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讨论了红外热像仪对裂解分馏塔底积焦、醋酸乙醇装置衬里损坏状况、电气设备热故障、裂解炉管热斑的测试方法及其热像特征，介绍了各种设备测试条件下标算发射率的方法，并对测试精度进行了探讨。
The thermal imaging features of pyrolysis and fractionation tower bottom focusing, damage of lining of acetic acid ethanol plant, thermal failure of electrical equipment and heat spot of cracked furnace tube are discussed. Emissivity method, and the test accuracy is discussed.