Method and apparatus for producing burnt material and for generating electrical energy
AssigneeKrupp Polysius AG
InventorDietmar Holsiepe
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Abstract
The invention relates to a method and apparatus for producing burnt material and for generating electrical energy, in which the material is burnt using lower-grade fuel in a rotary kiln by means of hot kiln exhaust gases and at least a proportion of the quantity of heat contained in the exhaust gases from the rotary kiln is converted into electrical energy, the temperature of these kiln exhaust gases being between 700.degree. and 1200.degree. C., preferably between 800.degree. and 900.degree. C.
Claims19
A method of producing cement clinker and generating electrical energy comprising:
- a) delivering preheated cement raw material from a preheater to a kiln;
- b) burning a sufficient quantity of low caloric value fuel in said kiln to form cement clinker from said material;
- c) delivering gases of combustion from said kiln to said preheater to preheat said raw material;
- and
- d) delivering said gases of combustion from said preheater to thermally operated electrical energy generating apparatus and at such elevated temperature as to operate said apparatus.
Apparatus for producing cement clinker and driving thermally operated electrical energy generator means comprising:
- a) a preheater;
- b) means for delivering cement raw material to said preheater;
- c) a kiln;
- d) means for delivering said material from said preheater to said kiln;
- e) means for delivering and combusting low caloric value fuel in said kiln in such quantity as to burn said material and produce cement clinker in said kiln and generate gases of combustion of sufficiently high temperature to operate said electrical energy generating apparatus;
- f) means for conducting hot gases of combination from said kiln to said preheater to preheat the material in said preheater;
- and
- g) means for delivering said gases of combustion from said preheater to said electrical energy generator means.
Dependencies are inferred from the claim text.