饱和蒸汽发电技术在废热利用系统中的应用

介绍饱和蒸汽发电技术在金隆闪速炉-转炉铜冶炼装置废热利用系统中的应用。原设计采用过热蒸汽发电,背压蒸汽减温减压后供0．6 MPa蒸汽管网,多余放空,另用燃煤锅炉生产1．6MPa蒸汽供生产用。冶炼装置废热未得到很好的利用,装置运行费用很高。改造后采用KKK单级饱和蒸汽发电机组发电,由1台闪速炉和 3台转炉废热锅炉产生的饱和蒸汽(3．8MPa)一部分用于发电,另一部分减压后供1．6 MPa蒸汽管网,出发电机组的背压蒸汽供0．6 MPa蒸汽管网。该系统废热利用合理,不仅满足了全厂蒸汽需要,而且创造了较好的经济效益。

Application of power generation technology with saturated steam in waste heat utilization system

Application of power generation technology with saturated steam in waste heat utilization system of Jin-glong' s flush furnace-converter copper smelting plant is described. In original design, power was generated with supperheat steam and backpressure steam was fed into 0. 6 MPa steam net after temperature and pressure reduction. Another coal-fired boiler was installed to raise 1. 6 MPa steam for process use. The waste heat from smelters was not utilized fully and operation cost was high. In transformation of the system, a KKK single-stage power generator driven by saturated steam was installed. A portion of saturated steam at 3. 8 MPa from one flush smelting waste heat boiler and three converter waste heat boilers was fed into generator with the backpressure steam supplied to 0. 6 MPa steam net and the balance was supplied, after pressure reduction, to 1. 6 MPa steam net. Waste heat was reasonably utilized to meet process demand for steam with good benefits.