KR101129531B1 - Electrical drying system - Google Patents

Abstract

The present invention discloses an electric drying system for artificially drying agricultural and marine products. Drying system of the present invention comprises a drying chamber having an internal space; A heating pipe embedded in the wall surrounding the drying chamber or installed inside the wall and having a high temperature fluid flowing therein; A dehumidifying flow passage in which one end and the other end communicate with an interior of the drying chamber, respectively; A blowing fan installed inside the dehumidifying passage to flow the internal air of the drying chamber into the dehumidifying passage; It is installed inside the dehumidification passage includes a condensing means for condensing water vapor contained in the air.

According to the present invention can effectively remove the moisture generated during the drying process can greatly increase the drying efficiency. In addition, since a large amount of steam and hot water can be produced at a minimum cost, the large capacity drying chamber can be heated to a high temperature, thereby greatly reducing the cost burden of the farm.

Drying room, dehumidification, electric arc

Description

Electrical drying system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drying system, and more particularly, to a drying system for drying agricultural and marine products, frozen goods, etc. using an electric arc reactor that generates hot steam and hot water.

Agricultural and marine products are often distributed in the form of dried products to increase shelf life and shelf life due to the characteristics of easily deteriorated products. However, since there is a limit in drying the harvested agricultural and marine products naturally, most producers artificially dry the agricultural and aquatic products using a dryer.

A dryer is a device for drying an object placed therein in a high temperature environment, and a conventional dryer creates a high temperature atmosphere by using a heating wire installed on a side wall of a drying chamber or by using combustion heat of an oil boiler.

By the way, conventional dryers do not have a big problem in small scale operation, but if they are used as large-scale drying facilities, excessive power and fuel costs are incurred. Therefore, the cost burden is very high for the user, which lowers the price competitiveness of agricultural and marine products There is a problem.

In addition, in order to increase the drying efficiency, the moisture generated during the drying process must be effectively removed, and the conventional dryer simply removes the moisture by periodically ventilating the internal air or using a non-woven fabric for removing moisture. However, this method can only achieve some dehumidification effect in a small capacity dryer, and a sufficient dehumidification effect cannot be obtained in a large-scale drying facility.

The present invention is to solve this problem, and to provide a way to significantly reduce the maintenance cost of the dryer by securing a heat source of the drying chamber at a minimum power cost.

In addition, the purpose is to provide a drying system that can greatly increase the drying efficiency by enhancing the dehumidification function.

The present invention to achieve the above object, a drying chamber having an internal space; A heating pipe embedded in the wall surrounding the drying chamber or installed inside the wall and having a high temperature fluid flowing therein; A dehumidifying flow passage in which one end and the other end communicate with an interior of the drying chamber, respectively; A blowing fan installed inside the dehumidifying passage to flow the internal air of the drying chamber into the dehumidifying passage; It is provided inside the dehumidifying passage provides a drying system including condensation means for condensing water vapor contained in the air.

The condensing means of the drying system of the present invention may be characterized by being a dehumidifying radiator in which a refrigerant flows therein. In addition, a coolant tank configured to store a coolant may be installed outside the drying chamber, and one end and the other end of the dehumidification radiator may be connected to the coolant tank through a coolant supply pipe and a coolant return pipe, respectively.

In addition, the discharge pipe for introducing the internal air of the refrigerant tank into the dehumidification duct; It may further include a suction pipe for introducing the internal air of the dehumidification flow path into the refrigerant tank, wherein the discharge pipe and the suction pipe is connected to the dehumidification flow path upstream than the dehumidification radiator.

In addition, the dehumidification passage may be characterized in that the heating means for heating the air passing through the condensing means is installed upstream or downstream of the blowing fan.

In addition, the inside of the drying chamber may be characterized in that the lamp heater is installed.

In addition, the drying system of the present invention includes a first flow path through which the fluid inside the heating pipe flows and a second flow path through which the high temperature steam flows, and a heat exchanger for heating the fluid through heat exchange between the steam and the fluid. ; A steam supply pipe and a condensate recovery pipe connected to one end and the other end of the second flow path, respectively; It may be characterized in that it comprises an electric arc reactor for generating steam to be supplied to the steam supply pipe.

In addition, the electric arc reaction apparatus, the reaction tank having an internal space in communication with the steam supply pipe; A solution stored in the reaction tank; A solution storage tank for storing a solution to be supplied to the reaction tank; It may be characterized in that it comprises a plurality of electrode rods which are installed through the reaction tank and spaced apart from each other in the solution to generate an electric arc inside the solution.

In another aspect, the present invention, the drying chamber having an internal space; A heating pipe embedded in the wall surrounding the drying chamber or installed inside the wall and having a high temperature fluid flowing therein; A heat exchanger having a first flow path through which the fluid inside the heating pipe flows and a second flow path through which hot steam flows, and heats the fluid through heat exchange between the steam and the fluid; A steam supply pipe and a condensate recovery pipe connected to one end and the other end of the second flow path, respectively; And an electric arc reaction device for generating steam to be supplied to the steam supply pipe, wherein the electric arc reaction device comprises: a reaction tank having an internal space communicating with the steam supply pipe; A solution stored in the reaction tank; A solution storage tank for storing a solution to be supplied to the reaction tank; Provided is a drying system including a plurality of electrode rods installed through the reaction tank and spaced apart from each other in the solution to generate an electric arc inside the solution.

According to the present invention, since a large amount of steam and hot water can be produced at a minimum cost, the large capacity drying chamber can be heated to a high temperature, thereby greatly reducing the cost burden of the farmhouse according to the operation of the drying chamber.

In addition, it is possible to effectively remove the moisture generated during the drying process can greatly increase the drying efficiency.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

1 is a conceptual diagram of a drying system 100 according to an embodiment of the present invention, Figure 2 is a configuration diagram showing the electric arc reactor 10 in more detail in the drying system 100.

Drying system 100 of the present invention to increase the internal temperature of the drying chamber 110 by using an electric arc reactor (10) capable of generating a large amount of steam and / or hot water and generates hot air in the interior of the drying chamber (110) It is characteristic to let.

The drying chamber 110 has an internal space accommodating the drying table D, and a heating pipe 112 is installed on a wall surrounding the internal space. The drying chamber 110 may be a mobile building such as a container or may be a fixed building.

Since the wall constituting the drying chamber 110 should be insulated from the outside, it is preferable to first attach the heat insulator using a wire mesh or the like to the inside of the wall, and to configure the ocher wall using the loess on the top thereof. If you make ocher walls using dough containing ocher, crests and small stones, you can get the side effect of dehumidification and deodorization. The bottom surface of the drying chamber 110 is preferably coated with a cement or the like and waterproofed after the construction of the loess in consideration of the movement and load of the drying table (D).

At least one of the ceiling, the side wall, and the bottom surface of the ocher wall is provided with a heating pipe 112. In the figure, but the heating pipes 112 are buried in the ceiling and the floor, but the installation position is not limited thereto. For example, the heating pipe 112 may be installed to be exposed to the inside of the wall. The heating pipe 112 serves to heat the drying chamber 110 by using hot water or steam of high temperature flowing therein.

The heat exchanger 120 is installed inside or outside the drying chamber 110, and the heat exchanger 120 has a first flow path and a second flow path that are independent of each other. One end and the other end of the heating pipe 112 are connected to the first flow path of the heat exchanger 120, respectively, and the power for flowing the fluid in the heating pipe 112 is provided by the pump P1.

One end and the other end of the second flow path of the heat exchanger 120 is connected to the first steam supply pipe 121 connected to the electric arc reactor 10 and the first recovery pipe 122 connected to the aqueous solution storage tank 40, respectively. . The first recovery pipe 122 may be provided with a trap 124 for temporarily storing condensate.

Without connecting one end and the other end of the heating pipe 112 to the first flow path of the heat exchanger 120, one end of the heating pipe 112 is connected to the first flow path of the heat exchanger 120 as shown in FIG. One end may be connected and the other end may be connected to the aqueous solution storage tank 40. In this case, a supply pipe 128 connecting the other end of the first storage path of the aqueous solution storage tank 40 and the heat exchanger 120 should be installed, and the supply pipe 128 is provided with a pump P1 for the flow of the aqueous solution. do. In this case, the aqueous solution stored in the aqueous solution storage tank 40 serves as a heating medium flowing along the heating pipe 112.

In addition, the dehumidifying passage 114 is installed inside the drying chamber 110. The dehumidifying passage 114 serves as a passage for introducing the internal air of the drying chamber 110 to dehumidify and discharge it to the drying chamber 110 again.

In the embodiment of the present invention, the dehumidifying passage 114 is formed by using the horizontal duct 114a installed along the ceiling of the drying chamber 110 and the vertical duct 114b installed along the side wall.

One end of the horizontal duct 114a is spaced apart from the side wall of the drying chamber 110 by a predetermined distance, and the lower end of the vertical duct 114b is spaced apart from the bottom surface of the drying chamber 110 by a predetermined distance. In addition, a drain hole 102 through which water generated in the drying process is discharged is formed directly below the vertical duct 114b, and a water collecting device 104 is installed at the lower end of the drain hole 102.

The dehumidifying flow passage 114 installed as described above communicates with the internal space of the drying chamber 110 near the upper and lower edges of the drying chamber 110, respectively. When a blower is installed in the horizontal duct 114a or the vertical duct 114b, air in the drying chamber 110 flows into the dehumidifying passage 114 and flows.

Only one dehumidifying passage 114 may be formed, or a plurality of dehumidifying passages 114 may be formed. The installation position and the number of the dehumidification passage 114 may be variously designed according to the size of the drying chamber (110). In addition, the widths of the horizontal duct 114a and the vertical duct 114b may be variously changed. For example, the horizontal duct 114a and the vertical duct 114b may have the same width as that of the ceiling and the sidewall of the drying chamber 110, respectively. May have In this case, the dehumidification passage may be implemented to be isolated from the interior space of the drying chamber 110 only by the horizontal bulkhead and the vertical bulkhead installed separately from the ceiling and the side wall without using a tube-shaped duct.

In an embodiment of the present invention, a hot air radiator 130 and a blower fan 138 for generating air flow are installed in the horizontal duct 114a. One end of the hot air radiator 130 is connected to the electric arc reactor 10 through the second steam supply pipe 131 and the other end of the hot air radiator 106 is the aqueous solution storage tank (2) through the second recovery pipe (132) 40).

The hot air radiator 130 and the blower fan 138 serve to supply the inside of the drying chamber 110 by heating the cold air again while undergoing a dehumidification process. Blower fan 138 may operate during the drying process, or may operate intermittently according to a set cycle. On the other hand, the resistive heating means may be installed in place of the hot air radiator 130, but as the size of the drying chamber and the duct increases, the power cost increases, thereby generating steam generated by the electric arc reaction apparatus 10 according to the embodiment of the present invention. It is more advantageous in terms of cost.

The dehumidifying radiator 150 is installed inside the vertical duct 114b, and the dehumidifying radiator 150 has a relatively low temperature state because the refrigerant (eg, water) supplied from the refrigerant tank 200 circulates inside. Keep it. Therefore, water vapor condenses in the process of passing the high temperature and high humidity air inside the drying chamber 110 through the dehumidification radiator 150 to obtain a dehumidifying effect.

The refrigerant supplied into the dehumidifying radiator 150 may be supplied through a separate refrigeration cycle, but in the embodiment of the present invention, the refrigerant tank 200 buried in the ground (G) to save maintenance costs. The water supplied from is used as a refrigerant.

That is, the water supply pipe 151 and the water recovery pipe 152 connected to the refrigerant tank 200 are connected to one end and the other end of the dehumidifying radiator 150, respectively, and a circulation pump P3 is installed in the water supply pipe 151. .

The coolant tank 200 serves to cool the coolant using the ground temperature, and is preferably made of a metal material such as stainless for fast heat exchange with the ground (G), but is not limited thereto.

An inner tank 210 is installed inside the coolant tank 200, and a through hole (not shown) is installed at a bottom surface or a lower side surface of the inner tank 210. Therefore, the water stored in the refrigerant tank 200 may flow into and out of the inner tank 210.

An injection nozzle 220 is installed inside the inner tank 210, and the injection nozzle 220 sprays the water supplied by the submersible pump 250 from the outside of the inner tank 210 to the inside of the inner tank 210. It plays a role. Since the periphery of the refrigerant tank 200 actively exchanges heat with the ground (G) and the temperature of water is relatively lower than that of the center, the refrigerant tank (200) is used to promote heat exchange between the water contained in the refrigerant tank (200) and the ground (G). It is preferable to stir or flow water inside 200 appropriately.

In the embodiment of the present invention for this purpose is to install the inner tank 210 and to adopt a method of spraying the water therein. In addition, when water is sprayed from the inside of the inner tank 210, scattered water particles may be prevented from flowing into the drying chamber 110 through the discharge tube 161 which will be described later.

In addition, the embodiment of the present invention proposes a dehumidification structure that can be used auxiliary with the dehumidification radiator 150.

That is, the inner space of the dehumidifying passage 114 and the inner space of the refrigerant tank 200 are connected to the discharge tube 161 and the suction tube 162, and the air of the refrigerant tank 200 is discharged to the discharge tube 161. A discharge fan 167 is installed to flow into the interior of the 114, and a suction fan 168 is installed in the suction pipe 162 to flow air inside the dehumidifying passage 114 into the refrigerant tank 200.

In this case, a part of the water vapor contained in the high temperature and high humidity air introduced into the refrigerant tank 200 through the suction pipe 162 is condensed inside the refrigerant tank 200 at low temperature, so that the air introduced into the discharge tube 161. Absolute humidity is greatly reduced.

At this time, the discharge port 163 of the discharge pipe 161 communicated with the inner space of the dehumidification passage 114 is installed in a lower portion of the suction port 164 of the suction pipe 162, specifically, downstream of the air flow direction. It is preferable. A filter 170 may be installed between the discharge port 163 of the discharge tube 161 and the suction port 164 of the suction tube 162 in the dehumidifying passage 114 to remove moisture and / or foreign matter.

Meanwhile, a plurality of stones may be inserted into the refrigerant tank 200 and the inner tank 210. This increases the overall surface area and promotes condensation of water vapor, and has an effect of achieving thermal equilibrium with the ground (G) sooner. However, filling the stone is not an essential component and may be omitted if necessary.

In the above description, the dehumidifying passage 114 installed in the drying chamber 110 is formed as a horizontal duct 114a and a vertical duct 114b, but is not necessarily limited thereto. For example, only the vertical duct 114b or the horizontal duct 114b may be installed, and a hot air radiator 106 and a dehumidification radiator 150 may be installed therein, and, if necessary, in a direction different from the vertical or horizontal direction. The dehumidifying passage 114 may be provided.

However, it is preferable that the hot air radiator 106 is located downstream from the dehumidifying radiator 150 based on the direction in which air flows inside the dehumidifying passage 114. This is because the air cooled in the process of removing moisture can be supplied to the interior of the drying chamber 110 after being heated while passing through the radiator 106 for hot air.

In addition, as described above, a partition wall spaced apart from the wall of the drying chamber 110 may be provided to form a dehumidifying passage 114 between the wall.

In addition, the dehumidifying passage 114 is easy to be installed in the interior of the drying chamber 110 as shown, but only one end and the other end to communicate with the interior space of the drying chamber 110 and the middle portion to be located outside the drying chamber 110. It may be. In this case, it is preferable to install the aforementioned dehumidifying radiator 150 and the hot air radiator 106 in the dehumidifying passage 114 exposed to the outside of the drying chamber 110. In this case, instead of the dehumidifying radiator 150, it is also possible to install a refrigerant pipe surrounding the dehumidification passage 114. In addition, instead of the hot air radiator 106, a resistive heating coil, a hot water pipe, or a steam pipe surrounding the periphery of the dehumidification passage 114 may be installed.

On the other hand, if the refrigerant tank 200 is installed in the ground (G) as described above, there is an advantage that can secure a refrigerant of a constant temperature in all seasons, but depending on the temperature of the outside air, the refrigerant tank 200 is buried in the ground (G) Can also be installed on the ground without. For example, in winter, since the temperature of the ground is much lower than the ground, using the refrigerant tank 200 installed on the ground may be more dehumidifying effect. In addition, even in the summer season, the interior of the drying chamber 110 has a much higher temperature than the outside, and thus a dehumidifying effect can be obtained to some extent even when the refrigerant tank 200 is installed on the ground.

In addition, both the underground refrigerant tank 200 and the ground refrigerant tank 200 may be installed and the refrigerant tank 200 connected to the dehumidification radiator 150 and the dehumidification passage 114 may be selectively determined according to the temperature of the outside air.

In the interior of the drying chamber 110, a plurality of lamp heaters 140 facing the inner space may be installed, and a reflection plate 142 may be installed at the periphery and / or the bottom of the lamp heater 140. The lamp heater 140 is installed to promote drying, and turns on intermittently or at a set cycle.

The type of the lamp heater 140 is not limited, and for example, a carbon lamp heater, a halogen lamp heater, or the like may be used. The lamp heater 140 may be installed on the ceiling and / or sidewalls of the drying chamber 110, and may be installed on the outer surface of the dehumidifying passage 114.

The first steam supply pipe 121 and the second steam supply pipe 131 may be directly connected to the electric arc reaction device 10, respectively, as shown in the main steam supply pipe 180 directly connected to the electric arc reaction device (10) May be branched from, respectively.

The aqueous solution stored in the aqueous solution storage tank 40 is supplied to the electric arc reactor 10 by the pump P2 when the aqueous solution stored in the electric arc reactor 10 is insufficient.

In order to electronically control the drying system, a temperature sensor (not shown) is installed in the drying chamber 110, and the flow rate of the fluid supplied to the heating pipe 112 is controlled by feeding back the detection result of the sensor, or the blowing fan 138. It can also control the operation of.

On the other hand, the electric arc reactor 10 is a device for producing steam or hot water by generating an electric arc by immersing the electrode 12 of a predetermined material in an aqueous solution 14 of a predetermined component as shown in FIG. 4 is a perspective view of a product including the electric arc reactor 100 and the peripheral device.

Specifically, the electric arc reaction apparatus 10 includes a reaction tank 11 having an inner space, an aqueous solution 14 of a predetermined component stored in the reaction tank 11, and at least a portion of the electric arc reactor 10. It includes a plurality of electrodes 12.

The reaction tank 11 may be selectively used synthetic resin or metal material according to the purpose. For example, when used for steam production, it is preferable to use a metal material such as stainless steel in preparation for high pressure, and when used for hot water production, an inexpensive synthetic resin material may be used. In addition, the capacity or size of the reaction tank 11 may be appropriately selected depending on the intended use.

In particular, the electric arc reactor 10 according to an embodiment of the present invention can generate an electric arc inside the aqueous solution 14 and maintain the arc, thereby greatly improving the power efficiency compared to the conventional low temperature electrolysis method. There is this. This is because the amount of current consumed since the electric arc occurs inside the aqueous solution 14 is drastically reduced.

When an electric arc is generated in the reaction tank 11, since an electric shock is applied to the electrode 12, it is very important to properly select the material of the electrode 12. For example, the electrode used in the low temperature electrolysis device is mainly made of materials such as copper and platinum, and if the electric arc is generated by applying commercial power to the electrode of such material, the electrode is instantly damaged due to electric shock. It was found to be impossible.

In addition, even in the same electrode 12, since the degree of burnout varies greatly depending on the type of the aqueous solution 14, it is very important to properly select and combine the aqueous solution 14 and the electrode 12.

Specific components and materials of the aqueous solution and the electrode will be described later.

The power supply unit 20 may be connected to each connection terminal 13 of the electrode through a power line, supply AC power, or supply DC power converted through an AD converter (not shown).

The control unit 30 serves to selectively control the power supply of the power supply unit 20 by feeding back a detection result of the temperature sensor 32 and the emergency temperature sensor 34 installed in the reaction tank 11.

That is, by feeding back the detection result of the temperature sensor 32 to selectively cut off the power supply to each electrode 30 to maintain the temperature of the aqueous solution 14 to the target temperature, the user to the control unit 30 It is preferable that an input means (not shown) capable of setting the target temperature of (14) is provided.

In addition, the control unit 30 may be provided with an emergency power cut-off means (not shown) that cuts off the power supply when the emergency temperature sensor 34 senses an overheating temperature. The sensor used for the control operation of the controller 30 is not limited to the above-described one, and may include, for example, a pressure sensor, an indoor temperature sensor, and the like.

Although not shown in the drawing, the control unit 30 includes input means (switch, button, touch screen, etc.) through which an operator can input various variables of the system (eg, aqueous solution temperature, allowable pressure, etc.) and a predetermined warning sound in an emergency. The speaker or the light emitting means for generating may be connected.

One end of the steam discharge pipe 18 is connected to the main steam supply pipe 180, the gas-liquid separator 60 is installed on one side of the main steam supply pipe 180 around the connection node (N) to which the steam discharge pipe 18 is connected. On the other side of the main steam supply pipe 180, the pressure feedback pipe 62 is connected to the water level control tank 50 and the main steam supply pipe 180.

The gas-liquid separator 60 serves to separate the liquid contained in the discharged steam, the separated liquid is sent to the trap 80 through the liquid recovery pipe 61, the aqueous solution storage tank in the trap 80 again ( Is sent to 40). The liquid return pipe 61 is preferably provided with a check valve for preventing backflow.

The pressure feedback pipe 62 serves to equalize the internal pressure of the water level control tank 50 and the reaction tank 11, and thus, the water level inside the reaction tank 11 is adjusted through the water level of the water level control tank 50. It can be confirmed indirectly. The water level sensor 51 is installed in the water level control tank 50, and the controller 30 feeds back the detection result of the water level sensor 51 to control the pump P1 to replenish the aqueous solution into the reaction tank 11. can do.

Various valves 91 and 92 are installed in the main steam supply pipe 180, and in particular, a safety valve 93 that is opened for safety in case of excessive pressure should be installed. In addition, the main steam supply pipe 180 may be provided with a pressure gauge 94, a temperature gauge 95, an abnormal pressure gauge 96, an insulating flange 97 and the like.

The aqueous solution stored in the aqueous solution storage tank 40 is supplied to the inside of the reaction tank 11 through the pump (P1), to prevent the backflow to the aqueous solution supplement pipe (63) connecting the pump (P1) and the reaction tank (11) It is preferable that a check valve 98 is provided. In addition, a pipe connecting the pump P1 and the aqueous solution storage tank 40 may be provided with a strainer 99 for removing foreign matter.

The liquid recovery tube 61, the pressure feedback tube 62, the aqueous solution supplement tube 63, and the like, it is preferable to use a flexible hose, but is not necessarily limited thereto.

The reaction tank 11 is preferably installed spaced apart from the base 2 of the case, for this purpose, a plurality of support rods 4 are installed on the base 2, and the reaction tank 11 at the upper end of the support rod 4. It is desirable to install it. At this time, it is preferable that the dustproof insulating rubber 6 is interposed between the lower end of the supporting rod 4 and the base 2 for protecting the reaction tank 11 from external impact and for electrical insulation. It is also preferable to ground the base 2 for safety. The base 2 may be a bottom portion of a case accommodating the reaction tank 11 therein.

Hereinafter will be described the aqueous solution and electrode used in the electric arc reactor 10 that is a key component of the drying system 100 according to an embodiment of the present invention.

Table 1 below shows the types of the aqueous solution 14 used in the electric arc reactor 10 of the present invention. MEG solutions are shown together for convenience regardless of whether they are aqueous solutions.

[Table 1] Types of Aqueous Solutions

Kinds ingredient PH






Sodium
Ion Aqueous Solution

Water + Sodium Hydroxide (NaOH)
(Weight ratio 100: 0.6-0.8)  11.00-12.70 Water + Sodium Chloride (NaCl) + Sodium Glutamate
(Weight ratio 100: 1: 1.2)  11.00-12.70 Water + sodium glutamate
(Weight ratio 100: 0.6-0.8)  11.00-12.70 Water + Sodium Nitrate (NaNO3)
(Weight ratio 100: 0.6-0.8)  11.00-12.70 Water + Sodium Sulfide (Na2S)
(Weight ratio 100: 0.6-0.8)  11.00-12.70 Water + Sodium Sulfate (Na2SO4)
(Weight ratio 100: 0.6-0.8)  11.00-12.70 Water + Sodium Carbonate (Na2CO3)
(Weight ratio 100: 0.6-0.8)  11.00-12.70 Water + Sodium Hydrocarbonate (NaHCO3)
(Weight ratio 100: 0.6-0.8)  11.00-12.70 Ocher longevity + sodium hydroxide
 11.00-12.70 Ocher Water + ocher powder (weight ratio 7: 3 ~ 10: 3)
 9.0 to 10.8 Acidic aqueous solution
 2.0 to 2.5
Carbon aqueous solution Water + Carbon (Graphite, Charcoal) Powder
(Weight ratio 100: 10-20)

MEG solution
MEG (Mono Ethylene Glycol) + Carbon (Graphite, Charcoal)
Powder (weight ratio 100: 10-20) MEG + sodium ion solution
11.00-12.70

That is, in the embodiment of the present invention, the sodium-based aqueous solution, the yellow soil longevity, the acidic ion water solution, the carbon aqueous solution, the MEG (Mono Ethylene Glycol) solution, etc. are placed in the reaction tank 11 to generate an arc between the electrode rods 12.

Sodium-based aqueous solution is a mixture of water and sodium compounds in one embodiment of the present invention by mixing the water and sodium compounds in a weight ratio of 100: 0.6 ~ 0.8, the hydrogen ion concentration (PH) is in the range of 11.00 ~ 12.70 Use it.

The sodium compound may be at least one selected from sodium hydroxide (NaOH), sodium glutamate, sodium nitrate (NaNO3), sodium sulfide (Na2S), sodium sulfate (Na2SO4), sodium carbonate (NaCO3), sodium hydrogencarbonate (NaHCO3). In addition, sodium chloride, sodium hyposulfite, EDTA2 sodium, EDTA2 calcium sodium, sodium sulfite, sodium tartarate, sodium fumarate, sodium L-glutamate, disodium 5'inosuccinate, sodium sodium ribonuate, sodium DL-tartrate, sodium nitrite, saccharin Sodium, sodium polyhydroacetate, sodium benzoate and the like can be used.

As another example, an ion aqueous solution prepared in the range of PH 11.00 to 12.70 by mixing sodium chloride (NaCl) and sodium glutamate in a weight ratio of 100: 1: 1.2, respectively, may be used.

As another embodiment, an ion aqueous solution prepared in the range of PH 11.00 to 12.70 by adding sodium hydroxide to ocher longevity may be used. At this time, the ocher jangjang is prepared by adding ocher powder to water in a weight ratio of 100: 20, for example, stirring for about 30 minutes with a stirrer of 600 RPM and then precipitating ocher for 24 hours.

In the case of using only loess longevity, water and loess are preferably mixed in a weight ratio of 7: 3 to 10: 3 to prepare a pH of 9.0 to 10.8.

The acidic ion aqueous solution is preferably prepared in the range of PH 2.2 ~ 2.5 using known acid compounds. For example acetic acid, glacial acetic acid, gluconic acid, citric acid, phosphoric acid, tartaric acid, lactic acid, adipic acid, fumaric acid, glycic acid, glycic acid, sorbic acid, dihydroacetic acid (DHA), benzoic acid, propionic acid, fermented vinegar, orange liquid , Lemon juice, apple juice, cola, beer and the like can be used.

The aqueous carbon solution is preferably prepared by mixing carbon powder such as graphite and charcoal in water at a weight ratio of 100: 10 to 20.

The MEG solution may be a mixture of carbon powders such as graphite and charcoal in MEG at a weight ratio of 100: 10 to 20, or may be prepared in the range of PH 11.00 to 12.70 by mixing the aforementioned sodium-based aqueous solution with MEG. .

When the electrode 120 of the material described below is used, such as the above-described ion aqueous solution, the reaction is not only stably made even after the electric arc is generated, and damage of the electrode 12 does not occur. However, if the PH range is smaller than the above-mentioned standard, the electric resistance reaction is weak and no electric arc occurs. If the PH range is larger than this, the electric resistance reaction is explosive at the commercial power supply (220V, 380V), causing melting or burning of the electrode 12. Will occur.

Meanwhile, the material of the electrode rod 12 used in the electric arc reactor 10 is preferably spring hard wire (SWRH), low alloy high tension steel, corrosion resistance low alloy high tensile steel or high tensile strength carbon steel. Moreover, what plated nickel, platinum, or the predetermined alloy to the said material can also be used.

Hard wire is characterized by having high tensile strength as a fresh wire after heat treatment of hard steel wire having a carbon content of 0.4% ~ 0.96%.

Low alloy high tensile steel is a small amount of alloying element added to general structural carbon steel, usually expressed as HT (High-Ten), tensile strength is 50kg / mm ² or more, yield point is 30kg / mm ² or more It has the characteristics of excellent corrosion resistance and workability.

High tensile carbon steel is a carbon steel containing about 0.2% of carbon, and includes silicon, manganese, nickel, chromium and copper, and has a tensile strength of 50 kg / mm ² or more.

As another embodiment, silicon carbide (SiC) or kanthal may be used, and special steel bars such as Hastelloy, Inconel, Monel, and tungsten may be used. Silicon carbide has high thermal conductivity, but also has excellent solvent resistance, solvent resistance, and oxidation resistance, and Kantal is an iron-chromium-aluminum alloy, which has the highest temperature resistance among heat-resisting alloys. Hastelloy is an acid alloy containing nickel as a main component, and Inconel is an alloy such as nickel-chromium-iron-carbon and has excellent heat resistance.

Two electrodes 12 may be used when connected to a single-phase power supply, and three electrodes may be used as shown when connected to a three-phase power source. When the capacity of the reaction tank 11 is large, two or more pairs of electrode rods 12 may be provided. That is, 2n (n is an integer of 1 or more) electrodes 12 are provided in the case of a single phase power supply, and 3n (n is an integer of 1 or more) electrodes are provided in the case of a three phase power supply.

In addition, since the electrode 12 is not necessarily installed to penetrate the upper surface of the reaction tank 11, it may be installed to penetrate the side portion of the reaction tank (11). An insulating fixing member such as rubber packing should be installed at the boundary between the electrode rod 12 and the reaction tank 11. In particular, in the case of using the metal reaction tank 11, of course, the electrode rod 12 should be installed so as not to contact the reaction tank (11).

The end of the electrode 12 exposed to the outside of the reaction tank 10 is formed with a connection terminal 13 for connecting the power. The power applied to the connection terminal 13 may be a commercial AC power source, or may be a direct current.

A drain valve for discharging the aqueous solution 14 may be connected to the bottom or side lower end of the reaction tank 11.

Hereinafter, with reference to Figure 1 describes the operation of the drying system 100 according to an embodiment of the present invention.

First, bring in the drying table (D) in which the agricultural and marine products to be dried, etc. are placed in the drying chamber 110, and the door is closed to seal it.

Subsequently, when electric power is supplied to the connection terminal 13 of each electrode rod immersed in the reaction tank 11 filled with the aqueous solution 14 of the above-mentioned components, the conductive solution 14 conducts resistive heating and The temperature gradually rises. The amount of current applied in this process also increases gradually.

However, when the aqueous solution 20 of the above-described component is heated to about 80 ° C., an electric arc is generated between each electrode 14, and as a result, a flame ball is formed inside the aqueous solution 14 as shown in FIG. 5. (火焰 球) occurs.

In particular, power consumption begins to decrease after the arc occurs.

That is, in the process of raising the aqueous solution 14 from room temperature to about 80 ° C, the current consumption increased from about 10A to about 50A at first, but after the arc occurred, the current consumption gradually decreased, and when the aqueous solution 14 began to boil, It was confirmed that the level is lowered to 10A.

Therefore, if the target temperature of the aqueous solution 14 is set above the boiling point, a large amount of steam can be generated with minimum power consumption. According to the conventional method using the electrode, there is no phenomenon that the amount of current decreases because no arc occurs even after heating for a long time.

The high temperature steam generated inside the reaction tank 11 is discharged through the main steam supply pipe 180, some steam is supplied to the heat exchanger 120 through the first steam supply pipe 121, and some steam is supplied to the second steam. It is supplied to the radiator 130 for hot air through the supply pipe 131.

The steam supplied to the heat exchanger 120 is condensed after the heat exchange with the fluid flowing through the heating pipe 112 is recovered to the aqueous solution storage tank 40 through the first recovery pipe (122). In addition, the steam supplied to the radiator 130 for hot air is condensed after heat exchange with the air flowing in the dehumidifying passage 114 is recovered to the aqueous solution storage tank 40 through the second recovery pipe 132.

Through this process, the interior of the drying chamber 110 is heated to a high temperature by a high temperature fluid flowing through the heating pipe 112, water vapor generated in the drying is removed to an appropriate level while passing through the dehumidification passage 114.

Some of the high temperature and high humidity air introduced into the dehumidifying passage 114 flows into the refrigerant tank 200 through the suction pipe 162 connected to the drying chamber 110 and then discharges the steam in the state where some water vapor is removed. 161 is discharged back into the dehumidifying passage 114 again. Since the interior of the dehumidification passage 114 is much higher temperature than the refrigerant tank 200, the relative humidity of the air discharged from the refrigerant tank 200 into the dehumidification passage 114 is significantly lowered.

In addition, water vapor contained in the air flowing in the dehumidifying passage 114 is condensed again in the process of passing through the dehumidifying radiator 150 having a cold surface and discharged through the drain hole 102. Through this process, since the water vapor generated in the drying process is continuously removed, the drying speed is greatly increased.

In addition, according to the present invention may be faster drying speed by the lamp heater 140 installed in the drying chamber.

On the other hand, the drying method peculiar to the present invention will be described below. According to the experiment, when the agricultural and marine products are placed in the interior of the drying chamber 110, the sputtering of a predetermined drying accelerator on the object and then irradiating the lamp heater showed that drying is promoted.

How to make the drying accelerator is as follows.

First, water, ocher powder, and tourmaline powder are mixed in a weight ratio of 70 to 100: 30: 1, respectively, and after stirring and precipitation, the upper liquid is extracted. The extracted solution has an alkaline range of PH 9.0 to 10.8, for convenience. It is called ocher alkaline water.

Subsequently, ocher alkaline water and edible alcohol are mixed in a weight ratio of 10: 1 to 10: 3, sprinkled on the object or sprayed into the drying chamber 110. In case of spraying directly on the object, it is preferable to spray the drying accelerator at a rate of 0.01 to 0.1 g with respect to 100 g of the dry object.

There is also a method of spraying the drying accelerator in the interior space of the drying chamber 110 without spraying directly on the drying object. 6 is a diagram illustrating a drying system for this purpose, a steam supply pipe 190 connected to the interior of the drying chamber 110 is connected to a main steam supply pipe 180 connected to the electric arc reactor 10, and a steam supply pipe ( The end of the 190 is characterized in that the steam injection port 192 is installed. The steam supply pipe 190 should be provided with an on-off valve.

And inside the reaction tank 11 of the electric arc reaction device 10 is stored a drying accelerator prepared in the above-described method, the drying accelerator also has an alkaline in the range of PH 9.0 ~ 10.8, causing an electric arc reaction to produce a large amount of water vapor May occur.

After placing the drying object and spraying the vapor of the drying accelerator through the steam injection port 192 for a predetermined time to the interior of the drying chamber 110, the sprayed steam is settled on the surface of the drying object, at this time of the lamp heater 140 The action promotes drying.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment and may be modified or modified in various forms. By the way, if the embodiment modified or modified as described also includes the technical spirit of the present invention described in the claims to be of course belongs to the scope of the present invention.

1 is a block diagram of a drying system according to an embodiment of the present invention

2 is a block diagram of a drying system showing the electric arc reactor in detail

3 is a configuration diagram showing a modification of the drying system according to an embodiment of the present invention

Figure 4 is a perspective view of the electric arc reactor and its peripheral device

Figure 5 is a photograph showing the appearance of an electric arc in the reaction tank

6 is a configuration diagram showing another modification of the drying system according to an embodiment of the present invention

* Description of the symbols for the main parts of the drawings *

10: electric arc reactor 100: drying system

102: drain hole 104: water collecting device

110: drying chamber 112: heating piping

114: dehumidifying passage 120: heat exchanger

121: first steam supply pipe 122: first recovery pipe

130: hot air radiator 131: second steam supply pipe

132: second recovery pipe 138: blowing fan

140: lamp heater 150: dehumidification radiator

151: water supply pipe 152: water recovery pipe

161: discharge tube 162: suction tube

170: filter 180: main steam supply pipe

190: steam supply pipe 192: steam injection port

200: refrigerant tank 210: inner tank

220: injection nozzle 250: submersible pump

Claims (26)

A drying chamber having an internal space; A heating pipe embedded in the wall surrounding the drying chamber or installed inside the wall and having a high temperature fluid flowing therein; A dehumidifying flow passage in which one end and the other end communicate with an interior of the drying chamber, respectively; A blowing fan installed inside the dehumidifying passage to flow the internal air of the drying chamber into the dehumidifying passage; Condensing means installed in the dehumidifying passage to condense water vapor contained in air; Drying system comprising a The method of claim 1, The condensing means is a drying system, characterized in that the dehumidification radiator in which the refrigerant flows therein 3. The method of claim 2, A refrigerant tank for storing a refrigerant is installed outside the drying chamber, One end and the other end of the dehumidifying radiator is connected to the refrigerant tank through a refrigerant supply pipe and a refrigerant recovery pipe, respectively. The method of claim 3, A discharge pipe for introducing internal air of the refrigerant tank into the dehumidification passage; A suction pipe which introduces internal air of the dehumidifying passage into the refrigerant tank; And a discharge system and the suction pipe are connected to the dehumidification passage upstream than the dehumidification radiator. 5. The method of claim 4, The discharge pipe is connected to the dehumidification flow passage downstream from the suction pipe, and a filter for dehumidification and debris removal is installed between the connection position of the discharge pipe and the connection position of the suction pipe in the dehumidification flow path. Drying system The method of claim 3, The refrigerant tank is a drying system, characterized in that installed in the ground The method of claim 3, The refrigerant tank includes an underground refrigerant tank installed in the ground and a ground refrigerant tank installed in the ground, wherein the dehumidification radiator is selectively connected to the underground refrigerant tank or the ground refrigerant tank according to the temperature of the outside air. Drying system The method of claim 3, An inner tank installed inside the coolant tank and having a through hole through which the coolant passes; Injection means installed in the inner tank; An underwater pump installed outside the inner tank to supply a refrigerant to the injection means; Drying system comprising a The method of claim 1, A drying system, characterized in that the heating means for heating the air passing through the condensing means is installed on the upstream side or downstream side of the blowing fan inside the dehumidification passage. The method of claim 1, Drying system, characterized in that the lamp heater is installed inside the drying chamber The method of claim 1, A heat exchanger having a first flow path through which the fluid inside the heating pipe flows and a second flow path through which hot steam flows, and heats the fluid through heat exchange between the steam and the fluid; A steam supply pipe and a condensate recovery pipe connected to one end and the other end of the second flow path, respectively; An electric arc reactor for generating steam to be supplied to the steam supply pipe; Drying system comprising a The method of claim 11, The electric arc reaction device, A reaction tank having an internal space communicating with the steam supply pipe; A solution stored in the reaction tank; A solution storage tank for storing a solution to be supplied to the reaction tank; A plurality of electrode rods installed through the reaction tank and immersed apart from each other in the solution to generate an electric arc inside the solution; Drying system comprising a The method of claim 12, One end of the condensate return pipe is a drying system, characterized in that connected to the solution storage tank The method of claim 12, One end of the heating pipe is connected to one end of the first flow path, the other end of the first flow path is connected to the solution storage tank, and the other end of the heating pipe is connected to the solution storage tank, to the solution storage tank. Drying system, characterized in that the stored solution flows into the heating pipe via the heat exchanger The method of claim 12, Inside the dehumidification passage is provided heating means for heating the air passing through the condensing means upstream or downstream of the blowing fan again, The heating means has a drying system characterized in that it has an internal flow path is connected to the steam supply pipe one end and the other end is connected to the solution storage tank. A drying chamber having an internal space; A heating pipe embedded in the wall surrounding the drying chamber or installed inside the wall and having a high temperature fluid flowing therein; A heat exchanger having a first flow path through which the fluid inside the heating pipe flows and a second flow path through which hot steam flows, and heats the fluid through heat exchange between the steam and the fluid; A steam supply pipe and a condensate recovery pipe connected to one end and the other end of the second flow path, respectively; An electric arc reactor for generating steam to be supplied to the steam supply pipe; Including; The electric arc reaction device, A reaction tank having an internal space communicating with the steam supply pipe; A solution stored in the reaction tank; A solution storage tank for storing a solution to be supplied to the reaction tank; A plurality of electrode rods installed through the reaction tank and immersed apart from each other in the solution to generate an electric arc inside the solution; Drying system comprising a The method according to claim 12 or 16, The solution includes at least one of sodium-based ion solution, ocher longevity, acidic ion solution, carbon aqueous solution, MEG (Mono Ethylene Glycol) solution, The plurality of electrodes, the spring hard wire (SWRH), low alloy high tension steel (Low alloy high tension steel), corrosion resistance low alloy high tensile steel, high-tensile carbon steel, silicon carbide (SiC), cantal (kanthal), Hastelloy (Hastelloy) A drying system comprising at least one material selected from among inconel, monel, and tungsten. The method of claim 17, The aqueous sodium-based aqueous solution is a drying system characterized in that the mixture of water and sodium compounds in the weight ratio of 100: 0.6 ~ 0.8 range of hydrogen ion concentration (PH) in the range of 11.00 ~ 12.70 The method of claim 17, The sodium-based aqueous solution is a drying system, characterized in that the pH of 11.00 ~ 12.70 as a mixture of sodium chloride (NaCl) and sodium glutamate in a weight ratio of 100: 1: 1.2, respectively, in water The method of claim 17, The sodium-based aqueous solution is a drying system, characterized in that the ion aqueous solution prepared in the range of PH 11.00 ~ 12.70 by adding sodium hydroxide to ocher longevity The method of claim 17, The loess longevity is a drying system, characterized in that the mixture of water and ocher in a weight ratio of 7: 3 to 10: 3 in the range of PH 9.0 ~ 10.8 The method of claim 17, The acidic ion solution is a drying system, characterized in that the range of PH 2.2 ~ 2.5 The method of claim 17, The carbon aqueous solution is a drying system, characterized in that the carbon powder in water mixed with a weight ratio of 100: 10 ~ 20 The method of claim 17, The MEG (Mono Ethylene Glycol) solution is characterized in that the carbon powder is mixed with MEG in a weight ratio of 100: 10-20, or the sodium-based ion aqueous solution is mixed with MEG, and has a pH range of 11.00 to 12.70. system The method of claim 17, The spring hard wire, the low alloy high tensile steel, the corrosion resistance low alloy high tensile steel or the high tensile carbon steel is a drying system characterized in that the plating of nickel, platinum or a predetermined alloy The method according to claim 12 or 16, A drying system, characterized in that the steam injection means for directly injecting the steam generated in the reaction tank is installed inside the drying chamber.

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