CN2508850Y - Continuous anti-corrosion microwave drying & calcining equipment - Google Patents

Abstract

The utility model discloses a microwave drying, calcinating device which is continuously fed with material and anti-corrosion. The device consists of a microwave source 1, a Bird 2, a ring-shaped component 3, a water load 4, a pin tuner 5, a hopper 6, an anti-converter 7, a humid exhausting opening 8, a material container 9, a furnace door 10, an insulating layer 11, a microwave oven cavity 12 and a material entrance 13; the material container 9 is made from microwave going through quartz glass or ceramic material and is both a material container and a material conveying pipe and also has anti-corrosion function; the drying (calcinating) oven is an erect type and can automatically convey by self gravity; the device disclosed by the utility model has anti-corrosion, high temperature-resistance and continuous-working performance, and can greatly improve productivity; the utility model has the advantages of low energy consumption, light pollution, great economic and social benefits.

Description

The anticorrosion microwave drying of a kind of continous way, calciner

The utility model belongs to chemical industry, metallurgical dry (calcining) device, the particularly chemical products of band corrosion property and the rapid draing (calcining) of mineral.

As everyone knows, in the production process of chemical products and mineral, all relate to the drying (calcining) of Korrosionsmedium material, drying effect is demanding even also relate to removing of the crystallization water, traditional heating drying (calcining) (coal,, oil, gas directly heats, steam, infrared indirect etc.) all be based on conduction, convection current, three kinds of heat transfer type dryings of radiation (calcining) material, it needs heat to pass through material from outward appearance to inner essence to internal communication, and material often thermal conductivity factor is lower, heat conduction time is very long, so heating slowly, external temperature and internal temperature are in the suitable time, promptly set up before the thermal balance, must be uneven (usually be that the appearance material is dry or calcined, and materials inside does not parch or do not calcine.Promptly occur so-called " cold " center "), heating slowly means that the quantity that heat scatters and disappears to the external world increases, just the thermal efficiency is low; The thermal source of traditional heating itself has certain temperature could be to extraneous radiation, conduction heat, because heat and thermal inertia often are difficult to accomplish to disconnect immediately thermal source when people end to heat, at this moment energy is not only wasted in the dissipation of waste heat, and make technology controlling and process become heavy in hand, thereby the traditional heating time is long, and energy consumption is big; And the occasion of traditional heating work under bad environment usually, seriously polluted; Simultaneously, when relating to the dry or calcining of Korrosionsmedium material, the corrosion-resistant problem of traditional heating equipment also is difficult to resolve determines.

The utility model provides a kind of equipment that can implement continuous microwave drying, calcining Korrosionsmedium material.

The utility model is by microwave source 1, waveguide 2, and circulator 3, water load 4, pin tuner 5, hopper 6, anti-current device 7, moisture exhausting port 8, material container 9, fire door 10, thermal insulation layer 11, microwave cavity 12, feed opening 13 is formed, as shown in Figure 1.

The course of work of the present utility model is: the microwave that microwave source 1 produces is by waveguide 2, circulator 3, pin tuner 5 feed-in microwave oven cavities 12, and material descends from gravity from hopper 6, enter material container 9 in the microwave oven cavity 12 by anti-current device 7, make material heat drying or calcining in microwave oven cavity 12; The corrosivity steam that produces is taken away by blower fan by moisture exhausting port 8, and material dry or that calcining is good is discharged by feed opening 13.

The utility model can one works independently according to production scale, also can many be used in combination.

Microwave source 1 in the utility model adopts advanced 20kW/915MHz HIGH-POWERED MICROWAVES magnetron rate of doing work source, power output is 5～20kW, (its bias magnetic field is guided to high-power water load 4 with reflection power by high-power circulator 3, the protection magnetron), high-power water load 4 (being used for absorbing reflection power), pin tuner 5 (its standing-wave ratio is: 1.1～3.0, guarantee optimum Match) and waveguide 2 composition microwave transmission systems; Microwave drying (calcining) body of heater is made up of furnace chamber 12 (furnace wall interlayer liner heat-barrier material), anti-current device 7 (it is up to state standards in the scope charging, discharging opening microwave leakage), fire door 10 etc.; Material container 9 is made by the microwave penetrating material, as making by quartz glass or ceramic material, it be material container be again material conveying pipe, and have corrosion proof function.Thereby this equipment is corrosion-resistant, and is high temperature resistant, no dust, smog, and microwave leakage meets national standard.

It is different with traditional heating mode that microwave energy is applied to dry materials (calcining), the heating using microwave inside that to be electromagnetic energy be penetrated into medium with the form of ripple generates heat because of dielectric loss, must be through overheated conduction, thereby has an instantaneity, it means quick heating, and is inside and outside heating simultaneously, has the characteristics of even heating for uniform dielectric, thereby reduced the heat conducting time significantly, can avoid " the cold " center " phenomenon in the traditional heating mode.The heating of the instantaneity of microwave means simultaneously that also thermal source can guide to high-power water load 4, the protection magnetron), high-power water load 4 (being used for absorbing reflection power), pin tuner 5 (its standing-wave ratio is: 1.1～3.0, guarantee optimum Match) and waveguide 2 composition microwave transmission systems; Microwave drying (calcining) body of heater is made up of furnace chamber 12 (furnace wall interlayer liner heat-barrier material), anti-current device 7 (it is up to state standards in the scope charging, discharging opening microwave leakage) etc.; Material container 9 is made by the microwave penetrating material, as making by quartz glass or ceramic material, it be material container be again material conveying pipe, and have corrosion proof function.Thereby this equipment is corrosion-resistant, and is high temperature resistant, no dust, smog, and microwave leakage meets national standard.

It is different with traditional heating mode that microwave energy is applied to dry materials (calcining), the heating using microwave inside that to be electromagnetic energy be penetrated into medium with the form of ripple generates heat because of dielectric loss, must be through overheated conduction, thereby has an instantaneity, it means quick heating, and is inside and outside heating simultaneously, has the characteristics of even heating for uniform dielectric, thereby reduced the heat conducting time significantly, can avoid " the cold " center " phenomenon in the traditional heating mode.The heating of the instantaneity of microwave means simultaneously that also thermal source can instantaneously be cut off, so the instantaneity heating has embodied energy-conservation and advantage that be easy to control with stopping to heat.Under the microwave energy effect, material molecule generation Action of Superhigh Frequency Vibration, rotation, friction and collision, per second vibration 4.9 * 10 under the 2450MHz frequency ⁹Inferior, per second vibration 8.3 * 10 under the 915MHz frequency ⁸Inferior, impel temperature to raise rapidly; Simultaneously because heating using microwave has selectivity, most of metal sulfides and some metal oxides can absorb microwave in a large number, temperature of charge can rise to several Baidu even thousands of degree (relevant with inventory with power) after a few minutes, and galena, pyrite, magnetic iron ore, magnetic iron ore have the high rate of heat addition; Bloodstone, ilmenite, tin ore have the medium rate of heat addition; Mica, zincblende, quartz have the very poor rate of heat addition.Microwave can heat some material, and gangue mineral does not absorb or seldom absorb microwave, the characteristic of this selectivity heating and Fast Heating, can make the interface of thing phase that enough big thermal stress takes place, different stress and strains causes producing between metal particle and the gangue or breeding crackle, or the expansion of intergranular seam is broadened, thereby help the refinement of material and removing of the crystallization water.

In sum, the advantage or the good effect of this device are: 1. this device is applied to dry materials or calcining, because its firing rate is exceedingly fast, so can be big

Amplitude is boosted productivity.The firing rate that is exceedingly fast and extremely short heat time heating time, help material

Removing of the refinement and the crystallization water.Thereby this device has in the preparation technology of nano-powder obviously

Superiority.2. heating using microwave is based on the dielectric loss heating of material itself, in whole device, has only thing

Material is in the high temperature, and remainder still is in the normal temperature cold conditions, so the compact conformation of whole device,

Floor space is little.The furnace outer wall temperature is low, adds no dust, noise and smog, can improve greatly

Workman's working condition reduces labour intensity, and great social benefit is arranged.3. this equipment is corrosion-resistant, and is high temperature resistant, no dust, smog, and microwave leakage meets national standard.4. inside and outside consistent the heating, thereby reduced the heat conducting time significantly, can avoid tradition to add

" cold " center " phenomenon in the hot mode.5. but this device uses according to the production scale separate unit, also can many be used in combination, and can realizes meter

The control of calculation machine realizes automated production.The generation of microwave energy and close almost noninertia is easy to control

System, safe and reliable.6. energy-efficient: microwave energy converts the efficient of heat energy to, is generally 80%～90%, adds

Microwave drying (calcining) time compole short, and the closure of microwave power is to oozing of material

Saturating property and the instantaneity that is converted into heat have constituted the energy-conservation basic characteristics of heating using microwave, and microwave adds

Heat has reduced the time of conventional method heat transfer process, i.e. equally distributed time of temperature, thereby

Significantly reduced heat loss, thereby cut down the consumption of energy, compared with traditional electric furnace to environment, energy-conservation

Can reach about 50%, thereby have considerable economic.

Description of drawings:

Fig. 1 is an organigram of the present utility model,

Wherein: microwave source 1, waveguide 2, circulator 3, water load 4, pin tuner 5, hopper 6, anti-current device 7, moisture exhausting port 8, material container 9, fire door 10, thermal insulation layer 11, microwave cavity 12, feed opening 13.

The specific embodiment

AlCl ₃6H ₂The O pyrolysis becomes Al ₂O ₃Production process in owing to will produce the extremely strong HCl of corrosivity, the anticorrosion problem of equipment is the difficult point in the production process always.Utilize device disclosed in the utility model, not only can successfully solve the anticorrosion problem, and the Al that utilizes the utility model device to produce ₂O ₃, performance indications such as its color and granularity all have clear improvement.

With this device of 5 20kW/915MHz (as 1.5～2.5m ³The material container of the built-in diameter of phi 30～40cm of furnace chamber) every day can dry water content 40%～50% AlCl ₃6H ₂2～2.5 tons of O filter cakes can become 2 tons of ultra-fine Al with dried aluminium chloride pyrolysis with this device of 5 20kW/915MHz every day ₂O ₃

Equally, but 0.5 ton of metatitanic acid of this device of every 20kW/915MHz drying and calcining every day prepares rutile-type superfine Ti O ₂But 0.5 ton of basic zinc carbonate of this device of every 20kW/915MHz drying and calcining every day prepares ultra-fine ZnO etc.

Claims (4)

1. continous way anticorrosion microwave drying, calciner, comprise: microwave source (1), waveguide (2), circulator (3), water load (4), pin tuner (5), it is characterized in that it also comprises microwave drying, the calcining body of heater, this body of heater is by hopper (6), anti-current device (7), moisture exhausting port (8), material container (9), furnace chamber (12), furnace wall interlayer liner thermal insulation layer (11), fire door (10), feed opening (13) is formed, hopper (6) is positioned at the top of body of heater, feed opening (13) is positioned at the body of heater bottom, moisture exhausting port is positioned at the lower side of hopper (6), (7) one of anti-current devices are positioned at the body of heater center of top and are connected for one and with hopper (6) with the body of heater weldering, another is positioned at, and bottom of furnace body is central to be connected for one and with feed opening (13) with the body of heater weldering, and material container (9) is positioned at furnace chamber (12) central interior and runs through whole body of heater up and down.

2. a kind of continuous-type microwave drying according to claim 1, calciner is characterized in that: described high-power microwave source (1) frequency is 915MHz, also can be 2450MHz.

3. a kind of continous way anticorrosion microwave drying according to claim 1, calciner is characterized in that: described material container (9) is to be made by microwave penetrating material quartz glass, ceramic material, it be material container be again material conveying pipe.

4. a kind of continuous charging anticorrosion microwave drying according to claim 1, calciner is characterized in that: described furnace chamber (12) is for vertical.