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Powdery lime preparation system

A preparation system and technology of powdered lime, which is applied in the direction of grain processing, etc., can solve the problems of difficult decomposition and activation inside the block, poor grindability of block lime, and high heat consumption required for decomposition, so as to improve the fuel combustion environment and efficiency, The effect of low power consumption for grinding and improved decomposition speed

Pending Publication Date: 2019-05-28
NANJING KISEN INT ENG
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional lime powder is to decompose the massive limestone directly through calcination to form massive active lime, and then crush the massive active lime into lime powder. This preparation method has the following defects: First, due to the particle size of the massive limestone Larger, so the heat consumption required for its decomposition will be very high, that is, the interior of the block is often difficult to be decomposed and activated. At this time, it is necessary to increase the calcination temperature to obtain a relatively high decomposition rate, which will lead to high heat consumption of the system; The obtained block lime has poor grindability, and the powdered material consumes a lot of electricity
Therefore, the traditional lime powder preparation method has high power consumption and high heat

Method used

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Experimental program
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Effect test

Embodiment 1

[0025] refer to figure 1 , Embodiment 1 of the present invention provides a kind of powdery lime preparation system, comprises roller press 2 and calciner 10, also comprises massive limestone steady flow bin 1, V-type powder separator 4, fine powder separator 6, dust collector device 7, preheating unit 9 and cooling unit 11; the feed port of the roller press 2 is connected with the discharge port of the massive limestone steady flow bin 1, and the discharge port of the roller press 2 passes through the first bucket elevator 3 is connected with the feed port of V-type powder separator 4; the coarse powder discharge port of said V-type powder selector 4 is connected with the feed port of block limestone steady flow bin 1 through the second bucket elevator 5, V The fine powder discharge port of the type powder separator 4 is connected with the feed port of the fine powder separator 6; the coarse powder discharge port of the fine powder separator 6 is stabilized with the block lim...

Embodiment 2

[0030] refer to Figure 4, Embodiment 2 of the present invention provides a kind of powdery lime preparation system, differs from Embodiment 1 in that, the connecting pipeline between the second fan 12 and the V-type powder separator 4 is provided with an air supply port 13, The air supply port 13 is provided with a supplementary air valve to facilitate the adjustment of the air volume and air temperature of the V-type powder separator 4 and the fine powder separator 6. If the limestone moisture content is not large, the heat value of the hot air meets the limestone drying requirements. However, the air volume cannot meet the requirements of powder selection, and the air volume can meet the powder selection requirements through cold air, which can further facilitate the impact and break up of materials, and improve the powder selection and drying efficiency of the powder selection system.

Embodiment 3

[0032] refer to Figure 5 Embodiment 3 of the present invention provides a powdered lime preparation system. The difference from Embodiment 2 is that there is a burner at the fuel inlet of the calciner 10 , and the burner is connected with the third fan 14 . An electric valve 15 is provided at the air inlet of the third fan 14 . The setting of the burner and the blowing of the primary air help to burn the fuel in the calciner 10, and an electric valve 15 is designed at the inlet of the third fan 14, which is beneficial to control the supply of the primary air volume so as to match the volume of the burner and fuel .

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Abstract

The invention provides a powdery lime preparation system. The powdery lime preparation system comprises a roller press; a feeding hole of the roller press is connected with a steady flow cabin, and adischarging hole of the roller press is connected with a feeding hole of a V-shaped power selecting machine; a coarse powder discharging hole of the V-shaped power selecting machine is connected witha feeding hole of the steady flow cabin, and a fine powder discharging hole of the V-shaped power selecting machine is connected with a feeding hole of a fine power selecting machine; a coarse powderdischarging hole of the fine power selecting machine is connected with the steady flow cabin, and a fine powder discharging hole of the fine power selecting machine is connected with an air inlet of adust collector; a discharging hole of the dust collector is connected with a feeding hole of a preheating unit; a limestone powder discharging hole of the preheating unit is connected with a feedinghole of a decomposing furnace, and an air outlet of the preheating unit is connected with an air inlet of the V-shaped power selecting machine; an air outlet of the decomposing furnace is connected with a lime powder feeding hole of the preheating unit; a lime powder discharging hole of the preheating unit is connected with a feeding hole of a cooling unit; and an air outlet of the cooling unit isconnected with an air inlet of the decomposing furnace. The powdery lime preparation system provided by the invention realizes advantageous combination of limestone crushing and calcining process, and remarkably reduces the overall energy consumption of the system.

Description

technical field [0001] The invention relates to the field of powdered lime preparation, in particular to a powdered lime preparation system. Background technique [0002] The traditional lime powder is to decompose the massive limestone directly through calcination to form massive active lime, and then crush the massive active lime into lime powder. This preparation method has the following defects: First, due to the particle size of the massive limestone Larger, so the heat consumption required for its decomposition will be very high, that is, the interior of the block is often difficult to be decomposed and activated. At this time, it is necessary to increase the calcination temperature to obtain a relatively high decomposition rate, which will lead to high heat consumption of the system; The obtained massive lime has poor grindability, and the power consumption of the powdered material is relatively high. Therefore, the traditional lime powder preparation method has high...

Claims

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Application Information

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IPC IPC(8): C04B2/10B02C4/02
CPCY02P40/40
Inventor 康宇李安平武艳文
Owner NANJING KISEN INT ENG