Desulfurizer preparation unit based on calcium cycle of cement clinker production line
A cement clinker and production line technology, applied in the direction of gas treatment, membrane technology, dispersed particle separation, etc., can solve the problems of increasing production costs, prone to carbonization, and reducing the activity of desulfurizers, so as to save costs, facilitate operation, and solve emissions problem effect
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Embodiment 1
[0034] See figure 1 The embodiment of the present invention provides a desulfurizer preparation unit based on calcium circulation in a cement clinker production line. The desulfurizer preparation unit uses part of the hot raw material decomposed by the decomposition unit to form a desulfurizer through cooling and digestion. The preparation unit includes a cooling unit 20 connected to the discharge port of the decomposition unit 10, and a digestion unit 30 connected to the discharge port of the cooling unit 20; the decomposition unit 10 decomposes the raw meal into active thermal raw meal, and the decomposition unit 10 includes a The three-stage to seven-stage kiln-end preheater is selected for the three-stage kiln-end preheater and the decomposition furnace 101, and the five-stage preheater is preferably used in this embodiment. The working principle of the above technical scheme: the raw meal is decomposed by the decomposition unit 10 at high temperature to obtain the active ra...
Embodiment 2
[0048] The difference from Example 1 is that the active hot raw material is taken out from the outlet duct of the decomposition furnace 101.
[0049] See figure 2 with image 3 , The cooling unit 20 is connected to the outlet air pipe of the decomposition furnace 101 through a material taking unit. Most of the active raw meal exiting the calcining furnace enters the cyclone tube 102 of the final kiln tail preheater along with the flue gas, and the remaining part enters the cooling unit 20 through the reclaiming unit for cooling.
[0050] The reclaiming unit includes a reclaiming cyclone 404. The inlet pipe and the outlet air pipe of the reclaiming cyclone 404 are equipped with high-temperature gate valves 405 and 406. The inlet pipe of the reclaiming cyclone 404 and the decomposition furnace 101 outlet air pipe is connected, the outlet air pipe of the reclaiming cyclone 404 is connected to the outlet air pipe of the final or penultimate kiln tail preheater, and the discharge pipe ...
Embodiment 3
[0053] Different from Example 1 and Example 2, please refer to Figure 4 The digestion unit 30 is also provided with a quicklime feed port 301. When performing equipment maintenance, or system failure, or SO in the flue gas 2 When the concentration is high, or the self-made desulfurizer of active raw meal cannot meet the self-sufficient desulfurization demand of the system, in addition to the active raw meal, a certain amount of quicklime can be added to the digestion unit 30 to ensure the amount of desulfurizer prepared and desulfurize Work stably to achieve efficient desulfurization.
[0054] In summary, the desulfurizer preparation unit based on calcium circulation of cement clinker production line of the present invention adopts the hot raw material made by cement kiln, and the active raw material after cooling and digestion is used as the desulfurizer to absorb the cement kiln clinker production process. The generated sulfur dioxide reduces the SO in the flue gas 2 Therefor...
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