摘要:
The invention relates to a method for cooling granular solid materials from a continuous curing facility having at least one area for burning a fuel in order to cure granular materials, wherein the curing of the granular materials in said facility then the cooling of said cured granular materials is carried out in two consecutive steps, a first cooling step being implemented in a first cooler (2) of the facility and a second cooling step being implemented in a second cooler (3) of the facility, said method being one wherein: a cold air source (31) for cooling the granular materials is provided, said cold air source (31) directly supplying air to said second cooler (3) by means of air blowing, and the air heated by the cured granular materials is used during the cooling as combustion gas for said at least one burning area (41, 42) of the facility. According to the invention: all of the gases generated by said first cooler (2) and said second cooler are routed to said at least one burning area of said curing facility so as to be used as a combustion gas, and the amount of cold air blown to said second cooler is adjusted so as to cover, but not excessively, the air combustion needs of said facility. The invention also relates to a facility (1) as such.
摘要:
In a method for reducing NOx emissions in a rotary kiln of a clinker production plant, fuel delivered by a burner of the rotary kiln is burnt along with primary air delivered by the burner, the primary air having a lower oxygen content and a higher temperature than the ambient air and being obtained by mixing ambient air with waste gas from the rotary kiln or from a heat exchanger that is connected to the rotary kiln and is used for preheating raw meal. The primary air is furthermore obtained by admixing hot air, in particular waste air from a clinker cooler.
摘要:
In a fluidized bed type gasification furnace 1 for thermally decomposing wastes, a temperature of a fluidized bed 1a is maintained within a preferable range, even if the wastes containing a dewatered sludge having higher water content than the conventional wastes is processed. A waste treatment facility 100 is constructed in vicinity of a cement production facility 200. The apparatus comprises the fluidized bed type gasification furnace 1 for gasifying the wastes to generate a pyrolysis gas, and a gas transport line 6 for transporting the generated pyrolysis gas with entrained char and ash to a preheater 10 or a calciner 20 for cement. The apparatus also comprises a temperature elevating device such as a gas air heater 41 and the like, which elevates the temperature of the estimated value that is supplied to the gasification furnace 1 by utilizing waste heat of the cement production facility 200
摘要:
In a fluidized bed type gasification furnace 1 for thermally decomposing wastes, a temperature of a fluidized bed 1a is maintained within a preferable range, even if the wastes containing a dewatered sludge having higher water content than the conventional wastes is processed. A waste treatment facility 100 is constructed in vicinity of a cement production facility 200. The apparatus comprises the fluidized bed type gasification furnace 1 for gasifying the wastes to generate a pyrolysis gas, and a gas transport line 6 for transporting the generated pyrolysis gas with entrained char and ash to a preheater 10 or a calciner 20 for cement. The apparatus also comprises a temperature elevating device such as a gas air heater 41 and the like, which elevates the temperature of the estimated value that is supplied to the gasification furnace 1 by utilizing waste heat of the cement production facility 200
摘要:
In a fluidized bed type gasification furnace 1 for thermally decomposing wastes, a temperature of a fluidized bed 1a is maintained within a preferable range, even if the wastes containing a dewatered sludge having higher water content than the conventional wastes is processed. A waste treatment facility 100 is constructed in vicinity of a cement production facility 200. The apparatus comprises the fluidized bed type gasification furnace 1 for gasifying the wastes to generate a pyrolysis gas, and a gas transport line 6 for transporting the generated pyrolysis gas with entrained char and ash to a preheater 10 or a calciner 20 for cement. The apparatus also comprises a temperature elevating device such as a gas air heater 41 and the like, which elevates the temperature of the estimated value that is supplied to the gasification furnace 1 by utilizing waste heat of the cement production facility 200
摘要:
The invention relates to a device and a method for producing clinker from raw cement material. The raw cement material is preheated in a preheater, is precalcined in a calcining apparatus, is completely burned in a sintering furnace, and is finally cooled in a cooler. Tertiary air of the cooler is fed to the calcining apparatus while eliminated dust is thermally treated in a dust burning reactor with the aid of combustion air and fuel. At least some of the tertiary air is fed to the dust burning reactor as combustion air while the dust that is to be treated and the combustion air penetrate the dust burning reactor in the same direction of flow.