CN215917310U - Spray fluidization granulation system - Google Patents

Abstract

The utility model discloses a spray fluidization granulation system, which comprises a fluidization tower mechanism, a primary cyclone separator, a secondary cyclone separator, a water film dust remover and a cooling mechanism, wherein an atomization nozzle is arranged at the upper part in a main tower, the upper part of the main tower is communicated with the upper part of the primary cyclone separator through a pipeline, the upper part of the primary cyclone separator is communicated with the upper part of the secondary cyclone separator through a pipeline, the upper part of the secondary cyclone separator is communicated with the water film dust remover through a pipeline, a built-in fluidized bed is arranged at the lower part of the main tower, the built-in fluidized bed is provided with a discharge hole, the discharge hole is communicated with a screening machine, an air outlet of a freezing dehumidifier is communicated with the screening machine through a pipeline, the screening machine is communicated with the cooling mechanism through a pipeline, and the other pipeline of the screening machine is communicated with the bottom of the secondary cyclone separator and the bottom of the primary cyclone separator in sequence and then returns to the upper part of the main tower. The utility model has little dust, can dry materials with strong thermoplasticity and hygroscopicity, and has high heat exchange rate and high heat utilization rate.

Description

Spray fluidization granulation system

Technical Field

The utility model relates to a spray fluidization granulation system.

Background

The spray fluidized granulation drying tower combines the spray drying technology and the built-in fluidized bed drying technology, and is mainly used for spray drying agglomeration or spray drying granulation. The existing drying technology is finished by adopting a spray dryer, but the existing drying equipment has poor drying effect on materials with strong thermoplasticity and hygroscopicity, poor heat exchange rate and low heat utilization rate. And more dust is generated in the traditional granulating process.

Disclosure of Invention

The utility model aims to provide a spray fluidization granulation system which has little dust, can dry materials with strong thermoplasticity and hygroscopicity, and has high heat exchange rate and high heat utilization rate.

In order to achieve the purpose, the technical scheme of the utility model is as follows: a spray fluidization granulation system comprises a fluidization tower mechanism, a first-stage cyclone separator, a second-stage cyclone separator, a water film dust remover and a cooling mechanism, wherein the fluidization tower mechanism comprises a main tower, an atomization spray head is arranged on the upper portion in the main tower, the upper portion of the main tower is communicated with the upper portion of the first-stage cyclone separator through a pipeline, the upper portion of the first-stage cyclone separator is communicated with the upper portion of the second-stage cyclone separator through a pipeline, the upper portion of the second-stage cyclone separator is communicated with the water film dust remover through a pipeline, the spray granulation system further comprises a freeze dehumidifier and a screening machine, the lower portion of the main tower is provided with a built-in fluidized bed, the built-in fluidized bed is provided with a discharge port, the discharge port is communicated with the screening machine, an air outlet of the freeze dehumidifier is communicated with the screening machine through a pipeline, the screening machine is communicated with the cooling mechanism through a pipeline, and another pipeline of the screening machine is communicated with the bottom of the second-stage cyclone separator and the bottom of the first-stage cyclone separator in turn, returning to the upper part of the main tower for circulation; the atomizing nozzle is provided with more than two atomizing nozzles.

Preferably, the device also comprises a flow adjusting baffle and an adjusting rod, wherein the adjusting rod extends into the main tower and is connected with the main tower in a vertically sliding manner, the flow adjusting baffle is positioned on the inner side of the discharge hole of the main tower and is fixed on the adjusting rod, and part of the flow adjusting baffle covers the discharge hole. The discharge amount of the materials is better controlled.

Preferably, the screening machine comprises a vibrating screen, the screening machine is divided into an upper cavity and a lower cavity through vibrating screen, the lower cavity is communicated with the bottom of the secondary cyclone separator through a pipeline, and the upper cavity is communicated with the cooling mechanism through a pipeline. Reasonable structure and forms the circular treatment of dust.

Preferably, the cooling mechanism comprises a cooling fan and a hopper which are communicated, and the hopper is connected with a subsequent packaging machine. And (4) feeding the formed material into a cooling fan and then into a packaging machine for packaging.

Preferably, the upper part of the main tower is provided with an upper blower and an upper heat source, the lower part of the main tower is provided with a lower blower and a lower heat source, the upper blower is connected with the upper heat source and communicated with the upper part of the main tower, and the lower blower is connected with the lower heat source and communicated with the lower part of the main tower. The circulating hot air in the new city is fluidized and dried.

Preferably, the atomizer head has more than two atomizer nozzles. The atomized liquid drops after being sprayed can be contacted with each other, so that the materials are better agglomerated.

Preferably, the water film dust collector is communicated with the induced draft fan and the silencer through pipelines.

After the structure is adopted, the built-in fluidized bed is arranged at the lower part of the main tower, and downward hot air at the upper part of the main tower and upward hot air of the built-in fluidized bed are collided to form atomized liquid drops which are fully mixed with the center of the hot air port, so that the heat transfer effect is enhanced. The hot air jet spreads to reach the bottom of the main tower cone and is deflected back upwards to separate dried particles from air, and the air forms an annular air curtain on the tower wall in the upward movement process, so that the material with high thermoplasticity and hygroscopicity can be dried. And the discharge gate is connected with the screening machine, and the screening machine separates fashioned material and dust, and the dust passes through second grade cyclone bottom and first-class cyclone bottom, and the subsidiary returns the dust of second grade cyclone bottom and first-class cyclone bottom to main tower upper portion and circulates the reagglomeration again, therefore the heat energy exchange rate is high, and heat utilization rate is high, and it is few to emit into atmospheric dust through the draught fan.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an enlarged view of section I of FIG. 1;

FIG. 3 is a schematic spray diagram of the atomizer head of FIG. 1;

fig. 4 is a top view of fig. 3.

Detailed Description

The present invention will be described in further detail with reference to the following examples, which are given in conjunction with the accompanying drawings.

Referring to fig. 1-4, a spray fluidization granulation system comprises a fluidization tower mechanism 1, a primary cyclone separator 2, a secondary cyclone separator 3, a water film dust collector 4 and a cooling mechanism 5, wherein the fluidization tower mechanism 1 comprises a main tower 11, an atomization nozzle 12 is arranged at the upper part in the main tower 11, the atomization nozzle 12 is provided with three atomization nozzles 121, the nozzle atomizes mist drops with an atomization angle of 65-75 degrees, and the mist drops between the nozzles have an agglomeration effect of mutual collision.

The upper part of the main tower 11 is provided with an upper blower 111 and an upper heat source 112, and the vertical downward hot air at the temperature of 180 ℃ and 220 ℃ input into the main tower 11 is fully mixed with the atomized liquid drops at the center of the hot air port, so that the heat transfer effect is enhanced.

The main tower 11 upper portion is through pipeline and 2 upper portions of one-level cyclone intercommunication, 2 upper portions of one-level cyclone are linked together through pipeline and 3 upper portions of second grade cyclone, 3 upper portions of second grade cyclone are linked together through pipeline and water film dust remover 4, the dust gets into one-level cyclone 2 in proper order, second grade cyclone 3 and water film dust remover 4, remove dust to the dust and handle, and draw through draught fan 9, the atmosphere of discharging in the pipeline of follow muffler 10.

Referring to fig. 1, the present invention further includes a freeze dehumidifier 6 and a sieving machine 7, the lower portion of the main tower 11 has a built-in fluidized bed 8, the built-in fluidized bed 8 is provided with a lower fan 113 and a lower heat source 114, and hot air is vertically upward from the bottom of the main tower 11 and is opposite-directed to hot air vertically downward from an upper blower 111 and an upper heat source 112.

Referring to fig. 2, the built-in fluidized bed 8 is provided with a discharge port 13, the discharge port 13 is communicated with the sieving machine 7, the sieving machine 7 comprises a vibrating screen 73, the sieving machine 7 is divided into an upper cavity 71 and a lower cavity 72 by the vibrating screen 73, the lower cavity 72 is communicated with the bottom of the secondary cyclone separator 3 by a pipeline, and the bottom of the secondary cyclone separator 3 is communicated with the bottom of the primary cyclone separator 2 and then returns to the upper part of the main tower 11 for circulation; the upper chamber 71 is connected to the cooling mechanism 5, the cooling fan 51, and the hopper 52 through a pipe, and the hopper 52 is connected to a subsequent packaging machine. The oscillating screen 73 separates qualified materials from dust, the materials are located in the upper cavity 71, and the materials can be pulled into the hopper 52 along with the cooling fan 51 to be packaged. And unqualified dust enters the lower cavity 72, and is circularly treated in the main tower 11 together with the dust separated by the primary cyclone separator 2 and the secondary cyclone separator 3. The heat exchange rate is high, the heat utilization rate is high, and little dust is discharged into the atmosphere through the draught fan 9.

Referring to fig. 2, the device further comprises a flow adjusting baffle 14 and an adjusting rod 15, wherein the adjusting rod 15 extends into the main tower 11 and is connected with the main tower 11 in a vertically sliding manner, and the flow adjusting baffle 14 is located on the inner side of the discharge port 13 of the main tower 11 and is fixed on the adjusting rod 15 to partially shield the discharge port 13. The main tower 11 is provided with a vertical long hole, the adjusting rod 15 penetrates through the long hole, the adjusting rod 15 can be a bolt, the adjusting baffle 14 moves downwards to shield the discharge hole 13, and the adjusting baffle 14 adjusts upwards to enlarge the discharge hole 13, so that the discharge amount of materials is adjusted.

Referring to fig. 1, when the utility model is used, materials are sprayed into the main tower 11 from the top of the tower through the high-pressure pump, fog drops with 65-75 degrees of atomization angle are atomized through the atomizing nozzle 12, the fog drops among the atomizing nozzles 121 have the agglomeration effect of mutual collision, the fog drops are contacted with hot air with very low relative humidity, the hot air and the hot air generate strong heat exchange instantly, and the heat energy of the hot air is supplied to the fog drops to evaporate the water. A built-in fluidized bed 8: the material is fluidized, dried or granulated in the built-in fluidized bed 8 stably and uniformly at a low temperature of 50-80 ℃ in a low-humidity state, and is formed into larger particles through fluidized drying or fluidized agglomeration, and the particles collide with each other during fluidization, so that the specific gravity of the material is increased, and the larger particles are formed. Because the water vapor is discharged from the upper part, fine powder or fine particles are suspended in the tower, when the fine powder or the fine particles are agglomerated into larger particles, the specific gravity is increased, the particles are reduced into a built-in fluidized bed for drying, the materials are dried into particles with qualified final water content, and the qualified particles enter a sieving machine 7 and a cooling mechanism 5 from a discharge hole 13 for cooling and packaging.

About 15-20% of fine powder and wet air are pumped into the primary cyclone separator 2, the secondary cyclone separator 3 and the water film dust collector 4 from an air outlet pipe at the top of the main tower 11 by the induced draft fan 9 for separation, and tail gas is discharged into the atmosphere through the induced draft fan 9. The fine powder separated from the first-stage cyclone separator 2, the second-stage cyclone separator 3 and the sieving machine 7 returns to the main tower 11 through a powder returning pipeline to be agglomerated with the atomized material beads. Therefore, the utility model has high heat energy exchange rate and high heat energy utilization rate, and has little dust discharged into the atmosphere through the draught fan.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims (7)

1. The utility model provides a spray fluidization granulation system, includes fluidization tower mechanism (1), one-level cyclone (2), second grade cyclone (3), water film deduster (4) and cooling body (5), fluidization tower mechanism (1) is including main tower (11), and upper portion is equipped with atomizer (12) in main tower (11), and main tower (11) upper portion is linked together through pipeline and one-level cyclone (2) upper portion intercommunication, one-level cyclone (2) upper portion and second grade cyclone (3) upper portion through pipeline, and second grade cyclone (3) upper portion is linked together through pipeline and water film deduster (4), its characterized in that: the system is characterized by further comprising a freezing dehumidifier (6) and a screening machine (7), wherein a built-in fluidized bed (8) is arranged at the lower part of the main tower (11), a discharge port (13) is formed in the built-in fluidized bed (8), the discharge port (13) is communicated with the screening machine (7), an air outlet of the freezing dehumidifier (6) is communicated with the screening machine (7) through a pipeline, the screening machine (7) is communicated with the cooling mechanism (5) through a pipeline, and the other pipeline of the screening machine (7) is communicated with the bottoms of the secondary cyclone separator (3) and the primary cyclone separator (2) in sequence and then returns to the upper part of the main tower (11) for circulation; the atomizer (12) has more than two atomizing nozzles (121).

2. The spray fluidized granulation system of claim 1, wherein: the device is characterized by further comprising a flow adjusting baffle (14) and an adjusting rod (15), wherein the adjusting rod (15) extends into the main tower (11) and is connected with the main tower (11) in a sliding mode up and down, the flow adjusting baffle (14) is located on the inner side of the discharge hole (13) of the main tower (11) and is fixed on the adjusting rod (15), and the discharge hole (13) is partially shielded.

3. The spray fluidized granulation system of claim 1, wherein: the screening machine (7) comprises a vibrating screen (73), the screening machine (7) is divided into an upper cavity (71) and a lower cavity (72) through the vibrating screen (73), the lower cavity (72) is communicated with the bottom of the secondary cyclone separator (3) through a pipeline, and the upper cavity (71) is communicated with the cooling mechanism (5) through a pipeline.

4. The spray fluidized granulation system of claim 1, wherein: the cooling mechanism (5) comprises a cooling fan (51) and a hopper (52) which are communicated, and the hopper (52) is connected with a subsequent packaging machine.

5. The spray fluidized granulation system of claim 1, wherein: the upper part of the main tower (11) is provided with an upper air blower (111) and an upper heat source (112), the lower part of the main tower (11) is provided with a lower air blower (113) and a lower heat source (114), the upper air blower (111) is connected with the upper heat source (112) and communicated with the upper part of the main tower (11), and the lower air blower (113) is connected with the lower heat source (114) and communicated with the lower part of the main tower (11).

6. The spray fluidized granulation system of claim 1, wherein: the atomizer (12) has three atomizer nozzles (121).

7. The spray fluidized granulation system of claim 1, wherein: the water film dust collector (4) is communicated with the induced draft fan (9) and the silencer (10) through pipelines.

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