CN206056118U - Circular fluid-bed dryer - Google Patents

Abstract

The utility model discloses a kind of circular fluid-bed dryer, belongs to technical field of chemical production equipment, solve that traditional ebullated bed structure design is unreasonable, drying and dehydrating effect is undesirable, Turbogrid plates are easily blocked, not environmentally the problems such as.It is main to include heat exchanger, overlook rounded round shape bed body, cyclone separator, fan with low voltage, exhaust duct, round shape bed body is provided with charging aperture, discharging opening, circulation air exhauster and Turbogrid plates, this utility model smart structural design, possesses the advantages of hot blast is uniform, boiling effect is good, boiling effect is good, environmentally friendly, Turbogrid plates are not blocked.

Description

Circular fluid-bed dryer

Technical field

This utility model belongs to technical field of chemical production equipment, and specifically, more particularly to a kind of circular ebullated bed is dry Dry device.

Background technology

Chlorinated polyethylene (CPE) is a kind of chlorine-containing polymer by obtained in polyethylene Jing chlorinations, with stable chemistry knot Structure, excellent thermostability, resistance to ag(e)ing, anti-flammability, tolerance to cold, oil resistivity, free coloring, chemical proofing, resistance to ozone Property, electrical insulating property and the good compatibility and processability etc., in plastics industry, can be used as polrvinyl chloride (PVC), polypropylene (PP), the modifying agent of the plastics such as polystyrene (PS) and acrylonitrile-butadiene-styrene copolymer (ABS).CPE is used as hard The modifying agent of PVC, can improve impact resistance, weatherability and the processability of PVC, for manufacturing extrusion sheet, tubing, building materials, plate Material, injection tubing and electrical component.Modifying agent of the CPE as soft or semi-rigid PVC, can improve its moisture-proof, electrical resistance, Handling property and processability, be widely used in make electric wire, appliance shell, corrosion protective lining, electrical component, cable cover(ing), flexible pipe, Packing ring, electrical adhesive tape, waterproof roll, thin film and adhesive tape etc..Jing CPE modified PVC, its brittleness temperature can be low to -40 DEG C, And the PVC that weatherability, thermostability and chemical stability much superelevation are modified with other products, in industries such as building materials, water conservancy, communications In be used widely.Water phase suspension is the main method of inside and outside production CPE at present, with operation balance, chlorine utilization The advantages of height, stable product, good product quality.But during water phase suspension production CPE, equipment is perishable, and the CPE of production is produced Product moisture content up to 35% or so, therefore drying capacity becomes the key factor of restriction process units ability orientation.Due to CPE Kernel structure is loose Cotton Gossypii ball-type, and granule is relatively thick compared with general resin, highly difficult to the moisture content inside removing granule, is needed 5-6 times is repeated, the requirement of finished product water content≤0.3% is can be only achieved.During constant temperature (80 DEG C), CPE materials it is dry Substantially there are two turnovers in dry curve, i.e. the first and second critical moisture contents, the second critical moisture content are expressed as inside CPE containing wet Amount, its diffusion velocity are slower, and this phenomenon is showed in pneumatic conveying drying more substantially, when CPE water content drops to 2% or so, Dehydration is relatively difficult, and rate of drying is substantially slow.Feature is dried according to CPE, using fluid-bed dryer be dried its effect compared with For ideal.For many years, enterprise is all dried CPE with rectangle ebullated dryer, and dried product can reach required quality Index.

But in actual mechanical process for many years, it is found that traditional ebullated dryer is dried CPE and has the following disadvantages：

1. bed body plan view shape is rectangle, enters bed from a total blast pipe point to entering 4 by the hot blast that fin spreads out of Individual inlet air plenum, often forms air intake and distributes irregular, and each position degree of dehydration of dried material is uneven.Particularly four angles of bed body Fall dead angle, then drying and dehydrating effect is undesirable, and dried bed body corner CPE material fugitive constituents are exceeded up to several times；

2. each position rate of drying of traditional ebullated bed is variant, to make dried CPE fugitive constituents up to standard, need to extend drying Time, energy waste are serious.The dry materials effect in four corners of bed body is undesirable, often needs to open door, is overturn with hook The CPE materials on corner side, which is cumbersome, extends the time, even so, dead angle position still easily forms caking；

3. the height that existing fluid-bed dryer is generally adopted forces down air quantity machine windward, and blast is big, CPE fine powders is taken out windward Go out, although have cyclone separator to reclaim fine powder, but fine powder runs material situation still seriously, according to measuring and calculating, the fine powder in airpillow-dry stage is damaged Consumption have impact on product yield up to 2% or so, and loss economic benefit is also considerable；

4. chlorinated polyethylene olefinic thermoplastic resin, is rich in elasticity well in addition, easily condenses, particularly do in dry run In the dry later stage, seldom, material blocks screen to CPE moisture content due to certain viscoelasticity, during high temperature, needs parking to tear open after long-play Cleaning is unloaded, is bothered very much.

The content of the invention

To solve the above problems, the utility model discloses a kind of circular fluid-bed dryer.

This utility model is achieved through the following technical solutions：

A kind of circular fluid-bed dryer, including heat exchanger, overlook rounded round shape bed body, cyclone separator, low pressure Blower fan, exhaust duct, the round shape bed body are provided with charging aperture, discharging opening and Turbogrid plates, the heat exchanger Jing blast pipes with it is described The air inlet of round shape bed body is connected, air outlet Jing bed bodies discharge pipe and the cyclone separator air inlet phase of the round shape bed body Even, the ash bucket bottom Jing circulation air exhausters of the cyclone separator are connected with the round shape bed body, the cyclone separator air-out The separated device wind pipe of mouth is connected with the air inlet of the fan with low voltage, air outlet and the exhaust duct phase of the fan with low voltage Even.

Preferably, the round shape bed body air inlet is provided with frustum wind scooper.

Preferably, the frustum wind scooper is arranged with round shape bed body concentric.

Preferably, the round shape bed body includes cylindric inlet air plenum, inverted cone mesa-shaped boiling-house, cylindric boiling-house rounding Frustum expansion chamber, cylindric expansion chamber and frustum go out air compartment；The heat exchanger Jing blast pipes and the cylindric air intake Room is connected；The charging aperture is arranged on cylindric boiling-house；The discharging opening is arranged on the bottom of the rounding frustum boiling-house； The Turbogrid plates are arranged between cylindric boiling-house and inverted cone mesa-shaped boiling-house.

Preferably, the Turbogrid plates are R-joining pinprick formula structure, and its eyelet footpath is ∮ 4mm.

Compared with prior art, the beneficial effects of the utility model are：

1. the circular fluid-bed dryer of this utility model design is circle, and greatly, material holds quantity to bed body effective area Many, big with hot blast contact surface in bed body, the air quantity at each position is homogeneous, uniform drying, overcomes the dead of former fluid-bed dryer The drawbacks of fugitive constituent is difficult to up to standard after the CPE dry materials of angular position；

2. in the cylindric air intake room in this utility model exsiccator bottom, center arranges reverse taper, causes hot blast tangentially to follow Ring, is threaded into bed body, and hot blast utilization rate is high, and each position hot blast is uniform, and boiling effect is good, and without any dead angle position, screen is not Ramming material, energy consumption are substantially reduced；

3. bed body is divided into cylindric inlet air plenum, inverted cone mesa-shaped boiling-house, cylindric boiling-house, rounding by this utility model Frustum expansion chamber, cylindric expansion chamber and frustum go out air compartment, and the structure design is circled round in causing material boiling process space Greatly, remove moisture effect good, particularly during the later stage of drying, beneficial to the moisture evaporation inside CPE materials；

4. Turbogrid plates of the present utility model are R-joining pinprick formula structure, and the small circular plate punching press after eyelet punching press is in thin retainer Disk, CPE hold and dry run in, material will not fall into a bottom inlet air plenum, increase into hot blast area and effect, dry run In, material will not block screen eye all the time, overcome the cumbersome process of cleaning screen, improve utilization rate of equipment and installations；

5. this utility model sets up air exhauster at cyclone separator bottom, and the CPE materials for being separated and recovered enter exsiccator, follow Ring continues drying, designs low blast Wind Volume centrifugation machine windward, does not run material in boiling process, exhaust passage end set rustless steel without Dust arrester, runs out of pollution surrounding enviroment without powder, dry products yield almost 100%.

Description of the drawings

Fig. 1 is this utility model structural representation；

Fig. 2 is cylindric inlet air plenum air intake schematic diagram of the present utility model；

Fig. 3 is this utility model and traditional ebullated bed performance indications comparison diagram.

In figure：1. heat exchanger；2. round shape bed body；3. cyclone separator；4. fan with low voltage；5. exhaust duct；6. charging aperture；7. Discharging opening；8. Turbogrid plates；9. bed body discharge pipe；10. air exhauster is circulated；11. separator wind pipes；12. blast pipes；13. cones Platform wind scooper；14. cylindric inlet air plenums；15. inverted cone mesa-shaped boiling-houses；16. cylindric boiling-houses；17. inverted cone mesa-shapeds expand Big room；18. cylindric expansion chambers；19. frustums go out air compartment.

Specific embodiment

Below in conjunction with the accompanying drawings this utility model is further illustrated：

A kind of circular fluid-bed dryer, including heat exchanger 1, overlook rounded round shape bed body 2, cyclone separator 3, low Pressure fan 4, exhaust duct 5, the round shape bed body 2 are provided with charging aperture 6, discharging opening 7 and Turbogrid plates 8,1 Jing air intakes of the heat exchanger Pipe 12 is connected with the air inlet of the round shape bed body 2, air outlet Jing bed bodies discharge pipe 9 and the whirlwind of the round shape bed body 2 3 air inlet of separator is connected, and the ash bucket bottom Jing circulation air exhausters 10 of the cyclone separator 3 are connected with the round shape bed body 2, The separated device wind pipe of 3 air outlet of the cyclone separator 11 is connected with the air inlet of the fan with low voltage 4, the low-pressure air The air outlet of machine 4 is connected with exhaust duct 5.

Preferably, 2 air inlet of round shape bed body is provided with frustum wind scooper 13.

Preferably, the frustum wind scooper 13 is arranged with 2 concentric of round shape bed body.

Preferably, the round shape bed body 2 includes cylindric inlet air plenum 14, inverted cone mesa-shaped boiling-house 15, cylindric boiling Room 16, inverted cone mesa-shaped expansion chamber 17, cylindric expansion chamber 18 and frustum go out air compartment 19；1 Jing blast pipes of the heat exchanger 12 are connected with the cylindric inlet air plenum 14；The charging aperture 6 is arranged on cylindric boiling-house 16；The discharging opening 7 is arranged In the bottom of the inverted cone mesa-shaped boiling-house 15；The Turbogrid plates 8 are arranged on cylindric boiling-house 16 and are boiled with inverted cone mesa-shaped Rise between room 15.

Preferably, the Turbogrid plates 8 are R-joining pinprick formula structure, and its eyelet footpath is ∮ 4mm.

In the presence of fan with low voltage 4,1 air intake of heat exchanger be hot blast by cold air heating, hot blast Jing blast pipes 12 enter Cylindric inlet air plenum 14,14 bottom centre position of cylindric inlet air plenum of round shape bed body 2 arrange frustum wind scooper 13, cause hot blast Tangentially circulate (as shown in Figure of description 2), spiral sequentially enters inverted cone mesa-shaped boiling-house 15, cylindric boiling-house 16, falls Circular cone shape expansion chamber 17, cylindric expansion chamber 18 and frustum go out air compartment 19, and boiling convolution space is very big.Material Jing feeds Mouth 6 is laid on Turbogrid plates 8, and under hot blast screw action, material seethes with excitement on Turbogrid plates 8, and dried material is in gravity Be deposited under effect in inverted cone mesa-shaped boiling-house 15, most after Jing discharging openings 7 release material.Certainly, in boiling process, have thin Powder can be entered in bed body discharge pipe 9 and cyclone separator 3 in company with hot blast.This utility model design circular fluid-bed dryer be Circle, bed body effective area are big, and material holds that quantity is more, and big with hot blast contact surface in bed body, the air quantity at each position is homogeneous, does It is dry uniform, the drawbacks of after overcoming the dead angle position CPE dry materials of former fluid-bed dryer, fugitive constituent is difficult to up to standard；Exsiccator In the cylindric air intake room in bottom, center arranges reverse taper, causes hot blast tangentially to circulate, is threaded into bed body, hot blast utilization rate Height, each position hot blast are uniform, and boiling effect is good, and without any dead angle position, screen not ramming material, energy consumption are substantially reduced；By bed body point For cylindric inlet air plenum, inverted cone mesa-shaped boiling-house, cylindric boiling-house, rounding frustum expansion chamber, cylindric expansion chamber and Frustum goes out air compartment, and the structure design is circled round in causing material boiling process, and space is big, and removing moisture effect is good, particularly drying In late stage, beneficial to the moisture evaporation inside CPE materials；Turbogrid plates of the present utility model be R-joining pinprick formula structure, eyelet Small circular plate punching press after punching press be in thin care feed tray, CPE hold and dry run in, material will not fall into a bottom inlet air plenum, increase Enter hot blast area and effect, in dry run, material will not block screen eye all the time, overcome the loaded down with trivial details work of cleaning screen Sequence, improves utilization rate of equipment and installations；This utility model sets up air exhauster at cyclone separator bottom, and the CPE materials for being separated and recovered enter Enter exsiccator, circulation continues drying, design low blast Wind Volume centrifugation machine windward, in boiling process, do not run material, exhaust passage end If rustless steel is without dust arrester, pollution surrounding enviroment are run out of without powder, dry products yield almost 100%.This utility model Shown in design parameter index as Figure of description 3.

In sum, preferred embodiment only of the present utility model, not for limit this utility model enforcement Scope, the impartial change carried out by all shapes according to described in this utility model right, construction, feature and spirit with repair Decorations, all should be included in right of the present utility model.

Claims (5)

1. a kind of circular fluid-bed dryer, it is characterised in that：Including heat exchanger (1), overlook rounded round shape bed body (2), Cyclone separator (3), fan with low voltage (4), exhaust duct (5), the round shape bed body (2) be provided with charging aperture (6), discharging opening (7) with And Turbogrid plates (8), the heat exchanger (1) Jing blast pipes (12) is connected with the air inlet of the round shape bed body (2), the round shape bed Air outlet Jing bed body discharge pipes (9) of body (2) is connected with the cyclone separator (3) air inlet, the cyclone separator (3) Ash bucket bottom Jing circulations air exhauster (10) is connected with the round shape bed body (2), the separated device of cyclone separator (3) air outlet Wind pipe (11) is connected with the air inlet of the fan with low voltage (4), air outlet and the exhaust duct (5) of the fan with low voltage (4) It is connected.

2. circular fluid-bed dryer according to claim 1, it is characterised in that：Round shape bed body (2) air inlet It is provided with frustum wind scooper (13).

3. circular fluid-bed dryer according to claim 2, it is characterised in that：The frustum wind scooper (13) and round shape Bed body (2) concentric is arranged.

4. circular fluid-bed dryer according to claim 1 and 2, it is characterised in that：The round shape bed body (2) is including circle Column inlet air plenum (14), inverted cone mesa-shaped boiling-house (15), cylindric boiling-house (16), inverted cone mesa-shaped expansion chamber (17), circle Column expansion chamber (18) and frustum go out air compartment (19)；The heat exchanger (1) Jing blast pipes (12) and the cylindric air intake Room (14) is connected；The charging aperture (6) is arranged on cylindric boiling-house (16)；The discharging opening (7) is arranged on the rounding The bottom of frustum boiling-house (15)；The Turbogrid plates (8) are arranged on cylindric boiling-house (16) and inverted cone mesa-shaped boiling-house (15) between.

5. circular fluid-bed dryer according to claim 4, it is characterised in that：The Turbogrid plates (8) are R-joining pinprick Formula structure, its eyelet footpath are ∮ 4mm.