Method for the cooling of a shaft furnace for the calcining of lime, dolomite or magnesite
AssigneeKlockner-Humboldt-Deutz Aktiengesellschaft
InventorHeinrich Buchner
Life of this patent
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Abstract
A method and apparatus is disclosed for the cooling of a lime shaft furnace for the calcining of limestone and which is operable with a combustible fuel. In shaft chambers of the shaft furnace, a hollow beam is provided to convey combustible fuel into the shaft chamber. Associated with the hollow beam is a cooling unit for cooling walls of the beam. A closed circuit cooling liquid system connects with the cooling unit so as to maintain a flow of a cooling liquid through the cooling unit. The cooling liquid has a boiling point of greater than 100.degree. C. This cooling liquid is continuously recooled by a heat exchanger.
Claims19
A method for the cooling of a lime shaft furnace for the calcining of limestone and which is operable with a combustible fuel, comprising the steps of:
- providing at least one shaft chamber in the shaft furnace;
- conveying the combustible fuel through a hollow beam means into the shaft chamber, said hollow beam means having a cooling means adjacent thereto in the shaft chamber;
- and conveying a temperature resistant cooling liquid in a closed circuit through the cooling means, said liquid having a boiling point of more than 100.degree. C.
A cooling system for a lime shaft furnace for the calcining of limestone and which is operable with a combustible fuel, comprising:
- a lime shaft furnace having at least one shaft chamber therein;
- a hollow beam means for conveying the combustible fuel into the shaft furnace, said hollow carrier having a cooling means adjacent thereto in the shaft chamber;
- a closed circuit cooling liquid conduit system connected to the cooling means;
- and a cooling liquid in the conduit system which flows through the cooling means, said cooling liquid having a boiling temperature above 100.degree. C.
A cooling system for a lime shaft furnace for the calcining of limestone and which is operable with a combustible fuel, comprising:
- a lime shaft furnace having a shaft chamber therein;
- hollow beam means in the shaft chamber for conveying combustible fuel into the shaft furnace;
- cooling means in the shaft chamber for cooling the hollow beam means;
- a closed circuit cooling liquid conduit system connected to the cooling means;
- and a cooling liquid in the conduit system having a boiling temperature above 100.degree. C., whereby the hollow carrier means is cooled with a cooling liquid operable at higher temperatures and in a closed system.
Dependencies are inferred from the claim text.