Scaling Mechanism of Heat Exchanger for Spent Sulfuric Acid Concentrating in Titania Production

Li Fen Yang; Bin Xiang; Liang Hui Ke

doi:10.4028/www.scientific.net/AMR.560-561.678

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 560-561Scaling Mechanism of Heat Exchanger for Spent...

Scaling Mechanism of Heat Exchanger for Spent Sulfuric Acid Concentrating in Titania Production

Abstract:

The component and contents of scale sample on the graphite heat exchanger were analyzed by ED-XRF( Energy dispersive X-ray fluorescence spectrometer) and the component and contents of spent acid unconcentrated and concentrated were measured by AAS(atomic absorption spectrometer).In addition, the phase structure of scale sample was tested by XRD(X-ray diffraction) and the simulation experiment of spent acid concentrating was carried out to study the scaling mechanism in the laboratory. The results show that the main components of scale were Ca, Ti and Fe. The scaling might be induced by settlement of Ti oxide, and then Ca and Fe precipitate rapidly.

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Periodical:

Advanced Materials Research (Volumes 560-561)

Pages:

678-681

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.560-561.678

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Online since:

August 2012

Authors:

Li Fen Yang, Bin Xiang, Liang Hui Ke

Keywords:

Deposition, Scaling Mechanism, Spent Acid Concentration

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