Liquid heaters and vaporizers – Industrial – Port
Patent
1989-10-17
1991-01-08
Yuen, Henry C.
Liquid heaters and vaporizers
Industrial
Port
122489, 12223511, F22B 3710
Patent
active
049827030
ABSTRACT:
A fluid flow circuit for a boiler having a combustion chamber and an exhaust passage. In one embodiment there is provided at least one upflow evaporative generating bank module in the exhaust passage and at least one downflow evaporative generating bank module in the exhaust passage, positioned downstream of the upflow module. One or more upper downcomers are connected to a steam drum and supply water to the lower header of the upflow module and to the upper header of the downflow module. If needed, the convection pass wall enclosures can also be fed by the upper downcomers to their upper inlet headers. One or more lower downcomers may be connected to each lower header of the downflow module (and to the lower outlet headers of the convection pass wall enclosures) for supplying the water to a plurality of furnace circuits which extend along the combustion chamber in the boiler. The opposite end of each furnace circuit is connected to one or more risers which, in turn, are connected to the steam drum. The upper header of the upflow module is also connected to the steam drum through one or more risers for completing the circuit.
REFERENCES:
patent: 2077410 (1937-04-01), Hanter et al.
patent: 3358650 (1967-12-01), Olson et al.
patent: 4604972 (1986-08-01), Difonzo et al.
Edwards Robert J.
Marich Eric
Matas Vytas R.
The Babcock & Wilcox Company
Yuen Henry C.
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