber configured to produce a neutralized nitrogen-compound stream comprising at least one neutralized nitrogen compound chosen from calcium carbonate, sodium carbonate, magnesium carbonate, calcium hydroxide, potassium carbonate, potassium hydroxide, potash, lime grit, limestone, rock phosphate, ammonium hydroxide, calcium nitrate, zinc oxide, potassium nitrate, sodium nitrate, nitrophosphates, ammonium nitrate, zinc nitrate, and a combination thereof;

an injection pump in fluid communication with the neutralization chamber, the injection pump to pump the neutralized nitrogen-compound stream to the system-outlet port;

wherein the one-way valve is disposed within a conduit downstream from the injection pump; and

an outlet filter in fluid communication with the system-outlet port, the outlet filter is downstream from the injection pump and upstream from the system-outlet port or the outlet filter is downstream from the neutralization chamber and upstream from the injection pump, the filter to remove particles before the nitrogen compound stream is provided to the irrigation line.

2 . The system of claim 1 , wherein the neutralization chamber includes a filter coupled to an outlet port of the neutralization chamber.

3 . The system of claim 1 , further comprising:

a mixing chamber in fluid communication with the neutralization chamber and configured to receive and mix the neutralized nitrogen-compound stream.

4 . The system of claim 1 further comprising:

a water-inlet conduit fluidically coupleable to the irrigation line and configured to receive water from the irrigation line, the water-inlet conduit is in fluid communication with the absorber and is configured to provide water to the absorber.

5 . The system of claim 1 , further comprising:

a sensor detecting liquid flow through the irrigation line; and

a controller coupled to the sensor, the controller configured to activate the release of the nitrogen-compound stream, the neutralized nitrogen-compound stream, or a combination thereof through the system output port and into the irrigation line in response to liquid flowing through the irrigation line.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2021
From: MCENANEY, JOSHUA MICHAEL; SCHWALBE, JOHN ANTHONY; PINKOWSKI, NICOLAS HUNTER; ROHR, BRIAN ANDREW
To: NITRICITY INC.
Reel/Frame 056425/0267 →
Continuity (4)
Continuation In Part 17240768 · Apr 26, 2021
Provisional Application 63032701 · May 31, 2020
Provisional Application 63015651 · Apr 26, 2020
Related Publication 20210360847A1 · Nov 25, 2021
References Cited (35)
US 4141715A · Wyse et al. · 1979 [cited by applicant]
US 4297123A · Wyse et al. · 1981 [cited by applicant]
US 4451436A · O'Hare · 1984 [cited by applicant]
US 4877589A · O'Hare · 1989 [cited by applicant]
US 5192355A · Eastin · 1993 [cited by applicant]
US 6193934B1 · Yang · 2001 [cited by applicant]
US 7934544B2 · Hitzman et al. · 2011 [cited by applicant]
US 8628598B1 · Miller et al. · 2014 [cited by applicant]
US 20070272543A1 · Burlica et al. · 2007 [cited by applicant]
US 20090236215A1 · Burlica et al. · 2009 [cited by applicant]
US 20100048850A1 · Dubois · 2010 [cited by applicant]
US 20120297673A1 · Keller · 2012 [cited by applicant]
US 20130028820A1 · Lee et al. · 2013 [cited by applicant]
US 20150021277A1 · Rothschild · 2015 [cited by examiner]
US 20160102025A1 · Nunnally et al. · 2016 [cited by applicant]
US 20180071707A1 · Salerno · 2018 [cited by examiner]
CA 3036980 · 2018 [cited by applicant]
CN 104291282 · 2015 [cited by applicant]
CN 105294175 · 2016 [cited by applicant]
CN 107075384 · 2017 [cited by applicant]
CN 107875988 · 2018 [cited by applicant]
CN 108990248 · 2018 [cited by applicant]
CN 208667524 · 2019 [cited by applicant]
CN 109627054 · 2019 [cited by applicant]
FR 2709748 · 1995 [cited by applicant]
JP 2019501007 · 2019 [cited by applicant]
TW 201914969 · 2019 [cited by applicant]
WO 2009091978 · 2009 [cited by applicant]
WO 2010142004 · 2010 [cited by applicant]
WO 2016063302 · 2016 [cited by applicant]
WO 2018226313 · 2018 [cited by applicant]
Anastasopoulou, A. Conceptual Process Design of Plasma-Assisted Nitrogen Fixation through Energy, Environmental and Economic Assessment, Environmental and Economic Assessment, Technische Universiteit Eindhoven, Sep. 19,… [cited by applicant]
Hawtof et al., Catalyst-Free Highly Selective Synthesis of Ammonia from Nitrogen and Water by a Plasma Electrolytic System, Science Advances, 5:eaat5778, Jan. 11, 2019 (10 pages). [cited by applicant]
Hollevort et al., Towards Green Ammonia Synthesis Through Plasma-Driven Nitrogen Oxidation and Catalytic Reduction, Angewandte Chemie, 132(52):p. 24033-24037, Sep. 20, 2020 (14 pages). [cited by applicant]
International Searching Authority, International Search Report and Written Opinion, mailed in relationship to International Application No. PCT/US2021/035265, mailed Sep. 3, 2021 (11 pages). [cited by applicant]