Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Patent
1983-08-03
1985-05-21
Caroff, Marc L.
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
134 36, 134 37, 134 42, 415 1, B08B 900
Patent
active
045184380
ABSTRACT:
The present invention relates to a method for the transference, cooling and compression of nitrogen oxide-containing gases. In critical sections of a unit for such processes the formation of salt deposits can be removed or prevented by maintaining a water vapor pressure which lies above the equilibrium water vapor pressure of the salt deposits at the existing temperatures. The prescribed water vapor pressure is maintained by dividing the gas into at least two separate streams, cooling at least one of the streams solely by directly injecting water thereinto, cooling the remaining streams by indirect cooling, forming condensate in indirect coolers, and then joining the directly and indirectly cooled streams prior to introduction thereof into the critical sections. The condensate from the indirect coolers can be utilized for direct cooling. Salt deposits can be removed/prevented without the supply of extra energy, water vapor or liquid. The method can be adapted to existing plants without substantial alteration thereof.
REFERENCES:
patent: 3084076 (1963-04-01), Loucks et al.
patent: 3297481 (1967-01-01), Newman
patent: 3424371 (1969-01-01), Happe
patent: 3830660 (1974-08-01), Ezell
patent: 4295895 (1981-10-01), Kongshaug
Caroff Marc L.
Norsk Hydro a.s.
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