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PP-III-74USE OF NATURAL GAS CONVERSION FOR POWEREFFECTIVENESS INCREASE OF BLAST-FURNACE PRODUCTIONTomash M.A., Sushchenko A.V.MSc, PSTU, Е-mail: syncma@mvs.net.uaPh.D, associate professor PSTU, Е-mail: sushchenko_a_v@pstu.eduBlast-furnace process remains the most economical in comparison with otherknown ways of iron reduction melting. The heat consumption for 1 ton of pig iron inblast furnace is 25 – 80 % lower than in cokeless processes of pig-iron melting, suchas "Corex" and "Romelt".One of the most important indicators of energy efficiency at the metallurgicalworks is metallurgical coke consumption in blast furnaces. At the best steelcompanies in the world (Japan, China and others), the coke consumption is 260 -280 kg per ton of pig iron. In the European countries the average rate of cokeconsumption is 350 - 360 kg per ton of pig iron [1]. Ukraine lags behind significantly;the best up-to-date figure is 420 - 440 kg per ton of pig iron. At the majority ofUkrainian metallurgical works the average rate of coke consumption is 490 - 510 kgper ton of pig iron. And consequently, the development of measures for reduction ofpower inputs in blast-furnace production is one of the most important tasks of thedomestic steel industry.One of the effective ways to reduce the consumption reduction of thermal energyto the pig-iron melting in a blast-furnace is use of top gas chemical energy in blastfurnaceprocess. We suggest using the blast furnace gas for natural gas conversionand obtaining a reducing gas. It is shown that of all types of natural gas conversion:steam, oxygen, carbon dioxide, steam conversion is the most effective for theconditions of the blast furnace. The advantage of this method is the large volume ofthis reducing gas, the shortcoming of this method is the need for additional heat forthe reaction. For steam conversion of natural gas it is better to use continuouslyworking converter which avoids contact of sulfur compounds with nickel catalyst.We suggest a technological scheme of the blast furnace with enter of pulverizedcoal feed (PCF) into the furnace and hot reducing gases (HRG) to the bottom of theblast furnace stack. After leaving the blast furnace top gas passes normal three-steppurification and enters the collector. Part of the top gas is taken away for nozzle578