Reduction of hydrogen chloride in the furnace of vertical type incinerator = Reduction of hydrogen chloride in the furnace of vertical type incinerator
저자
( In-hee Hwang ) ; ( Yuto Futagami ) ; ( Takayuki Matsuo ) ; ( Yasumasa Tojo ) ; ( Toshihiko Matsuto ) 연구자관계분석
발행기관
학술지명
권호사항
발행연도
2019
작성언어
-KDC
500
자료형태
학술저널
수록면
281-282(2쪽)
제공처
Hydrogen chloride (HCl) in flue gas of municipal solid waste incinerator (MSWI) is generally removed by the in-duct injection of powdered slaked lime (Ca(OH)<sub>2</sub>) before the bag filter (BF). According to the survey of operational characteristics of vertical type incinerator in 2016, the HCl concentration was considerably reduced before the application of dry scrubbing. Vertical type incinerator is a new type one which performs efficient incineration with forming pyrolysis, gasification, and carbon combustion zones vertically in thick waste layer. There is a possibility that HCl gas is reduced in the thick waste layer due to alkali and alkaline earth metals during long retention time. If this assumption is correct, chlorine (Cl) amount is relatively higher in bottom ash (BA) obtained from vertical type incinerator. In this study, the Cl distribution amount to BA, fly ash (FA), and cleaned flue gas as well as the form of Cl compound in ash were investigated to clarify the reduction phenomenon of HCl in the furnace of vertical type incinerator.
Questionnaire survey and ash (BA and FA) sampling were conducted for twenty-four MSWI facilities to determine the Cl distribution amount depending on the types of furnaces. Annual amounts of waste incinerated, chemical for ash stabilization, BA and FA discharged were questioned. Flow rate and HCl concentration of flue gas at the outlet of BF were also investigated. BA and FA samples were provided to analyze total Cl content and the form of Cl and Ca compounds. Total Cl content was measured by the modified JIS method (JIS Z 7302-6). XRD analysis and leaching test were performed to know the form of Cl and Ca compounds. Leaching test was carried out under the conditions of LS=10, 200rpm, and 6 h. Cl concentration in eluent was measured by anion chromatography. Na, K, and Ca concentrations were measured by atomic absorption spectroscopy.
In the vertical type of incinerator, HCl gas was expected to be captured by alkali and alkaline earth metals while it was passing the thick waste layer. However, there was no significant difference in the Cl distribution amount in BA depending on the types of incinerators as shown in Fig. 1. In order to confirm the possibility that HCl was captured by dust in flue gas at the furnace, dust sample was sampled from the duct before the spray of slaked lime. HCl gas concentration in combustion and post-combustion chamber of vertical type incinerator (V-1 facility) were also measured respectively. As a result, it was revealed that more than 30% of Cl contained in FA was derived from dust of furnace. In addition, it was found that HCl concentration was greatly reduced in the post-combustion chamber. From these results, HCl was considered to be captured by CaO which was contained more than 10wt% in dust at the post-combustion chamber of vertical type of incinerator. This HCl reduction on the furnace is an important phenomenon that leads to the reduction of the amount of alkali chemical required for exhaust gas treatment. It is necessary to verify whether the same phenomenon occurs in conventional stocker type incinerator. In our future study, the analysis of flue gas and dust will be performed by comparison with conventional stoker type incinerator to elucidate the mechanism of HCl reduction in the furnace.
서지정보 내보내기(Export)
닫기소장기관 정보
닫기권호소장정보
닫기오류접수
닫기오류 접수 확인
닫기음성서비스 신청
닫기음성서비스 신청 확인
닫기이용약관
닫기학술연구정보서비스 이용약관 (2017년 1월 1일 ~ 현재 적용)
학술연구정보서비스(이하 RISS)는 정보주체의 자유와 권리 보호를 위해 「개인정보 보호법」 및 관계 법령이 정한 바를 준수하여, 적법하게 개인정보를 처리하고 안전하게 관리하고 있습니다. 이에 「개인정보 보호법」 제30조에 따라 정보주체에게 개인정보 처리에 관한 절차 및 기준을 안내하고, 이와 관련한 고충을 신속하고 원활하게 처리할 수 있도록 하기 위하여 다음과 같이 개인정보 처리방침을 수립·공개합니다.
주요 개인정보 처리 표시(라벨링)
목 차
3년
또는 회원탈퇴시까지5년
(「전자상거래 등에서의 소비자보호에 관한3년
(「전자상거래 등에서의 소비자보호에 관한2년
이상(개인정보보호위원회 : 개인정보의 안전성 확보조치 기준)개인정보파일의 명칭 | 운영근거 / 처리목적 | 개인정보파일에 기록되는 개인정보의 항목 | 보유기간 | |
---|---|---|---|---|
학술연구정보서비스 이용자 가입정보 파일 | 한국교육학술정보원법 | 필수 | ID, 비밀번호, 성명, 생년월일, 신분(직업구분), 이메일, 소속분야, 웹진메일 수신동의 여부 | 3년 또는 탈퇴시 |
선택 | 소속기관명, 소속도서관명, 학과/부서명, 학번/직원번호, 휴대전화, 주소 |
구분 | 담당자 | 연락처 |
---|---|---|
KERIS 개인정보 보호책임자 | 정보보호본부 김태우 | - 이메일 : lsy@keris.or.kr - 전화번호 : 053-714-0439 - 팩스번호 : 053-714-0195 |
KERIS 개인정보 보호담당자 | 개인정보보호부 이상엽 | |
RISS 개인정보 보호책임자 | 대학학술본부 장금연 | - 이메일 : giltizen@keris.or.kr - 전화번호 : 053-714-0149 - 팩스번호 : 053-714-0194 |
RISS 개인정보 보호담당자 | 학술진흥부 길원진 |
자동로그아웃 안내
닫기인증오류 안내
닫기귀하께서는 휴면계정 전환 후 1년동안 회원정보 수집 및 이용에 대한
재동의를 하지 않으신 관계로 개인정보가 삭제되었습니다.
(참조 : RISS 이용약관 및 개인정보처리방침)
신규회원으로 가입하여 이용 부탁 드리며, 추가 문의는 고객센터로 연락 바랍니다.
- 기존 아이디 재사용 불가
휴면계정 안내
RISS는 [표준개인정보 보호지침]에 따라 2년을 주기로 개인정보 수집·이용에 관하여 (재)동의를 받고 있으며, (재)동의를 하지 않을 경우, 휴면계정으로 전환됩니다.
(※ 휴면계정은 원문이용 및 복사/대출 서비스를 이용할 수 없습니다.)
휴면계정으로 전환된 후 1년간 회원정보 수집·이용에 대한 재동의를 하지 않을 경우, RISS에서 자동탈퇴 및 개인정보가 삭제처리 됩니다.
고객센터 1599-3122
ARS번호+1번(회원가입 및 정보수정)