Blast furnace feedstock and coke oven chemical feedstock

Comparing different syngas for blast furnace ironmaking by using the extended operating line methodology

“…) due to dissociation, sensible heat, reverse water-gas shift of the H 2 , incomplete combustion with the O 2 , and transfer of S to the slag, kcal/mol j q k heat absorbed at T R by the total H 2 in the furnace when considering that it is completely converted to H 2 O through the reverse water-gas shift reaction, kcal/mol H2 q mid energy consumption to heat the shaft injection to T R , kcal/ mol mid q Mn heat absorbed at T R by the reaction C + MnO→CO + Mn, kcal/mol O q P heat absorbed at T R by the reaction1/5P number of moles of CO produced via the direct reduction of Non-steel sectors, such as plastic consumers, are also an important sources of syngas for iron-making (in this case, the syngas would not be CO 2 -neutral). As occurred in the case of biomass, the utilization of waste plastic in ironmaking has been usually proposed in literature as a pulverized solid fuel injection [19][20][21], instead of as syngas injection. Nevertheless, waste plastic can be gasified to generate syngas and partially substitute coke and pulverized coal.…”

Wet-mechanical processing of a plastic-rich two-dimensional-fraction from mixed wastes for chemical recycling

“…(b) Chemical or feedstock recycling (Bauer and Lehner, 2013; Garforth et al, 2004; Ignatyev et al, 2014; Nomura, 2020; Pohjakallio and Vuorinen, 2020; Ragaert et al, 2017; Soto et al, 2018): this type of recycling has a high potential for heterogeneous and contaminated plastic waste material if more intensive separation and processing than in case of mechanical recycling is neither economically nor technically feasible. A dry-mechanical pre-treatment of input materials is also necessary for chemical recycling.…”

“…Other important processes are pyrolysis, hydrogenation, gasification, and substitute reducing agents in the blast furnace process. The strict quality requirements for the input material are shown in Table 1, for example, for thermochemical conversion (ReOil-process) (Lechleitner et al, 2019) and the use as a reducing agent in the blast furnace process (Nomura, 2020).…”