大中型硫酸装置转化升温设备的选择

Selection of heating equipment for startup of conversion section in medium to large-scale sulphuric acid plants

介绍硫酸生产中常用的三种转化升温方式:烟道气直接升温、燃烧炉配预热器间接升温及电炉升温,论述电炉升温的功率定额选定及影响因素。烟道气直接升温由于会危害催化剂故不提倡使用;电炉升温一次性投资较低、设备及操作简单、热效率高、可调节性强,如果电网供电不存在问题并且运行费用可以接受,建议在大中型硫酸装置中使用。

Three heating ways for startup of conversion section in sulphuric acid plants direct heating, indirect heating by furnace equipped with preheater and electric heater. are described, flue gas Determination of power rate and influencing factors are discussed. Flue gas direct heating is discouraged because of harm to catalyst. Heating by electric heater has advantages of low lump sum investment, simple equipment and operation, high thermal efficiency and good adjustability and is recommended for application in medium to large-scale sulphurie acid plants, should power supply is not a problem and operation cost is acceptable.