COMPOSITION ANALYSIS OF DEMERCAPTANIZED RESIDUAL STREAMS AND GAS CONDENSATES AS RAW MATERIALS FOR THE SYNTHESIS OF MERCAPTAN-CONTAINED ODORANTS

##article.abstract##

This article describes the structural analysis of demercaptanization residual flows and gas condensates as raw
materials for the synthesis of mercaptanic odorant. As a result of gas chromatographic analysis, it was established that
the content of methyl-, ethyl-, propyl-, isopropyl-, isobutyl-, and n-butylmercaptans in gas condensate and demercaptanization
residual streams is high, and they are promising as the primary raw material for obtaining odorant components. It
is scientifically substantiated that during the alkaline extraction process, mercaptans react with NaOH and transition into
the aqueous phase in the form of sodium mercaptide (RSNa); at a flow rate of 120 l/h and 5% NaOH, the concentration
of RSN after extraction was 920 ppm, while at a flow rate of 70 l/h and 10% NaOH, this value decreased to 120 ppm, and
the RSN concentration reached 6450 ppm. These results showed that an increase in alkali concentration and a decrease
in flow velocity increase the transition of mercaptans into the alkaline phase