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论文类型：期刊论文

发表时间：2022-06-30

发表刊物：化工进展

卷号：32

期号：5

页面范围：1172-1176

ISSN号：1000-6613

摘要：The article studied on the ash deposits samples at different heat exchange locations in the waste liquid incineration HRSG of Refining & Chemical Company and analyzed the components of ash and depositional mechanism. Analytical techniques,such as rigaku X-ray Diffractometer system (XRD),Scanning Electron Microscope(SEM)and Energy Dispersive X-Ray Spectroscopy(EDX) had been applied to investigate elemental composition,morphology,and mineralogy,the characteristic temperature of ash fusion was tested by the Ash Fusion Determinator. The results showed that the main sediments in the high temperature entrance of HRSG were Na2SO4,NiO and Fe2.3Si0.7O4,the main sediments in the intermediate temperature entrance of HRSG were Na2Ni(SO4)2·4H2O,Na3Fe(SO4)3 and Na6Fe(SO4)4. This was mainly because sodium sulfate had the high temperature corrosion reaction with ferric oxide.

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