A kind of spiral fluidized bed granulation method and its equipment

A fluidized bed granulation and fluidized bed technology, applied in the direction of powder suspension granulation, etc., can solve the problems of dust pollution, granulation quality influence, separation difficulty, etc., and achieve the effect of reducing dust pollution

Active Publication Date: 2016-01-13
SHANDONG ZOETICLAND BIOLOGICAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is a problem here. When the particle size of the material is very different (the large particle size is 4mm, while the small particle size is below 200 mesh), when designing the fluidized bed, if the design is based on large particles, especially when there are many light powders, Often the wind speed has not reached the critical value of larger particles, and the small particles have been taken away by the wind, which affects the quality of granulation, and also brings difficulties to the next step of separation, and also causes serious dust pollution. Particle design, large particles can not be suspended, it can be seen that the traditional fluidized bed is not suitable for powder material granulation

Method used

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  • A kind of spiral fluidized bed granulation method and its equipment
  • A kind of spiral fluidized bed granulation method and its equipment

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Embodiment 1

[0019] A kind of spiral fluidized bed granulation method, it is characterized in that: comprise the following steps: A, the step that granulation binder is melted: After fully mixing the mixture of 80% urea and the ammonium chloride of weight 20%, add A total of 6% of water is put into the melting kettle 4 and heated until it is completely melted, and the temperature of the molten liquid is 100°C for standby; B, the steps of mixing, heating and transporting materials to the spiral fluidized bed group: in the material mixer 9, press The weight ratio is 30% monoammonium phosphate, 20% potassium sulfate, 10% potassium chloride, 20% potassium dihydrogen phosphate, 10% potassium nitrate and 10% trace elements. Mix the above materials evenly, and the materials should not have crystals. Water and materials enter the rotary drum heater 13 after they are mixed, use the hot blast stove 14 to generate heat through mass transfer and heat transfer, and heat the materials to 95°C. If urea is...

Embodiment 2

[0021] Embodiment 2, a kind of spiral fluidized bed granulation method is characterized in that: comprise the following steps: A, the step that granulation binder is melted: the ammonium chloride that weight is 85% urea and weight 15% After the mixture is fully mixed, add 10% of the total amount of water and put it into the melting kettle 4 to heat until it is completely melted, and the temperature of the molten liquid is 110°C for standby; B, the steps of mixing, heating and transporting materials to the spiral fluidized bed group: In the mixer 9, add 30% diammonium phosphate, 30% potassium sulfate, 15% potassium dihydrogen phosphate, 10% dipotassium hydrogen phosphate, 10% potassium nitrate and 5% trace elements by weight in proportion, and mix the above materials , the material can not contain crystal water, after the material is mixed, it enters the rotary drum heater 13, uses the hot blast stove 14 to generate heat through mass transfer heat transfer, and heats the materia...

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Abstract

The invention discloses a spiral fluidized bed granulating method and equipment for realizing the spiral fluidized bed granulating method. The spiral fluidized bed granulating method comprises the following steps: A. melting granulating adhesive; B. mixing materials, heating and conveying to a spiral fluidized bed unit; C. granulating; D. screening granulated materials in the step C; and E. collecting dusts. The equipment for realizing the spiral fluidized bed granulating method comprises a granulating adhesive melting and conveying device, a material mixing, heating and conveying device, a granulating device, a screening device and a dust collecting device. The spiral fluidized bed granulating method and the equipment have the beneficial effects that a mechanical method is adopted to perform powdery material granulation, and the method and the equipment can be suitable for powdery material granulation, can overcome the defect that the traditional fluidized bed adopts wind powder as power and is not suitable for powdery material granulation, and can reduce dust pollution.

Description

technical field [0001] The invention relates to the field of fluidized bed granulation method and equipment, in particular to a spiral fluidized bed granulation method and equipment. Background technique [0002] The traditional fluidized bed is driven by wind. When the wind speed reaches a certain level (the specific gravity of the material, the particle size corresponds to the wind speed), the solid particles begin to suspend, thus realizing fluidization. There is a problem here. When the particle size of the material is very different (the large particle size is 4mm, while the small particle size is below 200 mesh), when designing the fluidized bed, if the design is based on large particles, especially when there are many light powders, Often the wind speed has not reached the critical value of larger particles, and the small particles have been taken away by the wind, which affects the quality of granulation, and also brings difficulties to the next step of separation, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J2/16
Inventor 王维超辛寒晓
Owner SHANDONG ZOETICLAND BIOLOGICAL TECH
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