矿热炉电除尘器壁板加热盘管计算与分析

CALCULATION AND ANALYSIS OF WALL PANEL HATING COIL OF ELECTRIC DUST COLLECTOR IN SUBM ERGED ARC FURNACE

矿热炉是生产铁合金和电石的主要设备,在运行过程中会产生大量烟气通过电除尘来净化处理,然后直接经过引风机烟囱排入大气中.由于矿热炉烟气具有少量的腐蚀性气体,因此电除尘器运行时,需要对电除尘器壁板进行加热及保温,采用另外一台电除尘器净化后的烟气加热电除尘器壁板,可以有效防止电除尘器壁板结露与腐蚀等问题,而加热采用加热盘管可以有效解决.通过对管道、热量的计算,确定合适的加热盘管尺寸及布置型式.使用净化后的烟气为电除尘器壁板的加热方式,既提高了能源的利用价值,又有效解决了能源浪费及污染等问题.

Submerged arc furnace is the main equipment for producing ferroalloy and calcium carbide.During the op-eration of furnace,a large amount of flue gas is produced,which will be purified by electric dust collector.The puri-fied flue gas is discharged directly into the atmosphere through the induced draft fan chimney.As the flue gas of sub-merged arc furnace contains slight corrosive gas,it is necessary to make heating and thermal insulation for wall panel of electric dust collector when the electric dust collector of submerged arc furnace is running.The wall panel of electric dust collector is heated and purified by the flue gas of another electric dust collector,which can effectively prevent the problems such as the condensation and corrosion on the wall panel of the electric dust collector.The utilization of the heating coil for the wall panel of the electric dust collector can effectively solve the problem.Through the calculation of pipeline and heat,the appropriate heating coil size and layout type are determined.The purified flue gas is used as the heating mode of the wall panel of the electric dust collector,which not only improves the utilization value of energy,but also effectively solves the problems of energy waste and pollution.