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Dissolving kettle solute adding method and device during coated controlled release fertilizer production

A technology of coating controlled release fertilizer and feeding device, which is applied in fertilization device, fertilizer mixture, application and other directions, can solve the problems of environmental pollution, cost increase, volatilization, etc., so as to reduce production cost, avoid solvent loss, and save leakage. The effect of the pressing process

Active Publication Date: 2009-12-23
KINGENTA ECOLOGICAL ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the coating solution in the dissolution tank is delivered, there is still a certain pressure in the dissolution tank, so when adding the solute, it is necessary to vent the pressure of the dissolution tank first, resulting in the discharge of the solvent tail gas, and in order to recover the tail gas and reduce environmental pollution , the solvent recovery device must be added, which greatly increases the cost
At the same time, adding the coating material after the pressure release still causes part of the solvent to volatilize from the feeding port, which not only wastes the solvent, but also pollutes the environment

Method used

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  • Dissolving kettle solute adding method and device during coated controlled release fertilizer production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The structure of the coating material feeding device in the dissolution kettle in the production of coated controlled-release fertilizer is as follows: figure 1 As shown, it includes a feeding bin 1, an upper valve 2, a buffer bin 3, a lower valve 4 and a nitrogen valve 5 that are connected to the feeding port 7 of the dissolution kettle 6, and the feeding bin 1 passes through the upper valve 2, the buffer bin 3 and the nitrogen valve 5. The lower valve 4 is connected. The nitrogen valve 5 is located at the top of the buffer bin 3 .

Embodiment 2

[0017] Utilize the method that device described in embodiment 1 carries out the method for dissolving tank solute feeding, may further comprise the steps:

[0018] A. Confirm that the lower valve 4 and the nitrogen valve 5 are in the closed state, open the upper valve 2 to relieve the pressure of the buffer silo 3 and then close it, and then add all the solute polyethylene required to the feeding silo 1;

[0019] B. Open the upper valve 2, put all the polyethylene into the buffer bin 3, close the upper valve 2, open the upper nitrogen valve 5 of the buffer bin 3, and fill an appropriate amount of nitrogen to make the pressure of the buffer bin 0.005MPa higher than the pressure of the dissolution tank 6 ;

[0020] C. Open the lower valve 4, press all the polyethylene into the dissolution kettle 6, and then close the valve 4, thereby completing the sealed feeding of polyethylene.

Embodiment 3

[0022] Utilize the method that device described in embodiment 1 carries out the method for dissolving tank solute feeding, may further comprise the steps:

[0023] A. Confirm that the lower valve 4 and the nitrogen valve 5 are closed, open the upper valve 2 to relieve the pressure of the buffer bin 3 and then close it, and then add all the required polypropylene to the feeding bin 1;

[0024] B. Open the upper valve 2, put all the polypropylene into the buffer bin 3, close the upper valve 2, open the upper nitrogen valve 5 of the buffer bin 3, and fill an appropriate amount of nitrogen to make the pressure of the buffer bin 0.02MPa higher than the pressure of the dissolution tank 6 ;

[0025] C. Open the lower valve 4, press all the polypropylene into the dissolving tank and then close the valve 4 to complete the closed feeding of polypropylene.

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Abstract

The invention discloses a method and a device for feeding solute into a dissolution tank in the production of coated controlled-release fertilizers. Including steps: A. Confirm that the lower valve and the nitrogen valve are in the closed state, open the upper valve to relieve the pressure of the buffer silo and then close it, and then add all the required solutes to the feeding silo; B. Open the upper valve and put all the solutes into the buffer material After the warehouse, close the upper valve, open the nitrogen valve and fill with an appropriate amount of nitrogen to make the pressure of the buffer bin slightly higher than the pressure of the dissolution kettle; C, open the lower valve, press all the solute into the dissolution kettle and then close the valve. The invention adopts a two-stage feeding method, which not only saves the pressure relief process of the dissolution kettle, but also avoids solvent loss caused by solvent venting and volatilization, which is beneficial to environmental protection.

Description

technical field [0001] The invention belongs to the technical field of controlled-release fertilizer production, and in particular relates to a method and a device for feeding coating material of a dissolution kettle in the production of coated controlled-release fertilizer. Background technique [0002] Coated controlled-release fertilizer is a new type of fertilizer that wraps a special film on the outer layer of traditional fertilizers to control the release rate and amount of nutrients according to the nutrient requirements of crops, so that the nutrient release curve is consistent with crop requirements. The outstanding feature of this fertilizer is that effective nutrients are supplied synchronously according to the growth curve of crops, so that the effective utilization rate of fertilizer nutrients is greatly improved. Under the premise of ensuring crop growth, compared with fertilizers with the same concentration, the utilization rate of fertilizer efficiency can be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 万连步张晓义徐恒军
Owner KINGENTA ECOLOGICAL ENG GRP
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