Top-gas cleaning at blast furnaces: comparison of wet and dry systems

Christof Lanzerstorfer, Stefan Grill, Andreas Steinwandterx

Research output: Chapter in Book/Report/Conference proceedingsConference contribution

Abstract

Efficient removal of the dust from blast furnace top-gas is essential for energy recovery in a top-gas recovery turbine. In most blast furnaces de-dusting is achieved by two-staged cleaning systems, comprising of a first separator – a dust catcher or a cyclone - and a second cleaning stage which is usually a scrubber. In a few blast furnaces dry cleaning systems have been realized in the past using a reverse air filter or an electrostatic precipitator. In recent years there has been a shift, especially in China, to totally dry cleaning systems using bag filters with pulse-jet cleaning systems. In this article the advantages and disadvantages of such dry de-dusting systems are discussed.
Original languageEnglish
Title of host publicationProceedings of the 49th International October Conference on Mining and Metallurgy
Pages119-123
Publication statusPublished - 2017
EventProceedings of the 49th International October Conference on Mining and Metallurgy - Bor Lake, Serbia
Duration: 18 Oct 201720 Oct 2017

Conference

ConferenceProceedings of the 49th International October Conference on Mining and Metallurgy
CountrySerbia
CityBor Lake
Period18.10.201720.10.2017

Keywords

  • blast furnace
  • top-gas cleaning
  • dry de-dusting

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