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一、顶吹氧气转炉炉气回收的原理(一)回收转炉炉气的意义:在转炉里,生铁中的碳元素被吹入的氧气氧化为CO和少量的CO_2。这些气体离开钢液自炉口喷出,成为转炉炉气。炉气中CO-般占80%左右,其余大部分为CO_2。炉气的发热值约在2500大卡/标米~3左右,是优良的气体燃料,也是化学合成用的原料。每吨生铁在吹炼过程中产生的炉气量,取决于炼钢原料(生铁和其他炉料)中碳的含量和所炼钢种。大约每吨生铁可产生60～80标米~3的炉气。一座100吨的转炉,每炼一炉钢可获得6000～8000标米~3的转炉气,相当于15×10~6～
First, the principle of top-blown oxygen converter gas recovery (A) the significance of recovery of converter gas: In the converter, the oxygen in the pig iron in the carbon element is blown into CO and a small amount of CO_2. The gas leaves the molten steel to exit the furnace mouth and becomes the converter furnace gas. CO-like furnace gas accounts for about 80%, most of the remaining CO_2. Furnace gas heating value of about 2500 kcal / standard meter ~ 3 or so, is an excellent gas fuel, but also the chemical synthesis of raw materials. The amount of gas produced per tonne of pig iron during blowing depends on the amount of carbon in the steelmaking feedstock (pig iron and other charge) and on the type of steel being made. About 60 to 80 standard cubic meters per tonne of pig iron can be produced. A 100-ton converter, each refining a furnace steel can be obtained 6000 ~ 8000 standard cubic meters of converter gas, equivalent to 15 × 10 ~ 6 ~