Four Levels of Clean, Low cost, Forgotten Water Technologies for... Four Levels of Clean, Low cost, Forgotten Water.. | Page 261

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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 Hydrothermal treatment
can refer to all of 50’& 51’tech、
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