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Blasting dehumidification system for multiple blast furnaces and control method of blasting dehumidification system
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A control method and blast furnace blasting technology, applied in humidity control, blast furnace, blast furnace details, etc., can solve the problems of unbalanced use of refrigeration equipment capacity and inability to flexibly adjust the operation mode of refrigeration equipment, so as to improve the overall utilization rate and avoid system Overall failure, flexible adjustment effect
Inactive Publication Date: 2015-01-07
MAGANG (GROUP) HOLDING CO LTD +1
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[0005] The object of the present invention is to provide a blast dehumidification system for multiple blast furnaces and its control method, which can solve the problem of unbalanced use of refrigeration equipment capacity caused by temperature fluctuations, reduce energy waste, and solve the problem of multiple blast furnace blast dehumidification. The problem that the operation mode of refrigeration equipment in the dehumidification system cannot be adjusted flexibly
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example 1
[0056] Example 1: The operation mode of the dehumidification system above working condition point 3 (1#, 2# fans are running, 3# fans are in standby)
[0057] 1#~4# refrigeration units are running, the total cooling load is 12 million kcal / h, and the cooling capacity required by the dehumidification device is 10 million to 13 million kcal / h
[0058] Cold water pipe valve LS 3#~14# valve is fully open, LS 1#~2# valve is fully closed
[0059] Steam pipeline valve ZQ 1#~4# valve fully open
[0060] Circulating water pipeline valve XH 11#, 12#, 21#, 22#, 31#, 32#, 41#, 42# valve fully open
[0061] Refrigeration unit inlet and outlet cold water valve SB11#, 12#, 13#, 21#, 22#, 23#, 31#, 32#, 33#, 41#, 42#,
[0062] 43# valve fully open
example 2
[0063] Example 2: Operation mode of refrigeration equipment under working condition point 4 (1# and 2# fans are running, 3# fans are in standby)
[0064] It can operate 1#~3# refrigeration unit, 4# refrigeration unit is standby, the total cooling load is 9 million kcal / h, and the cooling capacity required by the dehumidification device is 8.5 million kcal / h
[0065] Cold water pipe valve LS 3#~14# valve is fully open, LS 1#~2# valve is fully closed
[0066] Steam pipeline valve ZQ 1#~3# valve is fully open, ZQ 4# valve is fully closed
[0067] Circulating water pipeline valves XH 11#, 12#, 21#, 22#, 31#, 32# valves are fully open, XH41#, 42# valves are fully closed
[0068] SB11#, 12#, 13#, 21#, 22#, 23#, 31#, 32#, 33# valves of the inlet and outlet cold water valves of the refrigeration unit are fully open, and SB41#, 42#, 43# valves are fully closed
example 3
[0069] Example 3: Example of adjusting the operation mode of refrigeration equipment under working condition point 4: (1# and 2# fans are operated, 3# fans are standby, Turn to 1#, 3# fan operation, 2# fan standby)
[0070] It can operate 1#~3# refrigeration unit, 4# refrigeration unit is standby, the total cooling load is 9 million kcal / h, and the cooling capacity required by the dehumidification device is 8.5 million kcal / h
[0071] Cold water pipeline valves LS 1#~6#, 9#~14# valves are fully open, LS 7#~8# valves are fully closed
[0072] Steam pipeline valve ZQ 1#~3# valve is fully open, ZQ 4# valve is fully closed
[0073] Circulating water pipeline valves XH 11#, 12#, 21#, 22#, 31#, 32# valves are fully open, XH41#, 42# valves are fully closed Refrigeration unit inlet and outlet cold water valves SB11#, 12#, 13#, 21 #, 22#, 23#, 31#, 32#, 33# valves are fully open, SB41#, 42#, 43# valves are fully closed
[0074] From the above example, it can be seen that as the a...
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Abstract
The invention relates to a blasting dehumidification system for multiple blast furnaces and a control method of the blasting dehumidification system. The blasting dehumidification system comprises a plurality of blast blowers, a plurality of dehumidifiers, refrigeration plants and cold water mother tubes, wherein the blast blowers form a blast furnace blasting station, are connected with one another, and used for supplying air to one or more blast furnaces; the dehumidifiers are respectively arranged on front pipes of the blast flowers; the refrigeration plants are connected in parallel to form a plurality of refrigeration stations which are connected to one or more blast furnaces; cold water of the refrigeration plants is respectively connected with the dehumidifiers through the cold water mother tubes; chilled water tubes (namely the cold water mother tubes) are connected with one another, and one or more isolation valves are arranged in the middle of each chilled water tube. According to different working conditions, corresponding control is carried out by adjusting the operating numbers of the valves on the cold water mother tubes and the water chiller sets while keeping the blast capacity and air pressure unchanged. According to the blasting dehumidification system and the control method thereof, the problem that the refrigeration plants are unbalanced in capacity utilization due to the air temperature fluctuation is solved, the energy waste is reduced, and the problem that the operation manner of the refrigeration plants in the blasting dehumidification system for multiple blast furnaces cannot be flexibly adjusted is solved.
Description
technical field [0001] The invention relates to a blast furnace dehumidification system of a metallurgical enterprise, in particular to a blast dehumidification system for multiple blast furnaces and a control method thereof. Background technique [0002] The blast furnace adopts blast dehumidification technology to reduce the air humidity and stabilize it at a certain humidity value, so as to achieve the purpose of stabilizing the furnace condition, reducing the coke ratio and increasing the pig iron production. At present, the freezing and dehumidification process before the blast furnace blower is mainly used to reduce the temperature of the humid air in front of the blast furnace blower to the saturation temperature corresponding to the partial pressure of the water vapor contained in it. The water vapor condenses and precipitates to achieve the purpose of dehumidification. For more than two blast furnaces performing freezing and dehumidification at the same time, the r...
Claims
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Application Information
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