BLOCK-TYPE PLATE HEAT EXCHANGER WITH ANTI-FOULING PROPERTIES

摘要

An block-type plate that has a stack of heat transfer plates which includes a first heat transfer plate and a second heat transfer plate. At least a part of each of the first heat transfer plate and the second heat transfer plate comprises a coating that i) has a layer thickness of 1-30 μm, ii) is prepared by sol-gel processing, iii) comprises silicon oxide (SiOx) having an atomic ratio of O/Si>1, and iv) comprises ≧10 atomic percent carbon (C).

主权项

1. A plate heat exchanger comprising:
a top head, a bottom head and four side panels that are bolted together with a set of corner girders to form a sealed enclosure, and a stack of heat transfer plates that is arranged in the sealed enclosure, the stack of heat transfer plates comprising: pairs of heat transfer plates that are stacked such that a flow path for a first fluid is formed between the stacked pairs of heat transfer plates, wherein a pair of the stacked pairs of heat transfer plates comprises a first heat transfer plate and a second heat transfer plate that are joined such that a flow path for a second fluid is formed between the first and second heat transfer plates, the first heat transfer plate and the second heat transfer plate comprising a coating that has a layer thickness of 1-30 μm; is prepared by sol-gel processing; comprises silicon oxide (SiOx) having an atomic ratio of O/Si>1; and comprises ≧5 atomic percent carbon (C).