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沸腾焙烧炉是从硫铁矿制硫酸工艺中常用的一种主要设备,焙烧过程中产生含SO_2浓度很大的原料气(或称炉气),其离开沸腾焙烧炉时温度达800-900℃以上,为了保护旋风除尘器,或适应电除尘器的要求,将高温炉气通过合金钢制的冷却器,使温度下降到400℃左右,大量余热散向大气;同时,为冷却焙烧炉沸腾层,过去采用喷水冷却,还大量耗水。因此,沸腾焙烧炉的余热利用潜力很大。但是,沸腾焙烧炉的余热利用,在技术和经济上尚有不少问题值得探讨,尤以设计年产2万吨硫酸的小型制酸设备,其余热利用的可行性更需要研
Boiling roaster is a kind of main equipment which is commonly used in sulfuric acid production from pyrite. During the roasting process, raw material gas containing SO2 (or furnace gas) is generated. When it leaves boiling roasting furnace, the temperature reaches 800-900 ℃ , In order to protect the cyclone dust collector, or to meet the requirements of electrostatic precipitator, the high temperature furnace gas through the alloy steel cooler, the temperature dropped to about 400 ℃, a large amount of residual heat to the atmosphere; the same time, the cooling roaster boiling layer In the past using water spray cooling, but also a lot of water. Therefore, boiling roaster utilization of waste heat has great potential. However, there are still many technical and economic problems to be explored in the use of waste heat from boiling roaster. In particular, it is necessary to design a small acid plant capable of producing 20,000 t /