KR100928277B1 - An apparatus and method for rapid drying sludge - Google Patents

Abstract

PURPOSE: A quick dry device for processing a large amount of sludge and a method therefor are provided to process the sludge environmentally-friendly, and to dry and process the sludge rapidly. CONSTITUTION: A sludge quick dry device(10) comprises a frame, a chamber(20), a plurality of screw(40), a magnetron(70) and a heating lamp(80). The sludge quick dry device further includes a control part(110). The chamber is supported by the frame, and has an inner space. An inflow hopper is formed on an end of the chamber. A multi-shaft screw(40a,40b,40c,40d) is divided by the plate for flatting the sludge.

Description

Rapid drying apparatus for treating a large amount of sludge and a method of rapid drying sludge by the apparatus {An apparatus and method for rapid drying sludge}

The present invention relates to a rapid drying apparatus for treating a large amount of sludge and a method for rapidly drying sludge by the apparatus, and more particularly, by drying a large amount of sludge in a short time in various industrial sites, homes, houses, etc. The present invention relates to a rapid drying apparatus for treating a large amount of sludge and a method for rapidly drying sludge by the apparatus.

Recently, the interest in the treatment of water-containing waste (hereinafter referred to as sludge) among various wastes generated in various fields is increasing. Such sludges include sewage sludge from sewage water treatment facilities, humid waste generated from industrial sites such as food or paper mills, food waste generated from homes, and livestock manure from livestock farms. Since such sludge typically contains up to 80% of water, it is excluded from the general treatment of incineration plants, and treatment through landfill is common. However, the treatment of sludge through landfill has caused problems due to secondary pollution such as groundwater due to leachate, weakening of the ground, and securing landfill area. Therefore, an alternative technology is required.

Therefore, a number of technologies for sludge treatment have been developed and patented as a way to solve the above problems, such a patented technology "multi-stage screw dryer" of the Republic of Korea Patent Publication No. 2002-0005917 A plurality of installed drying cylinders are arranged side by side adjacent to each other, and the drying object injected into the uppermost drying cylinder is continuously transferred from top to bottom and discharged through the lowermost drying cylinder, and injected into the lowermost drying cylinder. It is proposed a sludge drying apparatus exhausted through the top drying cylinder so that hot air is continuously transferred from the bottom to the top.

And the Republic of Korea Patent Publication No. 10-0407828 "moisture drying method using infrared and high frequency" is installed in the drying container rotatable conveyor belt, and installed a magnet on the upper side of the conveyor belt in the sludge or food waste Remove the metallic foreign matter contained in the inside of the conveyor belt to install the positive and negative plates of the high-frequency device to the high temperature heat to the sludge or food waste, and ventilator to discharge the steam generated by heating drying vessel And a sludge drying method in which an infrared drying furnace is installed to irradiate sludge or food waste through infrared radiation at the outlet side.

In addition, the Republic of Korea Patent Publication No. 2003-0079397 "Food Waste and Shaft Drying Device" has a plurality of spaces in the shape of a tape wound, the rotary blades with a projection jaw for rotating the food waste to the space, and the second fixed A sludge drying apparatus comprising a heater plate fixed to the frame and having respective holes formed at the center and one side thereof, and a heater device fixed to the first fixed frame and supporting a near infrared lamp that radiates radiant heat is proposed.

As described above, the proposed techniques for treating sludge in a conventional drying method suggest an apparatus and method for carrying out a drying process using various types of heat sources while transferring sludge using a conveyor belt or a screw.

However, such a prior art has a low thermal efficiency, high cost for drying the sludge, takes a lot of time compared to the incineration treatment method, and has insufficient measures for dust or noise generated during the treatment of the sludge. For example, "Multistage Screw Dryer" of Korean Unexamined Patent Publication No. 2002-0005917 is composed of a screw in multiple stages, and drying the sludge using hot air (or heating by induction and waste heat of the incinerator as a heat source). Although the technique is proposed, such a method takes a lot of time to dry the sludge containing less than 60% moisture, there is a problem that the treatment efficiency is low and the maintenance cost is high because the thermal efficiency is not high. In addition, "Food Waste and Shaft Drying Device" of Korean Patent Laid-Open Publication No. 2003-0079397 provides sludge to be transferred from the upper layer to the lower layer by installing rotary vanes in a processing apparatus of a laminated structure, and radiant heat and Sludge drying technology is proposed by the heat of reflection, but this method is complicated in the configuration of the apparatus, the sludge should be crushed separately, and the sludge is dried in a stacked state, so the throughput of the sludge is limited, as in the aforementioned apparatus. There is a problem of low processing efficiency and high maintenance cost. In addition, the Republic of Korea Patent Publication No. 10-0407828 "moisture drying method using infrared and high frequency" is intended to be dried by using a high frequency while conveying using a conveyor belt, irradiated with infrared radiation from the exit side, such sludge In the drying apparatus and method, as described above, the sludge is separately crushed and rolled in a state in which the sludge is stacked, so that the throughput of the sludge is limited, and thus, the treatment efficiency is low and the maintenance cost is high.

As described above, the conventional sludge drying method and apparatus have low thermal efficiency, low practicality, and in particular, when the screw method is applied, the sludge is almost impossible to transfer, and the sludge which is positioned inside is almost never dried. In other words, the sludge drying apparatus using the screw method is expected to transfer the sludge through the screw while conveying the sludge, but the expectation of substantially the grinding action is not expected, and the surface of the sludge to be transferred is dried but the sludge inside is not dried. After all, there is a problem that the screw is overloaded.

In order to solve the above problems, the present inventors have a frame 12 as shown in FIGS. 1 to 3 and an inner space supported by the frame 12 to communicate in a horizontal direction, and includes a front end portion. An inflow hopper 60 is provided for supplying sludge to be dried, and chambers 20, 20 'and 20 "are provided with an outlet hopper 62 for discharging the dried sludge at a rear end thereof, and both ends of the chamber. Rotatably supported, and the pitch of the rotary blades 44 are arranged in succession in parallel to each other, and the sludge supplied to the inlet hopper 60 is directed along the rotary blade 44 toward the outlet hopper 62. A plurality of screws 40, 40 ′, 40 ″, which are horizontally installed into the inner spaces of the chambers 20, 20 ′, 20 ″ and rotated by a drive unit 50 installed outside the chamber so as to be transferred to the chamber 20, 20 ′, 20 ″, 40b, 40c, 40d), and micro-arranged on top of the chamber A plurality of magnetrons 70 arranged successively in the horizontal direction of the chamber so that the wave acts as an internal space in which the screws are installed, and arranged in an upper portion of the chamber so that near-infrared rays act in the screw direction. The sludge drying apparatus 10 including a plurality of near-infrared lamps 80 is disposed and has been patented as Republic of Korea Patent Publication No. 10-0539413, but the sludge drying apparatus developed by the present invention as described above is a multi-shaft shaft The number of installation of the screws 40a, 40b, 40c, and 40d is limited, and the multi-shaft shaft 42 and the multiaxial shaft 42 as shown in FIG. 4A for mass processing of highly viscous sludge using such a conventional sludge drying apparatus. To increase the number of installations of the screws 40a, 40b, 40c, 40d, 40e, 40f, 40g, 40h, and then to bulk the sludge with high viscosity In this case, as shown in FIG. 4B, sludges having high viscosity are agglomerated with each other, and a phenomenon in which the sludge is biased in one direction occurs, and the sludge is not crushed, agitated, and transported by the sludge. In the method of increasing the number of multi-axis shafts 42 in the conventional sludge drying apparatus, as a problem occurs that the thermal efficiency is partially reduced as the near-infrared radiation emitted from the microwave and the near-infrared AMP 80 is prevented from being irradiated to the sludge. There was a limitation in the rapid treatment of highly viscous sludge.

Therefore, the present invention has been proposed as a way to improve the above problems, the present inventors continuously in the direction in which the sludge is transported in the chamber of the sludge drying apparatus has already been patented in Korea Patent No. 10-0539413 In order to maximize the thermal efficiency of near-infrared or infrared light emitted from a heating lamp such as microwaves and near-infrared lamps or infrared lamps emitted from the installed magnetron, the physical properties such as chemical resistance (acid resistance, alkali resistance) and heat resistance are excellent on the upper surface of the chamber. By installing a reflector plate made of polished metal material, microwaves and near-infrared or infrared rays are irradiated directly by the sludge as well as by the reflector plate so that the thermal efficiency is maximized. Sludge caused by rapid To provide a crude method in challenge.

In addition, the present invention is wrapped around the chamber using a glass wool insulating material to prevent the loss of heat generated by near infrared rays or infrared rays and microwaves to maximize the drying of a large amount of sludge, characterized in that Another object is to provide a rapid drying apparatus for treating sludge and a method for rapidly drying sludge by the apparatus.

In addition, the present invention, when the sludge is highly viscous flow into the chamber and the sludge is transferred from one side to the other by the pitch of the screw rotary blade at the same time pulverization and agitation, multi-axis so that the sludge is driven in one direction does not occur By installing the sludge deflection plate between the screws, it is easy to crush, stir and transport the sludge in the chamber, so that the emission of microwaves and the irradiation of near infrared or infrared rays are not disturbed to further increase thermal efficiency. Another object of the present invention is to provide a rapid drying apparatus for treating a large amount of sludge and a method for rapidly drying sludge by the apparatus.

In addition, in the case of the sludge drying apparatus patented by the inventor of the patent No. 10-0539413, a lot of energy is consumed by supplying hot air into the sub-cavity formed in the lower chamber to increase the drying efficiency of the sludge. By dehumidifying only the high temperature exhaust gas generated inside the chamber and supplying it back to the chamber for recycling, less energy is consumed and less exhaust gas is discharged to the outside of the apparatus for environmentally-friendly treatment of large sludges. Another object is to provide a rapid drying apparatus and a method for rapidly drying sludge by the apparatus.

The present invention for achieving the above object and the frame. A chamber having an internal space supported in the frame and communicating horizontally, an inflow hopper for introducing sludge into the front end portion, and an outflow hopper for discharging dried sludge in the rear end portion; A sludge drying apparatus comprising a plurality of multiaxial screws rotatably supported at both ends, and comprising a plurality of magnetrons and a plurality of heating lamps disposed successively in the horizontal direction of the chamber.

The chamber prevents sludge biasing to form a plurality of sludge transport spaces by forming an interface in a space between one screw of a plurality of screws provided in the inner space for transporting sludge and the other screw of the adjacent plurality of screws. Plate is installed,

And the upper surface of the inside of the chamber is provided with a reflector for reflecting in the axial direction of the multi-axial screw near the infrared or infrared radiation emitted from the plurality of magnetrons in the reverse direction and the plurality of heating lamps in the reverse direction,

In addition, the chamber has a rapid drying device for treating a large amount of sludge, characterized in that the thermal efficiency is improved by attaching a heat insulating material on the outer surface of the wall forming the inner space as a problem solving means.

In the present invention, the sludge (functional sludge) to be dried is introduced into the chamber through an inflow hopper, pulverized and agitated with a plurality of screws, and then transported and dried by heating with microwaves, near infrared rays or infrared rays, and then the outside through the outflow hopper. In the sludge drying method, characterized in that for discharging the dry sludge,

The sludge is supplied to one end of the chamber and installed in a space between one side screw of a plurality of screws that are arranged in parallel and rotated so that the pitches of the rotary blades alternate with each other during the drying process, and are disposed in a space between the other screws of the plurality of adjacent screws. Sludge is prevented from slanting in one direction by the sludge anti-skid plate and is transferred to the other end by the rotary blade of the screw,

Near-infrared rays irradiated by actuating heating lamps disposed continuously between the magnetrons and the microwaves emitted by the operation of the microwave generator in the magnetrons installed continuously at a predetermined interval in the sludge feed direction, and acting in the screw direction. The infrared rays act in the direction of the screw, and the microwaves and near infrared rays or infrared rays emitted in the reverse direction are reflected in the axial direction of the multi-axial screw using a reflector, and the sludge is rapidly heated while being crushed, stirred and transported into the plurality of screws. A rapid drying method for treating a large amount of sludge, characterized by drying, is another problem solving means.

The present invention by the above-mentioned means for solving the problem is a structure in which a heating lamp such as a magnetron and a near infrared lamp or an infrared lamp is continuously installed in a direction in which sludge is transferred by a rotary blade of a multi-axial screw in a chamber, and has properties such as chemical resistance and heat resistance. By installing a reflector on the upper surface inside the chamber using this excellent, glossy metal material, near-infrared or infrared rays irradiated from a heating lamp such as microwaves and near-infrared lamps or infrared lamps emitted from the magnetron are directly irradiated to the sludge. At the same time, microwave and near-infrared or infrared rays reflected by the reflector can be irradiated to the sludge to increase the drying efficiency, and it is possible to rapidly dry a large amount of sludge by covering the glass wool insulation material around the chamber to prevent heat loss. Can also be multiaxial By installing the sludge deflection prevention plate between flows, even when highly viscous sludge flows into the chamber, there is no deflection phenomenon in which the sludge is driven in one direction, so that microwave emission and near-infrared or infrared irradiation are not disturbed. It is an advantage that a large amount of sludge can be rapidly dried by increasing the drying treatment efficiency of the sludge as much as possible.

According to a feature of the present invention for achieving the above-described effect, the present invention has already been patented by the Patent No. 10-0539413. A chamber having an inner space supported by the frame and communicating horizontally, an inflow hopper for introducing sludge into the front end portion, an outflow hopper for discharging dried sludge in the rear end portion, and both ends of the chamber A sludge drying apparatus including a plurality of multi-axial screws that are rotatably supported in the chamber, and including a plurality of magnetrons and a plurality of near-infrared lamps disposed successively in the horizontal direction of the chamber, is shown in FIG. 4A. When a large amount of viscous sludge flows into the chamber, the highly viscous sludge is pulverized and agitated by a plurality of multiaxial screws, and the sludge agglomerates by the viscosity of the sludge as shown in FIG. 4B. Direction biased and diverges from multiple magnetrons In the sludge rapid treatment apparatus according to the present invention, in the sludge rapid treatment apparatus according to the present invention, the chamber is composed of a plurality of screws provided in an internal space for transporting sludge. By installing a sludge anti-skid plate that forms a boundary surface in the space between one screw and the other screw of a plurality of adjacent screws so that a plurality of sludge conveying spaces are formed, a large amount of viscous sludge flows into the chamber and the screw rotary blade When the sludge is transferred from one side to the other by the pitch of pulverization and stirring at the same time, the sludge is prevented from being biased by the sludge anti-blocking plate even if the sludge is gathered by viscous and driven in one direction of the screw. muscle Of ultraviolet or infrared radiation can increase the thermal efficiency as much as possible not to be disturbed.

According to another feature of the present invention, in the sludge rapid drying apparatus according to the present invention, the upper surface of the inside of the chamber is a multi-screw of near-infrared or infrared radiation irradiated in a reverse direction from a plurality of heating lamps and microwaves emitted in a reverse direction from a plurality of magnetrons. By installing a reflecting plate made of a glossy metal material having excellent physical properties such as chemical resistance and heat resistance for reflecting in the axial direction, microwaves, near infrared rays or infrared rays can be irradiated directly with the sludge as well as by a reflecting plate to maximize thermal efficiency.

The heat lamp usable in the present invention is preferably a heat lamp such as a near infrared lamp or an infrared lamp.

In addition, according to another feature of the present invention, the sludge rapid drying apparatus according to the present invention can prevent the loss of heat generated by near-infrared rays or infrared rays and microwaves by wrapping the surroundings of the chamber using a glass wool insulation. .

The sludge rapid drying apparatus according to the present invention dehumidifies the high-temperature exhaust gas generated when the sludge is dried in the inner space of the chamber in which the screw is installed, and then reflows it into the chamber inner space to heat the inner space. Act as an auxiliary heat source to act as an auxiliary heat source for heating the internal space.

In the sludge rapid drying apparatus according to the present invention, the chamber includes a partition plate having a gap formed at regular intervals, wherein the partition plate protrudes into the inner space so as not to interfere with the screw between the screw and the screw. It has a face convex.

In addition, the sludge rapid treatment apparatus according to the present invention is to provide a partition plate to form a boundary surface in the space between the screw of one side of the plurality of screws provided in the inner space for transporting the sludge and the other screw of the plurality of adjacent screws By installing the sludge anti-skid plate, the sludge conveyance space is divided into a plurality of sludge to prevent the sludge biased phenomenon.

In the sludge rapid drying apparatus according to the present invention, the screw has a front portion of the position close to the inlet hopper and a rear portion of the position close to the outlet hopper and an intermediate portion between the front portion and the rear portion, In the middle part, the first mixing plate protruding in one direction horizontally with the pitch direction of the screw is successively installed, and the rear part has the second mixing plate protruding in both directions horizontally with the pitch direction of the screw. It can be installed successively with a gap.

In the sludge rapid drying apparatus according to the present invention, the heating lamps are disposed between the magnetrons so as not to interfere with the magnetrons, and the heating lamps are irradiated downwardly by infrared rays or near infrared rays by using an infrared heating element. The heating element is formed by inserting the transparent quartz tube, and the upper outer circumferential surface of the quartz tube may be plated to allow near-infrared rays to be irradiated downward.

In the sludge rapid drying apparatus according to the present invention, the driving unit is installed to be positioned outside the chambers of each stage provided with the plurality of screws, and the plurality of screws may include a motor for transmitting a driving force outside the chambers of each stage. It is operated by the provided drive unit.

On the other hand, the reflective plate installed in the sludge rapid drying apparatus according to the present invention is a glossy metal material having excellent chemical resistance (acid resistance, alkali resistance) and heat resistance, specifically, stainless steel (SUS 316L, etc.), it is preferably equivalent to the above In the case of a glossy metallic material having the above properties, all of them are applicable.

In addition, the heat insulating material that can be used in the present invention is a material excellent in heat resistance, and specifically, glass wool is preferable, and in the case of a heat insulating material having physical properties equal to or higher than this, all are applicable. Although the thickness of the heat insulating material used in the present invention is preferably 50 mm, the thickness can be appropriately adjusted according to the needs of the consumer or the needs of the manufacturer.

Thus, the sludge rapid drying method according to the present invention by grinding and stirring the sludge to be dried as the sludge drying method in the sludge drying method of the present inventors 10-0539413 which has already been patented in Korea In the sludge drying method characterized in that the drying by heating by microwave and near-infrared or infrared while conveying, the sludge is supplied to one end of the chamber and the rotary blades are arranged in succession in parallel so that the pitches are staggered at the time of the drying treatment. The sludge is prevented from being biased in one direction by the sludge anti-biasing plate installed in the space between one side screw of the plurality of screws and the other screw of the adjacent plurality of screws so that the sludge is easily transferred to the other end by the rotary blade of the screw. Viscous sludge by Paper can be processed rapidly in large quantities.

And the sludge rapid treatment method according to the present invention by operating the magnetron continuously installed at a predetermined interval in the conveying direction of the sludge so that the microwave acts in the screw direction, a near-infrared lamp or infrared lamp disposed continuously between the magnetron By operating a heating lamp such as the near infrared or infrared ray to act in the screw direction, and the microwave and near infrared or infrared rays emitted in the reverse direction to reflect the axial direction of the multi-axial screw using a reflector and the sludge to the plurality of screws Grinding, stirring, conveying, rapid heating and drying, the magnetron is continuously installed in the sludge conveying direction, and a heating lamp is installed between the magnetrons. A near infrared or infrared light to remove the surface moisture during application of the microwave can be problematic because it is characterized in that to maximize the thermal efficiency.

In the present invention, the microwave (microwave) is generated using a special electron tube, Klystron, magnetron, major, etc., the transmission mainly uses a three-dimensional circuit, the electron trumpet, parabola antenna has a sharp directivity is emitted. Microwaves such as these have strong sterilizing power and are well absorbed by plants and water to generate heat. A typical device made using this property is a microwave oven. The present invention is applied to drying sludge using such microwaves. Therefore, in the present invention, only a microwave generator, a magnetron, a wave guide, etc. are mentioned as a configuration for the application of microwaves, but a technical configuration that generates microwaves and causes the microwaves to act on sludge may be applied to conventional techniques. .

And near infrared rays generate heat because they penetrate and enter the object, not only near other infrared rays and objects. And this heat has many effects on disinfection and sterilization. The present invention not only uses a heat source by near infrared rays using such near infrared rays, but also improves drying efficiency by preventing drying degradation that may occur when only microwaves are used as described below.

In addition, the present invention may use infrared rays in addition to the above-mentioned near infrared rays. Infrared rays have a longer wavelength than visible light, shorter wavelengths than microwaves used in microwave ovens, and act as electromagnetic waves that penetrate into objects and are characterized by thermal action.

Microwaves commonly used in microwave ovens and the like vibrate the internal water molecules of the object (sludge) so that the object is heated by the heat generated thereby. However, the water molecules vibrated by the microwaves are generated from the inside of the object and moved to the outside. In this process, the object is wrapped by moisture, and thus there is a problem that the drying efficiency is lowered. Therefore, the sludge rapid drying apparatus according to the present invention and the method for rapidly drying the sludge using the apparatus to remove the moisture surrounding the sludge particles as a target by installing a heating lamp continuously between the magnetron for the microwave to act on the sludge. By heating and by near-infrared or infrared heating to maximize the drying efficiency of the sludge.

5 is a view for explaining the technical idea of the sludge rapid drying apparatus and method according to the present invention.

Referring to FIG. 5, in the sludge rapid drying method according to the present invention, sludge (functional sludge) to be dried is introduced into the chamber 20 through an inflow hopper 60 to be pulverized and stirred with a plurality of screws 40. In the method of drying the sludge, characterized in that the dried sludge is discharged to the outside through the outgoing hopper 62 and dried by heating with microwaves and near infrared or infrared while transporting the sludge, one end of the chamber 20 Is installed in a space between one side screw of the plurality of screws 40 which are arranged in parallel and rotated in succession so that the pitches of the rotary blades 44 alternate with each other during the drying treatment. Sludge is not biased in one direction by the sludge anti-skid plate 112 and is rotated to the other end by the rotary blade 44 of the screw 40. It acts to transmit.

Then, the magnetron 70 continuously installed at a predetermined interval in the sludge conveying direction allows the microwaves emitted by the operation of the microwave generator 72 to act in the direction of the screw 40, and continuously between the magnetrons 70. By operating the heating lamp 80 disposed and installed so that the near infrared or infrared rays act in the direction of the screw, and the microwave and the near infrared or infrared rays emitted in the reverse direction by using the reflector plate 114 of the shaft of the multi-axis screw 40 It is reflected in the direction to maximize the thermal efficiency.

At this time, the pitch of the rotary blades 44 are arranged in succession in parallel to each other to be fed to one end of the plurality of or more of the screw 40 is rotated by rotating the screw 40, the sludge is the rotary blade 44 of the screw 40 To be transferred to the other end by Then, by operating the magnetron 70 continuously installed at a predetermined interval in the direction of transport of the sludge so that the microwaves act in the direction of the screw 40, and the heating lamp 80 is disposed continuously disposed between the magnetron 70 Near-infrared or infrared rays to act in the direction of the screw (40).

The sludge rapid drying method according to the present invention is heated by microwave and near-infrared or infrared while crushing, stirring and transporting the hydrous sludge with a plurality of screws 40 installed so that the pitch of the rotary blade 44 is staggered with each other. It is characterized by forming a dry sludge by advancing.

Therefore, under the above conditions, the sludge is pulverized, agitated and conveyed by the plurality of screws 40 or more, and rapidly heated to dry, thereby providing a magnetron 70 continuously in the sludge conveying direction, and the magnetron 70. Since the heating lamp 80 is installed between the heating mechanism of the microwave oven and the surface moisture which may be a problem when applying the microwave is characterized in that it can maximize the thermal efficiency because the infrared or infrared rays are removed.

In addition, in the present invention, in order to prevent heat loss as much as possible under the above conditions, the chamber was attached to the outer surface of the wall forming the inner space to improve the thermal efficiency.

5, the sludge rapid drying apparatus 10 according to the present invention includes a frame 12 (see FIG. 7), a chamber 20, a plurality of screws 40, a magnetron 70, and a heating lamp 80. It is provided with. As shown in FIG. 8, the frame 12 supports various components constituting the sludge drying apparatus 10 with a skeleton which is usually configured using various rods, panels, profiles, and the like. Therefore, such a frame 12 may be formed in various ways according to the configuration of the sludge drying apparatus 10. In addition, the control unit 110 is configured, and such a control unit 110 is to control various elements to perform the sludge drying process automatically or semi-automatically, electronic or pneumatic control may be applied, PLC Or overall control by computer will be possible.

In the present invention, the chamber 20 has an internal space 22 which is supported by the frame 12 and communicates in the horizontal direction, and an inflow hopper 60 is provided to which sludge to be dried is supplied to the front end portion. Outflow hopper 62 through which the dried sludge is discharged is installed. Such a chamber 20 is for forming a sealed space for proceeding the drying process of the sludge, it is usually configured by welding a stainless steel plate or fastening using a bolt and nut. Of course, such a structure of the chamber 20 may be configured as in the preferred embodiment of the present invention to be described later.

The present invention is characterized by applying a plurality of screws 40 or more. Of course, if the processing capacity is small, it may be configured by applying a single screw, but by placing a plurality of (40 or more) screws 40 in parallel so that the sludge is crushed and stirred together with the sludge transfer. The sludge is effectively transported between the two screws 40. Such a screw 40 is supported by the shaft 42 is rotatably coupled to both ends of the chamber (20). The plurality of screws 40a, 40b, 40c, 40d 40e, 40f, 40g, and 40h may include a plurality of screws 40e, adjacent to one side screw 40d of the plurality of screws 40a, 40b, 40c, and 40d. Sludge anti-gravity plate 112 is formed in the space between the other screw (40e) of the 40f, 40g, 40h) to form a plurality of sludge conveying space and installed in a plurality of sludge conveying space of one side It is divided into multi-axis screws 40a, 40b, 40c, 40d and multi-axis screws 40e, 40f, 40g, 40h installed in the sludge conveying space on the other side, and each rotary blade 44 of the multi-axial screw in the conveying space of each sludge. Are arranged in parallel so that the pitches of are staggered from each other. The screw 40 is horizontally installed into the inner space 22 of the chamber 20 and is rotated by the drive unit 50 installed outside the chamber 20.

As described above, the sludge drying apparatus 10 according to the present invention has a multi-screw screw (40a, 40b, 40c, 40d) installed in the sludge transport space of one side divided by the sludge anti-skid plate 112 and the sludge transport space of the other side Multi-axial screws 40e, 40f, 40g, 40h installed are screws 40a and 40b, 40b and 40c, 40c and 40d adjacent to each other so that the rotary blades 44 intersect in each sludge moving space. And the sludge supplied to the inflow hopper 60 is transferred along the rotary blade 44 in the direction of the outflow hopper 62 by being installed such that the rotary blades 44 of 40f, 40f and 40g, 40g and 40h are offset relative to each other. Allow the sludge to stir and grind as desired.

The magnetron 70 allows the microwaves generated by the microwave generator 72 to act in the screw direction. That is, the magnetron 70 is disposed above the chamber 20 so that microwaves can be arranged in a horizontal direction of the chamber 20 so as to act as an inner space 22 in which the screw 40 is installed. The heating lamp 80 is disposed above the chamber 20 so that the near infrared rays or the infrared rays act in the direction of the screw 40 so that the heating lamps 80 are disposed in the horizontal direction of the chamber 20.

At this time, the upper surface inside the chamber reflector plate 114 for reflecting the microwaves emitted in the reverse direction from the plurality of magnetrons 70 and the near infrared rays irradiated in the reverse direction from the plurality of heating lamps 80 in the axial direction of the multi-axis screw 40. ) So that microwaves, near-infrared or infrared rays are irradiated directly to the sludge as well as by the reflector plate so that the thermal efficiency can be maximized, and the chamber is formed outside the wall to form an internal space so that the heat inside the chamber is not lost. Insulating material 116 is attached to the surface to further improve the thermal efficiency.

Meanwhile, in the sludge rapid drying apparatus and method according to the present invention, the dehumidification exhaust gas supply unit 90 and the exhaust gas inlet path 92 may be additionally configured to maximize thermal efficiency. That is, the sludge rapid drying apparatus 10 according to the present invention is to proceed to a high temperature of about 600 ℃ during the drying process of the sludge, the high-temperature exhaust gas generated in this process is dehumidified and then introduced into the chamber 20 It can be used as an auxiliary heat source. A technical configuration that allows the exhaust gas to be re-introduced into the chamber 20 and used as an auxiliary heat source will be possible by the configuration of the preferred embodiment of the present invention described below. And the sludge rapid drying apparatus and method according to the present invention is provided with a dehumidifying exhaust gas supply unit 90 to supply the high-temperature exhaust gas from which moisture is removed to the interior space 22 of the chamber 20 to maximize the drying efficiency. Can be. The high temperature exhaust gas supplied to the inner space 22 of the chamber 20 is further associated with the above-mentioned microwave and near infrared or infrared rays to further increase the drying efficiency.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 6 to 12, and like reference numerals denote like elements for performing the same functions in FIGS. 6 to 12. Meanwhile, in the drawings, detailed descriptions of the technical contents of the general sludge drying apparatus are easily understood by those skilled in the art, and thus, they will be briefly omitted or omitted and shown based on the parts related to the present invention. In addition, the size and shape of the assembled portion or the connecting portion in the drawings of the drawings may be slightly different or the dimensional difference from the other drawings are merely urban differences and do not limit or change the technical spirit of the present invention.

Figure 6 is a cross-sectional view showing a cross section of the chamber of the sludge rapid drying apparatus according to a preferred embodiment of the present invention, Figure 7 is a side view of the sludge rapid drying apparatus shown in Figure 5, Figure 8 is a sludge rapid drying shown in FIG. 9A and 9B are views for explaining the configuration of the chamber in the sludge rapid drying apparatus according to a preferred embodiment of the present invention in detail, Figure 10 is a sludge rapid drying apparatus according to a preferred embodiment of the present invention Figure 11 is a view for explaining the installation form of the screw in detail, Figure 11 is a view for explaining the configuration of the screw installed in the upper chamber in the sludge rapid drying apparatus according to a preferred embodiment of the present invention in detail, Figure 12 is the present invention In the sludge rapid drying apparatus according to a preferred embodiment of the heating lamp in detail. At this time, Figures 6 to 8 are parts that need to show the parts related to the characteristic technical components of the sludge rapid drying apparatus according to the present embodiment in the direction of illustration of each figure is shown around them.

7 and 8, the sludge rapid drying apparatus 10 according to the preferred embodiment of the present invention is a frame 12 composed of multiple stages for treating sludge having a relatively high moisture content of up to 80%; Configured in three stages), chambers 20, 20 ', 20 "provided at each stage of the frame 12, screws 40, 40', 40" in each chamber 20; see FIG. A magnetron 70 and a heating lamp 80 are provided.

The frame 12 according to the present embodiment is configured to be able to adjust the horizontal degree to the ground, and to stably support various elements including the chambers 20, 20 ', 20 ". Although not shown, if the overall height of the sludge rapid drying apparatus 10 increases, it may increase convenience by adding a railing around the periphery for maintenance and management.

The sludge rapid drying apparatus 10 according to the present embodiment is configured to have three chambers 20 arranged in succession up and down. The sludge is supplied from the outside through an inflow hopper 60 installed at the left end of the upper chamber 20. At this time, the manner of supplying the sludge to the inlet hopper 60, although not shown, will be made through various types of conveyors or feeders. The three chambers 20, 20 ', 20 "are connected via intermediate hoppers 64, 66. The sludge is thus introduced into one end of the upper chamber 20 through the inlet hopper 60 and transported to the other end. After entering the one end of the intermediate chamber 20 'through the middle hopper 64, and then transferred to the other end again through the middle hopper 66 to the one end of the lower chamber 20 "through the intermediate hopper (66) Is discharged to the outside through). The sludge discharged to the outside through the outflow hopper 62 is accommodated in the storage container in a state where the drying process is completed.

Such chambers 20, 20 ', 20 "have a structure as shown in Figs. 6-9B. That is, referring to Figs. 6-9B, the chambers 20, 20', 20" are basically The sludge which is supported by the frame 12 and communicates in the horizontal direction is formed to have two inner spaces 22 which are spaces to be transported. At this time, each chamber (20, 20 ', 20 ") of the multi-axial screw in order to mass dry the highly viscous sludge, the number of screws (40a, 40b, 40c, 40d) than the screw (40e, 40f, 40g, Further increase the number of 40h, between one screw 40d of the plurality of screws 40a, 40b, 40c, 40d and the other screw 40e of the plurality of adjacent screws 40e, 40f, 40g, 40h. Two sludge conveying internal spaces are formed by the sludge anti-wrap plate 112 by forming a boundary surface in the space of the sludge and thus the sludge is deflected in one direction by the sludge anti-wage plate 112. It is possible to prevent the phenomenon.

Then, the dehumidification exhaust gas supply unit 90 in which the exhaust gas of about 180 ° C. to 200 ° C. generated when the sludge drying process is performed in the inner space 22 of the chamber is made of a blower, etc. Flows into the sludge transfer space and then flows to the outside of the chamber 20 "and passes through the sludge transfer space of the chamber 20 'of the intermediate stage and then flows out to the chamber 20 of the first stage. As a result, the sludge is dried while passing through the sludge conveying space. The exhaust gas, which has undergone such a circulation process, is dehumidified in a hydrolysis separator (not shown in the drawing), and then flows back into the interior of the chamber 20 "at the final stage, and is a heat source for drying the sludge as described above. To be used.

Rapid sludge drying apparatus 10 according to the present invention is a device that can be carried out environmentally friendly method because it can reduce the exhaust gas emissions to the outside by recycling the exhaust gas as a heat source by the above method.

In addition, in the sludge rapid drying apparatus 10 according to the present exemplary embodiment, the bottom surface convex portion 32 is installed on the partition plate 30, and the partition plate 30 having a gap 37 formed at regular intervals extends laterally. The side convex part 38 is installed in the upper part of the side surface, and the side convex part 38 is installed in both side walls. 9A and 9B, the bottom convex part 32 is formed to protrude into the inner space 22 through which sludge is transferred so as not to interfere with the screw between the screw and the screw, and the side convex part 38 is formed on both side walls. It is formed to protrude so as not to interfere with the screw inward. The bottom convex portion 32 and the side convex portion 38 are configured to smoothly transport the sludge. That is, the sludge conveyed by the rotary blade 44 of the screw 40 is smoothly transported without stagnation or blockage.

Each chamber 20, 20 ', 20 "of the sludge rapid drying apparatus 10 according to the present embodiment is a sludge conveying space in which four screws 40a, 40b, 40c, and 40d are installed on one side and four screws on the other side. It consists of two sludge conveying spaces in which sludge conveying spaces (40e, 40f, 40g, 40h) are installed, each screw (40a, 40b, 40c, 40d) of each sludge conveying space (40e, 40f, 40g, 40h) are coupled to the shaft 42 is rotatably supported at both ends of the chamber 20, as shown in Figure 10, when looking at the rotary blade arrangement relationship of the screw in one sludge transport space inside the chamber, The pitches of the rotary blades 44 of the screws 40a and 40b, 40b and 40c, 40c and 40d are arranged in succession in parallel. And as shown in Fig. 7, each chamber 20, 20 ', 20 "is shown. Screws 40, 40 ', 40 "installed in the < RTI ID = 0.0 > inside < / RTI > to fit the length of each chamber 20, 20', 20 " The drive structure is relatively installed by operating a plurality of screws installed inside the chamber of each stage in a drive unit (not shown) installed horizontally with the liver 22 and installed outside the chamber of each stage to transmit the driving force. Simplify

Meanwhile, in the configuration of the screw according to the present embodiment, as shown in FIG. 11, the mixing plates 46 and 46 ′ which increase toward the rear part are installed. Such a technical configuration is that when the agitation and crushing function is applied at the initial stage when a high viscosity of sludge is introduced, the introduced sludge overflows upwards of the screw 40 so that the effective transport and drying are not achieved. In order to prevent and to ensure effective drying is carried out while the sludge is smoothly transported so that the agitation and grinding action is gradually applied when the surface of the sludge to be transported is dried to some extent. 6 and 11, such a screw 40, the front portion of the position close to the inlet hopper 60, the rear portion of the position close to the outlet hopper 62 and between the front portion and the rear portion. Consisting of the middle portion of the, the middle portion of the first mixing plate 46 protruding in one direction horizontally with the pitch direction of the screw 40 is successively installed to have a predetermined interval, the rear portion and the pitch direction of the screw 40 The second mixing plate 46 ', which protrudes in both directions horizontally, is installed in series so as to have a predetermined interval.

The sludge rapid drying apparatus 10 according to this embodiment having such a configuration is provided with a magnetron 70 and a heating lamp 80 to effectively dry the sludge.

The magnetron 70 allows microwaves generated by the microwave generator 72 to act in the screw direction. That is, the magnetron 70 is disposed above the chamber 20 so that microwaves can be arranged in a horizontal direction of the chamber 20 so as to act as an inner space 22 in which the screw 40 is installed. In particular, in the present embodiment, as shown in Figs. 6 and 8, the wave guide 74 (see Fig. 5) is provided so that the microwaves can effectively act on the sludge, and the shape of the upper case 26 is the It was formed to correspond to the traveling direction to maximize the efficiency of the microwave.

The heating lamp 80 is disposed above the chamber 20 so that the near infrared rays or the infrared rays act in the direction of the screw 40 so that the heating lamps 80 are disposed in the horizontal direction of the chamber 20. In particular, such a heating lamp 80 is disposed between the magnetron 70 so as not to interfere with the magnetron 70 in order to prevent breakage and not interfere with the progress of the microwave. As shown in FIG. 12, the heating lamp 80 used in the sludge drying apparatus 10 according to the present embodiment is formed by inserting the heating heating element 82 into the transparent quartz tube 84, and the quartz tube 84 By plating (86) on the upper outer circumferential surface of the c), the near-infrared or infrared rays are radiated downward, thereby controlling the direction of the near-infrared or infrared rays and preventing damage to the heating heating element 82 due to microwaves. .

In the sludge rapid drying apparatus 10 according to the present invention, microwaves are installed on the upper surface of the inside of the chamber 20 by installing a reflector plate 114 of a glossy metal material having excellent physical properties such as chemical resistance (acid resistance, alkali resistance), heat resistance, and the like. And near-infrared or infrared rays are directly irradiated to the sludge, and reflecting microwaves radiated in reverse direction from a plurality of magnetrons and near-infrared rays irradiated in a reverse direction from a plurality of heating lamps in the axial direction of the multi-screw to improve the drying treatment efficiency of the sludge. .

In addition, in the sludge rapid drying apparatus 10 according to the present invention, as shown in FIG. 6, heat inside the chamber 20 is lost to the outside by using a heat insulating material 116 such as glass wool material around the chamber 20. To prevent as much as possible.

As described above, a rapid drying apparatus for treating a large amount of sludge according to a preferred embodiment of the present invention and a method of rapidly drying sludge by the apparatus are shown according to the above description and drawings, but this is merely an example. It will be understood by those skilled in the art that various changes and modifications can be made without departing from the spirit of the present invention.

1 is a schematic view of a conventional sludge drying apparatus;

2 is a side view of a conventional sludge drying apparatus;

3 is a front view of the sludge drying apparatus shown in FIG.

4A and 4B are front views of a chamber showing a state in which a highly viscous sludge is introduced into a chamber and transported in a conventional sludge drying apparatus;

5 is a view for explaining the technical idea of the sludge rapid drying apparatus and method according to the present invention;

Figure 6 is a cross-sectional view showing a cross section of the chamber of the sludge rapid drying apparatus according to a preferred embodiment of the present invention;

7 is a side view of the sludge rapid drying apparatus shown in FIG.

8 is a front view of the sludge rapid drying apparatus shown in FIG.

9a and 9b is a view for explaining the configuration of the chamber in the sludge rapid drying apparatus according to a preferred embodiment of the present invention;

10 is a view for explaining the installation form of the screw in the sludge rapid drying apparatus according to a preferred embodiment of the present invention;

11 is a view for explaining the configuration of the screw installed in the upper chamber in the sludge rapid drying apparatus according to a preferred embodiment of the present invention;

12 is a view for explaining in detail the heating lamp in the sludge rapid drying apparatus according to a preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: sludge drying device 12: frame

20, 20 ', 20 ": Chamber 22: Internal space

26: upper case 28: cover

30: split plate 32: bottom surface convex

37: clearance 38: side convex

Screw: 40, 40 ', 40 ", 40a, 40b, 40c, 40d, 40e, 40f, 40g, 40h

42: shaft 44: rotary blade

46: First Mixing Plate 46 ': Second Mixing Plate

50: drive unit

60: inflow hopper 62: outflow hopper

64, 66: Medium Hopper 70: Magnetron

72: microwave generator 74: wave guide

80: heating lamp 82: heating heating element

84: quartz tube 86: plating

90: dehumidification exhaust gas supply unit 92: exhaust gas inlet

100: hot air supply unit 110: control unit

112: sludge anti-gravity plate 114: reflector plate

116: insulation

Claims (9)

A chamber having a frame, an inner space supported by the frame and communicating in a horizontal direction, an inflow hopper for introducing sludge into the front end portion, and an outlet hopper for discharging the dried sludge in the rear end portion; A sludge drying apparatus including a plurality of multiaxial screws rotatably supported at both ends of a chamber, and comprising a plurality of magnetrons and a plurality of heating lamps arranged in succession in the horizontal direction of the chamber. The chamber prevents sludge biasing to form a plurality of sludge transport spaces by forming an interface in a space between one screw of a plurality of screws provided in the inner space for transporting sludge and the other screw of the adjacent plurality of screws. Plate is installed, And the upper surface of the inside of the chamber is provided with a reflector plate made of a metal material for reflecting the microwaves emitted from the plurality of magnetrons in the reverse direction and the near infrared rays irradiated in the opposite direction from the plurality of heating lamps in the axial direction of the multi-axis screw, In addition, the chamber is composed of a plurality of multi-stage chamber, the sludge introduced into the inlet hopper is dried in the front chamber and then flows into the chamber through the inlet of the rear chamber through the outlet and is dried and then processed to the outside through the outlet hopper. It is a multi-stage drying method that flows out, a rapid drying apparatus for treating a large amount of sludge by improving the thermal efficiency by attaching a heat insulating material on the outer surface of the wall forming the inner space. The method of claim 1, The multi-axis screw is arranged in succession in parallel so that the pitch of the rotary blades of one screw and the other screw adjacent to each other are mutually parallel, and the sludge supplied to the inlet hopper is transferred along the rotary blade in the direction of the outlet hopper along the rotary blade. Rapid drying apparatus for treating a large amount of sludge, characterized in that composed of a plurality of screws that are horizontally installed in the inner space rotated by a drive unit installed outside the chamber. The method of claim 1, The heating lamp is a heating lamp such as a near infrared lamp or an infrared lamp, and is disposed between the magnetrons so as not to interfere with the magnetrons. The method according to claim 1 or 2, The plurality of screws is a rapid drying device for processing a large amount of sludge, characterized in that the operation is driven by a drive unit having a motor for transmitting a driving force outside the chamber of each stage. The method according to claim 1 or 2, The sludge rapid drying device dehumidifies the high-temperature exhaust gas generated when the sludge is dried in the inner space of the chamber where the screw is installed, and then flows it back into the inner space of the chamber to act as an auxiliary heat source for heating the inner space. Rapid drying apparatus for processing a large amount of sludge, characterized in that. Sludge (functional sludge) to be dried is introduced into the chamber through the inlet hopper, and is dried and processed by heating with microwave, near infrared or infrared light while pulverizing and stirring with a plurality of screws, and then drying sludge to the outside through the outflow hopper. In the sludge drying method characterized in that the discharge, The sludge is supplied to one end of the chamber and installed in a space between one side screw of a plurality of screws that are arranged in parallel and rotated so that the pitches of the rotary blades alternate with each other during the drying process, and are disposed in a space between the other screws of the plurality of adjacent screws. Sludge is prevented from slanting in one direction by the sludge anti-skid plate and is transferred to the other end by the rotary blade of the screw, Near-infrared rays irradiated by actuating heating lamps disposed continuously between the magnetrons and the microwaves emitted by the operation of the microwave generator in the magnetrons installed continuously at a predetermined interval in the sludge feed direction, and acting in the screw direction. The infrared rays act in the direction of the screw, and the microwaves and near infrared rays or infrared rays emitted in the reverse direction are reflected in the axial direction of the multi-axial screw using a reflector, and the sludge is rapidly heated while being crushed, stirred and transported into the plurality of screws. A rapid drying method for treating a large amount of sludge, characterized in that the drying. delete delete delete

Images