Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Current Status of Waste Heat Recovery System in Cement Industry

시멘트 산업 폐열 회수 현황

  • Young-Jin, Kim (Korea Institute of Limestone and Advanced Materials) ;
  • Jun-Hyung, Seo (Korea Institute of Limestone and Advanced Materials) ;
  • Yang-Soo, Kim (Korea Institute of Limestone and Advanced Materials) ;
  • Seok-Je, Kwon (Korea Institute of Limestone and Advanced Materials) ;
  • Kye-Hong, Cho (Korea Institute of Limestone and Advanced Materials) ;
  • Jin-Sang, Cho (Korea Institute of Limestone and Advanced Materials)
  • 김영진 (한국석회석신소재연구소) ;
  • 서준형 (한국석회석신소재연구소) ;
  • 김양수 (한국석회석신소재연구소) ;
  • 권석제 (한국석회석신소재연구소) ;
  • 조계홍 (한국석회석신소재연구소) ;
  • 조진상 (한국석회석신소재연구소)
  • Received : 2022.11.17
  • Accepted : 2022.11.25
  • Published : 2022.12.31
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Abstract

The cement industry, which is an energy-intensive and high carbon dioxide emission industry, requires strategy for carbon neutrality and sustainable development. Most domestic cement companies are generating electricity by waste heat recovery system to improve energy efficiency during cement processes; however, few studies exist on recycling of energy related to this. Certain countries with high cement production researched on modifying the conventional waste heat recovery system to maximize waste heat recovery using various methods such as applying the Rankine cycle depending on the temperature, comparing working fluids, applying two or more Rankine cycles, and combining with other industries. In this study, we reviewed the research direction for energy efficiency improvement by summarizing waste heat recovery and utilization methods in the domestic and overseas cement industries.

이산화탄소 배출량 및 에너지 사용이 많은 시멘트 산업은 탄소중립 실현 및 지속적인 발전을 위한 전략이 필요하다. 에너지 효율 향상을 위해 국내 대부분의 시멘트 업체에서 폐열 회수 시스템을 구축하여 전력을 생산하고 있으나, 이와 관련된 에너지 재활용 연구는 거의 없는 실정이다. 시멘트 생산이 많은 국가에서는 기존의 폐열 회수 시스템을 보완하기 위해 온도에 따라 적용하는 랭킨사이클 변경, 작동유체 비교, 2단 이상의 랭킨 사이클 적용 및 타 산업과의 연계 등을 통해 폐열 회수를 극대화하기 위한 연구를 수행하는 것으로 확인되었다. 본 연구에서는 국내외 시멘트 산업에서의 폐열 회수 및 활용에 대해 정리하여 에너지 효율 향상을 위해 필요한 연구 방향을 도출하고자 하였다.

Keywords

Acknowledgement

본 연구는 산업통상자원부(MOTIE)와 한국에너지기술평가원(KETEP)의 지원을 받아 수행한 연구 과제입니다(No. 20212010200100).

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