Experts in air separation, please share the main methods and measures for monitoring and controlling hydrocarbons in air separation processes
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Experts in air separation, please share the main methods and measures for monitoring and controlling hydrocarbon emissions in this process. Where do hydrocarbons tend to accumulate most frequently?
Hydrocarbons mainly accumulate in the main cryogenic liquid oxygen, and online total carbon content analysis is typically performed, or chromatographic analyzers are used to determine the levels of various hydrocarbons.
Typically, a complete air separation unit ensures that no carbon accumulates in the main cooler by discharging 1% of the liquid oxygen daily, while also controlling the emission of hydrocarbons from surrounding processes into the atmospheric environment.
Detection is carried out using online total carbon content analysis and chromatographic analysis to measure hydrocarbon content. Some of the main cooling liquid oxygen is discharged to keep the hydrocarbon content in the main cooler within the specified process limits.
The external compression process requires the daily discharge of liquid oxygen to control the hydrocarbon content.