SUNConferences, 29th Annual Conference of SAIIE

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DEVELOPING A BY-PRODUCT GAS SIMULATION MODEL TO ESTIMATE SYSTEM IMPROVEMENT INITIATIVES IN IRON AND STEEL MANUFACTURING
Alexander Ludick, Wynand Johannes Jacobus Breytenbach, Johan Hendry Marais

Last modified: 2018-10-09

Abstract


High production costs and low steel demands recently placed the South African steelmaking industry under severe pressure. The industry is forced to evaluate and improve its current systems to improve profitability. The dated sector can relieve stress by implementing technologies of the present age. This paper proposes a simulation model that can be used to test system improvement initiatives on the gas network. The iron and steel making process produces combustible gases. These gases are recovered as by-products and used as fuel gas in combination with natural gas and Heavy Fuel Oil (HFO). By-product gases are used to generate heat typically for furnaces or to generate additional electricity through an on-site power generation plant. This gas distribution network is kept safe by flaring excess by-product gas. The proposed simulation model was verified on a case study highlighting the difficulties in predicting by-product gas behaviour as well as the benefit that a gas distribution simulation model can have.


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