TÀI LIỆU ĐÀO TẠO - Hệ thống ghi làm lạnh trong nhà máy xi măng (Clinker Coolers) (Holcim Group)

1) Recuperation = Return heat from hot clinker back to process
2) Cooling  = Reduce temperature of clinker

Approach to achieve this:
Hot clinker is exposed to a stream of cold air for a certain period of time (= residence time)
The generated hot air is used for combustion
The clinker is conveyed at a controlled speed
The cooler is tight for clinker and air

Recuperation is the recovery of heat contained in the hot clinker (1300 to 1450°C) at the kiln discharge that is returned to the kiln system to be used for the pyro process, reducing fuel consumption.


Combustion air is the total air required for stoichiometric combustion of the fuels in the kiln and the precalciner; i.e. = primary + secondary + tertiary air

Waste air of (grate) clinker coolers is the cooling air that is in excess of the combustion air and is blown to ambient (via dedusting system). The only purpose of this air is to further cool down the clinker.

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1) Recuperation = Return heat from hot clinker back to process
2) Cooling  = Reduce temperature of clinker

Approach to achieve this:
Hot clinker is exposed to a stream of cold air for a certain period of time (= residence time)
The generated hot air is used for combustion
The clinker is conveyed at a controlled speed
The cooler is tight for clinker and air

Recuperation is the recovery of heat contained in the hot clinker (1300 to 1450°C) at the kiln discharge that is returned to the kiln system to be used for the pyro process, reducing fuel consumption.


Combustion air is the total air required for stoichiometric combustion of the fuels in the kiln and the precalciner; i.e. = primary + secondary + tertiary air

Waste air of (grate) clinker coolers is the cooling air that is in excess of the combustion air and is blown to ambient (via dedusting system). The only purpose of this air is to further cool down the clinker.

LINK DOWNLOAD

Chuyên mục: C. Bài giảng C. Bài giảng chuyên ngành Nhiệt Lạnh (Heat and Refrigeration) C. Bài giảng kỹ thuật