Nonaqueous purification of mixed nitrate heat transfer media

Patent · Tue Dec 20 00:00:00 EST 1983

OSTI ID:864807

Fiorucci, Louis C ^[1]; Morgan, Michael J ^[2]

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1. Hamden, CT
2. Guilford, CT

A nonaqueous, in-line method for removing carbonate and hydroxide contamination from a molten mixed sodium nitrate/potassium nitrate heat transfer salt. The method comprises dissolving a stoichiometric quantity of anhydrous Ca(NO.sub.3).sub.2 in the melt whereby an insoluble CaCO.sub.3 and Ca(OH).sub.2 precipitate is formed. The precipitate can be removed by settling, filtration or floatation techniques.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• Assignee: Olin Corporation (New Haven, CT)
• Patent Number(s): US 4421662
• Application Number: 06/414,725
• OSTI ID: 864807
• Country of Publication: United States
• Language: English

Related Subjects

nonaqueous
purification
mixed
nitrate
heat
transfer
media
in-line
method
removing
carbonate
hydroxide
contamination
molten
sodium
potassium
salt
comprises
dissolving
stoichiometric
quantity
anhydrous
melt
whereby
insoluble
caco
oh
precipitate
formed
removed
settling
filtration
floatation
techniques
comprises dissolving
potassium nitrate
method comprises
heat transfer
sodium nitrate
oxide contamination
method comprise
removing carbon
nitrate heat
transfer media
stoichiometric quantity
/252/423/