Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
242 words
A manufacturing process for producing pulverulent coke and reactive coke in grain form, in which bituminous coal from fines and coal grains containing more than 15% volatile combustible matter with a swelling index ranging between 1 and 8 is carbonized at temperatures between about 600° and 1100° C. in which process said bituminous coal is introduced at the higher end of a slightly inclined rotating tubular oven, through which oven the coke during the course of its production moves from the higher end to the lower end; in which process the heat of carbonization is obtained by the substantially simultaneous in situ generation and combustion of a part of the volatile combustible matter, by introducing an amount of air into the oven, which air is combustion air and which amount is in excess of a quantity of said air which would be necessary to bring the coke to the desired coking temperature, the majority of said air being introduced into the oven at a position between the outlet for the coke and the location of the area of maximum temperature reached by the coke; and wherein an endothermic fluid is introduced at the lower end of the oven for selectively establishing the location of said area of maximum temperature in said oven, for cooling the coke between said location and said outlet and for maintaining the temperature of the gases issuing from the higher end of said oven at about 600° C.
Claim 2
Dependent Claim
242 words
A manufacturing process for producing pulverulent coke and reactive coke in grain form, in which bituminous coal from fines and coal grains containing more than 15% volatile combustible matter with a swelling index ranging between 1 and 8 is carbonized at temperatures between about 600° and 1100° C. in which process said bituminous coal is introduced at the higher end of a slightly inclined rotating tubular oven, through which oven the coke during the course of its production moves from the higher end to the lower end; in which process the heat of carbonization is obtained by the substantially simultaneous in situ generation and combustion of a part of the volatile combustible matter, by introducing an amount of air into the oven, which air is combustion air and which amount is in excess of a quantity of said air which would be necessary to bring the coke to the desired coking temperature, the majority of said air being introduced into the oven at a position between the outlet for the coke and the location of the area of maximum temperature reached by the coke; and wherein an endothermic fluid is introduced at the lower end of the oven for selectively establishing the location of said area of maximum temperature in said oven, for cooling the coke between said location and said outlet and for maintaining the temperature of the gases issuing from the higher end of said oven at about 600° C.
Claim 3
Dependent Claim
26 words
A process according to claim 1, wherein at least 60% of the total quantity of air introduced is introduced through the lower end of the oven.
Claim 4
Dependent Claim
12 words
A process according to claim 1, wherein the endothermic fluid is water.
Claim 5
Dependent Claim
61 words
A process according to claim 1 wherein during the course of production of said coke, a zone of lowest temperature rise is created, said zone being a temperature zone ranging from 300° to 450° C. and in which zone the rate of increase of the temperature of a given segment of coke is of the order of 10 to 15° C./min.
Claim 6
Dependent Claim
32 words
A process according to claim 4, wherein the increase in temperature is a result of adjusting the rotating speed of the oven to cause accumulation of the coke in its plastic phase.