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50’Sub-SuperCritical water(SCW) group con'd: 8
♛SubCritical Water
♛SubCritical Water:Generally bulk of this tech can be categorized as
a-Similar temperature range with slightly lower pressure(eg 250-450°C,
180-200bar) as SuperCritical: basically mostly same effects(few
differences are electroconductive, some salts precipitate etc) but takes
longer time, with lower cost material can be used for device(less super
corrosive oxidation power) or
b- Lower temperature with much lower pressure (180-250°C, 20-60bar):
basically same effect with additional further time consuming, often cross
over with following section “51’SuperHeated Steam”, This presentation
generally labels methods using further lower temperature with similar to
ambient pressure as Hydrolysis(often 100-230°C, 1-5bar) process.、
Also note there are unclear differentiation used by the industry
between Low temp Low pressure SubCritical water with
51’SuperHeated Steam(used as open ambient pressure or close to it
with usually 110-250°C(depends on application temperature goes up to
800°C+, but it could be called SuperCritical Water also), or term
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Hydrothermal treatment can refer to all of 50’& 51’tech、