JP2018065134A - Vibration fluid bed type separator of pulverulent body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration fluid bed type separator utilizing howl vibration which can introduce pulverulent bodies with different density differences into a separation vessel and realize separation dispersion effects even at an introduction stage.SOLUTION: A vibration fluid bed type separator comprises: a cylindrical separation vessel 1 into which pulverulent bodies with different density differences are introduced; first vibration generators 2c, 2h that make howl vibration act on the pulverulent bodies in the separation vessel 1 from outside of the vessel; second vibration generators 4a, 4b that make howl vibration act on the pulverulent bodies in the separation vessel 1 from inside of the vessel via a cylindrical inner vibrator 3; and fluidized gas supply means that supplies from the bottom part of the separation vessel 1 into the separation vessel 1. The vibration fluid bed type separator introduces pulverulent bodies with different density differences into the separation vessel via the cylindrical inner vibrator 3 and employs a dispersive fluidization structure which disperses and fluidizes the pulverulent bodies introduced into the introduction port part.SELECTED DRAWING: Figure 18

Description

  The invention of this application is based on vibration and flow of powders that can be separated efficiently by using vibration, impact action, fluidization by fine bubbles, and dispersion action of powders having different density differences (specific gravity differences). The present invention relates to a layer type separation apparatus.

  Conventionally, coal-fired boiler facilities are often used in boiler facilities such as thermal power plants. The exhaust gas emitted from this coal-fired boiler facility contains a large amount of coal ash (dust), and if it is discharged as it is, the surrounding environment will be adversely affected. For this reason, such coal ash is collected using a predetermined dust collector (for example, a dry dust collector, a dry electric dust collector, etc.), and most of the coal ash is treated as waste (landfill or the like). Some are called fly ash and are used as a raw material for fly ash cement or as an admixture for cement.

  However, the recovered coal ash contains a considerable amount of unburned coal that can be reused, and it is wasted energy resources to discard this as it is together with the calcined portion. Further, when coal ash is used as a raw material for fly ash cement or the like, if the amount of unburnt coal is large, the surface of the concrete becomes black and admixture adsorbs.

  However, in recent coal-fired thermal power plants, the combustion temperature of the boiler part is kept low considering the influence of nitrogen oxides on the surrounding environment, which causes extra unburned coal in the coal ash. There is a tendency for the content of to increase.

  Based on such circumstances, for example, an electrostatic separation device using an electrostatic separation method or a centrifugal separation method has been adopted as a separation device for separating and recovering unburned coal in the recovered coal ash. Centrifugal separators, vibratory separation actions and fluidization by airflow, vibratory fluidized bed separators utilizing dispersion action, and the like have been proposed.

  However, there is still room for improvement in terms of separation performance and separation efficiency in the case of an electrostatic separation device employing an electrostatic separation method and a centrifugal separation device employing a centrifugal separation method.

  On the other hand, a vibration fluidized bed type separation device using separation action by vibration, fluidization by air flow, and dispersion action includes a separation container for storing used coal ash including unburned coal, for example. A fluidized air supply space is provided at the bottom of the container, and a coal ash storage space is provided at the top. The space is partitioned by a diffuser plate having at least a hole diameter smaller than the diameter of the coal ash particles, and vibrates with respect to the separation container. Attach a rotary excitation source such as a motor to vibrate, while supplying fluidizing gas from a fluidizing gas generation source such as a compressor to the fluidizing gas supply space, and flow into the separation container via a diffuser plate It is comprised so that chemical gas may flow (refer the structure of patent document 1).

  According to such a configuration, the drive of the excitation source causes the separation container containing unseparated coal ash to vibrate at a predetermined frequency in the vertical direction, and the stored coal ash and unburnt coal move up and down due to the specific gravity difference. On the other hand, when the fluidized gas generation source is driven, the fluidized gas from the fluidized gas generation source is introduced into the fluidized gas supply space and is lowered into the coal ash through the diffuser holes of the diffuser plate. A certain amount of bubbles are generated in the coal ash, fluidizing the entire coal ash to form a fluidized bed, and having high adhesion to the burned coal ash Fuel coal is dispersed among each other.

  As a result, unburned coal having a small specific gravity floats to the upper layer, and coal ash having a large specific gravity sinks to the lower layer side, so that both can be separated relatively easily.

Japanese Patent No. 3362605

  However, in the case of the configuration of the above conventional vibrating fluidized bed type separation apparatus, as apparent from the claims and the description of the specification, the superficial velocity of the low flow rate of 0.5 to 4.0 cm / sec. In order to fluidize and disperse the powder, the frequency of the excitation source must be 10 Hz or more, and the amplitude should be 0.1 to 2.0 mm. Is a simple vibration with a constant amplitude in the vertical direction.

  According to the present applicant's confirmation by experiment, at such a superficial velocity of a low flow rate of 0.5 to 4.0 cm / sec, there are many fine particles having a high adhesion, for example, a particle size of 5 to 10 μm or less. In the case of coal ash, the coal ash cannot be fluidized and dispersed in a stable state, and the unburned coal cannot be separated accurately. On the other hand, if the inflow rate of the gas supplied to solve this problem is increased, large bubbles are generated in the coal ash, and conversely, the coal ash is mixed and separation is not possible. It becomes possible.

  In addition, when the applied vibration is a simple vibration with a constant amplitude in the vertical direction, for example, the adhesion state of fine particles having a large particle size of 5 to 10 μm or less can be effectively cut off and freely dispersed and fluidized. Therefore, effective density difference separation cannot always be realized.

  In order to solve such problems, the fine particles having a particle diameter of 5 to 10 μm or less, which has become a bottleneck, are removed in advance, or the characteristics of various coal ash are individually analyzed, and tests according to the characteristics are performed. Therefore, it is necessary to obtain the optimum gas supply speed and vibration conditions that can be appropriately dispersed and separated by the combination of fine bubbles and vibration, which is extremely troublesome.

Therefore, in order to solve the problems of such a conventional powder vibration fluidized bed separation device, the inventors of the present application should employ a plurality of vibration motors each having a different frequency to separate them in a separation container. In powders having different density differences, in addition to the torsional vibrations from a plurality of vibration motors on the outer peripheral side of the separation container on the radially outer side, the torsional vibrations from the plurality of vibration generators on the inner vibrating body side on the radially inner side, Separation of multiple vibrations of the torsional vibration generated between multiple sets of vibration motors on the outer circumference of the separation container facing each other via powder, causing mechanical impact force by interfering with each other In the separation container, fine fluidized bubbles are generated in the powder in the separation container by the fluidizing gas from the fluidizing gas supply device supplied from the lower side of the separation container through the diffuser hole at the bottom of the container. Separating powder Reduces the adhesion force between powders with different density differences to be separated by vibrations caused by torsional vibrations acting from the inside and outside directions, impact force due to their interference, and promotion of fluidization caused by the rise of fine fluidized bubbles. Thus, there has been proposed a powder fluidized bed separation device that enhances the dispersion effect and effectively improves the density difference separation effect by vibration (see Japanese Patent Application No. 2014-79309, which is the original application).

According to such an oscillating fluidized bed type separation device, in addition to the vibrations caused by the multiple torsional vibrations and the mechanical impact force due to their mutual interference, fine fluidized bubbles can be used to separate powders having different density differences to be separated. It can be fluidized and dispersed more effectively without causing mutual mixing.

Therefore, due to the synergistic effect of these actions, the adhesion force between fine powders with different density differences to be separated is further effectively reduced, and the fluidization and dispersion effects are improved, so that powders with different density differences can be improved. Effective density difference separation by vibration becomes possible.

However, in order to efficiently realize such a separation operation in the separation container, it is possible to introduce fine powders having different density differences to be separated into the separation container smoothly without clogging. In the stage, it is necessary to be able to introduce the powder while being fluidized and dispersed without causing mixing of powders having different density differences.

The invention of this application was made in order to solve such issues, the vibrating fluidized bed type separation apparatus as described above, further smoothly without clogging the introduction of the powder into the separation vessel In addition, it is possible to provide an oscillating fluidized bed separation device for powder that can be introduced while being fluidized and dispersed without causing mixing of powders having different density differences even in the introduced state. It is the purpose.

In order to solve the above-mentioned problems, the invention of this application comprises the following effective problem-solving means. (1) Problem-solving means according to the invention of claim 1 This invention should be separated A cylindrical separation container, which is an external vibrator that accommodates powders having different density differences, an air diffuser provided in the entire bottom surface of the separation container, and a central axis portion in the separation container A cylindrical internal vibrating body suspended downward from the outside, a plurality of vibration motors provided on the outer peripheral side of the separation container, each of which has a different frequency for vibrating the separation container, and the internal vibration body side A plurality of vibration motors each having a different frequency, each of which vibrates the internal vibrator, and fluidized gas is supplied from the lower side of the separation container through the air diffuser at the bottom of the separation container Fine fluidized bubbles in the powder in the separation container And a fluidizing gas supply device for generating a vibration, and a plurality of vibration motors on the outer peripheral side of the separation container act on the powder in the separation container from the outside in the radial direction, The vibration motor causes the vibration in the radial direction to act on the powder in the separation container from the inner side in the radial direction, thereby causing interference between the mutual vibrations, and through the air diffuser provided in the bottom of the separation container. This is a vibrating fluidized bed type separation device that enables density difference separation by promoting fluidization of powders having different density differences in the separation container by supplying fluidized gas from a fluidized gas supply device. The cylindrical internal vibrating body is formed at the upper end side of the powder supply port having different density differences to be separated, and the lower end side of separating powder having different density differences to be separated. The introduction port into the separation vessel forms the bottom of the cylindrical internal vibrator, and from the fluidizing gas supply device in the circumferential direction of the conical surface. An upward convex conical cover provided with a blowout port for the fluidized gas to be supplied, and a powder outlet hole formed in the circumferential direction of the internal vibrating body peripheral wall portion outside the conical surface of the conical cover The powders having different density differences to be separated are introduced into the separation container in a dispersed and fluidized state through the cylindrical internal vibrator.

In this way, a cylindrical separation container that is an external vibrating body in which powders having different density differences to be separated are accommodated, an air diffuser provided on the entire bottom surface of the separation container, and a center in the separation container A cylindrical internal vibrator which is located on the shaft portion and is suspended from above, and a plurality of vibration modes which are provided on the outer peripheral side of the separation container and which vibrate the separation container, each having a different frequency. A plurality of vibration motors that are provided on the internal vibration body side and that vibrate the internal vibration body, each having a different frequency, and a diffuser hole at the bottom of the separation container from the lower side of the separation container. A fluidized gas supply device for supplying a fluidized gas through a fluidized gas supply device for generating fine fluidized bubbles in the powder in the separation container. The density difference separation action like

That is, when the cylindrical separation container is vibrated using a plurality of vibration motors having different frequencies on the outer peripheral side of the separation container, the amplitude of the powder in the separation container is increased from the outside in the radial direction. Periodic vibrations that change periodically can be applied. Further, when the internal vibration body is vibrated by a plurality of vibration motors on the internal vibration body side, each of which has a different frequency, the torsional vibration whose amplitude periodically changes from the radially inner side with respect to the powder in the separation container. Can act.

As a result, in the powder part in the separation container, the torsional vibration from the plurality of vibration motors on the outer periphery side of the radially outer side and the torsional vibration from the plurality of vibration motors on the inner vibration body side in the radial direction are mutually As a result of the interference, an impact force is generated along with the vibration, and the adhesion force between the powders having different density differences to be separated by the impact force is effectively reduced.

In addition, in the same state, the fluidized gas is supplied from the fluidized gas supply device to the powders having different density differences through the air diffusion holes provided at the bottom of the separation container. The fluidization gas promotes fluidization of powders having different density differences in the separation container in which the mutual adhesion force is reduced.

As a result, it is possible to enhance the dispersion effect of powders having different density differences, and to greatly improve the density difference separation effect due to vibration.

Further, in the case of the configuration of the present invention, in such a case, the cylindrical internal vibrator is formed at the upper end side of the powder supply port with different density difference to be separated, and on the other hand, The lower end side is formed at the introduction port of the powder having a different density difference to be separated into the separation container, and the introduction port into the separation container forms the bottom of the cylindrical internal vibrator. And an upward convex conical cover provided with an outlet for fluidizing gas supplied from the fluidizing gas supply device in the circumferential direction of the conical surface, and the inner vibrating body peripheral wall portion outside the conical surface of the conical cover The powder with different density differences to be separated is dispersed and fluidized in the separation container via the cylindrical internal vibrator. It has been introduced.

That is, in this configuration, the powder introduction ducts having different density differences are formed by the cylindrical internal vibrating body, which itself vibrates effectively and becomes a shearing vibration source. Dispersion and fluidity of the body are increased and clogging is less likely to occur.

In addition, the lower end side of the inlet portion forms the bottom of a cylindrical internal vibrating body that is a powder introduction duct having different density differences, and is supplied from the fluidized gas supply device in the circumferential direction of the conical surface. An upwardly projecting conical cover having a fluidized gas outlet, and a powder outlet hole formed in the circumferential direction of the peripheral wall of the internal vibrating body outside the conical surface of the conical cover. It is configured.

Accordingly, the powders having different density differences to be separated supplied to the separation container are blown out of the fluidized gas on the conical surface of the conical cover even when they are introduced into the separation container through the cylindrical internal vibrator. Dispersion and fluidization are promoted by the fluidized gas blown obliquely upward from the mouth, and are introduced in an effective dispersion and fluidized state.
Therefore, the separation effect of powders having different density differences to be separated introduced into the separation container is further improved.

As a result of the above, according to the invention of this application , even in the case of coal ash and the like containing a large amount of fine particles having a high particle size of 10 μm or less, the adhesive force is more effectively reduced and a stable state is achieved. Thus, coal ash can be fluidized and dispersed, and unburned coal can be separated and recovered with high accuracy.

As a result, the recovery efficiency of unburned coal is improved, and energy resources can be used as effectively as possible. Further, when the burned coal ash obtained by separating and recovering unburned coal is used as a raw material for fly ash cement, problems such as blackening of the concrete surface and adsorption of the admixture do not occur.

It is sectional drawing which shows the fundamental structure of the apparatus main body part of the vibration fluidized bed type | mold separation apparatus of the powder which concerns on the 1st form for implementing invention of this application. It is a top view which shows the basic composition of the apparatus main body part. A first example of a combined waveform of the torsional vibration generated in the coal ash part when the plurality of vibration generators in the apparatus main body part are operated under the first operating number and the first operating condition ((a) is the amplitude, ( b) is a diagram showing an acceleration ratio). A second composite waveform example of the torsional vibration generated in the coal ash part when the plurality of vibration generators of the apparatus main body part is operated under the second operating number and the second operating condition ((a) is the amplitude, ( b) is a diagram showing an acceleration ratio). A third example of a combined vibration of the vibration generated in the coal ash portion when the plurality of vibration generators in the apparatus main body is operated under the third operating number and the third operating condition ((a) is the amplitude, ( b) is a diagram showing an acceleration ratio). A fourth composite waveform example ((a) is the amplitude, (a) is the amplitude of the torsional vibration generated in the coal ash part when the plurality of vibration generators in the apparatus main body part are operated under the fourth operating number and the fourth operating condition.) b) is a diagram showing an acceleration ratio). A fifth composite waveform example (a is amplitude) of the torsional vibration generated in the coal ash portion when a plurality of vibration generators of the apparatus main body is operated under the fifth operating number and the fifth operating condition. b) is a diagram showing an acceleration ratio). A sixth composite waveform example (a is the amplitude, (a) is the vibration of the rolling vibration generated in the coal ash part when the plurality of vibration generators of the apparatus main body part is operated under the sixth operating condition and the sixth operating condition. b) is a diagram showing an acceleration ratio). 1 shows a configuration of a control system in which necessary devices, sensors, control devices, and the like are added to the device main body portion of the vibration fluidized bed separation device for powder according to the first embodiment for carrying out the invention of this application. FIG. On the premise of the configuration of the vibration fluidized bed type separation device for powder according to the first embodiment for carrying out the invention of this application, the invention of this application provided with a static elimination function for the fluidized air in the device It is a figure which shows the structure of the apparatus main body and control system part of the vibration fluidized bed type | mold separation apparatus of the powder which concerns on 2nd form for implementing this. On the premise of the configuration of the vibration fluidized bed separation device of the powder according to the first embodiment for carrying out the invention of this application, unburned coal separated on the upper side of the separation container in the device is discharged. A powder according to the third embodiment for carrying out the invention of this application, in which an unburnt coal discharge duct is provided and a scrubber for extruding unburnt coal that can be rotated is provided in the separation container to discharge unburnt coal. It is sectional drawing which shows the structure of the apparatus main body part of this vibration fluidized bed type | mold separation apparatus. It is a top view which shows the structure and effect | action of a scrubber in the apparatus main body of the same FIG. On the premise of the configuration of the vibration fluidized bed separation device of the powder according to the first embodiment for carrying out the invention of this application, unburned coal separated on the upper side of the separation container in the device is discharged. An apparatus main body part of the vibration fluidized bed separation apparatus for powder according to the fourth embodiment for carrying out the invention of this application, in which an unburned coal discharge duct is provided and an air pipe for discharging unburned coal is provided in the separation container It is sectional drawing which shows this structure. It is a top view which shows the structure and effect | action of an air pipe part in the apparatus main body of FIG. On the premise of the configuration of the oscillating fluidized bed type separation device for powder according to the first embodiment for carrying out the invention of this application, unburned coal separated from the upper side of the separation container in the device is discharged. A vibration fluidized bed type of powder according to the fifth embodiment for carrying out the invention of this application is provided with a charcoal discharge duct and a dredging member that scoops the unburned coal into the separation container and flows it to the discharge duct side. It is sectional drawing which shows the structure of the apparatus main body part of a separation apparatus. It is sectional drawing (AA sectional drawing of FIG. 15) of the principal part of the collar member of the same FIG. On the premise of the configuration of the vibration fluidized bed separation device for powder according to the first embodiment for carrying out the invention of this application, a duct for charging coal ash was provided on the side of the separation container in the device, It is sectional drawing which shows the structure of the apparatus main-body part of the vibration fluidized bed type | mold separation apparatus of the powder which concerns on the 6th form for implementing invention of this application. Based on the configuration of the vibration fluidized bed type separation apparatus for powder according to the first embodiment for carrying out the invention of this application, the internal vibration body provided in the central portion of the separation container in the apparatus is utilized. It is sectional drawing which shows the structure of the apparatus main body part of the vibration fluidized bed type | mold separation apparatus of the powder which concerns on the 7th form for implementing invention of this application which injected | thrown-in coal ash into the separation container. Assuming the configuration of the vibrating fluidized bed type separation apparatus for powder according to the first embodiment for carrying out the invention of this application, in this apparatus, coal ash after separation of unburnt coal is discharged to the outside by an air lift method. It is sectional drawing which shows the structure of the apparatus main body part of the oscillating fluidized bed type | mold separation apparatus of the powder which concerns on the 8th form for implementing invention of this application which was made. Based on the configuration of the vibrating fluidized bed type separation device for powder according to the first embodiment for carrying out the invention of this application, a plurality of vibrating fluidized bed type separation devices of the same configuration are combined in stages and separated. It is a general view which shows the structure of the apparatus main body part of the vibration fluidized bed type | mold separation apparatus of the powder which concerns on the 9th form for implementing invention of this application which improved the precision.

  Hereinafter, several embodiments for carrying out the invention of this application will be described in detail with reference to FIGS. In addition, each form demonstrated below uses the oscillating fluidized bed type | mold separation apparatus of the powder which concerns on invention of this application as an example, for example, used coal ash (henceforth, only coal from a boiler facility, such as a coal-fired power plant) It shows about the structure of the coal ash unburned component separator applied to the separation and collection of the unburned coal component (hereinafter simply referred to as unburned coal).

<First embodiment for carrying out the invention of this application>
First, FIG. 1 and FIG. 2 show the basic configuration of the apparatus main body portion of the oscillating fluidized bed type separation apparatus for powder according to the first embodiment for carrying out the invention of this application.

(Configuration of the device body)
That is, the main body of the vibrating fluidized bed separation apparatus is roughly divided and once burned in the boiler equipment, but is still covered with the used coal ash C containing a predetermined amount of the unburned coal component C2. A large-diameter cylindrical separation container 1 having a predetermined height, which is a vibrating body (external vibrating body), and anti-vibration members D, D,... Having predetermined spring constants that support the separation container 1 so as to vibrate. A plurality of (eight) first vibration generators 2a to 2h disposed on the outer periphery of the bottom side of the separation container 1, and inserted into the separation container 1 from the upper side to the lower side. A small-diameter cylindrical internal vibration body 3 having a predetermined length, which is a vibration body suspended from the central axis O portion of the container 1, and a plurality of internal vibration bodies 3 provided on the outer periphery on the upper end side. It comprises two (two) second vibration generators 4a and 4b.

  The inside of the separation container 1 is partitioned into two space portions, a large ash storage space 1A on the upper side and a fluidized air introduction space 1B on the bottom side through a diffuser plate 5 having a large number of diffuser holes. The used coal ash C including unburnt coal C2 is accommodated in the upper side coal ash accommodating space 1A up to the vicinity of the upper end side opening, while in the bottom side fluidized air introduction space 1B. The fluidized air is supplied from the fluidized air generator 14 described later via the fluidized air supply line 18. The fluidized air supplied into the fluidized air introduction space 1B is blown into the coal ash C through a large number of air holes of the diffuser plate 5, and is uniformly formed as fine bubbles in the coal ash C. Ascend, the entire coal ash C is fluidized appropriately, and a fluidized layer of coal ash C is formed. Reference numeral 1f is a fluidized air introduction port (a connection port of the fluidized air supply line 18) to the fluidized air introduction space 1B.

  The air diffuser plate 5 is constituted by a polymer plate having a predetermined thickness having a large number of air diffuser holes having a diameter smaller than 5 to 10 μm, for example, of the fine powder having the smallest particle diameter in the coal ash C. The fluidized air having a predetermined pressure fed from the fluidized air introduction space 1B side is uniformly blown into the coal ash accommodating space 1A as described above, and the entire coal ash C in the coal ash accommodating space 1A A large number of fine bubbles rising uniformly from below to above are generated uniformly, and a large number of fine rising spaces are formed in the coal ash C containing the unburned coal C2 by the large number of fine rising bubbles. By forming, for example, the particle diameter is as small as 10 μm or less, and if it is as it is, coal ash particles that easily adhere to each other are effectively dispersed and fluidized.

In the first vibration generators 2a to 2h, for example, two fan-shaped eccentric weights are provided at the tip of the rotor shaft of an inverter control type induction motor (three-phase or single-phase), and strong centrifugal vibration is generated during the eccentric rotation. It consists of a vibration motor to be generated. One of the two fan-shaped eccentric weights of the vibration motor has a fixed weight fixed to the rotor shaft, and the other has an adjustment weight capable of adjusting a relative mounting angle with respect to the fixed weight. By changing the relative angle, for example, the centrifugal force generated in the range of 0 to 100% can be adjusted. Centrifugal force vibration generated by the rotation (eccentric rotation) of the rotor shaft of the vibration motor as shown by the arrows in FIGS. 1 and 2 is basically sinusoidal vibration, and this sinusoidal centrifugal vibration (in FIG. 1). (See arrow) is transmitted to the separation container 1 which is a portion to be vibrated via predetermined vibration transmission members 7, 7... Described later, the centrifugal vibration of the sine wave transmitted through the separation container 1. In response to this, a sine wave is oscillated (oscillated) in the horizontal direction.

  That is, in the case of the configuration of the first embodiment, the first vibration generators 2a to 2h are attached to the bottom outer peripheral side attaching portions 1a to 1d of the separation container 1 via the predetermined vibration transmitting members 7, 7,. The sine wave centrifugal vibration of the first vibration generators 2a to 2h is transmitted to the bottom of the separation container 1 via the vibration transmitting member 7 and the attachment parts 1a to 1d, and the separation container 1 oscillates (oscillates) in the horizontal plane according to the centrifugal vibration of the sine wave.

  By the way, in the case of this embodiment, the eight first vibration generators 2a to 2h are each of 2 as shown in FIG. 2 (a plan view of the apparatus main body of FIG. 1 as viewed from above), for example. There are four sets in the circumferential direction in a form adjacent to each other as one set (one unit) of 2a and 2b, 2c and 2d, 2e and 2f, 2g and 2h. Are attached to the outer periphery of the bottom of the separation container 1 (the outer periphery of the fluidized air introduction space 1B) by using common attachment portions 1a, 1b, 1c, 1d, and 1e at intervals of 90 degrees in the circumferential direction. ing.

  For example, the inverter operating frequencies (frequency) of each of the first vibration generators 2a to 2h are, for example, the back side 2a = 83 Hz, 2b = 80 Hz, the right side 2c = 77 Hz, 2d = 74 Hz, and the front side 2e = 95Hz, 2f = 92Hz, left side 2g = 89Hz, 2h = 86Hz, etc., and the difference in inverter operating frequency (vibration) between the above directly adjacent 2a and 2b, 2c and 2d, 2e and 2f, 2g and 2h The difference in the number of inverters) is 3 Hz, and the inverter operating frequency difference (frequency frequency) between 2b and 2c, 2d and 2e, 2f and 2g, 2h and 2a adjacent to each other at intervals of 90 degrees in the circumferential direction. 3), 21 Hz, 3 Hz, 3 Hz, and vibration generators 2a and 2e, 2b and 2f, 2c and 2g, The inverter operating frequency difference (frequency difference) between d and 2h is set to 12 Hz, 12 Hz, 12 Hz, 12 Hz, and 12 Hz, respectively.

  Now, assuming that all of the eight first vibration generators 2a to 2h are driven and the operating conditions are in the operating frequency relationship (frequency relationship) as described above, the respective vibration generators 2a to 2h. The separation container 1 which is the outer vibration body (external vibration body) from the vibration generators 2a to 2h which are generated in the above and slightly different in operating frequency from each other through the vibration transmission members 7, 7. The centrifugal vibration of the sine wave transmitted to is interfered with each other in the separation container 1 and the coal ash C part, and is synthesized to be separated into the separation container 1 and the coal ash C part, for example, in FIG. With the amplitude as shown and the acceleration ratio as shown in FIG. 3 (b), the torsional vibration consisting of a synthetic wave whose amplitude changes periodically is generated. Then, the rolling vibration whose amplitude periodically changes at the predetermined acceleration ratio causes the separation container 1 to swing in a complex manner in the horizontal plane direction, and the mechanical ash C in the separation container 1 is periodically mechanically moved. An impact force is generated, and this mechanical impact force effectively separates the adhesion force between the burned coal ash C1 and the unburned coal C2 and effectively separates them.

  The torsional vibrations shown in FIGS. 3A and 3B are opposed to each other through the central axis O of the separation vessel 1, which has a difference in inverter operating frequency of 12 Hz (frequency difference). The vibration generators 2a and 2e, 2b and 2f, 2c and 2g, and 2d and 2h in a positional relationship are effectively generated.

  3A and 3B show the waveform of the torsional vibration as shown in FIGS. 1 and 2 under the above operating conditions (inverter operating frequency (frequency)). This is when all the first vibration generators 2a to 2h (eight units) installed in a positional relationship are operated, and the number and operating conditions of the first vibration generators 2a to 2h are as follows. Various changes can be made, and the form of the torsional vibration (amplitude, acceleration ratio, etc.) generated thereby can be adjusted as desired.

  For example, if the first vibration generator to be operated is set to four units on the front side and the left side 2e to 2h, and they are operated under the same operating conditions as those in FIGS. 3 (a) and 3 (b), for example, FIG. No. 4 (a) and (b), the vibration is an oscillating vibration having an amplitude and an acceleration ratio.

  Further, for example, the first vibration generator to be operated is only two on the front side 2e and 2f, and when these are operated under the same operating conditions as those in FIGS. 3A and 3B, for example, FIG. As shown in (a) and (b), it becomes a small vibration with a small amplitude and acceleration ratio.

  Further, for example, the first vibration generator to be operated is eight units 2a to 2h that are the same as those in FIGS. 3 (a) and 3 (b), but the adjacent first vibration generators 2a and 2b, When the difference in inverter operation frequency (frequency difference) between 2c and 2d, 2e and 2f, 2g and 2h is reduced from 3 Hz to 2 Hz, for example, the amplitude and acceleration as shown in FIGS. It becomes the vibration of the ratio.

  Further, for example, the first vibration generator to be operated is set to four units on the front side and the left side 2e to 2h, and the same operating conditions (inverter operation frequency of the inverter operating frequency) as those in FIGS. When the operation is performed with the difference (frequency difference) being 2 Hz), for example, the vibration with the amplitude and acceleration ratio as shown in (a) and (b) of FIG.

  In addition, for example, the first vibration generator to be operated is only two on the front side 2e and 2f, and the same operating conditions (difference in inverter operating frequency ( When the operation is performed at a frequency difference (2 Hz), for example, a vibration with a small amplitude and an acceleration ratio as shown in FIGS. 8A and 8B is obtained.

  As described above, the first vibration generators 2a to 2h can appropriately change the frequency according to the specific control conditions by changing the operating conditions (inverter operating frequency or difference between the same frequencies), the number of operating units, and the like. Further, vibration characteristics such as acceleration ratio and amplitude are varied, and an impact action with high separation efficiency is realized.

  On the other hand, the internal vibrating body 3 is formed of a small-diameter cylindrical body whose inside is long in the vertical direction, and is located at the central shaft portion O in the coal ash containing space 1A of the separation container 1 and from the upper side to the lower side. And is suspended in a state where it does not contact the diffuser plate 5 described above. A plurality of (two) second vibration generators 4a and 4b made of vibration motors similar to the first vibration generators 2a to 2h are provided on the outer periphery of the upper end portion of the internal vibration body 3. ing. These two second vibration generators 4a and 4b are provided on both sides of the internal vibration body 3 at positions different from each other by 180 degrees as shown in FIG. 2, for example. 2c, 2d and 2e, 2f are provided facing each other, and in the same manner as in the case of the first vibration generators 2a to 2h, the attachment on the side of the internal vibrator 3 via the vibration transmitting members 7 and 7, respectively. It is connected to the parts 3a and 3b.

  In this case as well, the second vibration generators 4a and 4b generate a centrifugal vibration of a sine wave having a set predetermined vibration frequency (inverter operation frequency) by the eccentric rotation of the rotor shaft, The sinusoidal centrifugal vibration is transmitted to the internal vibration body 3 to cause the internal vibration body 3 to sine-wave vibrate (oscillate) in the horizontal plane direction. A predetermined amount is also present between the second vibration generators 4a and 4b. Of the inverter operating frequency (frequency) of the first and second vibration generators 4a and 4b are adjacent to each other through the coal ash C in the separation container 1 and facing each other. A difference in predetermined inverter operating frequency (frequency) is also provided between the first vibration generators 2g, 2h and 2c, 2d.

  For this reason, the sinusoidal vibration generated in the internal vibrating body 3 itself becomes the same vibration as in the case of the separation container 1 and is opposed to each other via the second vibration generators 4a and 4b and the coal ash C. The two sets of the first vibration generators 2g, 2h and 2c, 2d generate a similar vibration, and the coal ash C itself is effectively subjected to a vibration with an impact.

  As a result, both the separation container 1 and the internal vibrating body 3 cause torsional vibrations as shown in FIGS. 3 to 8 in which the amplitude periodically changes, and the unburned coal C2 accommodated in the separation container 1. The coal ash C contains the torsional vibrations from the first radially outer vibration generators 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h and the second radially inner vibration generator 4a, 4b is generated between the first vibration generators 2g, 2h and 2c, 2d facing each other through the second vibration generators 4a and 4b and the coal ash C. In response to an effective impact force due to the torsional vibration, the adhesion force of unburnt coal C2 having a density difference (specific gravity difference) with the coal ash C1 of 5 to 10 μm or less having high adhesion as described above is effectively cut off. And the fine bubbles supplied through the diffuser plate 5 are effective. As a result of being dispersed and fluidized, the coal ash C1 having a high density sinks downward, while the unburnt coal C2 having a low density is collected in the upper layer of the coal ash containing space 1A. Is realized.

  In particular, in the case of the above configuration, even if the volume of the coal ash accommodating space 1A in the separation container 1 is increased in order to increase the processing capacity, the accommodated coal ash C is merely from the separation container 1 side. In addition, since an impact and separation action due to torsional vibration from the internal vibrator 3 side is received and an effective and uniform separation action from both the inside and outside directions is realized, high separation efficiency can be maintained.

  As described above, in the case of the oscillating fluidized bed type separation apparatus that separates the unburnt coal C2 by applying vibration to the coal ash C containing the unburnt coal C2 to be separated from both the outer side and the inner side of the separation container 1, the separation efficiency can be improved. In order to improve as much as possible, the vibration frequencies of the plurality of internal and external vibration generators 2a to 2h, 4a and 4b, the difference in vibration frequency between the vibration generators 2a to 2h, 4a and 4b, It is necessary to optimally adjust the number of operating the vibration generators 2a to 2h, 4a, 4b, etc., and by doing so, it is possible to obtain vibration forms and vibration characteristics with high separation efficiency only.

  For this reason, in addition to the basic structure of the apparatus main body as described above, the vibratory fluidized bed type separation apparatus of the first embodiment further includes various sensors as described below, a desired control device, and an accessory. It is configured with a device.

(Configuration of sensor, control device, accessory device part)
That is, in the case of the vibration fluidized bed type separation apparatus of the first embodiment, as shown in FIG. 9, for example, the apparatus main body having the structure of FIGS. 1 and 2 further includes coal ash in the coal ash containing space 1A. A powder temperature detection sensor 11 for detecting the temperature of C, a rotational torque meter 12 for detecting the rotational torque of the coal ash C fluidized bed portion in the coal ash containing space 1A, and the coal ash C flow in the coal ash containing space 1A A pressure detector 13 for detecting the fluidized bed pressure in the layer portion, a fluidized air generator 14 for generating fluidized air to be supplied to the fluidized air introduction space 1B of the separation container 1, and the fluidized air in the separation tank 1 An electric heater 15 that warms the fluidized air supplied to the introduction space 1B, a coal ash temperature detection value a of the powder temperature detection sensor 11, a rotation torque detection value b of the rotation torque detector 12, and the fluidized bed pressure detector 13 The fluidized bed pressure detection value c of the coal ash C fluidized bed portion is inputted, the driving state of the first vibration generators 2a to 2h and the second vibration generators 4a and 4b, and the supply of the fluidized air generator 14 A control device 17 for controlling the amount of air and the heat generation temperature of the electric heater 15 are provided.

  The powder temperature detection sensor 11 for detecting the temperature of the coal ash C in the coal ash containing space 1A has an insertion pipe 11a extending downward from the sensor main body by a predetermined length, and a temperature detection means such as a thermistor at the tip thereof. Is provided. And the electric signal from the temperature detection means part is output as a temperature detection signal of coal ash. Further, the rotational torque detector 12 for detecting the rotational torque of the fluidized bed portion of the coal ash C in the coal ash containing space 1A has a rotating shaft extending downward from the detector main body by a predetermined length, The rotating body 12a rotates according to the flow of ash, and an electrical signal corresponding to the rotating torque of the rotating body 12a is output as a rotation torque detection value. The pressure detector 13 for detecting the fluidized bed pressure of the coal ash C fluidized bed portion in the coal ash containing space 1A is a pressure sensor in which the pressure detection sensor portion of the detector body is provided on the side wall portion of the separation tank 1. It attaches in the form connected to the attachment port 1g part, and outputs the electric signal according to the pressure of the coal ash fluidized bed in the said separation tank 1 as a coal ash fluidized bed pressure detection signal.

  The fluidized air generator 14 is composed of, for example, a compressor, a blower or the like, and raises the outside air to a predetermined pressure or higher, and then via the fluidized air supply line 18, The fluidized air introduction space 1B is supplied. The electric heater 15 is driven by, for example, an AC power supply 16 capable of adjusting a power supply voltage, and generates heat according to the AC power supply voltage adjusted to the predetermined value. The fluidized air supplied to the fluidized air introduction space 1B at the bottom of the separation container 1 is heated to a predetermined temperature.

  Further, the control device 17 is configured to include, for example, a microcomputer or other computer control unit and a necessary display. For example, the control device 17 includes a coal ash temperature detection value a by the coal ash temperature detection sensor 11, and the rotational torque detector 12. The rotational torque detection value b and the fluidized bed pressure detection value c of the fluidized bed portion of the coal ash C by the fluidized bed pressure detector 13 are input, and the first vibration generators 2a to 2h and the second vibration generator 4a are input. 4b, the number of drives, the drive frequency, the drive frequency difference, the amount of air supplied from the fluidized air generator 14 to the fluidized air introduction space 1B, the heat generation temperature of the electric heater 15 for heating the supplied air, etc. Control to achieve optimal separation efficiency.

  As described above, a plurality of excitation sources in both the inner and outer directions of the outer first vibration generators 2 a to 2 h provided in the separation container 1 and the inner second vibration generators 4 a and 4 b provided in the internal vibrating body 3. From the above, when a pulsating vibration whose amplitude periodically changes is applied to the coal ash C in the separation container 1, a mechanical impact force due to the interference of a plurality of pulsation vibrations on the coal ash C part in the separation container 1. , And the adhesion between fine powders with different density differences to be separated, such as unburned coal C2 and burned coal ash C1, having a small particle size in coal ash C and a large adhesion is reduced. The characteristics are greatly improved.

  On the other hand, on the bottom side of the separation container 1, a large number of air holes having a pore diameter smaller than the particle diameter 5 μm of the smallest particle in the coal ash C containing the unburned coal C2 or substantially the same diameter are provided. A fluidized gas supply section 1 </ b> B is provided via a diffuser plate 5, and a large number of fine fluidized bubbles are supplied to the entire coal ash C in the separation container 1.

  In this way, the adhesive force between the fine powders having different density differences to be separated is reduced by the mechanical impact force due to the above-mentioned torsional vibration, and the unburned coal C2 having a small particle size with improved dispersibility and burned The particles of the coal ash C1 are greatly fluidized by a large number of fine bubbles (fine spaces) that rise uniformly throughout the coal ash C, and the separation effect between fine powders having different density differences to be separated is obtained. This greatly improves the effective density difference separation.

  In this case, the first vibration generators 2a to 2h and the second vibration generators 4a and 4b that generate the torsional vibration are the vibration frequencies of the vibration generators 2a to 2h, 4a, and 4b, respectively. The difference in vibration frequency between the vibration generators 2a to 2h, 4a and 4b, the number of driven vibration generators 2a to 2h, 4a and 4b, and the fluidized air from the fluidized air generator 14 A control device 17 is provided for controlling the supply amount and the like, and appropriate adjustment control is performed on the generation level, vibration characteristics, and generation amount of fluidized bubbles.

  As described above, in the configuration of the oscillating fluidized bed type separation apparatus according to the first embodiment, the amplitude of the fine powder in the separation container 1 from the plurality of excitation sources, both inside and outside, provided in the separation container 1. Gives a periodic vibration that changes periodically and generates mechanical impact force along with vibration in the powder part, while providing a supply source of fluidized gas on the bottom side of the separation container 1 and appropriately adjusting the supply amount By controlling, fine fluidized bubbles are generated in the powder in the separation container 1 without inducing mixing, and mechanical impact force due to the rolling vibration and fluidization and dispersion by the fine fluidized bubbles are generated. The synergistic effect of the promoting action reduces the adhesion force between fine powders having different density differences to be separated, thereby enhancing the dispersion effect and enabling effective density difference separation.

  In order to generate the mechanical impact force due to the same vibration and the fluidization promoting action by the fine fluidized bubbles most effectively, the vibration frequency of each of the plurality of excitation sources, the plurality of excitations It is necessary to appropriately control the difference in vibration frequency between the sources, the number of driven excitation sources, the amount of fluidized gas supplied from the gas supply source, and the like.

  For this reason, in the vibration fluidized bed type separation device of the first embodiment, the vibration frequencies of the first vibration generators 2a to 2h and the second vibration generators 4a and 4b, which are the plurality of vibration sources, Difference in vibration frequency between the vibration generators 2a to 2h, 4a and 4b, the number of driven vibration generators 2a to 2h, 4a and 4b, and supply of fluidized air from the fluidized air generator 14 A control device 17 for controlling the amount and the like in an optimum state is provided, and the level of vibration generation, the vibration characteristics, the amount of fluidized bubbles generated, etc. are exerted by the mechanical impact force and fine fluidization due to the above-mentioned ringing vibration. The fluidization promoting action by the bubbles is most effectively generated, and it is possible to adjust to an appropriate operating condition that can enhance the separation effect as much as possible.

  Of course, in order to perform such control more appropriately, the temperature of the coal ash C in the separation container 1 as well as the fine powder density and viscosity of the fluidized bed portion of the coal ash C are also detected as described above, It is preferable to perform more effective control as the control parameter.

  As a result, according to the vibration fluidized bed separation device of the powder of the first embodiment, it is effective even in the case of coal ash and the like containing a lot of fine particles having a particle size of 5 to 10 μm or less with high adhesion. Adhesive force can be reduced, coal ash can be fluidized and dispersed in a stable state, and unburned coal can be separated accurately. Therefore, it is not necessary to increase the superficial velocity more than necessary, and no large bubbles are generated in the coal ash, so that stable operation is possible.

  As a result, the recovery efficiency of unburned coal is improved, and energy resources can be used as effectively as possible. Further, when the burned coal ash C1 obtained by separating and recovering the unburnt coal C2 is used as a raw material for fly ash cement, the conventional problem does not occur.

<Second embodiment for carrying out the invention of this application>
Next, FIG. 10 is based on the premise of the configuration of the vibration fluidized bed type separation device for powder according to the first embodiment for carrying out the invention of this application, and fluidized air supplied into coal ash in the device. 1 shows a configuration of a vibrating bed separator for powder according to a second embodiment for carrying out the invention of the present application, which is provided with a charge eliminating function.

  Coal ash C emitted from boiler facilities such as the above-mentioned coal-fired power plants has a predetermined level of static electricity, and the adsorption force is exerted between the burned coal ash particles C1 and the unburned coal particles C2 under the influence of the static electricity. There is a problem that the above-described dispersion, flow, and separation actions are reduced.

  The second embodiment is configured to solve such a problem. As shown in the drawing, the purge air generator 23 that blows out a predetermined amount of air and the purge air from the purge air generator 23 are described above. A purge air supply line 19 that is supplied into the fluidized air supply space 1b at the bottom of the separation container 1 and a positive charge in the constituent molecules of the purge air that are provided in the middle of the purge air supply line 19 and that flow in the purge air supply line 19 There is provided a static elimination air supply device comprising a static elimination device 20 for providing a purge air and a purge air supply nozzle 22 provided on the tip side of the purge air supply line 19. The purge air supply nozzle 22 is configured to have a predetermined length, and a nozzle insertion port in which a tip side nozzle port (blowing port) is provided in a side wall portion of the fluidized air supply space 1 b at the bottom of the separation container 1. It is installed in such a way that a predetermined length is inserted into the interior from 21. The other parts of the configuration are all the same as those in the first embodiment and have the same effects.

  According to such a configuration, the molecules of fluidized air supplied into the fluidized air supply space 1b at the bottom of the separation container 1 are charged with a positive or negative polarity by the purge air from the purge air generator 23. The molecules of fluidized air that are charged positively or negatively are supplied into the coal ash containing space 1A of the separation container 1 through the air diffusion holes of the air diffusion plate 5 described above. .

  As a result, the ion balance between the constituent particles of the coal ash C containing unburned coal is improved by the same air, the adhesion force due to static electricity is reduced, and dispersibility, fluidity, and separation are improved.

In this case, the purge air generation amount from the purge air generation device 23 and the charge removal amount in the static eliminator 20 are also controlled to appropriate conditions by the microcomputer control device 17 including the above-described microcomputer. <Third embodiment for carrying out the invention of this application>
Next, FIG. 11 and FIG. 12 are based on the configuration of the vibration fluidized bed type separation apparatus for powder according to the first embodiment for carrying out the above application, and in the apparatus, the separated separation container upper layer part. The third embodiment for carrying out the invention of this application is provided with an overflow type unburnt coal discharge port 1C for discharging unburnt coal of the present type and improving the discharge efficiency from the overflow type unburnt coal discharge port 1C. The structure of the vibration fluidized bed type | mold separation apparatus of the powder which concerns on a form is shown.

  As described above, according to the vibrating fluidized bed separation device of the powder of the first embodiment for carrying out the invention of this application, in the upper layer portion of the cylindrical separation container 1 containing unseparated coal ash C Unburnt coal C2 separated from the burned coal ash C1 is gradually laminated. Therefore, continuous separation cannot be performed unless the unburned coal C2 is sequentially discharged and recovered.

  Therefore, in the configuration of the third embodiment, first, an overflow type unburned coal discharge port 1C for discharging unburnt coal C2 is formed in a part of the side wall portion on the upper end side of the separation container 1, and the unburned coal discharge port is formed. An unburned coal discharge duct 24 having an unburned coal discharge passage 24a directed downward is provided outside 1C, and the unburnt coal C2 accumulated in the upper layer portion with the progress of the separation action is subjected to gravity and vibration. Configure to use and discharge.

  However, in the case of the unburnt coal C2, although it has a certain degree of fluidity, the viscosity is higher than that of water and the like, and it does not necessarily flow out efficiently from the upper layer portion in the separation container 1 only by gravity and vibration.

  Therefore, as shown in FIG. 11, a rotating scraper 25 that rotates in the horizontal direction around the internal vibrating body 3 is provided in the separation container 1, and is arranged at an interval of 180 degrees in the diameter direction. By rotating the discharge vanes 25a, 25a, the unburnt coal C2 is smoothly swept out from the overflow type unburnt coal discharge port 1C to the unburnt coal discharge passage 24a side of the unburnt coal discharge duct 24 and efficiently discharged. I am doing so.

  The sweeping blades 25a and 25a of the scrubber 25 are fixed to the outer periphery of a sleeve member 25b that is loosely fitted to the outer periphery of the internal vibrator 3, and a pulley 25c is provided at the upper end of the sleeve member 25b. The pulley 25 c is linked to a drive pulley 26 a of the screvers drive motor 26 via a predetermined belt member 27. And then. The scavenger drive motor 26 is driven to rotate the sweeping blades 25a, 25a to efficiently and continuously discharge the unburned coal C2.

  For example, as shown in FIG. 12, the sweeping blades 25a and 25a have an up-and-down width corresponding to the thickness of the unburned coal layer to be stacked, and have a circular arc shape in plan view that is convex forward in the rotational direction. Thus, effective sweeping in the centrifugal direction during rotation is possible.

<Fourth embodiment for carrying out the invention of this application>
Next, FIG. 13 and FIG. 14 are based on the premise of the configuration of the vibration fluidized bed type separation apparatus for powder according to the first embodiment for carrying out the invention of the application, and in the apparatus, the separated separation container is used. An overflow type unburned coal discharge port 1C for discharging unburned coal in the upper layer portion is provided, and an overflow nozzle for blowing unburned coal is further provided to discharge the unburned coal C2 from the overflow type unburnt coal discharge port 1C. The structure of the vibration fluidized bed type | mold separation apparatus of the powder which concerns on 4th form for implementing invention of this application which improved this is shown.

  As described above, according to the powder fluidized bed separator of the first embodiment for carrying out the invention of this application, the upper part of the cylindrical separation container 1 containing unseparated coal ash C The unburned coal C2 separated from the burned coal ash C1 is gradually stacked. Therefore, continuous separation cannot be performed unless the unburned coal C2 is sequentially discharged and recovered.

  Therefore, in the configuration of the fourth embodiment, first, an overflow type unburnt coal discharge port 1C for discharging unburnt coal C2 is formed in a part of the side wall portion on the upper end side of the separation container 1, and the unburnt coal discharge port is formed. An unburned coal discharge duct 24 having an unburned coal discharge passage 24a directed downward is provided outside 1C, and the unburnt coal C2 accumulated in the upper layer portion with the progress of the separation action is subjected to gravity and vibration. Configure to use and discharge.

  However, in the case of the unburned coal C2, as described above, although it has a certain degree of fluidity, the viscosity is higher than that of water or the like, and it is not always necessary to move from the upper layer in the separation container 1 only by gravity or vibration. It does not flow out efficiently.

  Therefore, in the configuration of the fourth embodiment, as shown in FIGS. 13 and 14, the unburned coal C2 stacked in the separation container 1 is moved from the circumferential direction in the separation container 1 to the discharge port 1C. An overflow nozzle 26 to be blown out is provided, and a configuration in which unburnt coal C2 is smoothly pushed out from the discharge port 1C by air blown out from the overflow nozzle 26 is adopted.

That is, in the configuration of the fifth embodiment, for example, as shown in FIGS. 13 and 14, it is located on the outer peripheral portion (upper surface of the unburned coal C2 stack) of the internal vibrating body 3 at the upper end of the separation container 1 and is horizontal. A plurality (four) of air pipes 26a, 26a, 26a, 26a having a plurality of (four) air nozzles that blow out air slightly downward from the direction are provided radially at intervals of 90 degrees, and the air pipes 26a, 26a Extrusion air having a predetermined pressure is supplied from an extruding air generator 27 such as a blower via an extruding air supply line 28, and a predetermined flow rate is obtained from a plurality of air nozzle portions in the axial direction of the air pipes 26a, 26a, 26a, 26a. By blowing out a quantity of air in the direction of the unburnt coal discharge port 1C, the unburnt coal C2 is discharged smoothly and efficiently.
<Fifth embodiment for carrying out the invention of this application>
Next, FIG. 15 and FIG. 16 are based on the premise of the configuration of the vibration fluidized bed type separation apparatus for powder according to the first embodiment for carrying out the invention of the application, and in the apparatus, the separated unburned coal is separated. The fifth embodiment of the invention of the present application is provided with an unburned coal discharge port and an unburned coal discharge duct for causing the fuel to overflow by gravity, and improving the discharge efficiency from the unburned coal discharge port and the unburned coal discharge duct The structure of the vibration isolator which concerns on is shown.
As described above, according to the vibration separation device having the configuration of the first embodiment, the separated unburnt coal C2 is gradually stacked on the upper layer portion of the cylindrical separation container 1 containing the unseparated coal ash C. . Therefore, the unburned coal C2 must be discharged and collected sequentially.

  For this reason, also in the configuration of the fifth embodiment, an unburned coal discharge opening 1C is formed in a part of the side wall portion at the upper end of the cylindrical separation container 1 as in the third and fourth embodiments. An unburned coal discharge duct 29 having an unburned coal discharge passage 29a directed downward with respect to the opening 1C is provided, and the unburnt coal C2 accumulated in the upper layer portion with the progress of the separation action is separated by gravity and Although it is conceivable to use a flow action in the circumferential direction due to vibration, the unburnt coal C2 in the upper part of the separation container 1 can be obtained simply by providing the opening 1C and the unburnt coal discharge duct 29. It is not necessarily discharged efficiently.

  Therefore, in the fifth embodiment, for example, as shown in FIGS. 15 and 16, in the circumferential direction of the coal ash C due to the beat vibration from the opening portion of the separation container 1 to the vicinity of the inner side internal vibrating body 3. A U-shaped trough member 30 that scoops up the unburned coal C2 during the rotational movement of the unburned coal C2 is provided, and the unburned coal C2 scooped up by the saddle member 30 descends into the unburned coal discharge passage 29a of the unburned coal discharge duct 29. It discharges | emits by gravity using the inclined surface 30a.

  According to such a configuration, an effective unburned coal C2 utilizing the rotational movement (flow) of the coal ash C in the circumferential direction due to beat vibration and gravity by a simple configuration in which the dredging member 30 having a U-shaped cross section is provided. Can be discharged.

<Sixth embodiment for carrying out the invention of this application>
Next, FIG. 17 is based on the premise of the configuration of the vibrating fluidized bed type separation apparatus for powder according to the first embodiment for carrying out the invention of the application, and in this apparatus, the side wall of the separation container which is an external vibrating body. The structure of the vibration separation apparatus which concerns on the 6th form for implementing invention of this application which provided the inlet of the coal ash from which unburned coal is unseparated by the part side is shown.

  In the case of the configuration of the vibration separating apparatus having the configuration of the first embodiment, as a method for introducing coal ash C for separating unburned coal into the coal ash containing space 1A of the separation container 1, for example, a cylindrical separation container 1 A method of using the upper end side opening of the tube, a method of using the cylindrical internal vibrator 3 as a charging duct and providing a supply port at the lower part thereof, an opening for introduction and a charging for the side wall of the separation container 1 Various charging methods, such as a method of providing a duct, can be considered.

  However, since the separated unburnt coal C2 is stacked in the upper end side opening portion of the separation container 1, it is difficult to introduce new unseparated coal ash C from the same portion.

  So, in this 6th form, while providing the opening 30a for unseparated coal ash in the intermediate part of the side wall part of the said separation container 1, unseparated coal ash injection | throwing-in with respect to the opening 30a for the same coal ash introduction A duct 30 is provided, the upper end portion of which is a hopper portion 30b, and the coal ash carry-in device 31 is made to correspond to the hopper portion 30b to input unseparated coal ash C. Other configurations are all the same as those of the first embodiment and operate in the same manner.

  In such a configuration, since the coal ash introduction opening 30a and the coal ash introduction duct 30 are integrated with the separation tank 1 which is an external vibrator, the coal ash introduced from the hopper 30b. Is vibrated at the stage of passing through the duct part 30 and is supplied into the separation tank 1 while producing dispersion and separation actions. Therefore, dispersion and separation efficiency are increased.

<Seventh embodiment for carrying out the invention of this application>
Next, FIG. 18 is based on the premise of the configuration of the vibration fluidized bed type separation device for powder according to the first embodiment for carrying out the invention of this application. In this device, the cylindrical shape itself vibrates and vibrates. A powder fluidized bed fluidized vibration separation device according to a seventh embodiment for carrying out the invention of this application, in which coal ash in an unseparated state of unburned coal is introduced using an internal vibrator. The configuration is shown.

  That is, in the configuration of the seventh embodiment, for example, as shown in FIG. 18, the cylindrical internal vibrating body 3 that is located in the central portion of the coal ash containing space 1A of the separation container 1 and beats and vibrates itself. A hopper portion for charging coal ash C in a state where unburned coal C2 is not separated is formed on the upper end portion 3c side, and unburned coal charged from the hopper portion on the outer periphery of the lower end portion 3d of the internal vibrator 3 is formed. Coal ash inlets 3e, 3e,... Are provided through which the coal ash C in an unseparated state of C2 is introduced outward in the radial direction. In addition, a coal ash carry-in device 31 similar to that of the sixth embodiment is associated with the upper end portion 3c side hopper portion of the internal vibrator 3.

  The coal ash inlets 3e, 3e,... On the lower end portion 3d side of the internal vibrator 3 are further provided as bottom members on the inner side of the cylindrical body portion of the internal vibrator 3 and projecting upward in a coaxial state. A conical cover 3f is provided, and predetermined fluidized air outlets 3g, 3g,... Are provided in the circumferential direction at the tapered surface portion of the conical cover 3f. Fluidized air is blown out from the ports 3g, 3g,... Obliquely upward (see arrows).

  For this reason, according to the structure of this 7th form, coupled with the fact that the cylindrical internal vibrating body 3 itself that is a coal ash charging duct vibrates effectively, the same portion is effectively fluidized from below. Air is supplied, and unseparated coal ash C supplied into the separation container 1 is supplied into the separation container 1 while being effectively dispersed and fluidized in the internal vibrator 3, and the first The ash clogging is less likely to occur than in the configuration of the sixth embodiment, and the dispersion and separation efficiency of the burned coal ash C1 and the unburnt coal C2 are increased.

<Eighth embodiment for carrying out the invention of this application>
Next, FIG. 19 is based on the premise of the configuration of the vibration fluidized bed separation device of the powder according to the first embodiment for carrying out the invention of this application. The structure of the vibration fluidized bed type | mold separation apparatus of the powder which concerns on the 8th form for implementing invention of this application made to discharge spent coal ash is shown.

  The burned coal ash C1 obtained by separating the unburned coal C2 as described above can flow out relatively easily by weight if a discharge port and a discharge valve are provided at the bottom of the coal ash containing space 1A of the separation container 1. it can. However, when discharged in the operation state of the apparatus, since the burned coal ash C1 is in a fluidized state, there is a problem that the flow rate is high and the valve body of the discharge valve is quickly worn.

  Therefore, in the eighth embodiment, for example, as shown in FIG. 19, a T-type air diffusion nozzle having a predetermined length is inserted outside the burned coal ash discharge port 1h provided in the lower portion of the side wall of the separation container 1. The duct 40 is connected, and a sufficiently long diffuser nozzle 37 is inserted and installed. The fluidized air from the second fluidized air generator 14B is connected to the diffuser nozzle 37 via the fluidized air supply line 18b. It is comprised so that it can supply.

  In this case, a filter regulator 35 and an air flow rate adjusting valve 36 are provided in the middle of the fluidized air supply line 18b, and the flow rate of air supplied by the microcomputer-type control device 17 similar to that already described. It is designed to be adjusted appropriately.

  By the way, as described above, the aeration nozzle insertion duct 40 has a T-shaped structure as a whole, and has an axial one end side opening portion with respect to the burned coal ash C1 outlet 1h at the lower part of the separation vessel 1. The diffuser nozzle 37 is attached to the opening on the other end side. Further, as shown in the drawing, the air suction in the coaxial state of the burned coal ash discharge duct 42 that forms a Y-shaped structure as a whole through the flexible hose 41 with a coiled bone is formed in the opening 40b portion in the upper end crossing direction. It connects to the lower end opening of the side duct 42a.

  On the other hand, the upper end side opening of the air suction side duct 42a of the burned coal ash discharge duct 42 is connected to the air suction machine 44 of the blower structure via the connecting member 42c and the air pipe 43, while The opening is connected to the upper end side opening of the burned coal ash flow down duct 42b branched downward, and the upper end side opening of the air suction side duct 42a is connected to the burned coal ash flow down duct 42b. The communication space branched from each other with the upper end side opening portion forms a separation space in which air is sucked upward and the burned coal ash C1 flows downward.

  In such a configuration, the burned coal ash C1 separated from the unburned coal C2 and discharged into the aeration space 40a of the aeration nozzle insertion duct 40 from the lower side of the separation container 1 is fluidized. The amount of fluidized air that is efficiently fluidized by an appropriate amount of fluidized air supplied from the air generator 14B and supplied from the fluidized air generator 14B and the amount of coal ash C in the separation container 1 The inside of the flexible hose 41 is easily blown up and lifted as shown in the figure by the outflow pressure corresponding to the (head), and enters the diffuser nozzle insertion duct 40 in a stable air lifting state. The separation space part between the air suction side duct 42a for sucking fluidized air from the air nozzle 37 and the burned coal ash flow down duct 42b for flowing down the burned coal ash C1 to the outside. Until to be continuously supplied.

  Then, in the supplied separation space portion, the fluidized air rising to the upper side connecting member 42c side is sucked and smoothly discharged by the air suction unit 44, while the gravity causes the side air to flow sideways. The burned coal ash C1 flows smoothly to the burned coal ash flow down duct 42b side.

  Moreover, in the configuration of this embodiment, the smooth air lifting action itself generated as described above substantially exhibits the valve body function, and the conventional valve body that wears out becomes unnecessary. Problems such as valve wear and ash leakage are reliably eliminated, making it extremely durable.

  At the same time, the discharge amount of the burned coal ash C1 can be easily adjusted basically by adjusting the amount of fluidized air supplied to the diffuser nozzle 37, so that the discharge amount can be easily adjusted.

  In addition, when the burned coal ash C1 is not discharged, the fluidized air generator 14B that supplies the fluidized air to the diffuser nozzle 37 is stopped, whereby the burned coal ash flow down duct 42b is material-sealed. do it.

  In FIG. 19, the fluidized air generator for supplying fluidized air to the fluidized air supply space 1B at the bottom of the separation container 1 is denoted by reference numeral 14A, and the fluidized air supply line from the apparatus is denoted by reference numeral 18a. This corresponds to the reference numerals 14 and 18 in the configuration shown in FIG.

<Ninth embodiment for carrying out the invention of this application>
Next, FIG. 20 is based on the premise of the configuration of the vibrating fluidized bed type separation device for powder according to the first embodiment for carrying out the invention of this application, and a plurality of vibrating fluidized bed type separation devices having the same configuration are used. The powder according to the ninth embodiment for carrying out the invention of this application, in which both the unburnt coal C2 and the burned coal ash C1 constitute a vibration fluidized bed separation system of powder with higher separation accuracy. 1 shows the configuration of a vibrating fluidized bed type separation device.

  The vibratory fluidized bed type separation apparatus according to the first embodiment described above has a separation performance enough to withstand practical use. However, there are cases where separation accuracy as high as possible is required depending on the application. In addition, when a large amount of processing is assumed, separation can be performed more efficiently than when one unit is operated for a long time. Multiple separation devices can be combined in multiple stages and separated sequentially in multiple stages. Ability can be improved.

  The ninth embodiment is configured from such a viewpoint. For example, as shown in FIG. 20, the vibration fluidized bed type separation apparatus having the configuration of the first embodiment described above (however, charging of coal ash C is performed. As the method, the first to third three adopting the charging method according to the eighth embodiment is adopted, and the first to third vibration separating devices A1 to A3 are, for example, as shown in FIG. The unburned coal C2 separated from the burned coal ash C1 by the first oscillating fluidized bed separation device A1 is supplied again to the second oscillating fluidized bed separation device A2 to be converted into the burned coal ash C1 and the unburned coal C2. The first system for separation, the burned coal ash C1 separated from the unburned coal C2 by the first vibrating fluidized bed separator A1 is supplied again to the third vibrating fluidized bed separator A3 to supply the unburned coal C2. And a second system that separates the coal ash into burned coal ash C1 Configure beam, improves the unburned C2 and burnt coal ash C1 each separation accuracy, separation efficiency is characterized in that up the separation performance.

  That is, in the system, firstly, the first oscillating fluidized bed type coal ash C generated in the boiler facility 60A such as a coal-fired power plant and containing unburned coal C2 stored in the storage tank 61 is used. It inputs from the internal vibrating body 3 of the separation apparatus A1, and is primarily separated into unburned coal C2 and burned coal ash C1. Next, the unburned coal C2 separated by the first oscillating fluidized bed separator A1 in the first stage is introduced from the internal vibrator 3 of the second oscillating fluidized bed separator A2 in the second stage. Then, it is separated again into burned coal ash C1 and unburned coal C2. As a result, the coal ash C1 is removed with higher accuracy from the unburned coal C2 that still contains a certain amount of the burned coal ash C1 that has been primarily separated and recovered, and the unburned coal C2 having a higher purity. Is recovered. This high-purity unburnt coal C2 is supplied to and stored in the unburnt coal storage tank 62, and is introduced into the fuel supply line provided with the blower 48 for supplying unburnt coal as needed via the fuel introduction unit 49. It is supplied to the boiler facility 60B.

  Further, the high-purity burned coal ash C1 separated by the second oscillating fluidized bed separator A2 in the second stage is stored in a predetermined storage tank 63 as a raw material such as fly ash cement, for example. Eventually, it is loaded and transported into the accommodating portion 50a of the transport means 50 such as a truck.

  On the other hand, the burned coal ash C1 separated by the first oscillating fluidized bed separator A1 in the first stage is separated from the internal vibrator 3 of the third oscillating fluidized bed separator A3 in the second stage. The unburnt coal C2 is separated with higher accuracy. The separated high-purity unburnt coal C2 is supplied and stored in the unburnt coal storage tank 62, and then supplied to the boiler facility 60B through the fuel introduction portion 49 in the same manner as described above. Further, the high-purity burned coal ash C1 from the second-stage third fluidized fluidized bed separator A3 from which the unburned coal C2 has been separated and removed with high accuracy in this way is the second vibratory fluid. Similar to the burned coal ash C1 from the stratified separator A2, it is stored in a predetermined storage tank 63 as a raw material such as fly ash cement.

  According to such a configuration, efficient separation performance is realized and effective in cases where separation accuracy as high as possible as described above is required, or when a large amount of processing is required. The processing capacity can be improved.

  1 is a separation container, 1A is a coal ash containing space, 1B is a fluidized air introduction space, 2a to 2h are first vibration generators, 3 is an internal vibrator, 4a and 4b are second vibration generators, A diffuser plate, 11 is a powder temperature detecting means, 12 is a fluidized bed viscosity detecting means, 13 is a fluidized bed pressure detecting means, 14 is a fluidized air generator, 15 is a temperature heater, and 17 is a control device.

Claims (1)

A cylindrical separation container, which is an external vibrating body that contains powders having different density differences to be separated, a diffuser hole provided in the entire bottom surface of the separation container, and a central axis portion in the separation container A cylindrical internal vibrating body suspended downward from above, a plurality of vibration motors provided on the outer peripheral side of the separation container and having different frequencies for vibrating the separation container, Fluidized from the lower side of the separation container through the air diffuser holes at the bottom of the separation container, provided on the internal vibration body side, and each having a plurality of vibration motors each having a different frequency to vibrate the internal vibration body A fluidized gas supply device for supplying gas and generating fine fluidized bubbles in the powder in the separation container, and the powder in the separation container by a plurality of vibration motors on the outer peripheral side of the separation container When a torsional vibration is applied from the outside in the radial direction In addition, a vibrating fluidized bed type separation device that enables density difference separation by applying a whirling vibration from the radially inner side to the powder in the separation container by a plurality of vibration motors on the internal vibration body side. The cylindrical internal vibrating body has an upper end formed at the powder supply port with different density differences to be separated and a lower end with the powder having different density differences to be separated into the separation container. Formed in the inlet, and the inlet into the separation container forms the bottom of the cylindrical internal vibrator, and the flow supplied from the fluidized gas supply device in the circumferential direction of the conical surface An upwardly convex conical cover provided with a gasification gas outlet, and a powder outlet hole formed in the circumferential direction of the peripheral wall portion of the internal vibrating body outside the conical surface of the conical cover, Powders with different density differences to be separated are Through a cylindrical internal vibrator dispersed in the separation vessel, vibrating fluidized bed type separation apparatus of the powder is characterized in that is adapted to be introduced in a fluidized state.

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