공업화학 (Applied Chemistry for Engineering)

  • 제32권6호
  • /
  • Pages.695-699
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  • 2021
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  • 1225-0112(pISSN)
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  • 2288-4505(eISSN)
한국공업화학회 (The Korean Society of Industrial and Engineering Chemistry)
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노후 특수·화물 차량 PM/NOx 저감을 위한 SDPF 촉매 및 코팅 기술 연구

A Study on Selective Catalytic Reduction on Diesel Particulate Filter Catalyst and Coating Technology the Removal of Particulate Matters and NOx for Old Special Cargo Vehicles

  • 정관형 ((주)세라컴 기술연구소 촉매개발팀) ;
  • 서필원 ((주)세라컴 기술연구소 촉매개발팀) ;
  • 오형석 ((주)세라컴 기술연구소 촉매개발팀) ;
  • 김종국 ((주)세라컴 기술연구소 촉매개발팀) ;
  • 강소연 ((주)세라컴 기술연구소 촉매개발팀) ;
  • 강정호 (한국자동차연구원 파워트레인연구본부 동력성능연구센터) ;
  • 김현준 (한국자동차연구원 파워트레인연구본부 동력성능연구센터) ;
  • 신병선 ((주)세라컴 기술연구소 촉매개발팀)
  • Jeong, Kwanhyoung (Research & Development Department, Ceracomb Company, LTD.) ;
  • Seo, Philwon (Research & Development Department, Ceracomb Company, LTD.) ;
  • Oh, Hungsuk (Research & Development Department, Ceracomb Company, LTD.) ;
  • Kim, Jongkook (Research & Development Department, Ceracomb Company, LTD.) ;
  • Kang, Soyeon (Research & Development Department, Ceracomb Company, LTD.) ;
  • Kang, Jeongho (Powertrain Efficiency R&D Center, Korea Automotive Technology Institute) ;
  • Kim, Hyunjun (Powertrain Efficiency R&D Center, Korea Automotive Technology Institute) ;
  • Shin, Byeongseon (Research & Development Department, Ceracomb Company, LTD.)
  • 투고 : 2021.10.07
  • 심사 : 2021.11.17
  • 발행 : 2021.12.10
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초록

본 연구에서는, 노후된 엔진을 사용하는 트럭 및 특수차량에서 배출되는 NOx 및 PM을 동시에 제거하기 위해 SDPF 후처리 시스템 연구를 수행하였다. 우선, SDPF의 SCR 촉매를 선정하기 위해서, V/TiO2와 Cu-zeolite 촉매의 de-NOx 성능을 비교하였으며, SCR 촉매특성분석은 BET, XRD 및 NH3-TPD를 통해 분석하였다. 촉매 활성시험 결과, Cu-zeolite 촉매가 가장 우수한 내열성을 보여주었다. 최적의 SDPF 코팅을 위해서, 목표로 설정된 입자 크기에 맞추어 슬러리를 제조하였다. SCR 코팅량에 따른 SDPF의 코팅안정성과 배압 결과, SDPF 촉매를 로딩량별로 A, B, C 샘플을 제작하여 코팅안정성과 배압 및 de-NOx 성능을 비교한 결과 B 샘플에서에서 가장 우수한 결과를 보였다. 최적 SDPF 후처리시스템에 대해 엔진동력계 시험을 실시하였으며, 시험결과 Eu-5 규제를 만족하였다.

In this study, Selective Catalytic Reduction on Diesel Particulate Filter (SDPF) after-treatment system was introduced to simultaneously remove NOx and Particulate Matters (PM) emitted from trucks and special cargo vehicles using old engine. First, in order to select an Selective Catalytic Reduction (SCR) catalyst for SDPF, the de-NOx performance of V/TiO2 and Cu-Zeolite catalysts were compared, and the SCR catalyst characteristics were analyzed through Brunauer Emmett Teller (BET), X-ray Diffraction (XRD) and NH3-TPD (Temperature Programmed Desorption). From the activity test results, the Cu-zeolite catalyst showed the best thermal stability. For optimal coating of SDPF, slurry was prepared according to the target particle size. From the coating stability and back pressure test results of SDPF according to the amount of SCR coating, As a result of comparing coating stability, back pressure, and de-NOx performance by producing A, B, and C samples for each loading amount of the SDPF catalyst, the best results were found in the B sample. The engine dynamometer test was conducted for the optimal SDPF after-treatment system, and the test results satisfied Eu-5 regulations.

키워드

과제정보

본 연구는 산업통상자원부(MOTIE)의 재원으로 한국산업기술평가관리원(KEIT)의 지원을 받아 수행한 연구결과입니다. (No. 20009414)

참고문헌

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