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国外六十年代,已开始试验未燃法回收利用氧气转炉烟气,特别是日本、西德和法国,为了利用能源和解决环境污染,大力发展回收含一氧化碳浓度高的烟气工艺,用作燃料或化工原料。上钢一厂30吨氧气转炉烟气净化回收工程是我国第一座投入正常运转的烟气回收利用装置,既能消除环境污染,又变废为宝综合利用。据统计每炼一吨钢,即可获得含CO60％的转炉煤气60m~3和10kgFeO粉尘,同时在烟气冷却降温过程中,利用余热产生90kg蒸汽。转炉烟气净化回收系统的工艺流程如图示。30吨转炉烟气净化采用三文一箱湿法高压流程,最大处理烟气量按17000～20000Nm~3/h计,炼钢产生的高温浓尘多变的炉气从炉口逸出后,经活动烟罩进入汽化冷却烟道内进行热交换,使温度降到1000℃左右,进入二级串联的内喷文氏管净化,第
Foreign 60 years, has begun to test the unburned recovery of oxygen converter flue gas, especially Japan, West Germany and France, in order to use energy and solve environmental pollution, vigorously develop the recovery of flue gas containing high concentrations of carbon monoxide for fuels Or chemical raw materials. On the first steel plant 30 tons of oxygen converter flue gas purification project is the first put into normal operation of flue gas recovery and use of equipment, both to eliminate environmental pollution, and turn waste into comprehensive utilization. According to the statistics, for every ton of steel refining, 60m ~ 3 and 10kgFeO dust containing 60% ~ 3% of converter gas can be obtained. At the same time, 90kg of steam is generated by using waste heat during cooling and cooling flue gas. Converter flue gas purification system recovery process as shown. 30 tons of converter flue gas purification using three text box wet high pressure process, the maximum amount of flue gas treatment by 17000 ~ 20000Nm ~ 3 / h meter, the steel produced high temperature thick dust changeable furnace gas escaping from the mouth, the Activities of the hood into the vaporization cooling flue heat exchange, the temperature dropped to about 1000 ℃, into the two cascade venturi tube purification, the first