KR100485223B1 - Apparatus for sludge dry using air conveying and method thereof - Google Patents

Abstract

To provide an apparatus for drying sludge by air transfer, an apparatus for drying sludge by high speed movement and collision of sludge particles, an apparatus for drying sludge without an external heat source, an apparatus for drying sludge by air transfer to completely eradicate pathogenic bacteria, an environment friendly sludge drying apparatus without discharge of air pollutants or odorous gas, and a method for drying sludge by air transfer using the apparatus. An apparatus for drying sludge comprises: a sludge injector(1) for supplying the powdered sludge by rotating rotary wheels in a body frame, thereby powdering sludge; an air transfer unit(2) which is connected to a lower part of the sludge injector, to an upper end of which an air blower(21) is connected centering around a connection position of the sludge injector, and to a lower part of which an air flow rate amplifier(22) is connected, the air flow rate amplifier comprising a concentric one side reduced pipe of which diameter is gradually reduced, and air flow rate amplifier housing, and a first air injection port(222) capable of supplying air into a space between the air flow rate amplifier housing and the one side reduced pipe; a multistep cyclone dryer(3) which is connected to the air transfer unit, to the upper surface of which a plurality of vertical bars(31) are connected, and which comprises a reverse conical throttle inlet on the bottom of cyclone chamber, an inner diameter pipe of a central part of the cyclone chamber and a second air injection port(34) formed on the side surface of the throttle inlet to supply air; an air supply header(23) for supplying air to the first air injection port and the second air injection port by receiving air from the air blower; a cyclone separator(4) which is connected to a transfer pipe connected to the multistep cyclone dryer, to an upper part of which an air exhaust device(41) is connected such that residual air is exhausted from the air exhaust device, and in which sludge solid is collected on the bottom of the cyclone chamber; and an automatic discharge device connected to a lower part of the cyclone separator to discharge dried solids.

Description

Apparatus for Sludge Dry Using Air Conveying and Method

Field of invention

The present invention relates to a sludge drying apparatus using air transport. More specifically, the present invention relates to an environmentally friendly sludge drying apparatus capable of drying sludge without using a heat source.

Background of the Invention

The sludge that has been processed in the conventional wastewater treatment plant is dehydrated to reduce the water content, but the final disposal of the residual material, the dewatered sludge, is a social problem. According to the statistics of 2001, 2 million tons of sewage sludge is generated annually in domestic sewage treatment plants. At present, disposal of sewage sludge and other dewatered sludges is solved by ocean dumping, landfilling, incineration and recycling, but about 80% of dewatered sludge It is treated as a low-cost ocean dumping.

Under the international convention, marine dumping on the high seas has been banned since 2002, but domestic dumping is being carried out while fearing the pollution of the marine environment due to the lack of an alternative. However, in the near future, it is necessary to completely prohibit sludge offshore dumping, so there is an urgent need for technology that can minimize the amount of sludge at the lowest possible energy cost.

Therefore, sludge drying technology is essential to reduce the cost of final treatment such as incineration, incineration and incineration by reducing sludge produced by wastewater treatment before final disposal.

Conventional drying methods are mainly used thermal drying (thermal dry) method, there is a direct drying method and indirect drying method. In the direct drying method, the material is directly heated by a burner flame of 800 ° C. or higher in a drying furnace, for example, a rotary kiln. Indirect drying method is heated by indirectly transferring heat to the material by using steam, hot air and heater of 200 ℃ or more, for example, rotary drum, rotary disk or hot air convection drying. However, the above-described thermal drying methods have a disadvantage in that a lot of fuel is consumed and exhaust gas is generated, and a cost for processing thereof is consumed.

In addition, methods such as spray dry, air dry or flash dry have recently been developed for the pharmaceutical and food applications, but this method also uses heat, which is a thermal drying process and is expensive to use for sludge drying. There is a disadvantage.

On the other hand, in order to overcome the problems caused by drying the sludge using the heat drying method as described above, devices using air transport have been developed, but these devices have a problem that does not completely eliminate pathogenic bacteria.

In order to solve the above problems, the present inventors are composed of a sludge injector, an air feeder including an air flow amplifier, a multi-stage cyclone dryer, a cyclone separator including a microwave generator, and an automatic discharge device, thereby using sludge particles using air transport. It is to develop a device that can dry the water of sludge without external heat source by separating the water from water by moving it at high speed and generating frictional heat by collision between particles.

It is an object of the present invention to provide an apparatus for drying sludge using air transport.

Another object of the present invention is to provide an apparatus capable of drying the sludge by using high-speed movement of the sludge particles and collision between particles.

Another object of the present invention is to provide an apparatus capable of drying sludge without using an external heat source.

Still another object of the present invention is to provide a sludge drying apparatus using air transport that can completely eliminate pathogenic bacteria.

Still another object of the present invention is to provide an environmentally friendly sludge drying apparatus that does not discharge air pollutants or odorous gases.

It is an object of the present invention to provide a method of drying sludge using air transport.

The above and other objects of the present invention can be achieved by the present invention described in detail below.

Summary of the Invention

The sludge drying apparatus of the present invention comprises: a sludge injector for supplying the sludge finely by rotating the rotary wheel in the main body frame; An air blower is connected to the lower portion of the sludge injector, and an air blower is provided at an upstream end of the sludge injector connection position, and a concentric type reduction tube and an air flow amplifier housing gradually decreasing in diameter downstream thereof, and an air flow amplifier. An air conveying apparatus in which an air flow amplifier including a first air inlet for supplying air to a space between the housing and the shortening reduction tube is provided; A second air which is connected to the air transfer device, and has a plurality of vertical bars on the upper surface thereof, which is located on the side of the throttle inlet at the bottom of the cyclone chamber, the inner tube at the center of the cyclone chamber, and the throttle inlet A multistage cyclone dryer including an inlet; An air supply header receiving air from the air blower and supplying air to the first air inlet and the second air inlet; A cyclone separator connected to a transfer pipe connected to the cyclone dryer, to which an air discharge device for discharging residual air is connected, and to which sludge solids are collected at the bottom of the cyclone chamber; And an automatic discharge device connected to a lower portion of the cyclone separator to discharge dry solids. Characterized in that consists of.

 The sludge injector is preferably provided with a mesh screen net at the sludge outlet below.

It is preferable that the said multistage cyclone dryer is 2-5 stages.

The cyclone separator preferably further includes a microwave generator capable of further reducing the moisture content by applying microwaves to the sludge particles therein.

In addition, the sludge drying apparatus of the present invention may be manufactured to be movable by installing the sludge drying apparatus in a container.

The sludge drying method of the present invention comprises a first step of micronizing sludge particles by passing the supplied sludge through a sludge injector; The sludge particles moved through the sludge injector to the air feeder are moved together with the air supplied from the air blower, and the moving speed is increased by passing through the short-circuit reduction pipe in the air flow amplifier to enter the cyclone dryer. step; A third step of supplying air to the first air inlet and the second air inlet from an air supply header supplied with air from the air blower; The sludge particles flowing into the cyclone dryer from the air transport device are rotated and dried while forming turbulence by a plurality of vertical bars connected to the upper surface, and the dried sludge particles are inverted by the air and the throttle inlet supplied from the second air inlet. A fourth step of repeating a process of being dried by being transferred to an upper feed pipe through an inner diameter pipe as a flow; The sludge particles flowing into the cyclone separator in the second air transport device are separated from the air by descending the cyclone separator chamber and separated from the air, and the separated air is discharged to the air discharge device, and the dried sludge solids are disposed at the bottom of the cyclone separator chamber. A fifth step of gathering; And a sixth step in which the sludge solids collected at the bottom of the cyclone separator chamber are transferred to an automatic discharge device, processed, and discharged. Characterized in that consists of.

Hereinafter, with reference to the accompanying drawings will be described in detail the contents of the present invention.

Detailed Description of the Invention

Figure 1a is a schematic configuration diagram of a sludge drying apparatus according to an embodiment of the present invention, as shown in the sludge drying apparatus is a sludge injector 1, an air conveying apparatus 2 including an air flow rate amplifier 22 ), A multi-stage cyclone dryer (3), a cyclone separator (4), an automatic discharge device (5) and an air supply header (34) at the bottom thereof, showing a sludge drying device installed in the container to enable movement have.

Figure 1b is the overall process of the sludge drying apparatus of the present invention, as shown in the sludge injector 1 is supplied to the air feeder (2) by micronizing the sludge supplied, by the air blower (21) After the mixture of sludge and air is passed through the air flow amplifier 22 to increase the flow rate of the sludge particles, the sludge particles are dried by the high speed movement and collision of the sludge particles in the multistage cyclone dryer 3, and the cyclone separator ( In 4), the solids and the air are separated and dried by the microwave generator 43, and then the separated solids are discharged to the automatic discharge device 5. In addition, the air supply header 23 receives air from the air blower 21 and supplies air to the first air inlet 222 and the second air inlet 34.

FIG. 2 relates to a sludge injector 1 according to the invention, FIG. 2A is a perspective view of one embodiment of the sludge injector 1, and FIG. 2B is a cross-sectional view thereof. As shown in FIG. 2B, the sludge injector 1 is composed of a rotary wheel 11 and a body frame 12 therein. The rotary wheel 11 has a rotary shaft 111 at the center thereof, a wheel rib 114 connected to the rotary shaft to divide the rotary wheel into several equal parts, a paddle 112 connected to the wheel rib 114 and in contact with the inner wall of the body frame. ) And a shoe 113 connecting the ends of the paddles. The rotary shaft 111 receives the constant rotational force and rotational speed from the connected motor to rotate the rotary wheel (11).

By replacing the paddle 112 and the shoe 113, by adjusting the distance between the rotary wheel 11 and the inner wall of the main frame 12 to optimize the amount of sludge introduced into the sludge injector 1 by sludge caused by air Ensure fine grinding of.

FIG. 2C is a cross-sectional view of another embodiment of the sludge injector 1, in which a mesh screen net 13 is provided on the inner wall of the body frame 12 and the sludge outlet below the sludge injector 1 to crush the size of the sludge particles smaller. ) Is installed. The sludge introduced into the sludge injector 1 flows into the space between the paddle 112 and the shoe 113, and the paddle 112 rotates the sludge on the mesh screen net 13 by the rotational force of the rotary wheel 11. By pushing in the direction, the sludge passes through the mesh screen net 13 and is crushed to a predetermined size and injected into the air feeder 2.

The smaller the size of the crushed sludge particles is, the larger the heat transfer ratio is. The size of the sludge particles is determined by the sludge inflow rate, the rotation speed of the rotating wheel, and the scale size of the mesh screen net. The size of the sludge particles passed through the sludge injector 1 is preferably 10 ~ 300 ㎛. When the size of the sludge particles exceeds 300 µm, the transport and drying effects are lowered. The rotation speed of the rotary wheel is preferably 300rpm or less, which can be adjusted using an inverter.

Although there is a predetermined space for conveying the crushed sludge between the shoe of the rotary wheel 11 and the inner wall of the main frame 12, the liquid film is formed so that the flow of air in the lower air transfer pipe does not flow into the sludge injector Maintain adequate spacing.

In the sludge injector 1 according to the present invention, the sludge cake is freely introduced from the cake hopper of the existing sewage and wastewater treatment plant, or may be directly introduced through a screw conveyor or a belt conveyor from a dehydrator such as a belt press or a centrifugal dehydrator. The sludge injector upper portion is preferably designed in the form of a fallopian tube so that the sludge is prevented during inflow.

Sludge injector 1 according to the present invention preferably has a frame cover 121 that can be separated by a separate fastening bolt 122 for adjusting the outer diameter of the rotating wheel.

Parts such as the rotary wheel 11, the rotary shaft 111, paddle 112, shoe 113 and the wheel rib 114 has a sufficient durability against the load load of the sludge flowing from the cake hopper, etc. The bearing and motor reducer connected to the power transmission in connection with 111) shall ensure durability and lifespan for continuous operation. In addition, the body frame 12 of the sludge injector 1 should be designed to a thickness having a sufficient safety factor against air and sludge driving loads. The exposed parts connected to the outside of the rotating shaft and the bearing housing, etc. preferably have a sealing structure in which air tightness can be maintained.

The air transfer device 2 according to the present invention connected to the lower part of the sludge injector 1 is connected to the air blower 21 at an upstream end of the sludge injector connection position, and the diameter thereof gradually decreases downstream thereof. The first air inlet 222 for supplying air to the space between the concentric pneumatic reduction tube 221 and the air flow rate amplifier housing 223 and the air flow amplifier housing 223 and the gas reduction tube 221. An air flow rate amplifier 22 is included.

FIG. 3 shows one specific example of the air flow amplifier 22, which is addressed to the air transfer apparatus 2, and the air flow amplifier housing 223 and the short-circuit reducing tube 221 therein are downstream. It is concentric in diameter and has a first air inlet 222 for supplying additional air.

Sludge particles and air introduced into the air feeder 2 from the bottom of the rotary wheel 11 of the sludge injector 1 are transported by the air flow supplied from the air blower 21 at the upstream end thereof, The cross sectional area of the air and sludge particles is reduced by the concentric type of shrinkage tube 221 installed in the amplifier 22 to increase the flow rate thereof, and the diameter of the air flow amplifier housing 223 is also reduced to maintain the increased flow rate. Let's do it. That is, the fluid flowing from the left arrow direction (upstream side) of FIG. 3 increases the flow velocity while passing through the short-shrink reduction tube 221.

In addition, the air transfer device 2 preferably further includes a first air inlet 222 that can supply an auxiliary air amount to the annular space between the housing 223 of the air flow amplifier and the shortening tube 221. Do. The first air inlet 222 is preferably located at a distance equal to or greater than the inner diameter of the inlet from the outlet (right direction in FIG. 3) of the air flow amplifier 22. Due to the air supplied from the first air inlet 222, the flow rates of the air and the sludge particles discharged from the shortening tube 221 are further amplified. The sludge passing through the air flow amplifier 22 according to the present invention is preferably accelerated and introduced into the cyclone dryer at a speed of 135 to 355 m / sec. That is, when high-speed air is delivered to the sludge, it becomes an aerosol in which solid particles and water particles simultaneously exist in the gas, and in this state, high-speed amplification by passing through the air transfer device 2 including the air flow amplifier 22 And transferred to a cyclone dryer. In addition, the microorganisms contained in the sludge can be removed up to about 90% by breaking the cell membrane by the high-speed movement of the air.

The air transport device 2 and the air flow amplifier 22 have a schedule thickness having sufficient durability with respect to the air load and air flow rate supplied from the air blower 21, and the inner diameter surfaces of the tubes have frictional resistance. It is desirable to maintain a smooth state to reduce. In order to maintain the durability, to reduce frictional resistance, and to prevent erosion, the interior of the air transfer device 2 is preferably coated with an epoxy coating or a high-strength lining. Cement linings are not preferred for application due to frictional resistance, but may be used in high volume processing. If the pipe is lost or eroded by friction, the air flow rate is lowered, so the capacity of the air blower 21 should be selected in consideration of this.

Figure 4a is an embodiment of the cyclone dryer according to the present invention, is connected to the first air transfer pipe (2), a plurality of vertical bars 31 are spoken on the upper surface, the throttle inlet 33 of the bottom of the cyclone chamber (35) And a cyclone dryer 3 provided with an inner diameter pipe 32 at the center of the cyclone chamber. It is preferable that the said cyclone dryer 3 is 2-5 stages.

The upper part of the cyclone dryer 3 is cylindrical and the lower part is conical, and the air flow therein represents "vortex flow". In addition, the inlet of the cyclone dryer 3 is installed in a direction tangential to the outer diameter of the upper portion of the cyclone dryer so that the introduced sludge particles flow into the swirl flow. As used herein, the term "vortex flow" refers to a flow of fluid descending while the fluid rotates in a spiral shape on the inner wall of the cyclone dryer, and "reverse vortex flow" refers to a spiral flow by air introduced from the outside. It refers to the flow of fluid while rising.

Figure 4b shows a cross section of one embodiment of the cyclone dryer according to the present invention, in which there is an inlet connected to the air transfer device 2, vertical bars 31 connected to the upper surface of the cyclone dryer chamber 35 It is arranged along the inner wall of the cyclone chamber. The sludge particles and the air introduced from the air transfer device 2 hit the plurality of vertical bars 31 connected to the upper surface of the cyclone dryer 3 to form small turbulent flows. These sludge particles reach the lower cone portion more actively due to the centrifugal force, and the size thereof becomes smaller, and the moisture content of the air separated by the frictional heat generated by the high-speed movement and collision of the sludge particles dries up, thereby gradually decreasing the water content.

Sludge particles that are descending while forming turbulent flow as described above are transferred upward through an inner diameter tube 32 installed at the center of the cyclone chamber while performing reverse vortex flow from the bottom to the reverse cone shape of the throttle inlet 33, The transfer pipe 36 connected to the step cyclone dryer moves to the second step cyclone dryer. Sludge particles are continuously dried through a multistage cyclone dryer, whereby drying efficiency can be maximized.

The cyclone dryer 3 preferably further includes a second air inlet 34 which is located on the side of the throttle inlet 33 and can further supply air. Sludge particles between the inner tube and the cyclone chamber shell are injected into the reverse vortex flow by the air flowing in the tangential direction from the side of the lower chamber cross-section through the second air inlet 34. For the water content of the target sludge, the residence time of the sludge particles in the cyclone dryer can be adjusted by adjusting the air inflow rate with the control valve of the second air inlet 34. The residence time should be determined based on the condition of the material to be treated and the required treatment capacity and water content per hour.

The air supply header 23 according to the present invention is an apparatus for supplying air to the first air inlet 222 and the second air inlet 34 by receiving air from the blower 21. As shown in FIG. 1A or 1B, one side of the air supply header 23 is provided with one air pipe connected to the discharge port of the air blower 21, and the other side is supplied with air. Consists of a union to supply air to the first air inlet 222 of the air flow amplifier, the second air inlet 34 of the first, second, third stage cyclone dryer. Using the air supply header 23 has the advantage of uniformly distributing air to each air inlet.

The water content of the sludge particles passed through the cyclone dryer of each step should be lower than the inlet sludge water content of the previous step, which is preferably reduced to 1/3 to 1/5.

Figure 5a shows one embodiment of a cyclone separator 4 according to the invention, which is connected to a conveying pipe 36 which is routed to the cyclone dryer 3 of the last stage, and at the top of which air is discharged. The cyclone separator 4, which includes the device 41, is provided with an automatic discharge device 5 through which dry solids are discharged.

The upper part of the cyclone separator 4 is cylindrical and the lower part is conical, and the air flow therein represents the vortex flow. In addition, the inlet of the cyclone separator 4 is located at the top, it is installed in a direction tangential to the outer diameter of the upper portion of the cyclone dryer so that the mixture of sludge particles and air flows into the swirl flow.

The mixture of sludge particles and air flows in a tangential direction to form a vortex flow, descending by descending the space of the cyclone chamber shell, in which solids and air are separated. The descending solids are deposited at the bottom center of the cyclone separator 4 by the cyclone shape. In order to discharge clean air to the air discharge device 41 of the cyclone separator 4, it is preferably connected to a deodorizer and a pipe. As the deodorizer, a microorganism deodorizer or a wet scrubber may be used.

The cyclone separator 4 preferably further includes a microwave generator 43 capable of further reducing the moisture content of the solids therein and sterilizing pathogenic bacteria. If the moisture content of the solid collected at the bottom of the cyclone separator 4 reaches the target value, the water is discharged as it is, but if a lower moisture content is required, the microwave generator 43 may be further included to perform additional drying.

5A and 5B include a pair of microwave generators 43 as one embodiment of a cyclone separator according to the present invention. The microwave generator 43 uses a magnetron 433 which is a source of microwave generation, and when the power is supplied, the magnetron 433 is sealed through a waveguide 431 installed on the side of the cyclone separator chamber 44. 44) It emits electromagnetic waves and penetrates not only the outer surface of the target material but also the internal particles to dry the moisture layer. In addition, since the microwave destroys the microorganisms, the microorganisms contained in the sludge may be 100% sterilized using the microwave generator 43. That is, the insufficient sterilization rate due to the high-speed movement of the air can be completely compensated.

That is, the sludge particles introduced into the upper portion of the cyclone separator 4 gradually descends and descends along the shape of the chamber due to the decrease in the air velocity, and the sludge particles are uniformly charged by the electromagnetic waves emitted from the waveguide and collide with each other. It is a phenomenon of dielectric heating. In the present invention, the power supply for the magnetron is preferably to use a low output of 1500 W or less, and in order to protect the oscillator, an air-cooled cooling isolator 432 is installed on the side of the waveguide so that the reflected wave is absorbed. In addition, when additional external power is added, the moisture content of the solids can be further reduced by 5% or more even with a short residence time.

FIG. 6 illustrates one embodiment of an automatic discharge device 5 connected to a cyclone separator 4 to discharge solids collected at the bottom of the cyclone separator chamber 44. The automatic discharge device (5) is composed of a lower chamber 53, a packing pack 54, a base 55 and a load shell 56 including a shut-off valve 51, they are a single automatic discharge device Is installed.

The lower chamber 53 includes a shutoff valve 51 and an electric actuator 52. Since the microwave by the microwave generator is essential for its characteristics, a shutoff valve 51 is installed between the bottom surface of the cyclone separator 4 and the lower chamber 53 for this purpose, and the electric actuator 52 for the operation thereof. ) Is installed. The shutoff valve 51 has a disk having a circular cross section and uses an eccentric disk to facilitate discharge, and is preferably made of a durable material that can withstand weight when solids are stacked. In one embodiment of the shut-off valve 51, the disk is connected to the valve shaft and the lock pin is provided on the outside of the valve body for the reducer and the electric actuator for the 90 ° open-close operation.

A packing pack 54, which is one packing unit, is installed outside the lower chamber 53, and a shutoff valve 51 is configured by sensing a weight of the solids collected in the packing base and the base 55 for weighing at a lower end thereof. A load shell 56 is provided which transmits a signal to the.

Figure 7 is one embodiment of the automatic discharge device 5 according to the present invention, as shown in the pre-set operating timer is turned off and the shutoff valve 51 is opened by the operation of the electric actuator 52, the solid material is When the magnetron 433 is lowered and the packing unit weight set by the load shell 56 installed under the packing base 55 is sensed, the electric actuator is turned off to close the shutoff valve 51 and the lowered solid is the packing unit. Packed in one pack, the magnetron 433 is turned on to dry the solids in the cyclone separator. In addition, by using the storage hopper as another embodiment of the automatic discharge device, it can be continuously discharged without the rod shell and the packaging base to be transferred to the hopper by the inclined screw conveyor or air conveyor.

The sludge drying apparatus as described above may be manufactured into a dry sludge having a water content of 20% or less by treating dewatered sludge having a water content of 80% or less. In addition, the components of the sludge drying apparatus and the connecting portion thereof are all formed in a sealed structure so that odor gas does not flow out. Meanwhile, according to the sludge drying method of the present invention, the supplied sludge is supplied to the sludge injector 1. By making it pass through, it is finely divided into sludge particles. The sludge introduced into the sludge injector 1 flows into the space between the paddle 112 and the shoe 113 and is pulverized, and is then micronized to a predetermined size by passing through the mesh screen net 13 installed under the sludge injector 1. . In the second step, the sludge particles that have passed through the sludge injector 1 and are moved to the air feeder 2 are moved together with the air supplied from the air blower 21 to reduce the slippage in the air flow amplifier 22. The moving speed is increased by passing through the pipe 221 and flows into the cyclone dryer 3. In the third step, the first air inlet 222 is provided at the air supply header 23 which receives air from the air blower 21. ) And the second air inlet 34 to supply air. The air supplied from the air supply header 23 to the first air inlet 222 amplifies the flow rates of the air and the sludge particles discharged from the shortening tube 221. In addition, the air supplied from the air supply header 23 to the second air inlet 34 sprays the sludge particles between the inner diameter pipe 32 and the cyclone chamber 35 in the cyclone dryer 3 to the upper portion of the inner diameter pipe. In the fourth step, the sludge particles introduced into the cyclone dryer 3 from the air transfer device 2 are rotated and dried while forming turbulence by a plurality of vertical bars 31 connected to the upper surface. In addition, the dried sludge particles are transported to the upper transfer pipe 36 through the inner diameter pipe 32 in the reverse vortex flow by the air supplied from the second air inlet 34 and the throttle inlet 33 and dried. In the present invention, the sludge particles are passed through a multi-stage cyclone dryer 3 so as to repeat this process. In the fifth step, sludge flowing into the cyclone separator 4 from the transfer pipe 36 is increased. Particles pivot down the cyclone separator chamber 44 to separate from the air. The separated air is discharged to the air discharge device 41, and the dried sludge solids are collected at the bottom of the cyclone separator chamber 44. In the sixth step, the sludge solids collected at the bottom of the cyclone separator chamber 44 is It is transferred to the automatic discharge device 5, processed and discharged.

The present invention is composed of a sludge injector, a first air transfer pipe including an air flow amplifier, a multi-stage cyclone dryer, a cyclone separator, and a discharge device, so that sludge can be dried without a heat source by high-speed movement of particles and collision between particles. It has the effect of providing the sludge drying apparatus and method which have the effect of sterilization.

Simple modifications and variations of the present invention can be readily used by those skilled in the art, and all such variations or modifications can be considered to be included within the scope of the present invention.

Figure 1a is a schematic diagram of a sludge drying apparatus of the present invention.

1B is an overall process diagram of the sludge drying apparatus of the present invention.

2A is a front view of a sludge injector according to the present invention.

2B is a longitudinal sectional view of the sludge injector according to the present invention.

2c is an enlarged view of a sludge injector according to the present invention.

3 is a longitudinal sectional view of an air flow amplifier according to the present invention.

4A is a longitudinal cross-sectional view of a cyclone dryer according to the present invention.

Figure 4b is a cross-sectional view of the cyclone dryer according to the present invention.

5A is a longitudinal cross-sectional view of a cyclone separator in accordance with the present invention.

5B is a cross sectional view of a cyclone separator in accordance with the present invention.

6 is a longitudinal sectional view of the ejector according to the invention.

7 is a process for automatic control of the discharge device according to the invention.

<Brief description of the major symbols in the drawings>

1: sludge injector 2: air feeder

3: cyclone dryer 4: cyclone separator

5: automatic ejection device 6: container

11: rotating wheel 13: mesh screen

12: main body frame 21: air blower

22: air flow amplifier 23: air supply header

31: Vertical Bar 32: Inner Tube

33: throttle inlet 34: second air inlet

35: cyclone dryer chamber 36: transfer pipe

41: air exhaust device 43: microwave generator

44: cyclone separator chamber 51: shutoff valve

52: electric actuator 53: lower chamber

54: packing pack 55: packing base

56: rod shell 111: axis of rotation

112: paddle 113: Shu

121: frame cover 122: fastening bolt

221: plunger tube 222: first air inlet

223: air flow amplifier housing 431: waveguide

432: isolator 433: magnetron

Claims (6)

A sludge injector 1 for atomizing and supplying sludge by rotating the rotary wheel 11 in the body frame 12; It is connected to the lower portion of the sludge injector 1, the air blower 21 is spoken at the upstream end around the sludge injector connection position, and the concentric type of deflation tube 221 gradually decreases in diameter downstream thereof. The air flow amplifier 22 includes an air flow amplifier housing 223 and a first air inlet 222 capable of supplying air to the space between the air flow amplifier housing 223 and the shortening tube 221. Air transfer device 2; It is connected to the air transfer device 2, a plurality of vertical bars 31 are spoken on the upper surface, the reverse conical throttle inlet 33 of the bottom of the cyclone chamber, the inner diameter tube 32 and the throttle inlet 33 in the center of the cyclone chamber A multi-stage cyclone dryer (3) including a second air inlet (34) capable of supplying air at a side of the side; An air supply header 23 receiving air from the air blower 21 to supply air to the first air inlet 222 and the second air inlet 34; The cyclone separator is connected to the transfer pipe 36 connected to the cyclone dryer (3), the air discharge device 41 is discharged to the upper portion of the cyclone dryer (3), the sludge solids are collected at the bottom of the cyclone chamber (44) (4); And Sludge drying apparatus, characterized in that the automatic discharge device (5) is connected to the lower portion of the cyclone separator (4) to discharge the dry solids. The sludge drying apparatus according to claim 1, wherein the sludge injector (1) is provided with a mesh screen net (13) at a lower sludge outlet. 2. The sludge drying apparatus according to claim 1, wherein the multistage cyclone dryer (3) is 2 to 5 stages. The sludge drying apparatus according to claim 1, wherein the cyclone separator (4) further includes a microwave generator (43) capable of applying a microwave to the sludge particles therein to reduce the water content and completely remove microorganisms. . delete A first step of micronizing into sludge particles by passing the supplied sludge through the sludge injector 1; The sludge particles that have passed through the sludge injector 1 and are moved to the air feeder 2 are moved together with the air supplied from the air blower 21, so that the slack reduction pipe 221 in the air flow amplifier 22 is provided. A second step of increasing the moving speed by passing through the cyclone dryer 3; A third step of supplying air from the air supply header 23 received air from the air blower 21 to the first air inlet 222 and the second air inlet 34;  The sludge particles flowing into the cyclone dryer 3 from the air transport device 2 are dried while forming turbulent flow by a plurality of vertical bars 31 connected to the upper surface, and the dried sludge particles are second air inlets ( A fourth step of repeating a process of being dried by being transferred to the upper transfer pipe 36 through the inner diameter pipe 32 by the reverse vortex flow by the air supplied from 34 and the throttle inlet 33; Sludge particles flowing into the cyclone separator 4 from the transfer pipe 36 are pivoted down the cyclone separator chamber 44 to be separated from the air, and the separated air is discharged to the air discharge device 41 and dried. The sludge solids are collected at the bottom of the cyclone separator chamber 44; And A sixth step in which the sludge solid collected at the bottom of the cyclone separator chamber 44 is transferred to the automatic discharge device 5, processed and discharged; Sludge drying method, characterized in that consisting of.