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A Study on Prevention of Fire Accidents by Splash Filling in the Filtration Process of Pharmaceutical Companies

제약회사 여과 공정중 스플래쉬 필링에 의한 화재사고 예방대책에 관한 연구

  • Kim, Sang Gil (Dept. of Safety Engineering, Korea National University of Trans) ;
  • Lee, Dae Joon (Dept. of Safety Engineering, Korea National University of Trans) ;
  • Yang, Seung Bok (Dept. of Safety Engineering, Korea National University of Trans) ;
  • Rhim, Jong Guk (Dept. of Safety Engineering, Korea National University of Trans)
  • 김상길 (한국교통대학교 안전공학과) ;
  • 이대준 (한국교통대학교 안전공학과) ;
  • 양승복 (한국교통대학교 안전공학과) ;
  • 임종국 (한국교통대학교 안전공학과)
  • Received : 2021.09.10
  • Accepted : 2021.12.10
  • Published : 2021.12.31

Abstract

Flammable substances are often present in the raw materials of pharmaceutical products manufactured by pharmaceutical companies. In this case, an excessive amount of flammable substances is added to make an intermediate, and flammable substances that do not participate in the reaction are removed through filtration and drying steps. In addition, the flammable liquid separated in the filtration process is accumulated in the form of splash filling in the filtrate container. In this case, vapor and mist of flammable liquid are generated, which lowers the lower limit of explosion and minimum ignition energy, and increases the risk of fire and explosion due to complex charging. In this study, by analyzing fire accidents that occurred during the recent filtration process of pharmaceutical companies, it is proposed to prevent static electricity accumulation by measures of nitrogen supply facilities, capacity improvement, conductive filter fabric and so on.

제약회사에서 제조하는 의약품의 원재료에 인화성물질이 종종 존재한다. 이런 경우 과량의 인화성 물질을 투입하여 중간체를 만들고 반응에 참여하지 않은 인화성물질을 여과 및 건조단계를 통하여 제거하는 공정을 거치게 된다. 또한, 여과 공정에서 분리된 인화성 액체가 여액받이 통에 스플래쉬 필링 형태로 쌓이게 된다. 이런 경우 인화성 액체의 증기 및 미스트가 생성되어 폭발 하한 값, 최소점화에너지가 더욱 낮아지게 되며 복합 대전이 발생하여 화재·폭발의 위험이 증대된다. 본 연구에서는 최근의 제약회사 여과공정 중 발생한 화재 사고를 분석하여, 화재 폭발 사고를 방지하기 위한 방안으로 질소 공급설비 설치, 용량 개선, 도전성 여과포 및 정전기 축적 방지대책 등을 제시하고자 한다.

Keywords

References

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