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一、前言冶金行业大量消耗能源,因此是国家节能的重点。利用热风炉的烟气余热提高热风温度是节焦的重要途径。近两年,由于炼铁厂、钢铁设计院和制造厂的努力,已有两台卧式回转式空气预热器(以下简称预热器)应用于热风炉烟气余热回收系统(以下简称回收系统),其中杭钢255米~3高炉回收系统采用WHK—3.2型预热器,使用良好,取得了满意的经济效果,于今年六月通过了技术鉴定。
I. Introduction The metallurgical industry consumes a large amount of energy and is therefore the focus of the country’s energy conservation. The use of hot stove flue gas waste heat to increase hot air temperature is an important way section coke. In the recent two years, due to the efforts of ironworks, steel design institutes and manufacturing plants, two horizontal rotary air preheaters (hereinafter referred to as preheaters) have been used in the waste heat recovery system of hot blast furnace flue gas (hereinafter referred to as the recovery System), of which, Hangzhou Iron and Steel 255 m ~ 3 blast furnace recovery system using WHK-3.2-type preheater, the use of good, and achieved satisfactory economic results, in June this year, passed the technical appraisal.