Burner use control apparatus and method controlling use of burner of rto with heat-preserving solid in combustion chamber

Abstract

A burner usage control device and a burner usage control method are disclosed for controlling the use of a burner of an RTO in which a heat-preserving solid is provided within a combustion chamber. The burner usage control device according to the present invention is a burner usage control device for controlling the use of a burner of an RTO (Regenerative Thermal Oxidizer) in which a heat-preserving solid is provided within a combustion chamber, and comprises: a state determination unit for determining the On / Off state of the burner; an internal temperature measuring unit for measuring the internal temperature of the combustion chamber when the burner is in the Off state; a gas temperature measuring unit for measuring the temperature of the gas introduced into the combustion chamber; and an On / Off switching control unit for switching the burner to the On state based on the difference between the internal temperature measured by the internal temperature measuring unit and the gas temperature measured by the gas temperature measuring unit.

Description

Technology Field

[0001] The present invention relates to a burner usage control device and a control method for a Regenerative Thermal Oxidizer (RTO). More specifically, the invention relates to a burner usage control device and a control method that, by controlling the use of a burner of an RTO in which a heat-preserving solid is provided within the combustion chamber, can not only reduce the use of fuels such as coal, oil, and gas but also minimize the heating time required to reheat the combustion chamber. Background Technology

[0002] Harmful gases containing various pollutants are generated in industrial sites, and among these, large quantities of volatile organic compounds (VOCs) are produced in fields involving large-scale painting and coating, such as shipyards.

[0003] Volatile organic compounds (VOCs) react with light in the atmosphere to generate ozone, aldehydes, or photochemical oxides, causing environmental pollution such as global warming. Furthermore, the substances comprising VOCs produce irritating and unpleasant odors at low temperatures; when absorbed into the human body through the respiratory system, they can cause disorders of the nervous system and other organs. Since some of these compounds possess carcinogenic properties, strict emission regulations for exhaust facilities have recently been implemented.

[0004] Regenerative Thermal Oxidizers (RTOs), which offer excellent fuel cost savings and pollutant removal efficiency, are primarily used to treat hazardous gases containing volatile organic compounds generated in industrial sites.

[0005] Generally, a thermal storage combustion oxidation device has multiple thermal storage chambers filled with thermal storage material at the bottom of the combustion chamber to allow harmful gases to flow in. In this process, the heat accumulated in the thermal storage material is used to preheat the harmful gases to be treated, so that when the harmful gases to be treated reach the combustion chamber, the temperature is raised to a temperature close to the combustion temperature (e.g., 800°C). In the process of exhausting the high-temperature clean gas treated after combustion through the thermal storage chambers, heat is recovered (thermal storage), and the temperature of the clean gas finally exhausted is maintained at a level approximately 30 to 40°C higher than the temperature of the supply gas in a low-temperature state.

[0006] Meanwhile, in order to raise the temperature of the hazardous gas to be treated that has reached the combustion chamber, the inside of the combustion chamber must be heated. The greater the difference between the temperature of the hazardous gas that has reached the combustion chamber and the target temperature (e.g., 800°C), the longer the operating time of the burner used to heat the inside of the combustion chamber increases.

[0007] However, in general regenerative combustion oxidation devices, as the use of the burner increases, the amount of fuel used in the burner, such as coal, oil, and gas, increases, and this leads to the problem of increased environmental pollution. Prior art literature

[0008] Published Patent Application No. 10-2012-0056446 (Date of publication: June 4, 2012) The problem to be solved

[0009] The present invention was devised to solve the aforementioned problems and aims to provide a burner usage control device and a control method thereof, which can reduce the use of fuels such as coal, oil, and gas by controlling the use of a burner of an RTO in which a heat-preserving solid is provided within the combustion chamber, as well as minimize the heating time required to reheat the combustion chamber. means of solving the problem

[0010] A burner usage control device according to one aspect of the present invention for achieving the aforementioned purpose is a burner usage control device for controlling the use of a burner of a regenerative thermal oxidizer (RTO) in which a heat-preserving solid is provided within a combustion chamber, comprising: a state determination unit for determining the On / Off state of the burner; an internal temperature measuring unit for measuring the internal temperature of the combustion chamber when the burner is in the Off state; a gas temperature measuring unit for measuring the temperature of a gas introduced into the combustion chamber; and an On / Off switching control unit for switching the burner to the On state based on the difference between the internal temperature measured by the internal temperature measuring unit and the gas temperature measured by the gas temperature measuring unit.

[0011] The aforementioned burner usage control device may further include a power supply control unit that supplies power to a filament provided in the heat preservation solid when the temperature measured by the internal temperature measuring unit is below a preset reference temperature.

[0012] The aforementioned burner usage control device may further include an off-switching control unit that switches the burner to an off state when the burner is in an ON state and the temperature measured by the gas temperature measuring unit becomes greater than or equal to a comparison temperature set to a value lower than a preset reference temperature.

[0013] Here, the power supply control unit cuts off the power supplied to the filament when the temperature measured by the internal temperature measuring unit is higher than the rise temperature set to a value higher than the reference temperature.

[0014] A burner usage control method according to one aspect of the present invention for achieving the aforementioned purpose comprises, in a burner usage control method performed by a burner usage control device, a step of determining the on / off state of a burner; a step of measuring the internal temperature inside a combustion chamber when the burner is in the off state; a step of measuring the temperature of a gas introduced into the combustion chamber; and a step of switching the burner to the on state based on the difference between the internal temperature and the gas temperature.

[0015] The aforementioned burner usage control method may further include the step of controlling the power supply to a filament provided in a heat preservation solid when the internal temperature is below a preset reference temperature.

[0016] The aforementioned burner usage control method may further include the step of switching the burner to an off state when the burner is in an ON state and the gas temperature becomes greater than or equal to a comparison temperature set to a value lower than a preset reference temperature.

[0017] Here, the step of controlling the power supply to the filament supplies power to the filament when the internal temperature is lower than the reference temperature by an error range, and cuts off the power supplied to the filament when the internal temperature is higher than the reference temperature by an error range. Effects of the invention

[0018] According to the present invention, by controlling the use of the burner of an RTO in which a heat-preserving solid is provided within the combustion chamber, not only can the use of fuels such as coal, oil, and gas be reduced, but the heating time required to reheat the combustion chamber can also be minimized. Brief explanation of the drawing

[0019] FIG. 1 is a drawing showing a heat preservation solid applied to a burner usage reduction device for an RTO according to one embodiment of the present invention. Figure 2 is a drawing showing an example of a heat preservation solid fixing device that fixes multiple heat preservation solids of Figure 1 in an arrangement. Figure 3 is a drawing showing an example in which the heat preservation solid fixing device of Figure 2 is installed in the combustion chamber of a heat storage combustion oxidation device, and is a side cross-sectional view of the combustion chamber. Figure 4 is a drawing showing an example in which multiple heat preservation solid fixing devices of Figure 2 are installed in the combustion chamber of a heat storage combustion oxidation device, and is a drawing showing a plan view of the combustion chamber. FIG. 5 is a diagram showing an example in which a burner usage reduction device for an RTO according to another embodiment of the present invention is applied to the combustion chamber of a thermal storage combustion oxidation device, and shows a side cross-sectional view of the combustion chamber. Figure 6 shows a planar cross-sectional view of the combustion chamber of Figure 5. FIG. 7 is a schematic diagram illustrating the configuration of a burner usage control device according to an embodiment of the present invention. Figure 8 is a diagram illustrating the general use of an RTO burner. FIG. 9 is a drawing illustrating the use of a burner controlled by a burner usage control device according to one embodiment of the present invention. FIG. 10 is a drawing illustrating the use of a burner controlled by a burner usage control device according to another embodiment of the present invention. FIG. 11 is a flowchart showing a burner usage control method according to an embodiment of the present invention. FIG. 12 is a diagram showing a VOC reduction system of a thermal storage combustion oxidation device according to an embodiment of the present invention. Figure 13 is a schematic diagram illustrating the configuration of the VOC reduction monitoring server of Figure 12. Figure 14 is a diagram showing an example of recording the amount of VOC generated corresponding to each operating section of the burner over time. FIG. 15 is a flowchart illustrating a VOC reduction monitoring method according to an embodiment of the present invention. Specific details for implementing the invention

[0020] Hereinafter, some embodiments of the present invention will be described with reference to exemplary drawings. In labeling the components of each drawing with reference numerals, the same components are indicated by the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the embodiments of the present invention, if it is determined that a detailed description of related known components or functions would hinder understanding of the embodiments of the present invention, such detailed description is omitted.

[0021] In addition, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the embodiments of the present invention. These terms are intended merely to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by these terms. Where it is stated that a component is "connected," "combined," or "connected" to another component, it should be understood that the component may be directly connected, combined, or connected to the other component, but that another component may also be "connected," "combined," or "connected" between the component and the other component.

[0022] FIG. 1 is a drawing showing a heat preservation solid applied to a burner usage reduction device for an RTO according to one embodiment of the present invention, and FIG. 2 is a drawing showing an example of a heat preservation solid fixing device that fixes a plurality of heat preservation solids of FIG. 1 arranged.

[0023] Referring to FIGS. 1 and 2, the heat-preserving solid (110) has a heat preservation rate greater than a set value and is formed in the shape of a cylindrical rod of a set length. Here, the heat preservation rate is the ratio of heat that an object can maintain during a unit time, and can be calculated as the ratio of the heat maintained after a unit time elapsed to the initial heat of the object at a certain reference temperature. For example, if a stone and an iron of the same size are heated to the same temperature and then placed at room temperature, and the respective temperatures of the stone and the iron are measured after a unit time has elapsed, the respective temperature changes of the stone and the iron after a unit time have elapsed are different. At this time, the heat preservation rate for each of the stone and the iron can be calculated by calculating the ratio of the temperature measured after each unit time has elapsed to the initial temperature before the unit time has elapsed (assuming the initial temperatures of the stone and the iron are the same). Here, room temperature is assumed to have no temperature change.

[0024] A heat-retaining solid (110) is an object with a heat retention rate greater than or equal to a set value, and the higher the heat retention rate, that is, the longer the time required for the heat applied to the object to drop below a set temperature, the better. To this end, the heat-retaining solid (110) can be formed from various materials such as marble, iron, and copper. However, the material of the heat-retaining solid (110) is not limited to the types described, and may be implemented as a metal alloy such as Ni-Cr alloy, Fe-Cr alloy, or radiant tube heater, or as a non-metal such as silicon carbide (SiC), molybdenum silicide (MoSi2), lanthanum chromite (LaCrO2), or carbon (graphite).

[0025] Additionally, the heat-retaining solid (110) is provided with a filament (112) installed along the longitudinal direction and can be heated by receiving electrical energy from the outside. In this case, it is preferable that the filament (112) be installed to reciprocate in a zigzag shape from one end of the heat-retaining solid (110) to the other end.

[0026] The heat preservation solid fixing device (120) arranges a plurality of heat preservation solids (110) in parallel and fixes one end of each heat preservation solid (110). At this time, the heat preservation solid fixing device (120) fixes a certain length of each heat preservation solid (110) as shown in FIG. 2 (a). In addition, as shown in FIG. 2 (b), the heat preservation solid fixing device (120) may have an electrical supply terminal (122) installed on the side opposite to the direction of each heat preservation solid (110) to supply electrical energy connected to a filament (112). Here, although the heat preservation solid fixing device (120) is shown as fixing three heat preservation solids (110), the number of heat preservation solids (110) fixed by the heat preservation solid fixing device (120) is not limited to this.

[0027] Figure 3 is a drawing showing an example in which the heat preservation solid fixing device of Figure 2 is installed in the combustion chamber of a heat storage combustion oxidation device, and is a side cross-sectional view of the combustion chamber.

[0028] Referring to FIG. 3, the heat preservation solid fixing device (120) is fixed to the ceiling of the combustion chamber (100) so that each heat preservation solid (110) faces vertically downward within the combustion chamber. At this time, the heat preservation solid fixing device (120) can be installed so that it penetrates the upper surface of the combustion chamber (100) and the direction of the electrical supply terminal (122) faces upward within the combustion chamber (100).

[0029] At this time, the heat preservation solid fixing device (120) may be installed in a direction opposite to the side wall where the burner (20) of the combustion chamber (100) is installed. For example, as shown in FIG. 3, the heat preservation solid fixing device (120) may be installed in close proximity to the side opposite the burner (20) when the burner (20) installed on one side of the combustion chamber (100) applies heat into the interior (10) of the combustion chamber.

[0030] When the burner (20) applies heat to the interior (10) of the combustion chamber, the heat generated by the burner (20) is transferred to the heating element (110) and preserved by the heating element (110). At this time, even when the heating process by the burner (20) is finished and the exhaust process is executed, the temperature inside the combustion chamber (10) can be maintained within the range set by the heating element (110).

[0031] In addition, when the interior of the combustion chamber (10) is to be reheated, the temperature drop inside the combustion chamber (10) is not significant due to the heat preserved by the heating element (110). In this case, the combustion chamber (100) of the thermal storage combustion oxidation device according to the embodiment of the present invention can raise the temperature inside (10) with minimal energy by supplying electricity to the filament (112) of the heating element (110) without the need to heat the interior (10) by consuming fuel through the burner (20).

[0032] Meanwhile, a plurality of heat-preserving solid fixing devices (120) may be provided. In this case, each heat-preserving solid fixing device (120) may be arranged radially from the central axis of the cylindrical combustion chamber (100), as shown in FIG. 4. In this case, it is preferable that each heat-preserving solid fixing device (120) be installed in a fan-shaped radial pattern based on the heat-preserving solid fixing device (120) installed opposite the burner (20).

[0033] FIG. 5 is a drawing showing an example in which a burner usage reduction device for an RTO according to another embodiment of the present invention is applied to the combustion chamber of a thermal storage combustion oxidation device, showing a side cross-sectional view of the combustion chamber, and FIG. 6 is a plan cross-sectional view of the combustion chamber of FIG. 5.

[0034] Referring to FIGS. 5 and 6, the combustion chamber (100) of a thermal storage combustion oxidation device according to an embodiment of the present invention may include a plurality of fixed rods (130) that are formed in a rod shape of a set length and are fixed vertically downward to the ceiling of a cylindrical combustion chamber, and a heat preservation solid (140) that is fixed and supported at the end of each fixed rod (130) and installed horizontally inside the combustion chamber (10). Here, although the fixed rods (130) are shown as being provided in two to support the heat preservation solid (140), the number of fixed rods (130) is not limited thereto, and may be provided in three or more numbers to support the heat preservation solid (140) inside the combustion chamber (100).

[0035] At this time, the heat-preserving solid (140) is formed in a spiral shape and can be installed in the same direction as the ignition direction of the burner (20) installed on the side wall of the combustion chamber (100). In this case, the heat-preserving solid (140) can be made of the same material as the aforementioned heat-preserving solid (110).

[0036] Additionally, the heat-preserving solid (140) is provided with a filament installed along the longitudinal direction, and the end of the filament may penetrate to the outside of the combustion chamber (100) along the fixed rod (130). In this case, the filament of the heat-preserving solid (100) can heat the heat-preserving solid (140) by receiving electrical energy from the outside.

[0037] FIG. 7 is a schematic diagram illustrating the configuration of a burner usage control device according to an embodiment of the present invention. Here, the burner usage control device (100) according to an embodiment of the present invention controls the use of a burner (20) for a combustion chamber (100) of a thermal storage combustion oxidation device provided with the aforementioned heat preservation solid (110, 140).

[0038] Referring to FIG. 7, a burner usage control device (200) according to an embodiment of the present invention may include a state determination unit (202), an internal temperature measurement unit (204), a gas temperature measurement unit (206), an on-switching control unit (208), a power supply control unit (210), and an off-switching control unit (212).

[0039] Generally, a thermal storage combustion oxidation device allows harmful gas to flow in through a plurality of thermal storage chambers filled with thermal storage material at the bottom of a combustion chamber (100). In this process, the heat accumulated in the thermal storage material is used to preheat the harmful gas to be treated, so that when the harmful gas to be treated reaches the combustion chamber, it is heated to a temperature close to the combustion temperature (e.g., 800°C), and after combustion, the high-temperature clean gas treated is exhausted again through the thermal storage chambers. In this process, the burner (20) is switched to an ON state to heat the gas introduced into the combustion chamber (100), or switched to an OFF state to exhaust the heated gas inside the combustion chamber (100).

[0040] At this time, as shown in FIG. 8, in a general thermal storage combustion oxidation device, when the burner (20) is switched from the ON state to the OFF state to discharge the heated gas inside the combustion chamber (100), the internal temperature of the combustion chamber (100) decreases.

[0041] In addition, when the heated gas inside the combustion chamber (100) is discharged, a general thermal storage combustion oxidation device introduces new gas into the combustion chamber (100) and switches the burner (20) back to the ON state to heat the introduced gas to a reference temperature (e.g., 800°C).

[0042] At this time, the greater the decrease in temperature inside the combustion chamber (100) while the burner (20) is switched to the off state, the longer the time to switch the burner (20) back to the on state to heat the gas introduced into the combustion chamber (100) to a reference temperature, or the higher the heating temperature must be.

[0043] In this case, the burner (20) of a general thermal storage combustion oxidation device heats the inside of the combustion chamber (100) using fuel such as coal, oil, or gas, and thus there is a problem of increased environmental pollution. In particular, the lower the temperature of the gas introduced into the inside of the combustion chamber (100), the more the time or heating temperature required to raise the gas to a reference temperature increases, and thus there is a problem of increased environmental pollution.

[0044] The burner usage control device (200) according to an embodiment of the present invention minimizes the use of the burner (20) for heating the inside of the combustion chamber (100), thereby minimizing the use of fuel such as coal, oil, and gas used by the burner (20), and consequently, reducing environmental pollution. Below, the function and operation of each component of the burner usage control device (200) will be described in detail.

[0045] The state determination unit (202) determines whether the burner (20) is in an On / Off state. At this time, the state determination unit (202) determines whether the burner (20) is in an On state or an Off state, that is, whether it is a process of heating the gas introduced into the combustion chamber (100) to a set temperature or a process of exhausting the heated gas inside the combustion chamber (100).

[0046] The internal temperature measuring unit (204) measures the internal temperature of the combustion chamber (100) when the burner (20) is in an off state. At this time, the internal temperature measuring unit (204) can measure the internal temperature of the combustion chamber (100) at a set period from the time when the burner (20) is switched to an off state. Here, since a heat preservation solid (110, 140) is installed inside the combustion chamber (100), the heated temperature inside the combustion chamber (100) is preserved by the heat preservation solid (110, 140), and accordingly, even if the burner (20) is switched to an off state, the temperature inside the combustion chamber (100) gradually decreases as the temperature of the heat preservation solid (110, 140) decreases, as shown in FIG. 9.

[0047] The gas temperature measuring unit (206) measures the temperature of the gas introduced into the combustion chamber (100). At this time, the gas temperature measuring unit (206) can measure the change in temperature at a set period from the time when the gas is introduced into the combustion chamber (100).

[0048] The on / off control unit (208) switches the burner (20) to the on state based on the difference between the internal temperature measured by the internal temperature measuring unit (204) and the gas temperature measured by the gas temperature measuring unit (206).

[0049] The gas introduced into the combustion chamber (100) rises even without using the burner (20) because the temperature inside the combustion chamber (100) is maintained at a relatively high value by the heat preservation solid (110, 140). However, if the difference between the temperature maintained inside the combustion chamber (100) and the temperature of the gas introduced into the combustion chamber (100) is too large, the temperature inside the combustion chamber (100) may decrease due to the temperature of the gas introduced into the combustion chamber (100).

[0050] Accordingly, the on-conversion control unit (208) can calculate the average temperature of the internal temperature measured by the internal temperature measuring unit (204) and the gas temperature measured by the gas temperature measuring unit (206), and switch the burner (20) to the on state based on the amount of heat required to raise the calculated average temperature to a reference temperature. That is, as shown in FIG. 9, the on-conversion control unit (208) can control the burner (20) to switch to the on state from the point in time when the internal temperature measured by the internal temperature measuring unit (204) and the gas temperature measured by the gas temperature measuring unit (208) become average, and through this, the use of the burner (20) can be significantly reduced compared to a general thermal storage combustion oxidation device.

[0051] The power supply control unit (210) supplies power to the filament (112) provided in the heat preservation solid (110, 140) when the temperature measured by the internal temperature measuring unit (204) is lower than or equal to a preset reference temperature. At this time, the power supply control unit (210) supplies power to the filament (112) if the internal temperature measured by the internal temperature measuring unit (204) is lower than the reference temperature by an error range, and can cut off the power supplied to the filament (112) if the internal temperature is higher than the reference temperature by an error range. Here, the error range can be set to a value above a certain temperature and a value below a certain temperature based on the reference temperature.

[0052] Through this, the burner usage control device (200) according to the embodiment of the present invention can maintain the internal temperature of the combustion chamber (100) at a constant level even when the burner (20) is turned off, by supplying power to the filament (112) to generate heat in the heat-preserving solid (110, 140) when the temperature of the heat-preserving solid (110, 140) decreases below the error range when the burner (20) is turned off.

[0053] The off-switching control unit (212) switches the burner (20) to an off state when the burner (20) is in an on state and the temperature measured by the gas temperature measuring unit (206) becomes higher than a comparison temperature set to a value lower than a preset reference temperature.

[0054] At this time, the comparison temperature can be set based on a temperature at which the heat-preserving solid (110, 140) can be heated above a reference temperature by supplying power to the filament (112). In this case, the off-switching control unit (212) switches the burner (20) to an off state at the set comparison temperature even if the gas introduced into the combustion chamber (100) does not rise to the reference temperature, and supplies power to the filament (112) to raise the temperature of the heat-preserving solid (110, 140) so that the temperature of the gas can be raised to the reference temperature.

[0055] FIG. 11 is a flowchart illustrating a burner usage control method according to an embodiment of the present invention. The burner usage control method according to an embodiment of the present invention can be performed by the burner usage control device (200) shown in FIG. 7.

[0056] Referring to FIGS. 1 to 11, the burner usage control device (200) determines whether the burner (20) is in an On / Off state (S101). At this time, the burner usage control device (200) determines whether the burner (20) is in an On state or an Off state, that is, whether it is a process of heating the gas introduced into the combustion chamber (100) to a set temperature or a process of exhausting the heated gas inside the combustion chamber (100).

[0057] The burner usage control device (200) measures the internal temperature of the combustion chamber (100) when the burner (20) is in an off state (S103). At this time, the burner usage control device (200) can measure the internal temperature of the combustion chamber (100) at a set period from the time when the burner (20) is switched to an off state. Here, since a heat preservation solid (110, 140) is installed inside the combustion chamber (100), the heated temperature inside the combustion chamber (100) is preserved by the heat preservation solid (110, 140), and accordingly, even if the burner (20) is switched to an off state, the temperature inside the combustion chamber (100) gradually decreases according to the temperature decrease of the heat preservation solid (110, 140).

[0058] The burner usage control device (200) controls the power supply to the filament (112) provided in the heat preservation solid (110, 140) according to whether the measured internal temperature is lower than or equal to a preset reference temperature (S105). At this time, the burner usage control device (200) supplies power to the filament (112) if the measured internal temperature is lower than the reference temperature by an error range, and can cut off the power supplied to the filament (112) if the internal temperature is higher than the reference temperature by an error range. Here, the error range can be set to a value above a certain temperature and a value below a certain temperature based on the reference temperature.

[0059] Through this, the burner usage control device (200) according to the embodiment of the present invention can maintain the internal temperature of the combustion chamber (100) at a constant level even when the burner (20) is turned off, by supplying power to the filament (112) to heat the heat-preserving solid (110, 140) when the temperature of the heat-preserving solid (110, 140) decreases below the error range.

[0060] The burner usage control device (200) measures the temperature of the gas introduced into the combustion chamber (100) (S107). At this time, the burner usage control device (200) can measure the change in temperature at a set period from the time when the gas is introduced into the combustion chamber (100).

[0061] The burner usage control device (200) switches the burner (20) to the ON state based on the difference between the measured internal temperature and the measured gas temperature (S109).

[0062] The gas introduced into the combustion chamber (100) rises even without using the burner (20) because the temperature inside the combustion chamber (100) is maintained at a relatively high value by the heat preservation solid (110, 140). However, if the difference between the temperature maintained inside the combustion chamber (100) and the temperature of the gas introduced into the combustion chamber (100) is too large, the temperature inside the combustion chamber (100) may decrease due to the temperature of the gas introduced into the combustion chamber (100).

[0063] Accordingly, the burner usage control device (200) can calculate the average temperature of the measured internal temperature and the measured gas temperature, and switch the burner (20) to the ON state based on the amount of heat required to raise the calculated average temperature to a reference temperature. At this time, the burner usage control device (200) can control the burner (20) to the ON state from the point when the gas temperature introduced into the combustion chamber (100) reaches the average temperature, and through this, the use of the burner (20) can be significantly reduced compared to a general thermal storage combustion oxidation device.

[0064] The burner usage control device (200) switches the burner (20) to an off state when the burner (20) is in the ON state and the measured temperature is lower than the preset reference temperature and the comparison temperature is set to be lower than the burner (20) (S111).

[0065] At this time, the comparison temperature can be set based on a temperature at which the heat-preserving solid (110, 140) can be heated above the reference temperature by supplying power to the filament (112). In this case, the burner usage control device (200) switches the burner (20) to the off state at the set comparison temperature even if the gas introduced into the combustion chamber (100) does not rise to the reference temperature, and supplies power to the filament (112) to raise the temperature of the heat-preserving solid (110, 140) so that the temperature of the gas can be raised to the reference temperature.

[0066] FIG. 12 is a diagram showing a VOC reduction system of a thermal storage combustion oxidation device according to an embodiment of the present invention.

[0067] Referring to FIG. 12, the burner usage control device (200) can be connected to a VOC reduction monitoring server (300) via a network (30). Here, the network (30) includes not only the Internet but also CDMA (Code Division Multiple Access), WCDMA (Wideband CDMA), LTE (Long Term Evolution), and 5G (5 th It is defined as a broad concept that includes mobile communication networks such as Generation.

[0068] The VOC reduction monitoring server (300) transmits and receives data with the burner usage control device (200) connected via the network (30) and monitors the reduction of volatile organic compounds of the thermal storage combustion oxidation device corresponding to the burner usage control device (200).

[0069] At this time, the VOC reduction monitoring server (300) can monitor not only the reduction of volatile organic compounds by the thermal storage combustion oxidation device but also the reduction of volatile organic compounds by the burner (20) used to heat the combustion chamber (100) of the thermal storage combustion oxidation device.

[0070] Figure 13 is a schematic diagram illustrating the configuration of the VOC reduction monitoring server of Figure 12.

[0071] Referring to FIG. 13, a VOC reduction monitoring server (300) according to an embodiment of the present invention may include a VOC concentration comparison unit (302), a reduction efficiency determination unit (304), a fuel information storage unit (306), a burner information receiving unit (308), a fuel usage calculation unit (310), a VOC generation calculation unit (312), a VOC generation recording unit (314), a change rate calculation unit (316), and a change rate transmission unit (318).

[0072] The VOC concentration comparison unit (302) compares the VOC concentration per unit volume of the gas flowing into the combustion chamber (100) with the VOC concentration per unit volume of the gas discharged from the combustion chamber (100). To this end, the thermal storage combustion oxidation device preferably has a concentration measuring sensor (not shown) for measuring the VOC concentration in the pipe on the side where gas flows into the combustion chamber (100) and in the pipe on the side where gas is discharged from the combustion chamber (100), respectively. At this time, the VOC concentration values ​​measured in each pipe are transmitted to the VOC reduction monitoring server (300) through the burner usage control device (200).

[0073] The reduction efficiency judgment unit (304) determines the VOC reduction efficiency of the thermal storage combustion oxidation device in response to the result compared by the VOC concentration comparison unit (302). At this time, the reduction efficiency judgment unit (304) can determine the VOC reduction efficiency of the thermal storage combustion oxidation device by calculating the ratio of the VOC concentration of the gas output from the combustion chamber (100) to the VOC concentration of the gas input into the combustion chamber (100).

[0074] The fuel information storage unit (306) stores fuel information including the fuel used by the burner (20), the fuel consumption per unit time at each heating temperature stage of the burner (20), and the amount of VOC generated corresponding to the unit consumption of fuel. For example, when the burner (20) uses diesel fuel, the fuel information storage unit (306) may classify the temperature range in which the burner (20) can generate heat into multiple stages, and store the amount of fuel consumed per unit time when generating heat at each classified stage, and the amount of VOC generated per unit time corresponding to each stage. At this time, the amount of VOC generated may be the amount of VOC generated per unit time that is statistically measured corresponding to each fuel, such as coal, gasoline, and diesel fuel.

[0075] The burner information receiving unit (308) receives burner information including the time when the burner (20) is switched to the ON state and the average heat generation temperature while the burner (20) is in the ON state. At this time, the burner information receiving unit (308) receives information from the burner usage control device (200) regarding the time when the burner (20) is switched from the OFF state to the ON state and information regarding the time when the burner (20) is switched from the ON state to the OFF state, and can calculate the time during which the burner (20) is operated in the ON state based on the received information. In addition, the burner information receiving unit (308) receives information regarding the change in the heat generation temperature of the burner (20) while the burner (20) is operated in the ON state, and can calculate the average of the heat generation temperature during the time during which the burner (20) is operated in the ON state accordingly.

[0076] The fuel consumption calculation unit (310) calculates the amount of fuel used while the burner (20) is in the ON state in response to the received burner information. At this time, the fuel consumption calculation unit (310) estimates the amount of fuel used per unit time corresponding to the average heating temperature during the time the burner (20) is operated in the ON state based on the fuel information stored in the fuel information storage unit (306), and accordingly calculates the amount of fuel used during the operating time when the burner (20) is operated in the ON state.

[0077] The VOC generation calculation unit (312) calculates the amount of VOC generated while the burner (20) is in the ON state, corresponding to the amount of fuel calculated by the fuel consumption calculation unit (310). At this time, the VOC generation calculation unit (312) can calculate the amount of VOC generated corresponding to the estimated fuel consumption based on the fuel information stored in the fuel information storage unit (306). Here, although it has been explained that the VOC generation calculation unit (312) estimates the amount of fuel consumption while the burner (20) is operating in the ON state and calculates the amount of VOC generated according to the estimated fuel consumption, the VOC generation calculation unit (312) may also install a sensor that measures fuel consumption in the burner (20) and calculate the amount of VOC generated while the burner (20) is in the ON state according to the fuel consumption measured by the installed sensor.

[0078] The VOC generation record section (314) records the amount of VOC generated by the VOC generation calculation section (312). At this time, since the burner (20) that heats the inside of the combustion chamber (100) of the thermal storage combustion oxidation device repeats the on and off operation, the VOC generation record section (314) records the amount of VOC generated during the period when the burner (20) operates in the on state.

[0079] Meanwhile, depending on the control operation of the burner usage control device (200), the operating range in which the burner (20) operates in the ON state may vary, and the amount of VOC generated corresponding to each operating range may also vary. Accordingly, the VOC generation recorder (314) can record the amount of VOC generated corresponding to each operating range of the burner (20) over time, as shown in FIG. 14.

[0080] The change rate calculation unit (316) calculates the rate of change of VOC generation amount for each on-state section of the burner (20) based on the amount of VOC generation recorded by the VOC generation record unit (314). At this time, the change rate calculation unit (316) can calculate the rate of change of VOC generation amount for each on-state section by calculating the ratio of the amount of VOC generation corresponding to the current on-state operating section to the amount of VOC generation corresponding to the previous on-state operating section of the burner (20).

[0081] The change rate transmission unit (318) transmits the change rate of VOC generation amount calculated by the change rate calculation unit (316) to the burner usage control device (200). At this time, the change rate transmission unit (318) may also transmit the change rate of VOC generation amount to the burner usage control device (200) if the change rate of VOC generation amount calculated by the change rate calculation unit (316) is greater than or equal to a set value. In this case, the burner usage control device (200) can adjust the time of power supply to the filament (112), the setting of the comparison temperature, etc., in response to the change rate of VOC generation amount transmitted by the change rate transmission unit (318).

[0082] FIG. 15 is a flowchart illustrating a VOC reduction monitoring method according to an embodiment of the present invention. The VOC reduction monitoring method according to an embodiment of the present invention can be performed by the VOC reduction monitoring server (300) shown in FIG. 13.

[0083] Referring to FIGS. 1 to 15, the VOC reduction monitoring server (300) stores fuel information including the fuel used by the burner (20), the fuel consumption per unit time at each heating temperature stage of the burner (20), and the amount of VOC generated corresponding to the unit consumption of fuel (S201). For example, when the burner (20) uses diesel fuel, the VOC reduction monitoring server (300) may classify the temperature range in which the burner (20) can generate heat into multiple stages, and store the amount of fuel consumed per unit time when generating heat at each classified stage, and the amount of VOC generated per unit time corresponding to each stage. At this time, the amount of VOC generated may be the amount of VOC generated per unit time that is statistically measured corresponding to each fuel, such as coal, gasoline, and diesel fuel.

[0084] The VOC reduction monitoring server (300) compares the VOC concentration per unit volume of the gas flowing into the combustion chamber (100) with the VOC concentration per unit volume of the gas discharged from the combustion chamber (100) (S203). To this end, the thermal storage combustion oxidation device preferably has a concentration measuring sensor (not shown) for measuring the VOC concentration in the pipe on the side where gas flows into the combustion chamber (100) and in the pipe on the side where gas is discharged from the combustion chamber (100), respectively. At this time, the VOC concentration values ​​measured in each pipe are transmitted to the VOC reduction monitoring server (300) through the burner usage control device (200).

[0085] The VOC reduction monitoring server (300) determines the VOC reduction efficiency of the thermal storage combustion oxidation device in response to the comparison result (S205). At this time, the VOC reduction monitoring server (300) can determine the VOC reduction efficiency of the thermal storage combustion oxidation device by calculating the ratio of the VOC concentration of the gas output from the combustion chamber (100) to the VOC concentration of the gas input into the combustion chamber (100).

[0086] The VOC reduction monitoring server (300) receives burner information including the time when the burner (20) is switched to the ON state and the average heat generation temperature while the burner (20) is in the ON state (S207). At this time, the VOC reduction monitoring server (300) receives information from the burner usage control device (200) regarding the time when the burner (20) is switched from the OFF state to the ON state and information regarding the time when the burner (20) is switched from the ON state to the OFF state, and can calculate the time the burner (20) operates in the ON state based on the received information. In addition, the VOC reduction monitoring server (300) receives information regarding the change in the heat generation temperature of the burner (20) while the burner (20) is operating in the ON state, and can calculate the average heat generation temperature during the time the burner (20) operates in the ON state accordingly.

[0087] The VOC reduction monitoring server (300) calculates the amount of fuel used while the burner (20) is in the ON state in response to the received burner information (S209). At this time, the VOC reduction monitoring server (300) estimates the amount of fuel used per unit time corresponding to the average heating temperature during the time the burner (20) is operated in the ON state based on the stored fuel information, and accordingly calculates the amount of fuel used during the operating time when the burner (20) is operated in the ON state.

[0088] The VOC reduction monitoring server (300) calculates the amount of VOC generated while the burner (20) is in the ON state in correspondence with the calculated fuel usage (S211). At this time, the VOC reduction monitoring server (300) can calculate the amount of VOC generated corresponding to the estimated fuel usage based on the stored fuel information. Here, although it has been explained that the VOC reduction monitoring server (300) estimates the fuel usage while the burner (20) is operating in the ON state and calculates the amount of VOC generated according to the estimated fuel usage, a sensor for measuring fuel usage may be installed on the burner (20), and the amount of VOC generated while the burner (20) is in the ON state may be calculated according to the fuel usage measured by the installed sensor.

[0089] The VOC reduction monitoring server (300) records the amount of VOC generated (S213). At this time, since the burner (20) that heats the inside of the combustion chamber (100) of the thermal storage combustion oxidation device repeats the on and off operation, the VOC reduction monitoring server (300) records the amount of VOC generated during the period when the burner (20) operates in the on state.

[0090] Meanwhile, depending on the control operation of the burner usage control device (200), the operating interval during which the burner (20) operates in the ON state may vary, and the amount of VOC generated corresponding to each operating interval may also vary. Accordingly, the VOC reduction monitoring server (300) can record the amount of VOC generated corresponding to each operating interval of the burner (20) over time.

[0091] The VOC reduction monitoring server (300) calculates the rate of change of VOC generation for each on-state period of the burner (20) based on the recorded VOC generation amount (S215). At this time, the VOC reduction monitoring server (300) can calculate the rate of change of VOC generation for each on-state period by calculating the ratio of the VOC generation amount corresponding to the current on-state period to the VOC generation amount corresponding to the previous on-state period of the burner (20).

[0092] The VOC reduction monitoring server (300) transmits the rate of change of the calculated VOC generation amount to the burner usage control device (200) (S217). At this time, the VOC reduction monitoring server (300) may also transmit the rate of change of the VOC generation amount to the burner usage control device (200) if the rate of change of the calculated VOC generation amount is greater than or equal to a set value. In this case, the burner usage control device (200) can adjust the time of power supply to the filament (112), the setting of the comparison temperature, etc., in response to the rate of change of the VOC generation amount transmitted by the VOC reduction monitoring server (300).

[0093] Although embodiments according to the present invention have been described above, they are merely illustrative and those skilled in the art will understand that various modifications and equivalent embodiments are possible therefrom. Accordingly, the scope of protection of the present invention should be defined by the following claims as well as their equivalents. Explanation of the symbols

[0094] 100: Combustion chamber 110, 140: Heat preservation solid 112: Filament 120: Heat preservation solid fixing device 122: Electrical supply terminal 130: Fixed bar 200: Burner usage control device 202: Status determination unit 204: Internal temperature measuring unit 206: Gas temperature measuring unit 208: On / Off Control Unit 210: Power Supply Control Unit 212: Off-switching control unit 300: VOC reduction monitoring server 302: VOC Concentration Comparison Section 304: Reduction Efficiency Judgment Section 306: Fuel information storage unit 308: Burner information receiving unit 310: Fuel consumption calculation unit 312: VOC generation calculation unit 314: VOC Generation Record 316: Change Rate Calculation Section 318: Rate of change transmission unit

Claims

Claim 1 A burner usage control device for controlling the use of a burner of a regenerative thermal oxidizer (RTO) having a heat-preserving solid provided within a combustion chamber, comprising: a state determination unit for determining the on / off state of the burner; an internal temperature measuring unit for measuring the internal temperature of the combustion chamber when the burner is in the off state; a power supply control unit for supplying power to a filament provided in the heat-preserving solid when the temperature measured by the internal temperature measuring unit is lower than a preset reference temperature; and a gas temperature measuring unit for measuring the temperature of a gas introduced into the combustion chamber. A burner usage control device comprising: an on-conversion control unit that switches the burner to an on state based on the difference between the internal temperature measured by the internal temperature measuring unit and the gas temperature measured by the gas temperature measuring unit; wherein the internal temperature measuring unit measures the internal temperature of the combustion chamber at a set period from the time the burner is switched to an off state, the gas temperature measuring unit measures the gas temperature at a set period from the time gas is introduced into the combustion chamber, and the on-conversion control unit calculates the average temperature between the gas temperature at the time gas is introduced into the combustion chamber and the internal temperature of the combustion chamber at the time gas is introduced into the combustion chamber, and controls the switching of the burner to an on state based on the amount of heat required to raise the gas temperature to a reference temperature from the time the gas temperature becomes the average temperature. Claim 2 delete Claim 3 A burner usage control device according to claim 1, further comprising: an off-switching control unit that switches the burner to an off state when the burner is in an ON state and the temperature measured by the gas temperature measuring unit becomes greater than or equal to a comparison temperature set to a value lower than a preset reference temperature. Claim 4 A burner usage control device according to claim 1, wherein the power supply control unit cuts off the power supplied to the filament when the temperature measured by the internal temperature measuring unit is higher than the rise temperature set to a value higher than the reference temperature. Claim 5 A burner usage control method performed by a burner usage control device of claim 1, comprising: a step of determining the on / off state of a burner; a step of measuring the internal temperature inside a combustion chamber when the burner is in an off state; a step of supplying power to a filament provided in a heat preservation solid when the measured internal temperature is lower than a preset reference temperature; and a step of measuring the temperature of a gas introduced into the combustion chamber. A burner usage control method comprising: a step of switching the burner to an ON state based on the difference between the internal temperature and the gas temperature; wherein the step of measuring the internal temperature measures the internal temperature of the combustion chamber at a set period from the point when the burner is switched to an OFF state, the step of measuring the temperature of the gas flowing into the combustion chamber measures the gas temperature at a set period from the point when the gas flows into the combustion chamber, and the step of switching the burner to an ON state calculates the average temperature between the gas temperature at the point when the gas flows into the combustion chamber and the internal temperature of the combustion chamber at the point when the gas flows into the combustion chamber, and controls the switching of the burner to an ON state based on the amount of heat required to raise the gas temperature to a reference temperature from the point when the gas temperature becomes the average temperature. Claim 6 delete Claim 7 A burner usage control method characterized by further including, in claim 5, a step of switching the burner to an off state when the burner is in an ON state and the gas temperature is greater than or equal to a comparison temperature set to a value lower than a preset reference temperature. Claim 8 A burner usage control method according to claim 5, wherein the step of controlling the power supply to the filament is characterized by supplying power to the filament when the internal temperature is lower than the reference temperature by an error range, and cutting off the power supplied to the filament when the internal temperature is higher than the reference temperature by an error range.

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