CN205048885U - Novel fluidized bed dryer - Google Patents

Abstract

The utility model discloses a novel fluidized bed dryer, including the fluidized bed shell, set up in the gas vent at fluidized bed shell top, set up in the feed inlet on fluidized bed shell left side upper portion, set up in the air inlet of fluidized bed shell bottom, still include upper and lower fluidized bed, baffle, gas flow distribution device, upper and lower discharge gate and air current compensating pipe, the gas flow distribution device is including being responsible for and the looped pipeline, the person in charge is connected with the air inlet on the fluidized bed shell, the looped pipeline is connected with the air current compensating pipe, the air current compensating pipe sets up in the fluidized bed shell, be equipped with a plurality of funnel type opening on the air current compensating pipe. The utility model discloses earlier grade the through -put screen cloth, coarse grain footpath and particulate material granule directly respectively last fluidized bed under and the fluidized bed carry out the drying to carry out the hot -air compensation to the material granule of last fluidized bed and supply with, so that it is powerful in fluidized bed material down to go up wind that the fluidized bed material accepted, make the material reach same degree of drying, improvement finished product quality.

Description

Novel fluidization bed dryer

Technical field

The utility model relates to a kind of Novel fluidization bed dryer, belongs to drying equipment technical field.

Background technology

Fluidization technique originates from nineteen twenty-one.Fluidized bed dryer is also known as fluid-bed dryer, and fluidized drying refers to that drying medium makes solid particle under fluidized state, carry out dry process.Why fluidized drying is developed widely, mainly contains following advantage:

(1) because material and drying medium contact area are large, material constantly carries out fierceness and stirs in bed simultaneously, so heat-transfer effect is good, heat capacity coefficient greatly, can reach (2.3-7.0) × kW/m3K;

(2) due to uniformity of temperature profile in fluid bed, thus the overheated of any local of product is avoided, so it is dry to be specially adapted to some heat sensitive material;

(3) can continued operation be carried out in same equipment, also can carry out intermittently operated;

(4) time of staying of material in drier, can adjust on demand, so product moisture content is stablized;

(5) drying device itself does not comprise mechanical moving element, thus the investment cost of equipment is cheap, and maintenance load is less.

In China, fluid-bed drying technology has been widely used in chemical fertilizer, pigment, polyethylene, the aspects such as bis-terephthalate, medicine material, plastics.

The material of current fluid bed dryer often all particle diameters all flows on same bed surface, and the wind that the material of different-grain diameter accepts is strong the same with drying time, causes dry materials degree difference, affects end product quality.

Utility model content

The purpose of this utility model overcomes the deficiencies in the prior art, provide a kind of by raw material classification to reach the Novel fluidization bed dryer of optimum drying effect.

The technical solution adopted in the utility model is: a kind of Novel fluidization bed dryer, comprises fluid bed shell, is arranged at the exhaust outlet of fluid bed cover top portion, is arranged at the charging aperture of fluid bed shell left upper portion, is arranged at the air inlet of fluid bed outer casing bottom;

It is characterized in that: also comprise fluid bed, fluidized bed at elevated, baffle plate, flow distributor, top discharge mouth, lower discharge port and air-flow compensating pipe;

Described upper fluid bed and fluidized bed at elevated are arranged in fluid bed shell, and upper fluid bed is formed by connecting by sifting bed and fluid bed, and described sifting bed is horizontally placed on the side near charging aperture, and fluid bed, along the downward-sloping setting in material direction, is connected with top discharge mouth; Described fluidized bed at elevated, along the downward-sloping setting in material direction, is connected with lower discharge port; Baffle plate is arranged in fluid bed shell, directly over sifting bed and fluid bed coupling part;

Described flow distributor comprises supervisor and looped pipeline, described supervisor is connected with the air inlet on fluid bed shell, described looped pipeline is connected with air-flow compensating pipe, and described air-flow compensating pipe is arranged in fluid bed shell, and described air-flow compensating pipe is provided with several funnel type openings.

Material is first carried out classification by screen cloth by the utility model, the material particles of coarse grain footpath and fine grain carries out drying at upper fluid bed and fluidized bed at elevated respectively, and hot-air compensation supply is carried out to the material particles of upper fluid bed, powerful in fluidized bed at elevated material with the wind making upper fluidised bed material accept, make coarse grain footpath material on fluid bed reach same degree of drying with fine grain material on fluidized bed at elevated, improve end product quality.

Accompanying drawing explanation

Fig. 1 is the structural representation of Novel fluidization bed dryer of the present utility model.

Below in conjunction with drawings and Examples, the utility model is further described.

Detailed description of the invention

Embodiment 1

As shown in Figure 1, this Novel fluidization bed dryer, comprises fluid bed shell 1, is arranged at the exhaust outlet 11 of fluid bed cover top portion, is arranged at the charging aperture 12 of fluid bed shell left upper portion, is arranged at the air inlet 13 of fluid bed outer casing bottom;

It is characterized in that: also comprise fluid bed 2, fluidized bed at elevated 3, baffle plate 4, flow distributor 5, top discharge mouth 6, lower discharge port 7 and air-flow compensating pipe 8;

Described upper fluid bed 2 and fluidized bed at elevated 3 are arranged in fluid bed shell 1, upper fluid bed 2 is formed by connecting by sifting bed 21 and fluid bed 22, described sifting bed 21 is horizontally placed on the side near charging aperture 12, and fluid bed 22, along the downward-sloping setting in material direction, is connected with top discharge mouth 6; Described fluidized bed at elevated 3, along the downward-sloping setting in material direction, is connected with lower discharge port 7; Baffle plate 4 is arranged in fluid bed shell 1, directly over sifting bed 21 and fluid bed 22 coupling part;

Described flow distributor 5 comprises supervisor 51 and looped pipeline 52, described supervisor 51 is connected with the air inlet 13 on fluid bed shell 1, described looped pipeline 52 is connected with air-flow compensating pipe 8, described air-flow compensating pipe 8 is arranged in fluid bed shell 1, and described air-flow compensating pipe 8 is provided with several funnel type openings 81.

During work, liquefied mass is sent into sifting bed from charging aperture by feeding engine, and on sifting bed, the material of fine grain drains on fluidized bed at elevated, and the material in coarse grain footpath is stayed on fluid bed, carries out fluidized drying respectively.The steam major part of heating enters in fluid bed shell by the supervisor of flow distributor, the material of fluidized bed at elevated and upper fluid bed is heated, small part enters air-flow compensating pipe from looped pipeline, the material of upper fluid bed is heated, control supervisor and the vapor flow rate ratio of looped pipeline, make the material of fluidized bed at elevated obtain drying to the same extent.

Claims (1)

1. a Novel fluidization bed dryer, comprises fluid bed shell, is arranged at the exhaust outlet of fluid bed cover top portion, is arranged at the charging aperture of fluid bed shell left upper portion, is arranged at the air inlet of fluid bed outer casing bottom;

It is characterized in that: also comprise fluid bed, fluidized bed at elevated, baffle plate, flow distributor, top discharge mouth, lower discharge port and air-flow compensating pipe;

Described upper fluid bed and fluidized bed at elevated are arranged in fluid bed shell, and upper fluid bed is formed by connecting by sifting bed and fluid bed, and described sifting bed is horizontally placed on the side near charging aperture, and fluid bed, along the downward-sloping setting in material direction, is connected with top discharge mouth; Described fluidized bed at elevated, along the downward-sloping setting in material direction, is connected with lower discharge port; Baffle plate is arranged in fluid bed shell, directly over sifting bed and fluid bed coupling part;

Described flow distributor comprises supervisor and looped pipeline, described supervisor is connected with the air inlet on fluid bed shell, described looped pipeline is connected with air-flow compensating pipe, and described air-flow compensating pipe is arranged in fluid bed shell, and described air-flow compensating pipe is provided with several funnel type openings.