Liquid heaters and vaporizers – Industrial – Waste heat
Patent
1982-07-26
1984-10-02
Favors, Edward G.
Liquid heaters and vaporizers
Industrial
Waste heat
16510415, 16510418, F22D 100
Patent
active
044741383
ABSTRACT:
A method of cooling hot bulk material using a reactor comprises passing a cooling gas in heat exchange relationship with the bulk material, contacting the cooling gas and the bulk material with a water vaporizing heat exchanger surface to remove a part of the heat content of the bulk material and the cooling gases which are heated by the bulk material, and directing the cooling gases after the contact, to an additional water vaporizing heat exchange surface to cool the contacted gases for reuse. The cooling gases after they are heated are directed preferably to a waste heat boiler where they are cooled and after separation returned back to be again circulated to the reacting vessel for cooling the bulk material. The cooling reactor for cooling the hot bulk material comprises a vertically elongated vessel defining a cooling chamber which has a top charging inlet for the bulk material and a bottom charge discharge for the cooled bulk material. The construction includes a plurality of water vaporizing heat exchanger surfaces in the reactor vessel which, for example may comprise elements embedded in the wall of the reactor vessel for circulating water from a ring pipe inlet to a steam ring pipe discharge located adjacent the upper end of the reactor vessel. Additionally heat exchanger units may extend across the reactor vessel. The top of the units are covered by roof-like elements to deflect the bulk material away from the units and from a central empty space defined by the units.
REFERENCES:
patent: 3546787 (1970-12-01), Horner et al.
patent: 4351275 (1982-09-01), Bhojwani
patent: 4369834 (1983-01-01), Meunier et al.
Remmers Karl
Steinebach Heinz
Favors Edward G.
Thyssen Industrie AG
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