流化床富氧焚烧含油污泥技术经济性分析

介绍了流化床富氧焚烧含油污泥技术的流程和优势,计算了富氧焚烧含油污泥系统主要设备的电耗和技术经济指标。流化床富氧焚烧含油污泥技术可实现烟气及其他污染物零排放,产生的蒸汽可直接供应油田生产和生活使用,产生的液态CO2可直接用于油井驱油,烟气中的SO2和NOx可转化为硫酸和硝酸。采用日处理200 t含油污泥的流化床锅炉年处理含油污泥量约73 kt,每年减少排污费7 300万元;锅炉年产蒸汽量约177 kt,每年节约蒸汽费用1 380.6万元,合计每年节约成本8 680.6万元。回收得到质量分数为40%的稀硫酸5.56 t/d,质量分数为37%的硝酸0.708 t/d,年回收CO2约99 kt。

Technical and economic analysis of oxygen-enriched incineration of oily sludge in fluidized bed

The technical process and advantages of oxygen-enriched incineration of oily sludge in fluidized bed are introduced. The power consumption of main equipment and the technical and economic indexes of the oily sludge oxygen-enriched incineration system are calculated. By the technology of oxygen-enriched incineration oily sludge in fluidized bed,zero emission of flue gas and other pollutant can be achieved,the steam produced can be directly used for production and livelihood of oil field,the liquid CO₂ produced can be directly used for oil displacement,and SO₂ and NO_x in flue gas can be converted into sulfuric acid and nitric acid. Using a fluidized bed boiler with 200 t/d of daily disposal ability,73 kt of oily sludge is treated per year,so 73 million yuan of sewage charge can be saved per year;The steam output of the boiler is about 177 kt per year,so 13.806 million yuan of steam cost can be saved per year;Totally,86.806 million yuan of cost is saved per year. In addition,5.56 t sulfuric acid with 40% of mass fraction and 0.708 t nitric acid with 37% of mass fraction can be recovered per day,and 99 kt CO₂ can be recovered per year.