Study on Reduction Unburned Carbon Contents in Low Quality Fly Ash from Vietnam

Keeseok Kim; Jaewon Lee; Dongwon Lee; Kyongnam Min

doi:10.7844/kirr.2020.29.2.37

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2020 Vol.29, Issue 2 Preview Page Next Page

Research Paper

Study on Reduction Unburned Carbon Contents in Low Quality Fly Ash from Vietnam 베트남 저품위 비산재의 미연탄소 함량 저감 연구

30 April 2020. pp. 37-47

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Abstract

According to Vietnam government establishes additional thermal power plant, processing the coal ash from power plant is urgent issue. This study targeted reducing unburned carbon contents in low quality fly ash to below 6% that according to international standards. As a result, the unburned carbon contents of low quality fly ash was high and irregular as 5.3~23.6%, and it was possible to reduce unburned cabon contents to under 6%, in case of unburned carbon contents below 9.8% ashes using air classification, in case of unburned carbon contents below 23.6% ashes using combined process composed of air classification and electrostatic separation.

Keywords

fly ash

coal ash

low quality

air classification

electrostatic separation

베트남은 화력발전을 중심으로 한 발전용량 확보 계획을 추진 중이며, 석탄화력발전소로부터 배출되는 석탄재의 대량처리 방안 확보가 시급한 실정이다. 이 연구는 베트남에서 발생하는 석탄재 중 미연탄소 함량이 높아 재활용이 어려운 저품위 비산재의 미연탄소 함량을 국제 비산재 활용기준인 6% 미만으로 낮추는 것을 목표로 하였다. 저품위 비산재를 배출하는 발전소의 비산재 품질을 조사한 결과, 비산재의 미연탄소 함량은 5.3~23.6%로 미연탄소 함량이 높고 불규칙하였다. 공기분급과 정전선별을 적용하여 비산재를 처리한 결과, 미연탄소 함량 9.8%까지는 분급 단일공정으로, 23.6%까지의 비산재는 분급과 정전선별로 구성된 복합공정으로 미연탄소 함량을 6% 미만으로 감소시킬 수 있었다.

키워드

비산재

석탄재

저품위

공기분급

정전선별

References

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Information

Publisher :The Korean Institute of Resources Recycling
Publisher(Ko) :한국자원리싸이클링학회
Journal Title :Journal of the Korean Institute of Resources Recycling
Journal Title(Ko) :자원리싸이클링
Volume : 29
No :2
Pages :37-47
Received Date : 2020-02-20
Revised Date : 2020-03-25
Accepted Date : 2020-04-01
DOI :https://doi.org/10.7844/kirr.2020.29.2.37

Resources Recycling 자원리싸이클링 ISSN:2765-3439(Print) 2765-3447(Online)

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