Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Development of Inorganic Sludge Drying System Technology Applied with Ejector by Air Velocity

이젝터를 적용한 무기성 슬러지 건조시스템 기술개발

  • Cho, En-man (Reentec engineering Ltd.) ;
  • Jeong, Won-hoon (Department of Automotive Engineering, Graduate School of Gyeongsang National University) ;
  • Kim, Dong-keon (Department of Automotive Engineering, Gyeongsang National University) ;
  • Kim, Bong-hwan (Department of Automotive Engineering, Gyeongsang National University)
  • 조은만 ((주) 리엔텍엔지니어링) ;
  • 정원훈 (경상국립대학교 일반대학원 자동차공학과) ;
  • 김동건 (경상국립대학교 자동차공학과) ;
  • 김봉환 (경상국립대학교 자동차공학과)
  • Received : 2022.06.13
  • Accepted : 2022.07.27
  • Published : 2022.09.30
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Abstract

The moisture content of many inorganic sludges is less than 70% during dewatering. Hence, a mono or piston pump cannot feed the sludge dryer. Thus, most inorganic sludge should be moved to a landfill or recycled directly without any reduction method. This development was invented to apply cyclone dryers using air and specially designed for the continuous injection of sludge sources by negative pressure and high air velocity for low moisture inorganic matter. Therefore, wastewater sludge and raw water treatment sludge discharged from various industrial fields might be settled by this development. The cyclone dryer was commercialized useful as moisture reduction equipment. This development was applied using a sludge injection system for sludge feeding and under the cooperation of ejector design computational fluid dynamics. Furthermore, this paper presented good ejector model results, blowing an airflow of 264 m3/min at an actual performance test.

Keywords

Acknowledgement

본 연구는 환경산업기술원의 녹색혁신기업 연구개발사업(2020003170003)의 일환으로 수행되었음

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