NO Removal from Simulated Flue Gas with a NaClO 2 Mist Generated Using the Ultrasonic Atomization Method

Zhitao Han, Dongsheng Zhao, Dekang Zheng, Xinxiang Pan, Bojun Liu, Zhiwei Han, Yu Gao, Junming Wang and Zhijun Yan
Additional contact information
Zhitao Han: Marine Engineering College, Dalian Maritime University, No.1, Linghai Road, Dalian 116026, China
Dongsheng Zhao: Marine Engineering College, Dalian Maritime University, No.1, Linghai Road, Dalian 116026, China
Dekang Zheng: Marine Engineering College, Dalian Maritime University, No.1, Linghai Road, Dalian 116026, China
Xinxiang Pan: Marine Engineering College, Dalian Maritime University, No.1, Linghai Road, Dalian 116026, China
Bojun Liu: Marine Engineering College, Dalian Maritime University, No.1, Linghai Road, Dalian 116026, China
Zhiwei Han: Marine Engineering College, Dalian Maritime University, No.1, Linghai Road, Dalian 116026, China
Yu Gao: Marine Engineering College, Dalian Maritime University, No.1, Linghai Road, Dalian 116026, China
Junming Wang: Marine Engineering College, Dalian Maritime University, No.1, Linghai Road, Dalian 116026, China
Zhijun Yan: Marine Engineering College, Dalian Maritime University, No.1, Linghai Road, Dalian 116026, China

Energies, 2018, vol. 11, issue 5, 1-15

Abstract: In order to enhance the mass transfer efficiency between gas–liquid interfaces, NaClO 2 mist generated by an ultrasonic humidifier was used to remove NO from simulated flue gas. The effects of some key parameters (the gas flow rate, the NaClO 2 concentration in the solution, the inlet NO concentration, the NaClO 2 solution pH) on NO removal efficiency were investigated preliminarily. The results showed that NaClO 2 mist could oxidize NO with a much higher efficiency compared with other mists containing either NaClO or H 2 O 2 as oxidants. With an increase in the gas flow rate from 1.5 to 3.0 L·min −1 , the atomizing rate of the NaClO 2 solution increased almost linearly from 0.38 to 0.85 mL·min −1 . When the gas flow rate was 2.0 L·min −1 , a complete removal of NO had been reached. NO removal efficiency increased obviously with an increase in the NaClO 2 concentration in the solution. With an increase in the inlet NO concentration, the ratio of NO in the flue gas and NaClO 2 in the mist increased almost linearly. Furthermore, the NaClO 2 mist exhibited a relatively stable and high NO x removal efficiency in a wide pH range (4–11) of NaClO 2 solutions. The reason for the high NO removal efficiency was mainly ascribed to both the strong oxidative ability of NaClO 2 and the improved mass transfer at the gas-liquid interface.

Keywords: nitric oxide; ultrasonic atomization; sodium chlorite; mist (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/11/5/1043/pdf (application/pdf)
https://www.mdpi.com/1996-1073/11/5/1043/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:11:y:2018:i:5:p:1043-:d:142994

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().