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Low-tower small-granule making process and low-tower small-granule making system for fertilizer

A technology of fertilizer granules and small granules, applied in fertilizer mixtures, solid/semi-solid fertilizers, granulation in rotating discs/pots, etc., can solve the problems of impurity clogging, low cost, etc. The effect of solving impurity blockage

Pending Publication Date: 2021-06-22
SHENZHEN BATIAN ECOTYPIC ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention overcomes the deficiencies in the prior art, and provides a low-tower fertilizer granulation process, using the principle of centrifugal granulation to produce 0.5-2.5mm fertilizer granules, and at the same time, by increasing the granule outlet to more than 6mm, the impurity is eliminated Blockage problem; by reducing the height of the prilling tower, the product can be obtained at a lower cost than the high tower prilling method

Method used

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  • Low-tower small-granule making process and low-tower small-granule making system for fertilizer
  • Low-tower small-granule making process and low-tower small-granule making system for fertilizer
  • Low-tower small-granule making process and low-tower small-granule making system for fertilizer

Examples

Experimental program
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Effect test

Embodiment 1

[0084] Such as Figure 1 to Figure 3 Shown, the low tower of a kind of fertilizer makes small granule technique, and this technique comprises the following steps:

[0085] S1: Add the solid particle mixture raw material A, raw material B and raw material C into the first-level tank 11, the second-level tank 12 and the third-level tank 13, and melt it into a slurry under the action of a high temperature of 120-170 ° C, and then step by step After dissolving and mixing, a mixed slurry of raw material A, raw material B and raw material C is formed in the tertiary tank 13; There is a steam heating device, and the steam heating device is equipped with a temperature sensor and a steam inlet regulating valve to control the amount of heating steam; when the temperature sensor detects that the temperature of the slurry is higher than the set temperature, the steam inlet regulating valve reduces the opening, reducing The amount of steam used for heating reduces the temperature; when th...

Embodiment 2

[0131] One of the embodiments of the present invention, such as Figure 15 As shown, the main technical solutions of this embodiment are the same as those of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here. The difference between this embodiment and Embodiment 1 is that: the inner lower end of the tower is provided with a cooling device, the cooling device is an air-cooled cooling device, the cooling device is an air-cooled cooling device 25b, and the air-cooled cooling device 25b Including an electric regulating valve 253b, an induced draft fan 252b and a heat exchange fin 24b; the electric regulating valve 253b and the induced draft fan are arranged outside the tower body and the electric regulating valve 253b is connected to the inlet of the induced draft fan 252b; multiple The heat exchange fins 24b are vertically arranged at the lower end of the tower body 2, and the two ends of each heat exchang...

Embodiment 3

[0133] One of the embodiments of the present invention, such as Figure 16 with Figure 17 As shown, the main technical solution of this embodiment is the same as that of Embodiment 1 or Embodiment 2, and the features not explained in this embodiment are explained in Embodiment 1 or Embodiment 2, and will not be repeated here. The difference between this embodiment and Embodiment 1 or Embodiment 2 is that it also includes a plurality of receiving hoppers 27 arranged at the bottom of the granulation tower, and a first belt conveyor 24 is correspondingly provided under each receiving hopper 27, A plurality of belt conveyors are arranged in parallel; a second belt conveyor 29 is arranged near the same end of each of the first belt conveyors 24; The first belt conveyor 24 is transported to the second belt conveyor 29, and the second belt conveyor 29 transports the fertilizer granules to the subsequent working section. A cooling fan 28 is provided above the receiving hopper 27 fo...

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Abstract

The invention discloses a low-tower small-granule making process and a low-tower small-granule making system for a fertilizer. The low-tower small-granule making system comprises a pulping device, a centrifugal granulation disc, a granulation tower and a material receiving mechanism, the slurrying device is used for melting fertilizer raw materials through heating and conveying the melting liquid into an atomization granulation disc in a tower body of the granulation tower, the atomization granulation disc is driven by a motor to rotate at a high speed, the melting liquid is centrifugally thrown out and atomized at a high speed, and atomized liquid drops of the centrifugally thrown-out melting liquid are cooled and solidified into small particles through a free falling body in the tower body; the materials fall into a material collecting mechanism at the bottom of the tower to be collected; according to the invention, fertilizer particles of 0.5-2.5 mm are manufactured by using a centrifugal granulation principle; meanwhile, the problem of impurity blockage is solved by enlarging centrifugal granulation holes to be more than 6mm; by enlarging the diameter of the granulation tower and reducing the height of the granulation tower, the cost is lower than that of a high-tower granulation mode, and products are obtained.

Description

technical field [0001] The invention relates to the technical field of low-tower granulation of fertilizers, in particular to a low-tower granulation process of fertilizers. Background technique [0002] At present, most of the fertilizer granules in the market are 1.00mm-4.75mm or 3.35mm-5.60mm particle size products. With the development of various fertilization technologies, formulation processes and fertilization facilities, the market demand for 0.5-2.5mm micro-particle fertilizers is increasing. increase. But at present there is no special production process to produce this type of product, such as adopting the patent "[CN] method, system and fertilizer for producing compound fertilizer by high tower granulation-CN108707000A", "CN] a kind of high tower granulation to produce urea-based compound Fertilizer method - CN102584395A", "[CN] High tower granulation method and equipment for producing granular compound fertilizer - CN1213001C" in the high tower granulation tech...

Claims

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Application Information

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IPC IPC(8): C05G5/12B01J2/14
CPCC05G5/12B01J2/14
Inventor 华建青张建军刘法安孔亦周李恒彪刘进波
Owner SHENZHEN BATIAN ECOTYPIC ENG
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