OPTIMIZING OXYGEN EXTRACTION BY VENT GAS ANALYSIS: PROCESS CONTROL AND SAFETY.

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

A method has been developed to estimate the amount of residual oxygen in the extraction tower headspace following oxygen alkali extraction (E//O). This analysis can be used during the startup of new E//O systems to rapidly determine operating efficiency. At existing E//O installations, it is a useful tool for control and troubleshooting. Tests conducted at several mills indicate that residual oxygen is a function of oxygen dosage, reaction pressure, and retention time in the E//O stage. Temperature and mixing efficiency also affect residual oxygen. The experimental procedure and method of analysis are described. Carbon monoxide (CO), a by-product of the E//O reaction, is also measured as a safety consideration. Control of the oxygen and carbon monoxide content in E//O vent gas contributes to the safe and efficient operation of an E//O stage.

Original languageEnglish (US)
Pages (from-to)94-97
Number of pages4
JournalTappi Journal
Volume69
Issue number7
StatePublished - Jul 1986
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Media Technology
  • Materials Science(all)
  • Mechanical Engineering

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