Nitrogen oxide absorption into water and dilute nitric acid in an engineering-scale sieve-plate column with plates designed for high gas-liquid interfacial area
The absorption of gaseous NO/sub x/ compounds into water and dilute HNO/sub 3/ was studied in a three-stage sieve-plate column with plates designed for high gas-liquid interfacial area. The performance of the column was measured while several operating parameters were varied. The results of the study indicate the importance of three mechanisms in the absorption of gaseous NO/sub x/ (NO/sub 2/ + 2N/sub 2/O4 + NO) compounds: (1) the absorption of NO/sub 2//sup */ (NO/sub 2/ + 2N/sub 2/O4) which results in production of liquid HNO/sub 3/ and HNO/sub 2/; (2) the dissociation of the liquid HNO/sub 2/ into HNO/sub 3/ and gaseous NO; and (3) the gas-phase oxidation of NO to NO/sub 2/. A mathematical model based on these mechanisms was developed and is presented to explain the observed phenomena.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6709104
- Report Number(s):
- CONF-780819-16; TRN: 78-017056
- Resource Relation:
- Conference: 15. nuclear air cleaning conference, Boston, MA, USA, Aug 1978
- Country of Publication:
- United States
- Language:
- English
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