Method and apparatus for discharge of fluidized bed in coated controlled release fertilizer production

A technology of unloading device and fluidized bed, which is applied in fertilization device, fertilizer mixture, application and other directions, can solve the problems of low production capacity of coated fluidized bed, volatilization and waste of coating solvent, and long production cycle of fluidized bed, etc. Achieve the effect of being beneficial to equipment maintenance, avoiding frequent startup and shortening the unloading cycle

Active Publication Date: 2009-04-15
KINGENTA ECOLOGICAL ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The production capacity of most of the existing coated fluidized beds is low, generally below 500kg / h, and the unloading method of the fluidized bed is mostly manual unloading. When unloading, the fan that provides fluidized gas must be stopped first. Then open the fluidized bed and pull out the unloading bin part to realize unloading
This unloading method is cumbersome to operate and has a long unloading cycle, resulting in a long production cycle and low output of the fluidized bed; in addition, the frequent switching of the fluidized bed and the frequent start of the fan not only does not use equipment protection, but also causes the coating solvent Volatile waste, not conducive to environmental protection

Method used

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  • Method and apparatus for discharge of fluidized bed in coated controlled release fertilizer production
  • Method and apparatus for discharge of fluidized bed in coated controlled release fertilizer production

Examples

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Effect test

Embodiment 1

[0023] Depend on figure 1 It can be seen that the unloading device of the fluidized bed of the present invention includes a jack 3, a discharge bin 5, an air locker 6 and a finished product bin 7, wherein the air distribution plate 2 is separated from the sealing plate 1 by the jack 3 And compress, jack 3 is fixed on the support 4, and is installed in the unloading silo 5 together with support 4, and the outlet of unloading silo 5 is connected with finished product silo 7 by air locker 6. The air distribution plate 2 is a circular flat type air distribution plate, and the jack is an ordinary jack.

Embodiment 2

[0025] A kind of unloading device of fluidized bed of the present invention, structure such as figure 2 As shown, the difference from Example 1 is that the air distribution plate 2 is a conical air distribution plate with a cone angle α≤5°, and the jack 3 is an air pressure jack controlled by a solenoid valve.

Embodiment 3

[0027] Utilize the unloading device described in embodiment 1 or 2, carry out the unloading in the production of coated controlled-release fertilizer, specific operation steps:

[0028] A. Use the jack 3 to lower the air distribution plate 2 by 100-300mm to separate it from the sealing plate 1;

[0029] B. The material on the air distribution plate 2 is discharged into the discharge bin 5 under the blowing of gravity and fluidizing gas;

[0030] C. The material in the discharge bin 5 enters the finished product bin 7 through the air locker 6;

[0031] After the unloading is completed, use the jack 3 to lift the air distribution plate 2 and press the sealing plate 1 so that the next cycle of production can be added.

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PUM

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Abstract

The invention discloses an unloading method and a device of a fluidized bed in the controlled-release fertilizer production. A jack is used for descending a grid plate for 100-300mm to separate the grid plate from a seal plate; under gravity and the purging by fluidizing gas, materials are unloaded into an unloading storage hopper; materials in the unloading storage hopper enter a finished product storage hopper through a closed-air aspirator; and after the unloading process is finished, the jack is used for ascending the grid plate to compress the seal plate for charging to carry on production of a following cycle. The whole unloading process is closed, thus preventing volatilization of coated solvent, avoiding environmental pollution, and improving the production capacity of the fluidized bed.

Description

technical field [0001] The invention belongs to the technical field of controlled-release fertilizer production, in particular to a method and device for unloading a fluidized bed for producing coated controlled-release fertilizer. Background technique [0002] my country's fertilizer consumption accounts for about 20-30% of the world's total fertilizer consumption, ranking first in the world. The average seasonal utilization rate of chemical fertilizers in developed countries is 50-60%, and the average seasonal utilization rate of chemical fertilizers in my country is only 30-35%. . The loss and waste of a large number of nutrients not only bring huge economic losses to the society, but also cause serious environmental pollution. At present, with the continuous increase in the amount of chemical fertilizers, the modification of fertilizers is even more important under the multiple goals of pursuing both yield and quality of agricultural products and environmental friendline...

Claims

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Application Information

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IPC IPC(8): C05G3/00
Inventor 张民张晓义杨官波
Owner KINGENTA ECOLOGICAL ENG GRP
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