ao9b03044_si_001.pdf (127.5 kB)
Controlling Nitrogen Oxide (NOx) Emissions from Exothermic Nitrogen Generation Systems for Application in Subsea Environments
journal contribution
posted on 2019-12-13, 19:29 authored by Felipe
J. S. Bispo, Vinicius Kartnaller, João CajaibaA highly exothermic nitrogen generation system (NGS)
can be achieved
by mixing solutions of sodium nitrite and ammonium chloride, a process
used by the oil and gas industry to dissolve paraffin wax and gas
hydrates. Although its main products are nitrogen gas and a sodium
chloride brine, the NGS has a side reaction that produces nitrogen
oxides. To optimize this process to ensure the greatest and fastest
heat generation with the lowest oxide production, this reaction was
checked by infrared spectroscopy and calorimetry. The factors temperature,
pH, and initial concentration of nitrite and ammonium were evaluated,
and the optimal conditions of the NGS were determined by the constructed
models to predict heat and NOx generation.
These conditions were a ratio of ammonium/nitrite equal to 1 and a
catalyst concentration of 0.07 mol·L–1 (for
a case in which the temperature is 5 °C).
History
Usage metrics
Categories
Keywords
Exothermic Nitrogen Generation Systemsgas industryheat generationNGSside reactionnitrogen generation systemSubsea Environmentsx generationgas hydratescatalyst concentrationnitrogen oxidesControlling Nitrogen Oxideparaffin waxoxide productionnitrogen gasammonium chloridesodium chloride brinefactors temperaturesodium nitrite
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC