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   Author  Topic: Dry process purification of converter gas  (Read 128 times)
qizhen0926
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Dry process purification of converter gas
« on: Mar 19th, 2018, 11:36pm »		 Quote Quote Modify Modify Remove Remove
The application prospect of the converter gas dry process (LT) purification recovery technology is broad: the metal iron and iron in the smoke and dust are about 13%, FeO accounts for about 68.4%, and Fe2O3 accounts for about 6.8%. Especially in the middle of converting the volume fraction of CO was higher than 80%, under normal circumstances, the volume fraction of CO converter gas components accounted for between 55% and 66%, when CO was 60%, the calorific value can reach 8MJ/m3, and each ton dust amount is 10 ~ 20kg/t. In the oxygen converter steelmaking with oxygen smelting process, the amount of flue gas, flue gas composition and temperature of flue gas with the smelting stage changes periodically. It can be seen that the content of CO in converter gas is very high, and the content of iron in the smoke and dust is very high, which has high recovery and utilization value.
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The general situation and development trend at home and abroad: at present, there are mainly 2 ways to clean and recycle oxygen converter steelmaking, one is gas wet process (OG) purification and recovery system, the other is gas dry process (LT) purification and recovery system. With the development of oxygen converter steelmaking, the steelmaking process is becoming more and more perfect, and the corresponding dust removal technology is constantly developing and perfecting.KCB55 Gear Oil Pump
The OG system is mainly composed of flue gas cooling, purification, gas recovery and sewage treatment. Nippon Steel and Kawasaki company in the last century 60s successfully developed OG converter gas purification and recovery technology. The flue gas enters the flue gas purification system by cooling flue, flue gas purification system includes 2 stage venturi tube, evaporator and water mist separator, flue gas by spraying treatment after removing dust in the smoke, smoke water after separation and concentration and dehydration of sludge to sintering plant as sintering raw material, purified by gas recycling.
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