US 12,459,817 B2
Systems and methods for producing sulfurous acid
Jon Baker, Sandy, UT (US); and Paul Thomson Baker, Holladay, UT (US)
Assigned to AGUA DULCE CAPITAL, LLC, Sandy, UT (US)
Filed by AGUA DULCE CAPITAL, LLC, Sandy, UT (US)
Filed on Apr. 15, 2024, as Appl. No. 18/636,023.
Application 18/636,023 is a continuation of application No. 17/050,399, granted, now 11,981,561, previously published as PCT/US2016/032377, filed on May 13, 2016.
Claims priority of provisional application 62/160,980, filed on May 13, 2015.
Prior Publication US 2024/0286898 A1, Aug. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B01J 4/00 (2006.01); B01J 19/00 (2006.01); B01J 19/24 (2006.01); C01B 17/54 (2006.01)
CPC C01B 17/54 (2013.01) [B01J 4/001 (2013.01); B01J 19/0013 (2013.01); B01J 19/0086 (2013.01); B01J 19/245 (2013.01); B01J 19/2465 (2013.01); B01J 2204/005 (2013.01); B01J 2219/00087 (2013.01); B01J 2219/0015 (2013.01); B01J 2219/00157 (2013.01)] 26 Claims
 
1. A sulfuric acid generating system comprising:
a primary burn chamber;
an exhaust pipe extending from the primary burn chamber at a first end so that burned sulfur exhaust traverses the exhaust pipe from the first end to an opposite second end;
a secondary burn chamber located between the first end and second end of the exhaust pipe;
a primary venturi pump having a gas inlet coupled to an outlet at the second end of the exhaust pipe and having a first aqueous media inlet and having a first fluid outlet;
a first collection tank that collects aqueous output from the first fluid outlet of the primary venturi pump, wherein the first collection tank includes a gas headspace above a liquid container, and optionally includes a first collection tank fluid outlet;
at least a second venturi pump having a gas inlet that is fluidly coupled with the gas headspace and having a second aqueous media inlet and having a second fluid outlet;
a fluidic recycle loop that recycles sulfurous acid from at least one of the first collection tank fluid outlet or second fluid outlet to at least one of the first aqueous media inlet or second aqueous media inlet,
wherein the fluidic recycle loop recycles sulfurous acid to decrease pH of the sulfurous acid in each recycle.