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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received August 1, 2016
Accepted October 30, 2016

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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HCl removal characteristics of calcium hydroxide at the dry-type sorbent reaction accelerator using municipal waste incinerator flue gas at a real site

Kwang-Deuk Kim Seong-Min Jeon Naim Hasolli Kang-San Lee Jae-Rang Lee Jae-Won Han¹ Hee Taik Kim^1† Young-Ok Park^†

Solar Thermal Laboratory and Clean Fuel Laboratory, Korea Institute of Energy Research, Daejeon 34129, Korea ¹Department of Fusion Chemical Engineering, Hanyang University, Ansan 15588, Korea

Korean Journal of Chemical Engineering, March 2017, 34(3), 747-756(10), 10.1007/s11814-016-0306-0

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Abstract

A dry-type reactor was used to reduce the HCl emitted from a municipal waste incinerator. A real-scale reactor was installed downstream of the existing semi-dry reactor (SDR) as part of D local incineration plant, whose HCl removal efficiency was investigated by applying calcium hydroxide (Ca(OH)2). A test dry-type sorbent reaction accelerator (SRx) was designed, and the stoichiometric ratio (SR) of the sorbent and the secondary reaction characteristics of unreacted Ca(OH)2 in a baghouse were analyzed. For the results, the SRx showed higher HCl removal efficiency and more economic benefits than the other existing flue gas treatment facilities of the incinerator plant. Furthermore, the highest reduction efficiency of HCl was obtained when the differential pressure in the baghouse was maintained at 150mmH2O. This is because as the unreacted sorbent attached to the filter surface layer became thicker and the secondary reaction of the HCl removal increased.

Keywords

Sorbent Reaction Accelerator (SRx) Stoichiometric Ratio HCl Ca(OH)2 Baghouse

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