Multi-type energy-carrying gas coupled injection equipment system on charge surface of sinter
Hydrogen-rich gas injection technology is an advanced technology which can save sinter fuel,reduce pollu-tion emission and improve yield and quality of sinter.However,this technology is hard to couple with energy-carry-ing gas such as hot wind,flue gas and steam in the process of promotion and application.Based on this difficulty,numerical model was built and flow field of traditional structure was analyzed.The primary reason why these gas could not be coupled was turbulence of flow field caused by unevenness inlet air at the side of hot wind cover or flue gas cover.Core equipment were developed,such as gradual-enlarged gas inlet,matrix multi cell board,draft tube,reflected pipe bundle and so on,which formed a set of multi-type energy-carrying gas coupled injection system on charge surface of sinter.These equipments were applied in a domestic 360 m2 sinter plant and got good profit,the yield improved 8 t/h,energy consumption reduced 2.5 kg/t,the injection uniformity of hydrogen-rich gas doubled,ignition rate in fuel gas cover reduced 90％,escape rate at top of fuel gas reduced 95％,and the cycle for continu-ously steadily production extend obviously.Developing of these equipments broaden the application range of hydro-gen-rich gas injection technology,it also promotes high-efficiency and low-carbon transformation of sinter process.
sinterhydrogen-rich gasmulti-type energy-carrying gas coupled injectionequipment systemhigh-ef-ficiency and low-carbon
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