CN2193202Y - Level air distribution plate for boiling bed - Google Patents

Abstract

The utility model provides an air distribution plate with level flow for using in a boiling bed. The utility model can improve the quality of fluidization, and can avoid the defect that granules can leak to the part below a distributor existing in traditional distributors with a porous plate. In a circular boiling bed or a boiling bed of other shapes, circular rings of different sizes, which are made of 4 to 16 thin plates, are concentrically stacked layer by layer (flexible material is used for the outmost layer). Pads of the thickness of from 0.1 to 5 mm are used for maintaining gaps in a distance as the thickness, so that air for fluidization can flow out from the gaps. A vibration generator and a pneumatic discharge device are arranged at the central part, so that an inner-vibrating boiling bed capable of discharging easily can be constituted.

Description

Level air distribution plate for boiling bed

The utility model belongs to the critical component in the fluidization technology field, is applicable to occasion uses such as fluidized granulating.

Existing dispersion plate has porous template, net type, flap type etc., and the distribution grid of these patterns exists such or such shortcoming, even is difficult to run well.For example, leak down the direction that material, air flow to distribution grid and make the particle of fluidisation do random motion, it is inhomogeneous etc. that particle little to proportion in addition, the crude mobile difference in surface is easy to generate bridge formation, fluidisation.

The purpose of this utility model is to provide a kind of and builds bridge when avoiding the existing equipment boiling granulating, problems such as fluidisation is inhomogeneous and simple in structure, easy to operate novel distribution grid is more widely used in industries such as chemical industry, medicine and food industry in the hope of making ebullated bed.

Task of the present utility model realizes with following method: proposed the notion of horizontal flow dispersion plate and designed concrete structure.The structure of this kind distribution grid is that the flexible material annulus 1 of the different sizes (being decided by instrument size) made by 4～16 thin plates in the ebullated bed of shapes such as circle successively stacks with one heart, and make the space that keeps this thickness between each annulus 1 with the pad 2 of 0.1～5mm thickness, with so that fluidizing gas from this space, flow out.The air-flow of particle by flowing out from all annulus 1 gap levels; in circular ebullated bed along dispersion plate 3 surfaces to central motion, air-flow and particle come together in after the central authorities upwards turbulent, are dispersed to periphery again; formation is similar to the fluidised form of spouted bed, makes the regular particle of form.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the local structure for amplifying schematic diagram of part 4 among Fig. 1.

Describe details and working condition in detail below in conjunction with Fig. 1 and Fig. 2 according to the concrete device that the utility model proposes: the utility model by design in circular or other shape ebullated bed flexible material annulus 1, pad 2, distribution grid 3, drive glassware 4 and vibration machine 5 is formed.Driving glassware 4 is made up of cover plate 6, spring 7, piston 8, air inlet pipe 9 and drainage conduit 10 again.

The annulus 1 of the different sizes of being made by 4～16 thin plates in the ebullated bed of shapes such as circle (deciding on instrument size) successively stacks (outermost layer use flexible material) with one heart, and make the space that keeps this thickness between each annulus 1 with the pad 2 of 0.1～5mm thickness, fluidizing gas can be flowed out from this space.The size of percent opening, the thickness of available pad 2 is regulated.Imperial glassware 4 is positioned at the centre of ebullated bed, and vibration machine 5 is positioned at its below.In imperial glassware 4 structures, cover plate 6 is positioned at the top, and spring 7 and piston 8 are placed in the middle, and air inlet pipe 9 is positioned at a side of bottom, and drainage conduit 10 is positioned at the top of opposite side or homonymy.

The air-flow of particle by flowing out from all annulus 1 gap level, in shape ebullated beds such as circle along dispersion plate 3 surfaces to central motion, air-flow and particle come together on the mediad turbulent, are dispersed to periphery again, form the fluidised form that is similar to spouted bed.The nowed forming of this kind particle is more regular, and the irregular particle of size distribution is also had fluid effect preferably.All annulus combinations of the present utility model, can apply power to it with vibration machine when needed, strengthen the up-down vibration amplitude, constitute the internal-vibration type ebullated bed, and can utilize pneumatic discharge device is set in shape ebullated beds such as circle, by compressed air with particle transport to assigned address, make the emptying of bed endoparticle, thereby remove batch turning operation from.Pneumatic imperial glassware 4 is to utilize from air inlet pipe 9 to import compressed air, rises cover plate 6, simultaneously to drainage conduit 10 ejection compressed air, force feed material.Flow to assigned address through conduit, and the part of below the cover plate 6 that lifts, leading to bed limit formation low pressure, with the particle suction of fluidisation, until exhaustion.

The utility model is because air-flow and cause particle to flow greatly being that flatly from coil to coil pushes to the center, therefore can avoiding building bridge and turbulent phenomenon.And, can avoid Lou material because of each layer annulus 1 mutual closed assembly, this is the most suitable to the strict material that prevents to mix batch and should not be heated for a long time etc.The nowed forming of this kind air-flow and particle is more regular, promptly by periphery to the center, lift by the center again and flow back to periphery, more favourable to fluidized granulating and inert particle fluidized drying, be good also to the motion of larger particles under the bigger situation of size distribution than orifice-plate type distribution apparatus commonly used.

Claims (3)

1, a kind of ebullated bed horizontal air distribution grid, the annulus 1 that it is characterized in that in the ebullated bed of shapes such as circle the different sizes (deciding on instrument size) made by 4～16 thin plates successively stacks with one heart, and make the space that keeps this thickness between each annulus 1 with the pad 2 of 0.1～5mm thickness, fluidizing gas can be flowed out from this space, the thickness of the big or small available pad 2 of percent opening is regulated, imperial glassware 4 is positioned at the centre of ebullated bed, and vibration machine 5 is positioned at its below.

2, by the described the sort of ebullated bed horizontal air distribution grid of claim 1, it is characterized in that outermost layer annulus 1 uses flexible material, and make horizontal flow gas distribution grid up-down vibration with vibration machine 5, constitute the internal-vibration type ebullated bed.

3, by the described the sort of ebullated bed horizontal air distribution grid of claim 1, it is characterized in that cover plate 6 is positioned at the top in imperial glassware 4 structures, spring 7 and piston 8 are placed in the middle, and air inlet pipe 9 is positioned at a side of bottom, and drainage conduit 10 is positioned at the top of opposite side or homonymy.

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