CN205048883U - Modular spray fluidized drying machine - Google Patents

Abstract

The utility model discloses a modular spray fluidized drying machine, including spray drying tower, fluidized drying machine, cyclone, sack cleaner and draught fan, the spray drying tower still including set up the discharge gate of bottom with set up play tuber pipe laterally, be provided with air inlet, feed inlet, discharge gate and gas vent on the fluidized drying machine, go out the air inlet that the tuber pipe passes through pipe connection fluidized drying machine, the discharge gate is connected to the feed inlet of fluidized drying machine through the feeder, the air exit of fluidized drying machine connects gradually cyclone, sack cleaner and draught fan, cyclone, sack cleaner bottom all are equipped with the discharge gate. The utility model discloses in, spray drying tower and fluidized drying machine use together, to the high material of aridity requirement, carry out preliminary drying in the spray drying tower, and the aridity of material reaches 0.5 -0.7, then carries out further drying in the fluidized drying machine, makes the aridity fall to below 0.3, can reduce energy consumption, energy saving by a wide margin.

Description

Combined spray fluidized dryer

technical field

The utility model relates to a combined spray fluidized dryer, which belongs to the technical field of drying equipment.

Background technique

The spray dryer is a kind of continuous atmospheric pressure dryer. The atomizer is used to disperse the material liquid into mist droplets, and the hot gas is used to dry the mist droplets to obtain the product. The main working process is: fresh air from the outside passes through the air filter, blower , into the air heater to increase the air temperature to about 160 ° C, and then sent to the drying tower. Before entering the drying tower, the hot air passes through the air uniform plate to distribute the hot air evenly, prevent the vortex, avoid the occurrence of coke powder, and ensure the drying effect. The material liquid to be dried is pumped to the atomizer by the pressure pump, the material liquid is sprayed out in the form of mist and mixed with hot air, the material particles absorb heat, the water evaporates instantly, and the powder is formed and falls downward. After a period of constant speed drying, The moisture is further evaporated, and the coarse particles fall into the conical bottom of the drying tower and are discharged. The mixture of dried material fine powder and low-temperature humid air is separated by a cyclone separator, the waste air is discharged by an exhaust fan, and the dry fine powder product falls and is continuously discharged by an unloader.

For materials whose dryness is required to be 1-3, the temperature of the waste air after separation by the spray dryer is about 50°C, and the heat contained is not high. If the dryness of the material is required to be below 0.3, the spray dryer can be used directly to achieve the predetermined dryness. , you need hot air above 250°C for drying, and the temperature of the mixed gas discharged from the drying tower can reach about 100°C, which consumes a lot of energy.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a combined spray fluidized dryer which reduces energy consumption and improves the dryness of materials.

The technical solution adopted by the utility model is: a combined spray fluidized dryer, including a spray drying tower, a fluidized dryer, a cyclone separator, a bag filter and an induced draft fan;

The top of the spray drying tower is provided with an atomizer, and the atomizer is connected to the trough, and the top of the spray drying tower is also provided with an air inlet pipe;

The spray drying tower also includes a discharge port arranged at the bottom and an air outlet pipe arranged at the side, and the fluidized dryer is provided with an air inlet, a feed port, a discharge port and an exhaust port, and the air outlet The pipe is connected to the air inlet of the fluidized dryer through a pipeline, and the outlet is connected to the feed port of the fluidized dryer through a feeder, and the exhaust outlet of the fluidized dryer is connected to the cyclone separator, the bag filter, and the air outlet in turn. Fans, cyclone separators, and bag filters are all equipped with discharge ports at the bottom.

In the utility model, the spray drying tower and the fluidized dryer are used together. For materials with extremely high dryness requirements, preliminary drying is carried out in the spray drying tower. Further drying is carried out in the middle to reduce the dryness to below 0.3, which can greatly reduce energy consumption and save energy.

Description of drawings

Fig. 1 is a schematic structural view of the combined spray fluidized dryer of the present invention.

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

detailed description

Example 1

As shown in Figure 1, the combined spray fluidized dryer includes a spray drying tower 1, a fluidized dryer 2, a cyclone separator 3, a bag filter 4 and an induced draft fan 5;

The top of the spray-drying tower is provided with an atomizer 6, and the atomizer 6 is connected with a trough, and the top of the spray-drying tower is also provided with an air inlet pipe 11;

The spray drying tower also includes a discharge port 12 arranged at the bottom and an air outlet pipe 13 arranged at the side, and the fluidized dryer is provided with an air inlet 21, a feed port 22, a discharge port 23 and an exhaust port 24. The air outlet pipe 12 is connected to the air inlet 21 of the fluidized dryer 2 through a pipeline, and the outlet 12 of the spray drying tower 1 is connected to the feed port 22 of the fluidized dryer 2 through a feeder, and the fluidized The air outlet 24 of the dryer is connected to the cyclone separator 3, the bag filter 4 and the induced draft fan 5 in sequence, and the bottoms of the cyclone separator 3 and the bag filter 4 are all provided with outlets.

When working, the feeding pump sends the liquefied material from the trough to the atomizer and sprays it out. The hot air at 220°C enters the drying tower and mixes with the mist material. The feed port enters the fluidized dryer, at this time the dryness of the large particles is about 0.5, the mixture of small particles and air is discharged from the air outlet pipe, and still enters the fluidized dryer from the air inlet of the fluidized dryer, the mixture The temperature is about 70-90°C, and the large particles are further dried in a fluidized dryer to reduce the dryness of the large particles to below 0.3.

Claims (1)

1. A combined spray fluidized dryer, comprising a spray drying tower, a fluidized dryer, a cyclone separator, a bag filter and an induced draft fan; The top of the spray drying tower is provided with an atomizer, and the atomizer is connected to the trough, and the top of the spray drying tower is also provided with an air inlet pipe; The spray drying tower also includes a discharge port arranged at the bottom and an air outlet pipe arranged at the side, and the fluidized dryer is provided with an air inlet, a feed port, a discharge port and an exhaust port, and the air outlet The pipe is connected to the air inlet of the fluidized dryer through a pipeline, and the outlet is connected to the feed port of the fluidized dryer through a feeder, and the exhaust outlet of the fluidized dryer is connected to the cyclone separator, the bag filter, and the air outlet in turn. Fans, cyclone separators, and bag filters are all equipped with discharge ports at the bottom.