Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1994-07-20
1995-02-21
Niebling, John
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204103, 204130, 204131, 2041824, C25B 102, B01D 6100
Patent
active
053912683
ABSTRACT:
The present invention relates to an electrochemical process for the removal of excess or residual nitric acid from aqueous hydroxylammonium nitrate (HAN) solutions. The process utilizes a multi-compartment electrochemical membrane cell in which the HAN solution flows through a central ion exchanging compartment bounded by anion membranes on either side. Electrochemically generated OH-ions formed at the cathode are used to displace and remove the nitric acid from the HAN solution. In use, the residual nitric acid content in the HAN is suitably reduced to a specified safe level before the HAN is concentrated to a 13.0 molar final composition.
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Cawlfield David W.
Kaczur Jerry J.
Muse Elizabeth K.
Woodard, Jr. Kenneth E.
Carlson Dale L.
Niebling John
Olin Corporation
Phasge Arun S,.
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