Apparatus for suppling or recovering heat energy and regenerative thermal oxidizer facility including it

Abstract

The present invention relates to a thermal energy supply and recovery device and a thermal storage combustion oxidation facility including the same. Among these, the thermal energy supply and recovery device includes a gas burner for generating superheated gas in a combustion chamber, a heat control valve for selectively discharging superheated gas from the combustion chamber, a heat medium unit capable of selectively supplying or recovering thermal energy to the combustion chamber through a heat medium, and a controller for controlling the operation of the gas burner, the heat control valve, and the heat medium unit. The controller can control the operation of the gas burner so that the internal temperature of the combustion chamber rises to a preset target temperature range, control the operation of the heat control valve so that superheated gas is discharged from the combustion chamber when the internal temperature exceeds the target temperature range, and control the operation of the heat medium unit so that the internal temperature satisfies the optimal temperature range within the target temperature range.

Description

Technology Field

[0001] The present invention relates to a thermal energy supply and recovery device and a thermal storage combustion oxidation facility including the same. Background Technology

[0002] Generally, volatile organic compounds (VOCs) are generated in large quantities by industrial activities, and due to the recent increase in fossil fuel consumption, this problem is frequently occurring in densely populated residential areas.

[0003] In particular, as volatile organic compounds (VOCs) released into the atmosphere have emerged as an environmental issue at waste disposal sites such as landfills, there is a growing trend toward the widespread use of technologies that utilize regenerative thermal combustion oxidation systems to heat waste to high temperatures for combustion and oxidation. Furthermore, with the application of materials with excellent high-temperature durability and high-temperature fluid heat transfer technology, appropriate combustion techniques are required depending on the type and condition of the waste. Consequently, pretreatment technologies are necessary to remove pollutants throughout the entire waste treatment process by controlling the supply of combustion air, regulation of combustion reactions, and emission of combustion-induced pollutants, while ensuring the internal temperature of the combustion chamber maintains a target value. Additionally, posttreatment technologies are required to remove pollutants generated by combustion.

[0004] Regenerative combustion oxidation systems are widely used in industrial settings due to their simple structure and excellent removal efficiency of volatile organic compounds. In the case of regenerative combustion oxidation systems used in the petrochemical industry, operating costs are low because more than 95% of the waste heat exhausted after combustion can be recovered using a regenerative material. When volatile organic compound (VOC) concentrations exceed 1,200 ppm (based on toluene concentration), regenerative combustion oxidation systems have the advantage of being able to operate without auxiliary fuel.

[0005] Recently, in order to reduce greenhouse gas emissions, there is a growing demand for an approach that shifts from the conventional concept of simple environmental pollution control facilities to one that utilizes waste heat recovery and reuse as an energy source for industrial greenhouse gas reduction and production cost savings.

[0006] However, since high efficiency can be maintained by removing VOCs while maintaining a high temperature of 800 degrees inside the combustion chamber, the method used involves opening the heat control valve to vent the high temperature inside the combustion chamber to the outside to prevent combustion chamber explosion when the combustion chamber temperature is higher than the target value, and operating the gas burner to raise the combustion chamber temperature using a flame when the temperature is low. This has resulted in the disadvantage of wasting energy due to the frequent operation of the heat control valve and the gas burner. Additionally, since the gas burner must be operated to raise the combustion chamber temperature when it drops below the target value, there is a disadvantage of wasting energy because the gas burner and the heat control valve must be operated repeatedly to maintain a constant temperature range.

[0007] Accordingly, there is a need for technology that can maintain the combustion chamber temperature at a set temperature while minimizing heat loss. Prior art literature

[0008] Republic of Korea Registered Patent No. 10-1754758 (Registered June 30, 2017) The problem to be solved

[0009] Embodiments of the present invention were invented against the background described above, and aim to provide a thermal energy supply recovery device capable of maintaining the temperature of a combustion chamber constant within a fine range by supplying high-temperature and low-temperature fluids to the combustion chamber, and a thermal storage combustion oxidation facility including the same. means of solving the problem

[0010] According to one embodiment of the present invention, a thermal energy supply and recovery device for supplying or recovering thermal energy to a combustion chamber of a thermal storage combustion oxidation facility may be provided, comprising: a gas burner for generating superheated gas in the combustion chamber; a heat control valve for selectively discharging the superheated gas from the combustion chamber; a heat medium unit capable of selectively supplying or recovering thermal energy to the combustion chamber through a heat medium; and a controller for controlling the operation of the gas burner, the heat control valve, and the heat medium unit, wherein the controller controls the operation of the gas burner so that the internal temperature of the combustion chamber rises to a preset target temperature range, controls the operation of the heat control valve so that the superheated gas is discharged from the combustion chamber when the internal temperature exceeds the target temperature range, and controls the operation of the heat medium unit so that the internal temperature satisfies an optimal temperature range within the target temperature range.

[0011] Additionally, the heat transfer unit may include: a heat transfer pipe arranged to enable heat transfer to the combustion chamber and providing a heat transfer path through which the heat transfer medium can flow; a first heat transfer supply pipe providing a first heat transfer path through which the first heat transfer medium can flow to supply a first heat transfer medium having a temperature higher than a preset first temperature to the heat transfer pipe; a second heat transfer supply pipe providing a second heat transfer path through which the second heat transfer medium can flow to supply a second heat transfer medium having a temperature lower than a preset second temperature to the heat transfer pipe; and a heat transfer valve capable of selectively connecting the heat transfer path and the first heat transfer path, or selectively connecting the heat transfer path and the second heat transfer path, under the control of the controller.

[0012] In addition, the heat transfer medium unit may be provided in multiple units having different diameters.

[0013] Additionally, the heat transfer medium unit may include a first heat transfer medium unit providing a first heat transfer channel through which the heat transfer medium can flow; a second heat transfer medium unit providing a second heat transfer channel having an inner diameter larger than the inner diameter of the first heat transfer channel; a third heat transfer medium unit providing a third heat transfer channel having an inner diameter larger than the inner diameter of the second heat transfer channel; and a fourth heat transfer medium unit providing a fourth heat transfer channel having an inner diameter larger than the inner diameter of the third heat transfer channel.

[0014] In addition, the controller can selectively open and close the first heat transfer channel, the second heat transfer channel, the third heat transfer channel, and the fourth heat transfer channel through a heat medium valve, thereby controlling the flow rate of the heat medium to 1 to 15 times the preset reference flow rate.

[0015] According to one embodiment of the present invention, a thermal energy supply and recovery device for supplying or recovering thermal energy to the combustion chamber may be provided, wherein the thermal energy supply and recovery device comprises: a gas burner for generating superheated gas in the combustion chamber; a heat control valve for selectively discharging the superheated gas from the combustion chamber; a heat medium unit capable of selectively supplying or recovering thermal energy to the combustion chamber through a heat medium; and a controller for controlling the operation of the gas burner, the heat control valve, and the heat medium unit, wherein the controller controls the operation of the gas burner so that the internal temperature of the combustion chamber rises to a preset target temperature range, controls the operation of the heat control valve so that the superheated gas is discharged from the combustion chamber when the internal temperature exceeds the target temperature range, and controls the operation of the heat medium unit so that the internal temperature satisfies an optimal temperature range within the target temperature range.

[0016] Additionally, the heat transfer medium unit may include a first heat transfer medium unit providing a first heat transfer channel through which the heat transfer medium can flow; a second heat transfer medium unit providing a second heat transfer channel having an inner diameter larger than the inner diameter of the first heat transfer channel; a third heat transfer medium unit providing a third heat transfer channel having an inner diameter larger than the inner diameter of the second heat transfer channel; and a fourth heat transfer medium unit providing a fourth heat transfer channel having an inner diameter larger than the inner diameter of the third heat transfer channel. Effects of the invention

[0017] According to embodiments of the present invention, when it is desired to rapidly increase the temperature of the combustion chamber, a high-temperature fluid can be supplied into the combustion chamber to increase the internal temperature of the combustion chamber, and when it is desired to rapidly decrease the temperature of the combustion chamber, superheated gas inside the combustion chamber can be discharged through a heat control valve, and a low-temperature fluid can be supplied to a heat transfer pipe to recover excess thermal energy inside the combustion chamber, thereby having the effect of precisely maintaining the internal temperature of the combustion chamber.

[0018] In addition, according to embodiments of the present invention, by installing a plurality of heat transfer pipes with a diameter that is twice the size inside the combustion chamber, when the internal temperature of the combustion chamber reaches a target value, high-temperature and low-temperature liquids are supplied to the heat transfer pipes installed inside the combustion chamber, thereby achieving fine temperature control inside the combustion chamber.

[0019] In addition, according to embodiments of the present invention, by arranging a plurality of heat transfer tubes with cross-sectional areas that increase by a factor of two in the combustion chamber, when fluid is supplied into the heat transfer tubes, the amount of fluid supplied can be adjusted from a factor of one to a factor of fifteen depending on the cross-sectional area of ​​the heat transfer tubes.

[0020] In addition, according to embodiments of the present invention, by arranging a plurality of hollow heat transfer tubes with different cross-sectional areas, such as 1x, 2x, 4x, and 8x, in the combustion chamber, the internal temperature of the combustion chamber of the thermal storage combustion oxidation device can be controlled consistently and precisely.

[0021] In addition, according to embodiments of the present invention, when the combustion chamber temperature becomes higher than a target value, a low-temperature liquid can be supplied to the heat transfer pipe to slightly lower the internal temperature of the combustion chamber, and the fluid heated in the combustion chamber can be recovered through a heat transfer pipe installed outside the combustion chamber to efficiently utilize thermal energy. Brief explanation of the drawing

[0022] FIG. 1 is a schematic diagram illustrating a thermal storage combustion oxidation facility according to one embodiment of the present invention. Figure 2 is an exploded perspective view showing the main components of the thermal storage combustion oxidation system of Figure 1. FIG. 3 is a block diagram illustrating the control flow of a thermal energy supply and recovery device according to one embodiment of the present invention. FIG. 4 is a plan view illustrating a heat medium unit of a heat energy supply recovery device according to one embodiment of the present invention. Figure 5 is a diagram showing a comparison of the diameters of the heat transfer unit of Figure 4. Figure 6 is a state diagram illustrating fluid flow control in the heat transfer medium unit of Figure 4. FIG. 7 is a diagram illustrating a comparison of the magnitude of the flow rate according to the opening and closing status (on, off) of the heat medium unit in a thermal energy supply and recovery device according to one embodiment of the present invention. FIG. 8 is a diagram showing a comparison of the magnitude of the flow rate according to the opening and closing status (on, off) of the heat medium unit in a heat energy supply and recovery device according to a modified example of the present invention. FIG. 9 is a diagram illustrating the operating timing of a gas burner, a heat control valve, and a heat medium unit in a heat energy supply recovery device according to one embodiment of the present invention. FIG. 10 is a flowchart illustrating the flow of fluid according to the operation of a gas burner, a heat control valve, and a heat medium unit in a thermal energy supply and recovery device according to one embodiment of the present invention. Specific details for implementing the invention

[0023] Hereinafter, the configuration and operation according to an embodiment of the present invention will be described in detail with reference to the attached drawings. The following description is one of several patentable aspects of the present invention, and may constitute part of the detailed description of the present invention.

[0024] However, in describing the present invention, specific descriptions regarding known configurations or functions may be omitted to clarify the present invention.

[0025] The present invention is capable of various modifications and may include various embodiments, and specific embodiments are illustrated in the drawings and described in the detailed description. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0026] Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but such components are not limited by such terms. These terms are used solely for the purpose of distinguishing one component from another.

[0027] When it is stated that one component is 'connected' or 'connected' to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between.

[0028] The terms used in this invention are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise.

[0029] Preferred embodiments of the present invention will be described in more detail with reference to the attached drawings.

[0030] Referring to FIGS. 1 to 5, the thermal storage combustion oxidation facility (1) according to the present invention can slightly increase the internal temperature of the combustion chamber (20) and supply a low-temperature fluid into the combustion chamber (20) to recover thermal energy inside the combustion chamber (20), thereby reducing the internal temperature variation of the combustion chamber (20) and maintaining a constant temperature. Such a thermal storage combustion oxidation facility (1) may include a thermal energy supply recovery device (10) and a combustion chamber (20).

[0031] The thermal energy supply and recovery device (10) can supply or recover thermal energy to maintain the temperature of the combustion chamber (20) at a constant level within a fine range. For example, if the temperature of the combustion chamber (20) is to be rapidly increased, the thermal energy supply and recovery device (10) can increase the internal temperature of the combustion chamber (20) by supplying a high-temperature fluid to the combustion chamber (20), and if the temperature of the combustion chamber (20) is to be rapidly decreased, the thermal energy supply and recovery device (10) can maintain the internal temperature of the combustion chamber (20) precisely by recovering excess thermal energy inside the combustion chamber (20) by supplying a low-temperature fluid to the combustion chamber (20) while discharging superheated gas inside the combustion chamber (20). The thermal energy supply and recovery device (10) may include a gas burner (100), a heat control valve (200), a heat medium unit (300), a controller (400), and a temperature sensor (500).

[0032] The gas burner (100) may be a burner capable of generating superheated gas inside the combustion chamber (20). The gas burner (100) may be positioned outside the combustion chamber (20). The gas burner (100) may receive air from the combustion fan (60) and spray a flame inside the combustion chamber (20).

[0033] The heat control valve (200) may be a valve capable of selectively discharging superheated gas from the combustion chamber (20). When the combustion chamber (20) is overheated above a preset temperature, the heat control valve (200) may discharge hot air inside the combustion chamber (20) to the outside. The operation of the heat control valve (200) may be controlled by a controller (400).

[0034] The heat medium unit (300) can selectively supply or recover thermal energy to the combustion chamber (20) using a heat medium. For example, the heat medium unit (300) can provide thermal energy to the combustion chamber (20) by supplying a high-temperature heat medium to the combustion chamber (20), or recover thermal energy from the combustion chamber (20) by supplying a low-temperature heat medium to the combustion chamber (20). The heat medium may be a high-temperature or low-temperature fluid capable of transferring thermal energy to the combustion chamber (20).

[0035] The heat transfer unit (300) may be provided in multiple units having different diameters. The multiple heat transfer units (300) may be arranged through the lower part of the combustion chamber (20). The multiple heat transfer units (300) may consist of a first heat transfer unit (300-1), a second heat transfer unit (300-2), a third heat transfer unit (300-3), and a fourth heat transfer unit (300-4).

[0036] The first heat medium unit (300-1) may be located in the innermost position among the plurality of heat medium units (300). When the heat medium unit (300) is positioned at the bottom of the combustion chamber (20), the first heat medium unit (300-1) may be positioned closest to the central axis of the combustion chamber (20). The first heat medium unit (300-1) may provide a first heat transfer path through which the heat medium can flow. The first heat transfer path may be a path having the smallest inner diameter among the paths of the second heat medium unit (300-2), the third heat medium unit (300-3), and the fourth heat medium unit (300-4).

[0037] The second heat transfer unit (300-2) may be spaced apart from the outside of the first heat transfer unit (300-1). When the heat transfer unit (300) is placed at the bottom of the combustion chamber (20), the first heat transfer unit (300-1) may be spaced apart from the first heat transfer unit (300-1) and the second heat transfer unit (300-2). The second heat transfer unit (300-2) may provide a second heat transfer channel through which the heat transfer medium can flow. The second heat transfer channel may be a channel having an inner diameter larger than the inner diameter of the first heat transfer channel and a smaller inner diameter than the inner diameter of the second heat transfer channel. For example, when the inner diameter of the first heat transfer channel is d, the inner diameter of the second heat transfer channel may be 1.41d, and the second heat transfer channel may have a cross-sectional area twice the size of the first heat transfer channel.

[0038] The third heat transfer unit (300-3) may be spaced apart from the outside of the second heat transfer unit (300-2). When the heat transfer unit (300) is positioned at the bottom of the combustion chamber (20), the third heat transfer unit (300-3) may be spaced apart between the second heat transfer unit (300-2) and the fourth heat transfer unit (300-4). The third heat transfer unit (300-3) may provide a third heat transfer channel through which the heat transfer medium can flow. The third heat transfer channel may be a channel having an inner diameter larger than the inner diameter of the second heat transfer channel and smaller than the inner diameter of the fourth heat transfer channel. For example, when the inner diameter of the first heat transfer channel is d, the inner diameter of the third heat transfer channel may be 2d, and the third heat transfer channel may have a cross-sectional area four times larger than that of the first heat transfer channel.

[0039] The fourth heat transfer unit (300-4) may be spaced apart from the outside of the third heat transfer unit (300-3). When the heat transfer unit (300) is placed at the bottom of the combustion chamber (20), the fourth heat transfer unit (300-4) may be spaced apart from the outside of the fourth heat transfer unit (300-4). The fourth heat transfer unit (300-4) may provide a fourth heat transfer channel through which the heat transfer medium can flow. The fourth heat transfer channel may be a channel having an inner diameter larger than the inner diameter of the third heat transfer channel. For example, when the inner diameter of the first heat transfer channel is d, the inner diameter of the fourth heat transfer channel may be 2.83d, and the fourth heat transfer channel may have a cross-sectional area eight times larger than that of the first heat transfer channel.

[0040] Each heat medium unit (300), that is, the first heat medium unit (300-1), the second heat medium unit (300-2), the third heat medium unit (300-3), and the fourth heat medium unit (300-4), may include a heat medium delivery pipe (310), a first heat medium supply pipe (320), a second heat medium supply pipe (330), and a heat medium valve (340).

[0041] The heat transfer pipe (310) may be positioned at the bottom of the combustion chamber (20) to enable heat transfer to the combustion chamber (20). A heat transfer channel through which the heat transfer medium can flow may be formed inside the heat transfer pipe (310). The heat transfer channel may selectively receive a high-temperature or low-temperature fluid from the first heat transfer medium supply pipe (320) or the second heat transfer medium supply pipe (330).

[0042] The first heat medium supply pipe (320) may be connected to a heat medium valve (340) to supply the first heat medium to the heat medium delivery pipe (310). The first heat medium supply pipe (320) may provide a first heat medium flow path through which the first heat medium can flow. In this embodiment, the first heat medium may be a high-temperature fluid having a temperature higher than a preset first temperature. The first temperature may be any reference temperature for raising the internal temperature of the combustion chamber (20).

[0043] The second heat medium supply pipe (330) may be connected to a heat medium valve (340) to supply the second heat medium to the heat medium delivery pipe (310). The second heat medium supply pipe (330) may provide a second heat medium flow path through which the second heat medium can flow. In this embodiment, the second heat medium may be a low-temperature fluid having a temperature lower than a preset second temperature. The second temperature may be any reference temperature for recovering excess thermal energy inside the combustion chamber (20).

[0044] A heat medium valve (340) can be connected between a heat medium transfer pipe (310) and a first heat medium supply pipe (320) / second heat medium supply pipe (330). The heat medium valve (340) can connect the heat transfer path of the heat medium transfer pipe (310) to the first heat medium path, or connect the heat transfer path of the heat medium transfer pipe (310) to the second heat medium path. When the heat medium valve (340) connects the heat transfer path and the first heat medium path, the first heat medium (high temperature fluid) can be moved to the heat medium transfer pipe (310) through the first heat medium supply pipe (320). When the heat medium valve (340) connects the heat transfer path and the second heat medium path, the second heat medium (low temperature fluid) can be moved to the heat medium transfer pipe (310) through the second heat medium supply pipe (330). The operation of the heat transfer fluid valve (340) can be controlled by the controller (400).

[0045] The controller (400) may be a control device capable of controlling the operation of the main components of the heat energy supply recovery device (10), for example, a gas burner (100), a heat control valve (200), a heat medium unit (300), and a temperature sensor (500). The controller (400) may control the operation of the gas burner (100) so that the internal temperature of the combustion chamber (20) rises to a preset target temperature range. For example, the controller (400) may control the operation of the heat control valve (200) so that superheated gas is discharged from the combustion chamber (20) when the internal temperature of the combustion chamber (20) exceeds a preset target temperature range. The controller (400) may control the operation of the heat medium unit (300) so that the internal temperature of the combustion chamber (20) satisfies an optimal temperature range within a preset target temperature range.

[0046] The controller (400) may be implemented by a computing device including a microprocessor, memory, etc., and since the method of implementation is obvious to those skilled in the art, further detailed explanation is omitted.

[0047] The temperature sensor (500) may be a sensor for measuring the internal temperature of the combustion chamber (20). Temperature information regarding the internal temperature of the combustion chamber (20) measured by the temperature sensor (500) may be applied to the controller (400).

[0048] Meanwhile, the combustion chamber (20) may be a combustion chamber capable of heating waste to a high temperature to burn and oxidize it. When the combustion chamber (20) burns contaminated gas at a high temperature, volatile organic compounds can be oxidized and transformed into carbon dioxide and water. By maintaining the internal temperature of the combustion chamber (20) at a target temperature (target value), contaminants can be removed throughout the entire process of waste treatment, and contaminants generated by combustion can be removed.

[0049] A rotary fan (30), a supply fan (40), a purge fan (50), a combustion fan (60), and a stack (70) may be connected to the combustion chamber (20). The rotary fan (30) can supply contaminated air into the interior of the combustion chamber (20). The supply fan (40) can provide contaminated air to the rotary fan (30). The combustion fan (60) can provide air pressure to supply air to the gas burner (100). The stack (70) can discharge clean gas discharged from the combustion chamber (20) to the outside.

[0050] Hereinafter, an embodiment of the thermal energy supply and recovery device according to the present invention will be described in detail.

[0051] Referring to FIG. 6, in order to supply a high-temperature fluid (first heat medium) and a low-temperature fluid (second heat medium) to the combustion chamber (20), the heat control valve (200) can be controlled by a controller (400).

[0052] Referring to FIG. 6(a), when a high-temperature fluid is to be supplied to the combustion chamber (20), the heat control valve (200) can connect the first heat medium supply pipe (320) and the heat medium transfer pipe (310). When the first heat medium supply pipe (320) and the heat medium transfer pipe (310) are connected to each other, the high-temperature fluid supplied through the first heat medium supply pipe (320) can be supplied to the combustion chamber (20) through the heat medium transfer pipe (310).

[0053] Referring to FIG. 6(b), when supplying a low-temperature fluid to the combustion chamber (20), the heat control valve (200) can connect the second heat medium supply pipe (330) and the heat medium transfer pipe (310). When the second heat medium supply pipe (330) and the heat medium transfer pipe (310) are connected to each other, the low-temperature fluid supplied through the second heat medium supply pipe (330) can be supplied to the combustion chamber (20) through the heat medium transfer pipe (310).

[0054] Referring to FIG. 6(b), if the supply of fluid to the combustion chamber (20) is to be stopped, the heat control valve (200) can block the connection between the first heat medium supply pipe (320), the second heat medium supply pipe (330), and the heat medium delivery pipe (310). When the connection between the first heat medium supply pipe (320), the second heat medium supply pipe (330), and the heat medium delivery pipe (310) is blocked, the supply of fluid to the combustion chamber (20) can be stopped.

[0055] Referring to FIGS. 7 and 8, when supplying a flow rate of 1 to 15 times the heat medium unit (300), the flow rate can be changed through an on / off combination of the first heat medium unit (300-1), the second heat medium unit (300-2), the third heat medium unit (300-3), and the fourth heat medium unit (300-4).

[0056] For example, since the first heat medium unit (300-1) uses a heat medium delivery pipe (310) with a diameter d, the flow rate of the heat medium moving through the heat medium delivery pipe (310) of the first heat medium unit (300-1) can be 1 times. The second heat medium unit (300-2) uses a heat medium delivery pipe (310) with a diameter of 1.41d of the first heat medium unit (300-1). Therefore, since the cross-sectional area of ​​the heat medium delivery pipe (310) of the second heat medium unit (300-2) is twice the cross-sectional area of ​​the heat medium delivery pipe (310) of the second heat medium unit (300-2), the second heat medium unit (300-2) can supply twice the flow rate of the first heat medium unit (300-1).

[0057] Since the third heat medium unit (300-3) has a diameter twice that of the second heat medium unit (300-2) and a cross-sectional area four times larger, the third heat medium unit (300-3) can supply four times the flow rate of the first heat medium unit (300-1). Additionally, since the fourth heat medium unit (300-4) has a diameter 2.83 times that of the first heat medium unit (300-1) and a cross-sectional area eight times larger, the fourth heat medium unit (300-4) can supply eight times the flow rate of the first heat medium unit (300-1).

[0058] In this way, by configuring the combination of the first heat medium unit (300-1), the second heat medium unit (300-2), the third heat medium unit (300-3), and the fourth heat medium unit (300-4), the first heat medium unit (300-1), the second heat medium unit (300-2), the third heat medium unit (300-3), and the fourth heat medium unit (300-4) can supply a flow rate from 1 to 15 times.

[0059] Through such a change in flow rate, when the internal temperature of the combustion chamber (20) is higher than the target value, a low-temperature fluid can be supplied to the combustion chamber (20) via the heat medium unit (300) to lower the internal temperature of the combustion chamber (20), and when the internal temperature of the combustion chamber (20) is lower than the target value, a high-temperature fluid can be supplied to the combustion chamber (20) to raise the internal temperature of the combustion chamber (20). In order to control the internal temperature of the combustion chamber (20), the thermal energy supply recovery device (10) can quickly and easily implement thermal energy supply and surplus thermal energy recovery.

[0060] Referring to FIGS. 9 and 10, when the internal temperature of the combustion chamber (20) is measured and the measured value is lower than (target value - β), the t0 to t1 section is a section in which the internal temperature of the combustion chamber (20) is rapidly raised by the operation of the gas burner (100). In the t1 to t2 section, when the internal temperature of the combustion chamber (20) begins to rise and is higher than the target value - β and lower than the target value ± α, a high-temperature fluid is supplied to the heat medium unit (300) to precisely control the internal temperature of the combustion chamber (20), thereby allowing the internal temperature of the combustion chamber (20) to reach within the target value range.

[0061] If the internal temperature of the combustion chamber (20) rises to an overheated state in the t10 to t11 range, which is higher than the target value + β, there is a potential risk of explosion of the combustion chamber (20). Therefore, the internal temperature of the combustion chamber (20) can be lowered by quickly turning on the heat control valve (200) to rapidly discharge the superheated air inside the combustion chamber (20).

[0062] That is, when the internal temperature of the combustion chamber (20) is greater than or equal to the target value + β, the heat control valve (200) is continuously turned on to discharge superheated air from the combustion chamber (20) to the outside. However, in the t3 ~ t4 and t11 ~ t12 sections, when the internal temperature of the combustion chamber (20) is lower than the target value + β and higher than the target value ± α, a low-temperature fluid is supplied to the heat transfer medium unit (300) to slightly lower the internal temperature of the combustion chamber (20) so that it can reach the target value. Through this process, when the internal temperature of the combustion chamber (20) reaches the range of the target value ± α, the temperature control of the combustion chamber (20) can be stopped.

[0063] As described above, the present invention has excellent advantages, such as being able to increase the internal temperature of the combustion chamber by supplying a high-temperature fluid into the combustion chamber when the temperature of the combustion chamber is to be rapidly increased, and to precisely maintain the internal temperature of the combustion chamber by recovering excess thermal energy inside the combustion chamber through a heat control valve while discharging superheated gas inside the combustion chamber and supplying a low-temperature fluid to a heat transfer pipe when the temperature of the combustion chamber is to be rapidly decreased.

[0064] As explained above, the specific description of the present invention has been made through embodiments with reference to the attached drawings, but since the above-described embodiments are merely preferred examples of the present invention, the present invention should not be understood as being limited only to the above-described embodiments, and the scope of the rights of the present invention should be understood as the claims set forth below and equivalent concepts. Explanation of the symbols

[0065] 1: Thermal storage combustion oxidation system 10: Thermal energy supply and recovery device 20: Combustion chamber, 30: Rotary 40: Supply fan 50: Purge fan 60: Combustion fan 70: Stack 100: Gas burner 200: Heat control valve 300: Heat transfer unit 310: Heat transfer pipe 320: First heat supply pipe 330: Second heat medium supply pipe 340: Heat medium valve 400: Controller 500: Temperature sensor

Claims

Claim 1 A thermal energy supply and recovery device for supplying or recovering thermal energy to a combustion chamber of a thermal storage combustion oxidation facility, comprising: a gas burner for generating superheated gas within the combustion chamber; a heat control valve for selectively discharging the superheated gas from the combustion chamber; a heat medium unit capable of selectively supplying or recovering thermal energy to the combustion chamber through a heat medium; and a controller for controlling the operation of the gas burner, the heat control valve, and the heat medium unit, wherein the controller controls the operation of the gas burner so that the internal temperature of the combustion chamber rises to a preset target temperature range, controls the operation of the heat control valve so that the superheated gas is discharged from the combustion chamber when the internal temperature exceeds the target temperature range, and controls the operation of the heat medium unit so that the internal temperature satisfies an optimal temperature range within the target temperature range, and wherein the heat medium unit is arranged to enable heat transfer with the combustion chamber and provides a heat transfer passage through which the heat medium can flow. A heat energy supply recovery device comprising: a first heat medium supply pipe providing a first heat medium flow path through which the first heat medium can flow to supply a first heat medium having a temperature higher than a preset first temperature to the heat medium transfer pipe; a second heat medium supply pipe providing a second heat medium flow path through which the second heat medium can flow to supply a second heat medium having a temperature lower than a preset second temperature to the heat medium transfer pipe; and a heat medium valve capable of selectively connecting the heat transfer path and the first heat medium flow path, or selectively connecting the heat transfer path and the second heat medium flow path, by the control of the controller. Claim 2 delete Claim 3 A heat energy supply and recovery device according to claim 1, wherein the heat medium unit is provided in a plurality of units having different diameters. Claim 4 A heat energy supply and recovery device according to claim 1, wherein the heat medium unit comprises: a first heat medium unit providing a first heat transfer channel through which the heat medium can flow; a second heat medium unit providing a second heat transfer channel having an inner diameter larger than the inner diameter of the first heat transfer channel; a third heat medium unit providing a third heat transfer channel having an inner diameter larger than the inner diameter of the second heat transfer channel; and a fourth heat medium unit providing a fourth heat transfer channel having an inner diameter larger than the inner diameter of the third heat transfer channel. Claim 5 A heat energy supply and recovery device according to claim 4, wherein the second heat transfer channel has a cross-sectional area twice the size of the first heat transfer channel, the third heat transfer channel has a cross-sectional area four times the size of the first heat transfer channel, and the fourth heat transfer channel has a cross-sectional area eight times the size of the first heat transfer channel. Claim 6 A thermal energy supply and recovery device for supplying or recovering thermal energy to a combustion chamber of a thermal storage combustion oxidation facility, comprising: a gas burner for generating superheated gas within the combustion chamber; a heat control valve for selectively discharging the superheated gas from the combustion chamber; and a heat medium unit capable of selectively supplying or recovering thermal energy to the combustion chamber through a heat medium. The apparatus includes a controller for controlling the operation of the gas burner, the heat control valve, and the heat medium unit, wherein the controller controls the operation of the gas burner so that the internal temperature of the combustion chamber rises to a preset target temperature range, controls the operation of the heat control valve so that the superheated gas is discharged from the combustion chamber when the internal temperature exceeds the target temperature range, and controls the operation of the heat medium unit so that the internal temperature satisfies an optimal temperature range within the target temperature range, and the heat medium unit comprises: a first heat medium unit providing a first heat transfer path through which the heat medium can flow; a second heat medium unit providing a second heat transfer path having an inner diameter larger than the inner diameter of the first heat transfer path; and a third heat medium unit providing a third heat transfer path having an inner diameter larger than the inner diameter of the second heat transfer path. A heat energy supply recovery device comprising a fourth heat transfer channel having an inner diameter larger than that of the third heat transfer channel, wherein the second heat transfer channel has a cross-sectional area twice the size of the first heat transfer channel, the third heat transfer channel has a cross-sectional area four times the size of the first heat transfer channel, and the fourth heat transfer channel has a cross-sectional area eight times the size of the first heat transfer channel, and the controller controls the flow rate of the heat transfer medium to 1 to 15 times the preset reference flow rate by selectively opening and closing the first heat transfer channel, the second heat transfer channel, the third heat transfer channel, and the fourth heat transfer channel through a heat transfer medium valve. Claim 7 The apparatus comprises: a combustion chamber; and a heat energy supply and recovery device for supplying or recovering heat energy to the combustion chamber, wherein the heat energy supply and recovery device comprises: a gas burner for generating superheated gas within the combustion chamber; a heat control valve for selectively discharging the superheated gas from the combustion chamber; a heat medium unit capable of selectively supplying or recovering heat energy to the combustion chamber through a heat medium; and a controller for controlling the operation of the gas burner, the heat control valve, and the heat medium unit, wherein the controller controls the operation of the gas burner so that the internal temperature of the combustion chamber rises to a preset target temperature range, controls the operation of the heat control valve so that the superheated gas is discharged from the combustion chamber when the internal temperature exceeds the target temperature range, and controls the operation of the heat medium unit so that the internal temperature satisfies an optimal temperature range within the target temperature range, and wherein the heat medium unit is arranged to enable heat transfer with the combustion chamber and provides a heat transfer channel through which the heat medium can flow. A thermal storage combustion oxidation facility comprising: a first heat medium supply pipe providing a first heat medium flow path through which the first heat medium can flow to supply a first heat medium having a temperature higher than a preset first temperature to the heat medium transfer pipe; a second heat medium supply pipe providing a second heat medium flow path through which the second heat medium can flow to supply a second heat medium having a temperature lower than a preset second temperature to the heat medium transfer pipe; and a heat medium valve capable of selectively connecting the heat transfer path and the first heat medium flow path, or selectively connecting the heat transfer path and the second heat medium flow path, by control of the controller. Claim 8 In claim 7, the heat transfer medium unit comprises: a first heat transfer medium unit providing a first heat transfer channel through which the heat transfer medium can flow; a second heat transfer medium unit providing a second heat transfer channel having an inner diameter larger than the inner diameter of the first heat transfer channel; a third heat transfer medium unit providing a third heat transfer channel having an inner diameter larger than the inner diameter of the second heat transfer channel; and a fourth heat transfer medium unit providing a fourth heat transfer channel having an inner diameter larger than the inner diameter of the third heat transfer channel, wherein the heat transfer medium unit comprises a regenerative combustion oxidation facility.

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