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Method and device for continuous production of coated controlled release fertilizer

A production bag and film control technology, which is applied to fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of increasing the cost of film-coated controlled-release fertilizers, low equipment utilization, and long operation cycles, so as to reduce the unit consumption of solvents and reduce the Labor intensity, the effect of avoiding frequent start and stop

Active Publication Date: 2009-11-18
KINGENTA ECOLOGICAL ENG GRP
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Problems solved by technology

[0004] Most of the production of coated controlled-release fertilizers in my country is in the laboratory or small test stage. The spouted fluidized beds used are basically small-scale equipment. The feeding and unloading are manual intermittent operations, and the operation cycle is long.
This leads to low equipment utilization, small output, and high unit energy consumption, which greatly increases the cost of coated controlled-release fertilizers

Method used

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  • Method and device for continuous production of coated controlled release fertilizer

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Embodiment 1

[0017] A device for continuous production of coated controlled-release fertilizers using a spouted fluidized bed, the structure of which is as follows figure 1 As shown, including the spouted fluidized bed 4 as the core equipment, an automatic feeding device and an automatic unloading device are added on the spouted fluidized bed 4 . The automatic feeding device is located above the spouted fluidized bed 4 and includes an automatic metering scale 1, a feeding bin 2, and an automatic control valve 3. The feeding bin 2 communicates with the spouted fluidized bed 4 through the automatic control valve 3. The automatic unloading device is located at the outside of the spouted fluidized bed, and includes an automatic control valve 6 and a discharge bin 7. The unloaded bin 7 is connected to the bottom cylinder of the spouted fluidized bed 4 through the automatic control valve 6. 9 connected. A lifter 5 is provided at the bottom of the air distribution plate 8 in the sprayed fluidize...

Embodiment 2

[0020] Use the device described in embodiment 1, the method for continuous production coated controlled-release fertilizer, specifically comprises the steps:

[0021] (1) Utilize the automatic measuring scale 1 to weigh and measure the fertilizer to be coated, and add it to the feeding bin 2 for use;

[0022] (2) Through the automatic control valve 3 at the bottom of the feeding bin 2, open the valve at any time according to the production requirements to add the fertilizer to be coated into the spouted fluidized bed 4, and then close it;

[0023] (3) After the fertilizer coating in the spouted fluidized bed 4 is completed, open the lifter 5 and the automatic control valve 6 in the spouted fluidized bed 4, put the coated fertilizer into the discharge bin 7, and then close it;

[0024] The aforementioned feeding and discharging process does not need to stop the induced draft fan that provides the fluidizing gas.

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Abstract

The invention provides a method for continuous production of coated controlled-release fertilizer and a device thereof. The method comprises the following steps: after being metered through an automatic scale, granular fertilizer to be coated is charged into a feeding bin, through the control of an automatic control valve at the bottom of the feeding bin, the granular fertilizer is charged into a spouted fluidized bed, then the automatic control valve is closed, after the coating of the granular fertilizer is finished in the spouted fluidized bed, a riser in the spouted fluidized bed is started to remove a grid plate, the coated controlled-release fertilizer is discharged to a bottom barrel, and after being opened to discharge the coated controlled-release fertilizer into a discharging bin, the automatic control valve is closed. The invention has the advantages that the production of coated controlled-release fertilizer through the spouted fluidized bed is changed from the original intermittent production into the continuous production. Therefore, the effective production time is increased, and the purpose of enhancing the output, reducing the consumption and saving the labor force is realized.

Description

technical field [0001] The invention belongs to the technical field of controlled-release fertilizer production, and in particular relates to a method and device for continuously producing coated controlled-release fertilizer by using a spouted fluidized bed. Background technique [0002] my country is a big country in the production and use of chemical fertilizers, but the utilization rate of common chemical fertilizers is very low, and the loss of active ingredients not only causes waste of resources, but also seriously pollutes the environment. People have to find new breakthroughs to reduce environmental pollution, reduce energy consumption, reduce production costs and improve crop quality. Controlled release fertilizer is one of the promising directions. The research and application of controlled-release fertilizers was first carried out in the United States. The research and development of sulfur as a coating material in 1961 marked the beginning of the research and ...

Claims

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Application Information

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