Integrated melt material pelletizing and filming production method and apparatus

A production method and granulation technology, which is applied in the fields of granulation coating, single-component or multi-component molten materials, urea coating, granulation coating production, and can solve the problem of no granulation coating process, simultaneous processing, etc. problem, to achieve the effect of lower melting temperature, low cost and energy saving

Inactive Publication Date: 2005-09-28
周端午
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The above methods all use tower granulation, drum granulation, oil cooling granulation, and spray granulation equipment to granulate the molten material, but do not carry out the granulation and coating process at the same time.

Method used

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  • Integrated melt material pelletizing and filming production method and apparatus
  • Integrated melt material pelletizing and filming production method and apparatus

Examples

Experimental program
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Effect test

Embodiment 1

[0063] Embodiment one (high potassium type N: P 2 o 5 : K 2 O=15:15:15)

[0064] Physicochemical properties of slow-release / controlled-release agent: water-soluble polymer-based slow-release / controlled-release agent, the solidification temperature of the film liquid is 85°C, and the solid content of the film liquid is 40%;

[0065] Physical and chemical properties of the molten slurry: the average eutectic point of the molten slurry is 97°C (with additives added); the density is 1.664g / L

[0066] Potassium chloride (K 2 (0≥60%) 251kg is added to the 1200L melting and complexing reaction kettle, and the melting urea (179kg) that is added with complexing accelerator in the reactor is mixed and eutectic, then ammonium sulfate 110kg, ammonium phosphate 262.3kg, and slurry flow Performance improver (15kg), trace element 48kg, functional additive 150kg, join in the eutectic slurry of urea and potassium chloride, prepare to contain N:P 2 o 5 : K 2 O=15:15:15 mixed molten slurr...

Embodiment 2

[0067] Embodiment two (molten urea N=46%)

[0068] Physicochemical properties of slow-release / controlled-release agent: water-soluble polymer-based slow-release / controlled-release agent, the curing temperature of the film liquid is 90°C, and the solid content of the film liquid is 40%;

[0069] Physical and chemical properties of the molten slurry: the melting point of molten urea in the urea production process is 132.7°C; the density is 1.323g / L

[0070] Add 1000kg of molten urea (N≥46%) from the urea production process to a 1200L melting reactor, add a slurry flow performance improver (5kg), and pump the above molten slurry into the rotating cone of the integrated granulation coating machine In the nozzle, the slurry flow rate is 1400kg / h, the pump pressure is 0.35Mpa, the temperature of the slurry is controlled in the range of 115-125°C, the rotation speed of the scraper is 45-55rpm, the circulation rate of the membrane liquid is 12000-12500kg / h, and the spraying pressure o...

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Abstract

The present invention is integrated process and apparatus to complete the pelletizing, drying, filming and film-liquid separation of melt material in one set of apparatus. When water soluble delayed / controlled material is used, the heat energy of the molten material is utilized for pelletizing and curing in the liquid and eliminating water in the auxiliary system. When solvent type filming liquid is used, the solvent is recovered with the auxiliary system and the filming liquid is cooled in the system for circular use. Regulating the rotation speed of the grain forming and liquid separating disc can control the yield and film thickness conveniently, and the grain after filming is shaped in the post-treatment system for precise film thickness and regular grains. The present invention is suitable for pelletizing and coating of single-component or multiple-component delayed / controlled releasing fertilizer and similar material.

Description

technical field [0001] The invention relates to a method and equipment for producing molten material granulation coating film. More specifically, the single-component or multi-component molten material involved in the present invention completes the processes of granulation, drying, film coating, and film liquid separation in an integrated granulation and film coating machine. The invention is suitable for preparing single-component or multi-component slow-release / control-release granular fertilizer outer coating film, especially suitable for preparing single-component urea coating film, and is suitable for granulation coating film of molten materials in other industries. The invention also relates to a granulated coating production method with clean production, wide adjustment range and large operating flexibility. Background technique [0002] Data show that the utilization rate of chemical fertilizers in my country is about 30-35% (the fertilizer utilization rate in deve...

Claims

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Application Information

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IPC IPC(8): B01J2/00C05G3/00C05G5/00
CPCY02P20/10
Inventor 周端午
Owner 周端午
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