KR20200040601A - Large-capacity Brown Gas Production System with Improved backfire prevention and self-generating functions - Google Patents

Abstract

The present invention relates to a large-capacity brown gas generation system with improved backfire prevention and self-power generation functions and, more specifically, to a large-capacity brown gas generation system with improved backfire prevention and self-power generation functions, which complements uneven generation of a self-powered device using natural energy, and has an energy storage system (ESS) for stabilizing power supplied to a brown gas generator. In order to increase the overall energy efficiency of the brown gas generation system, the brown gas generation system includes: a self-powered auxiliary generator which is compensated by driving force of a rotary shaft in a brown gas backfire prevention device; and a burner that prevents backfire of brown gas by forming a flame source inside.

Description

Large-capacity Brown Gas Production System with Improved backfire prevention and self-generating functions}

The present invention relates to a brown gas generating system, and more particularly, to a large-capacity brown gas generating system with further improved backfire prevention and self-generation function.

Currently, gas combustion facilities that use gases such as LPG, LNG, acetylene, or Brown gas as a combustion source are installed and operated in various industrial fields. In particular, Brown gas is a gas obtained by electrolysis of water. Hydrogen is generated at the cathode, and oxygen is generated at the anode. At this time, the generated hydrogen and oxygen gases are collected without being separately collected, and the mixed gas has a hydrogen to oxygen content ratio of 2: 1.

In order to have a system for producing and operating such a large amount of brown gas, first, an electrolytic cell capable of generating a large-capacity brown gas must be provided, and a stable supply of power consumed during electrolysis to generate brown gas is not possible. It is essential. Accordingly, the applicant is equipped with a self-powered device using natural energy in Korean Patent Registration Publication No. 10-1749546 (Large-capacity Brown gas generation system having self-generation and automatic backfire prevention function, 2017.06.15.). A large-capacity Brown gas generating system capable of supplementing power consumption has been applied.

However, in order to generate brown gas at a large capacity, a lot of power must be continuously supplied, and the conventional brown gas generation system using a self-powered device using natural energy is not uniform in power generation according to the natural environment, and is consumed for generating a large amount of brown gas. There is a limitation that energy efficiency for power supply is deteriorated, and accordingly, operation cost is high.

In addition, in order to use the produced brown gas, the generated brown gas is used by transferring it to a burner that ejects brown gas to a melting furnace, a boiler, an incinerator, a cutter, etc., but the combustion speed of the brown gas is 200 m / s to 3,600 m / Since it reaches s, the flame propagation speed is more than 11 times faster than the flame propagation speed of LPG fuel or general welding gas such as acetylene. Therefore, when the supply of brown gas is reduced to a low pressure, a counter flow of flame occurs, and the counter flow of the flame generates an intense response in the transfer line, resulting in a safety accident such as equipment damage and explosion.

Accordingly, the applicant has been installed on the transfer line of the brown gas through Korean Patent Publication No. 10-2017-0050964 (automatic backfire prevention device for gas combustion facilities, 2017.05.11.) To provide spiral shaped wings to the outside. By driving the motor connected to the rotating shaft, the brown gas transferred by rotation of the shaft before rotation is blown to prevent backfire. However, there is a problem that the overall energy efficiency of the brown gas generating system is reduced due to the power consumed by the motor driven to prevent backfire of the brown gas, and the conventional brown gas burner has a gas outlet directly exposed to the outside. The flame is formed on the outside, and foreign substances such as fugitives and melts block the gas outlet or penetrate into the inside to block the supply of brown gas, or the flame reverses inside the burner, causing an accident such as an explosion or fire, Problems have arisen that foreign matter interferes with a flame source to extinguish the flame and reduce the duration of the burner.

Korean Patent Registration No. 10-1749546 (Large-capacity Brown gas generation system with self-generation and automatic backfire prevention function, 2017.06.15.) Korean Patent Publication No. 10-2017-0050964 (Automatic backfire prevention device for gas combustion equipment, 2017.05.11.)

The present invention was devised to solve the above problems, complements the uneven generation of the self-powered device using natural energy, and has an energy storage system (ESS) for stabilizing the power supplied to the brown gas generator. , In order to increase the overall energy efficiency of the brown gas generation system, the driving force of the rotating shaft in the backfire prevention device of brown gas is compensated to form a self-powered auxiliary generator and a flame source inside to prevent brown gas backfire. It provides a Brown gas generation system having a.

In order to solve the above problems, the present invention is a self-generation device for performing self-generation using natural energy including solar and wind power and an energy storage system for storing power generated by the self-generation device, the energy storage system It includes a brown gas generator that generates brown gas by receiving the stored power from the gas and an automatic flashback preventer that is installed on a gas transfer line that discharges brown gas from the brown gas generator to prevent backfire of the brown gas. Flashback arrestor is connected to a driving motor driven by receiving power from the energy storage system and a rotational shaft of the driving motor, and the brown gas flowing from the gas transfer line by a spiral-shaped blade formed on an outer circumferential surface on one side in the longitudinal direction. Rotating shaft to prevent backfire by blowing and Performing development is receiving the rotational force of the driving motor according to the rotation of the rotation shaft, and characterized by comprising an auxiliary generator to store electric power in the energy storage system.

In addition, the drive motor is formed so that the rotating shaft protrudes on both sides in the longitudinal direction, the driving shaft on one side is connected to the rotation shaft of the automatic flashback prevention device, and the other power shaft is connected to the generator to rotate in parallel with each other. It is characterized by.

In addition, the auxiliary generator is characterized in that for generating power by using the rotational force of the drive motor according to the braking of the rotation shaft of the automatic flashback preventer.

In addition, the automatic flashback preventer is installed on the connection portion of the drive motor and the generator to adjust the load applied to the drive motor according to the auxiliary generator and the load according to the transmission according to the operation of the drive motor. It characterized in that it further comprises a control unit for controlling the operation of the transmission and the drive motor.

In addition, the automatic backfire prevention device further includes a pressure gauge for measuring the ejection pressure at which the brown gas flowing from the gas transfer line is discharged to the outside, and the controller controls the ejection pressure of the brown gas measured at the pressure gauge to be constant. It is characterized by controlling the output of the drive motor.

At this time, the rotating shaft further comprises a sealing sleeve formed in a hollow tubular shape at one end portion in the longitudinal direction, and the outer diameter of the sealing sleeve is formed to have the same diameter as the inner diameter of the flashback preventing pipe. It is characterized by.

In addition, the brown gas generating system further includes a brown gas burner connected to the automatic backfire prevention device and a gas discharge line to burn brown gas to form a flame, and the burner is formed of a hollow tube inside, in the longitudinal direction. It is connected to the inlet pipe through which the brown gas is introduced into one side of the furnace, and a gas flow passage including the gas outlet configured to discharge the introduced brown gas to the other side in the longitudinal direction and the gas flow passage are accommodated therein. A portion of the gas flow path is formed in the front end portion in the discharge direction of the discharge path, and is formed to surround the exposed outer surface of the gas flow path, and includes a housing formed to seal the front end portion. The brown gas discharged from the gas outlet of the gas flow path in the front end in the moving direction is ignited. And a control point for generating a flame, characterized by having the flashback prevention structure formed to be positioned inside the front end portion.

At this time, the backfire prevention structure is characterized in that the front end of the housing is formed to protrude a predetermined length (L) from the gas outlet of the gas flow path toward the discharge direction of the brown gas.

In addition, the backfire prevention structure is characterized in that the inner diameter (D) of the inner circumferential surface of the front end of the housing is formed to gradually increase toward the front.

In addition, the backfire prevention structure is characterized in that the inner diameter D of the inner circumferential surface of the front end of the housing is 1.5 to 1.7 times larger than the length L spaced forward from the gas outlet.

In addition, the brown gas burner is inserted into the front end of the housing and further includes a backfire prevention cap formed to have the backfire prevention structure, wherein the backfire prevention cap may be made of a heat resistant material.

The present invention according to the above configuration has an advantage of improving the efficiency of generating brown gas by supplying stable power to the brown gas generating device through an energy storage system that stores power generated from a self-powered device using natural energy.

In addition, the present invention generates the remaining power as electric power through an auxiliary generator that generates power by using the rotational force of a rotating shaft of an automatic flashback preventer to prevent backfire of brown gas, and supplies it to the energy storage system, thereby providing the overall energy efficiency of the brown gas generating system. It has the effect of increasing the melting.

In addition, the present invention can provide a burner having a structure capable of preventing backfire caused by foreign matters itself, thereby improving safety due to backfire of brown gas.

1 is a schematic diagram showing a Brown gas generating system according to an embodiment of the present invention.
Figure 2 is a schematic diagram showing a Brown gas generator according to an embodiment of the present invention.
3 is a perspective view showing an electrolyzer of a Brown gas generator according to an embodiment of the present invention.
Figure 4 is a perspective view showing an automatic flashback preventer according to an embodiment of the present invention.
Figure 5 is a block diagram showing an automatic flashback preventer according to an embodiment of the present invention.
Figure 6 is a cross-sectional view showing a flashback prevention unit of the automatic flashback arrester according to an embodiment of the present invention.
7 is a perspective view of a rotating shaft according to an embodiment of the present invention.
8 is a block diagram for explaining a brown gas generation system according to an embodiment of the present invention.
Figure 9 is a flow chart showing the operation of the automatic flashback preventer according to an embodiment of the present invention.
10 is a cross-sectional view showing a brown gas burner according to an embodiment of the present invention.
11 is a view showing a cooling connector of a brown gas burner according to an embodiment of the present invention.
12 is a partially enlarged view showing a front end of FIG. 10;
13 is a cross-sectional view showing a brown gas burner according to another embodiment of the present invention.
14 is a cross-sectional view showing a flashback prevention cap according to FIG. 12;
15 is an exemplary view showing the operation of the brown gas burner according to an embodiment of the present invention.

The present invention can be applied to various changes and may have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

When an element is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected to or connected to the other component, but other components may exist in the middle. It should be.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains.

Terms such as those defined in a commonly used dictionary should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

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

The accompanying drawings are only examples shown in order to describe the technical spirit of the present invention in more detail, so the technical spirit of the present invention is not limited to the form of the accompanying drawings.

1 is a schematic diagram showing a brown gas generating system according to an embodiment of the present invention. Referring to FIG. 1, the large-capacity brown gas generating system 1000 of the present invention includes a self-powered device 100 and an energy storage system 200. ), Brown gas generator 300 and automatic flashback preventer 400, Brown gas burner 500 and the gas separation tank 600 to separate and store the hydrogen gas and oxygen gas constituting the Brown gas to be configured You can.

The self-powered device 100 is configured to store power in the energy storage system 200 by performing self-generation using natural energy including solar light and wind power, and equipped with a solar panel to receive sunlight. It may include a photovoltaic device 110 for generating electric power received and an impeller for rotating using wind power, and a wind power generator 120 for generating driving power rotating according to wind power as electric power. The solar power generation device 110 and the wind power generation device 120 may be modified in various shapes and structures.

At this time, as the self-generation device 200 performs self-generation using natural energy such as wind power, solar power, and the like, there is a limitation that it cannot maintain a constant amount of power generation. Therefore, the brown gas generating system 1000 of the present invention is provided with the energy storage system 200 to store electric power generated from the self-powered device 200, and when the brown gas generating device 300 is operated By supplying power to the power generation, the limitation of the self-powered device 200 can be overcome.

The energy storage system 200 is a system for selectively storing power generated from the self-generation device 200 and selectively using it at a necessary time. It may be made of a substation for converting the power and a storage unit for storing the received power, the ratio of power generated from the self-powered device 200 of the amount of power supplied to the Brown gas generator 300 is constant It is preferable to perform a stable supply of power applied to the self-power generation device 200 by adjusting not to exceed a value or more.

2 is a schematic diagram showing a brown gas generator according to an embodiment of the present invention. Referring to FIG. 2, the brown gas generator 300 receives power from the energy storage system 200 and is internally. The electrolyzer 310 for producing brown gas by electrolysis of the electrolytic solution accommodated in the water tank and the water tank 320 in which water supplied to the electrolyzer 310 is stored, receives the brown gas generated from the electrolyzer 310, and the electrolyzer A washing tank 330 for washing the electrolyte mixed in the brown gas generated in 310 and a cooling device 350 for cooling the electrolyte supplied from the water tank 320 and the electrolyte supplied to the electrolytic cell 100, or It may be configured to include a heat exchanger 340 for maintaining the electrolyte to be drained from the electrolytic cell 100 at a constant temperature. At this time, the electrolytic solution may be composed of a mixed solution in which the electrolyte is mixed so that an electric current flows through water that generates electrolysis and hydrogen and is electrolyzed inside the electrolyzer 100, wherein the electrolyte does not react during electrolysis and only mixed water It is preferably made of a material capable of decomposing to produce hydrogen gas and oxygen gas. At this time, it is preferable that the heat exchanger 340 maintains the electrolyte solution supplied to the electrolytic cell 100 at a temperature of 60 to 70 degrees Celsius.

The electrolytic cell 310 includes an electrode plate 311 and an electrode rod 312 connected to flow different currents by receiving power from the energy storage system 200 therein, and the electrode plate 311 and the electrode rod 312 ), The electrolytic solution accommodated in the electrolytic cell 310 is electrolyzed by the current applied to the electrolytic cell, and brown gas in which hydrogen gas and oxygen gas are mixed is generated. In addition, the electrolyte tank 310 may include a sludge discharge unit 313 through which the electrolyte mixed with the electrolytic solution is discharged, and a sludge tank 314 in which the discharged electrolyte is stored.

In addition, the electrolytic cell 310 is disposed in a pair, the electrolyte is supplied to the inside of the electrolytic cell 310 by a water supply head H1 installed at an upper portion between the pair of electrolytic cells 310, and the lower part thereof The electrolyte is drained by the drain header (H2) installed in the. At this time, a water supply line (L1) is connected between the water supply header (H1) and the heat exchanger 340, a drain line (L2) is connected between the drain header (H2) and the heat exchanger (340), , The water supply line (L1) and the drain line (L2) is installed with a metering pump to control the flow rate of the electrolyte that is supplied or drained from the electrolytic cell 310, the water supply line (L1) is from the water supply header (H1) Branched and connected to the top of each electrolyzer 100, the drain line (L2) may be branched from the drain header (H2) may be connected to the bottom of each electrolyzer 100.

The water tank 320 stores water therein, and is connected to the heat exchanger 340 through a cooling water line L3 to supply cooling water to the heat exchanger 340, wherein the cooling water line L3 The cooling device 350 is installed to cool the water supplied from the water tank 320 and the cooled cooling water is used for heat exchange of the heat exchanger 340. In addition, the water tank 320 is connected to a water supply line (L4) for supplying water used for washing brown gas to the washing tank 330 by a metering pump, and the water supply line (L4) is the washing tank An electrolytic solution line (L5) for supplying the electrolytic solution to the electrolytic cell 310 through 330 is connected to supply water mixed with the electrolytic solution in the washing tank 330 through the water supply header H1 of the electrolytic cell 310. You can.

The washing tank 330 separates the brown gas and the electrolytic solution, and the brown gas generated in the electrolytic cell 310 is collected and washed in the gas inlet line L6 flowing with the electrolytic solution and the washing tank 330 The gas transfer line (L7) to which the brown gas from which the electrolyte is separated is transferred is connected. At this time, the washing tank 330 is equipped with a water level sensor to detect the lack of water stored in the tank to operate the metering pump installed in the water supply line (L4) to receive water from the water tank (320).

In addition, the washing tank 320 is stored with the diluted electrolytic solution according to the washing of the brown gas, and the electrolyte line that supplements the electrolytic solution by supplying the electrolytic solution stored inside the washing tank 320 to the electrolytic cell 100 (L5) is provided, the electrolyte line (L5) is connected to the water supply line (L1) may be connected to the inside of the electrolytic cell 100 through the water supply header (H1).

3 is a perspective view showing a large-capacity electrolytic cell and a small-capacity electrolytic cell used in the conventional Brown gas generator according to an embodiment of the present invention, FIG. 3 (a) shows an electrolytic cell according to an embodiment of the present invention Figure 3 (b) shows a small-capacity electrolytic cell of a conventional Brown gas generator. At this time, if the size of the electrolytic cell is arbitrarily increased to generate a large-capacity brown gas, the risk of backfire of the brown gas is increased, and as shown in FIG. 3 (b), conventionally, a large-capacity brown gas is generated. In order to do so, there was a limit to install a small amount of electrolytic cells in large quantities. However, the brown gas generator of the present invention, as shown in Figure 3 (a), the brown gas generated in the electrolytic cell 310 is discharged through the safety valve 420 installed on the top of the electrolytic cell 310 When the pressure at the upper portion exceeds a certain value or more, by discharging the gas to the outside, safety of the inner width of the electrolytic cell 310 can be secured even if backfire occurs in the line from which the brown gas is discharged. At this time, the safety valve 420 is configured to form a part of the automatic flashback preventer 400 of the present invention, and will be described in more detail with reference to the drawings.

4 is a perspective view showing an automatic flashback preventer 400 according to an embodiment of the present invention, and FIG. 5 is a configuration diagram showing an automatic flashback preventer 400 according to an embodiment of the present invention. And Referring to Figure 5, the automatic flashback preventer 400 is installed on the gas transfer line (L7) to which the brown gas is discharged from the brown gas generator 300 to prevent backfire of the brown gas, the It is connected to a driving motor 430 driven by receiving electric power from the energy storage system 200 and a rotating shaft 431 of the driving motor 430 by a spiral blade 411a formed on an outer circumferential surface of one side in the longitudinal direction. A backfire prevention unit 410 including a rotation shaft 411 to prevent backfire by blowing brown gas flowing from the gas transfer line L7 and the driving motor 430 according to the rotation of the rotation shaft 411 Is authorized to It may be configured to include an auxiliary generator 450 that performs power generation and stores the generated power in the energy storage system 200.

At this time, the driving motor 430 may be connected to the rotating shaft 431 and the rotating shaft 411 through a connecting member 416, wherein the connecting member 416 is the driving motor 430, such as a belt, a chain ) Can be connected by any means to connect the rotation shaft 431 and the rotation shaft 411 in parallel, preferably, the drive motor 430 protrudes from both sides of the rotation shaft 431 in the longitudinal direction. It is formed, so that the driving shaft 431a on one side is connected to the rotation shaft 411 of the automatic flashback prevention unit 410, and the other power shaft 431b is connected to the auxiliary generator 450 so as to rotate in parallel with each other. It is formed, the drive motor 430 and the rotation shaft 411 forms a concentric shaft to minimize the loss of power generated during rotation of the drive motor 430 and the rotation shaft 411. At this time, the driving motor 430 and the auxiliary generator 450 are according to an example for performing an object to be solved without departing from the technical gist of an embodiment of the present invention, and the driving motor 430 Depending on the operation, it can be modified to simultaneously perform the role of a drive motor and an alternator.

The brown gas generation system 1000 of the present invention according to the above configuration more efficiently uses the consumption of power consumed to rotate the rotation shaft 411 of the flashback preventer 400, and the rotation shaft ( When the operation of the driving motor 430 that rotates 411 is stopped, the kinetic energy of the rotating shaft 411 that remains may be generated as electrical energy. That is, the auxiliary generator 450 may perform power generation braking that generates power by using the rotational force of the driving motor 430 according to the braking of the rotation shaft 411 of the automatic flashback preventer 400. this?? The braking of the rotating shaft 411 means a driving in which the driving of the driving motor 430 is stopped and decelerated and rotated by the rotational force remaining in the rotating shaft 411, wherein the driving motor 430 is powered The power is generated by using the rotational force of the rotating shaft 411 without being supplied, and the generated power is stored in the energy storage system 200.

In addition, the automatic backfire prevention device 400 is installed between the gas transfer line (L7) and the gas discharge line (L8), the backfire prevention portion through the gas discharge line (L8) connected to the backfire prevention portion 410 The brown gas blown by the rotating shaft 411 of 410 is discharged to the brown gas burner 500.

At this time, when the gas discharge line (L8) has one side connected to the brown gas burner 500 and the other side has a backfire in the burner 500, when the pressure inside the gas discharge line (L8) increases above a threshold value It is connected to a safety valve 420 for generating internal gas and flame to the outside, and the flashback preventing unit 410 may be connected to the gas discharge line L8 through a bypass circuit 440.

The bypass 440 is configured to prevent the backfire generated from the brown gas burner 500 from being directly connected to the deterioration prevention unit 410, by inducing the flow of the backfired flame to bypass through the bypass 440. In the case of brown gas having a fast flame propagation speed, the flashback prevention unit 410 is induced by inducing discharge to the outside through the safety valve 420 directly connected to the brown gas burner 500 rather than the flashback prevention unit 410. ) It can prevent backfire of the flame inside. At this time, the safety valve 420 is connected to the gas discharge line L8 directly connected to the brown gas burner 500, and when backfire occurs in the brown gas burner 500, the gas discharge line L8 accordingly When the internal pressure is sensed, and when the internal pressure of the gas discharge line L8 increases above a threshold value, it operates to discharge internal gas and flame to the outside, and when the internal pressure of the gas discharge line L8 is lower than the threshold value The brown gas burner 500 and the backfire prevention unit 410 are connected, but when the internal pressure of the gas discharge line L8 becomes higher than the threshold, it is opened to be connected to the outside to discharge the internal gas or flame to the outside. To prevent backfire of the brown gas.

At this time, the automatic flashback preventer 400 may further include a control unit 460 for controlling and controlling the amount of air blown by the flashback preventing unit 410, and the control unit 460 of the flashback preventing unit 410 The rotation speed of the driving motor 430 and the power applied to the driving motor 430 are controlled to adjust the rotation amount of the rotation shaft 411.

6 is a cross-sectional view showing a flashback preventing part of an automatic flashback preventer according to an embodiment of the present invention, and FIG. 7 is a perspective view of a rotating shaft according to an embodiment of the present invention. Referring to FIGS. 6 and 7, the The backfire prevention unit 410 is provided inside the box-shaped or cylindrical backfire prevention pipe 412 and the backfire prevention pipe 412, which are connected to the gas transfer line L7 and the gas discharge line L8, and have one side. The drive motor 430 is connected to the rotating shaft and rotates, and comprises a rotating shaft 411 with a spiral blade 411a formed on the other side. At this time, the conventional flashback prevention unit 410 is in contact with the outer circumferential surface of the blade 411a formed on the other side of the rotary shaft 411 so that the brown gas discharged to the bypass 430 through the rotary shaft 411 is not backfired Although a sealing pipe made of Teflon is sealed to seal the inside, the outer circumferential surface of the sealing pipe is worn out as the rotating shaft 411 is operated for a long time, and gas or flame refluxed along the outer circumferential surface of the worn sealing pipe is introduced into the inside. There was a problem of inflow. In order to prevent the problem that the Teflon material is worn on the metal and deteriorates durability, the rotating shaft 411 of the present invention has a part of the wing portion 411a formed on the outer circumferential surface along the other side in the longitudinal direction. By further comprising a rotating sleeve (411b) formed in a hollow cylindrical inside to cover (411a), by replacing the sealing tube made of the Teflon material, the problem of durability degradation due to the wear of the sealing tube made of Teflon material Solved.

At this time, the outer diameter of the rotary sleeve 411b is formed to have the same diameter as the inner diameter of the flashback preventing pipe 412, the flashback preventing pipe 412 corresponds to the rotary sleeve 411b of the rotary shaft 411 A bearing 414 provided to surround the outer circumferential surface of the rotary sleeve 411b and a sealing member 415 provided on the outer surface of the bearing 414 to seal the lubricant inside the bearing 414 is formed At the same time, to prevent backfire by sealing the gap into which the backfire flows into the inside, and to prevent the blade 411a of the rotating shaft 411 from coming into contact with other parts inside the backfire prevention portion 410, the rotation shaft ( By surrounding the outer circumferential surface of the rotating sleeve 411b of 411), vibration due to rotation of the rotating shaft 411 can be prevented.

In addition, the backfire prevention unit 410 is a refrigerant for cooling the heat due to the rotation of the rotation shaft 411 and the backfire of the brown gas, the backfire prevention pipe to flow along the outer peripheral surface of the backfire prevention pipe 412 It comprises a cooling housing (413) made to surround the outer circumferential surface of (412), the cooling housing 413 is a cooling water passage (413b) and the backfire prevention pipe (coolant inlet and outlet on both sides in the longitudinal direction) 412) Including the cooling water flow pipe 413a formed to flow the refrigerant on the outer circumferential surface, the rotating sleeve 411b of the rotating shaft 411 by the high-speed rotation of the rotating shaft 411 in the flashback preventing unit 410 And cooling the heat generated by friction between the bearing 414 and the sealing member 415, so that the inside of the flashback prevention unit 410 is maintained at a constant temperature. At this time, the refrigerant may be made of various materials including air or cooling water, and preferably connected to a cooling device 350 in the Brown Gas generator 300 to supply cooling water flowing from the water tank 320 Can receive

8 is a configuration diagram for explaining the flow of power of the Brown gas generating system according to an embodiment of the present invention, Figure 9 is a flow chart showing the operation of the automatic flashback preventer according to an embodiment of the present invention, Referring to 8 and 9 will be described in more detail with respect to the power generation and operation in the large-capacity Brown gas generating system 1000 of the present invention according to the drive motor 430 and the auxiliary generator 450.

The Brown gas generation system 1000 stores the power generated by the self-generation device 100 in the energy storage system 200 and supplies it to the electrolytic cell 310 and the automatic backfire prevention device 400 of the Brown gas generation device 300. . At this time, as the large amount of power is consumed to generate a large-capacity brown gas in the electrolytic cell 310, and the constant power must be stably supplied for the production of stable brown gas in the electrolytic cell 310, the energy storage system 200 There is a limitation in that the brown gas generator 300 must be operated in consideration of power consumed compared to stored energy. Accordingly, the present invention provides power generated by using the remaining kinetic energy in the rotating shaft 411 of the automatic flashback preventer 400 that is operated by receiving power from the energy storage system 200 to the energy storage system 200 By storing in, it reduces the overall power consumption of the Brown gas generating system 1000 and allows it to be operated for a longer period of time.

At this time, the automatic flashback preventer 400 is installed on the connecting portion of the driving motor 430 and the auxiliary generator 450, the variable speed variable variable load applied to the driving motor 430 according to the auxiliary generator 450 470 and a control unit 460 that controls the operation of the transmission 470 and the driving motor 430 to adjust the load according to the auxiliary generator 450 according to the operation of the driving motor 430 further includes When the drive motor 430 is operated, the transmission 470 maintains a neutral state so that the drive motor 430 and the auxiliary generator 450 are not connected, and the drive motor 430 When the operation is stopped, by connecting the drive motor 430 and the auxiliary generator 450, to perform power generation by using the rotational force according to the braking of the rotation shaft 411 connected to the rotation shaft of the drive motor 430 It works.

At this time, the driving motor 430 should be operated so that the pressure discharged to the brown gas burner 500 through the automatic flashback preventer 400 is maintained, and the brown gas is burned up to the brown gas burner 500. It is preferable to be driven so as to control the amount of air blown by the rotary shaft 411 in consideration of the tube friction loss according to the length, diameter and inner surface roughness of the gas discharge line L8 to be transferred, and the automatic flashback preventer 400 Is provided in the gas transfer line (L7) or the gas discharge line (L8), respectively, the inlet pressure (P1) of the brown gas flowing from the gas transfer line or brown gas introduced from the gas transfer line is discharged to the outside Further comprising a pressure gauge 480 for measuring the pressure (P2), the control unit 460 is configured so that the ejection pressure (P2) of the brown gas measured by the pressure gauge (480) is constant The output of the motor 430 can be controlled.

In addition, as illustrated in FIG. 9, when the control method of the driving motor 430 according to the ejection pressure P2 of the brown gas is described in detail, the driving motor 430 as the brown gas generating device 300 is operated When the motor operation step (S100) and the motor control step (S200) to control the driving motor 430 so that the ejection pressure (P2) of the brown gas is kept constant when the operation is stopped (S100) It comprises a power generation braking step (S300) for storing the power generated by the auxiliary generator 450 in the energy storage system 200 using the residual rotational force of the rotating shaft 411, wherein the motor control step ( S200) when the ejection pressure (P2) is less than the threshold pressure (b) set to discharge at a constant pressure from the brown gas burner 500 in consideration of the tube friction loss in the gas discharge line (L8), the drive motor ( 430) to accelerate the rotation shaft (41 1) to increase the amount of air blowing (S210 ?? S211), and when the ejection pressure (P2) is higher than the critical pressure (b), the drive motor 430 is decelerated to blow the amount of air in the rotating shaft 411 It can be operated to reduce (S220 ?? S221). At this time, the pressure gauge 480 is installed in the gas transfer line (L7) flowing into the automatic flashback preventer 400, taking into account the amount of air blown by the rotating shaft 411, the inflow pressure of brown gas flowing in (P1) ) May be made to control the operation of the driving motor 430, and the gas discharge line L8 is measured to measure the discharge pressure P2 discharged through the automatic flashback preventer 400 for intuitive determination. It is preferably installed and configured to reduce prediction and calculation errors.

10 is a cross-sectional view showing a brown gas burner according to an embodiment of the present invention, as shown in FIG. 10, the brown gas generation system 1000 of the present invention is an automatic backfire prevention device 400 and a gas discharge line (L8) ) Is further connected to a brown gas burner 500 to form a flame by burning the discharged brown gas, wherein the brown gas burner 500 is formed of a hollow tube inside, the one side in the longitudinal direction Gas flow path 521 including an inlet pipe 510 through which brown gas flows, a gas outlet 521a connected to the inlet pipe 510 and formed to discharge the brown gas flowing into the other side in the longitudinal direction, the It is formed to surround the outer surface of the gas flow path 521 and is provided on the other side opposite to the gas outlet 521a provided on one side of the housing 520 and the gas flow path 521 to accommodate the gas flow path therein. In the housing It may be made, including cooling the connector 530 is the sum.

The inlet pipe 510 is a pipe through which the brown gas generated by the brown gas generator 300 flows, including a bent portion 511 that is bent several times in a zigzag manner, and introduced into the gas flow path 520 This is a configuration to ensure that the brown gas flows while maintaining a constant speed. When the inflow speed of the inflowing brown gas is high, the speed decreases due to the increase in the distance and friction through which the brown gas passes through the inlet pipe 510, resulting in a constant speed. The effect of flowing into the gas flow path 521 is further increased.

The housing 520 is formed in a hollow tube shape to accommodate the gas flow path 521 therein, and is coupled to the inlet tube 510 through the cooling connector 530 on one side in the longitudinal direction. , The other side in the longitudinal direction is formed so that a part of the gas flow path 521 is exposed to the outside, surrounding the outer circumferential surface of the gas flow path 521 exposed to the outside, and the front end portion 522 is sealed on the other side in the longitudinal direction. It is formed as possible. At this time, in the related art, the gas outlet 521a of the gas flow path 521 is formed only partially exposed at the front end of the housing 520, where foreign matter or water vapor, etc., generated during the use of the conventional brown gas burner form a flame. There was a problem that it interfered with or blocked the gas outlet 521a or penetrated into the burner to cause backfire in the burner.

Accordingly, in order to solve the above problems, the brown gas discharged from the gas outlet 521a of the gas flow path 521 is ignited at the front end portion 522 in the longitudinal direction of the housing 520 to generate a flame. The point to be characterized by having a backfire prevention structure formed inside the front end portion 522 of the housing 520, the backfire prevention structure will be described in more detail with reference to the drawings below.

FIG. 11 is a view showing the connector of the brown gas burner according to FIG. 12. Referring to FIGS. 10 and 11, the cooling connector 530 of the brown gas burner 500 has the housing in the brown gas moving direction ( 520 is connected to the rear of the inlet pipe 510 and the gas flow path connector 531 connecting the gas flow path 521 of the housing 520 and the gas flow path connection port 531 is formed outside the housing ( 520) may include a refrigerant inlet 532 and a refrigerant outlet 533 for introducing and discharging the refrigerant into the interior.

At this time, the housing 520 is provided therein and connected to the refrigerant inlet 532 of the cooling connector 530, but extends in the longitudinal direction along the gas flow path 521, the front end of the housing 520 ( Inside the 522) may further include a refrigerant flow path 523 for discharging the refrigerant flowing from the refrigerant inlet 532.

FIG. 12 is a partially enlarged view showing the front end portion of the brown gas burner of FIG. 10. Referring to FIG. 12, the backfire prevention structure of the brown gas burner of the present invention will be described in more detail. The front end 522 of the housing 520 is formed to protrude a predetermined length (L) forward from the gas outlet 521a of the gas flow path 521 so that the gas outlet 521a of the housing 520 It is preferably formed to be provided on the inside of the front end portion 522, wherein the flame generated by ignition of the brown gas discharged from the gas outlet 521a of the gas flow path 521 has a gradually larger diameter toward the front. As it is formed, the front end portion 522 of the housing 520 is formed such that the inner diameter D of the inner circumferential surface 522a gradually increases toward the front, and brown discharged from the gas outlet 521a It is preferably formed so as not to contact with the flame generated is ignited.

At this time, the pressure of the brown gas discharged from the gas flow passage 521 is generally such that the flame generated by ignition of the brown gas discharged from the gas flow passage 521a does not cause backflow into the gas flow passage 522. The pressure (typically 1.5 bar) should be discharged to maintain at all times, and more preferably, the pressure of the brown gas discharged for constant performance of the brown gas burner 500 should be kept constant. Accordingly, the path of the flame discharged from the gas outlet 521a is also kept constant, and the backfire prevention structure has an inner diameter (D) of the inner circumferential surface at the front end 522 of the housing 520 according to the discharge pressure of the brown gas. ) Is a front end portion 522 of the housing 520 is formed 1.5 ~ 1.7 times larger than the length (L) spaced forward from the gas outlet (521a) in the path of the flame discharged from the gas outlet (521a) The inner surface of the front end portion 522 of the housing 520 may be made to not always contact.

13 is a cross-sectional view showing a brown gas burner according to another embodiment of the present invention, and FIG. 14 is a cross-sectional view showing a backfire prevention cap according to FIG. 12, and with reference to FIGS. 13 and 14 to prevent backfire of the present invention The brown gas burner 500 provided with the backfire prevention cap 540 having the structure will be described in detail.

The backfire prevention structure according to another embodiment of the present invention is inserted into the front end portion 522 of the housing 520 of the brown gas burner 500 without manufacturing the backfire prevention structure so as to have the backfire prevention structure. By inserting and coupling the flashback prevention cap 540 having the can be made more easily the production of the housing 520. At this time, the backfire prevention cap 540 is preferably made of a heat-resistant material that does not deform the heat caused by the ignition of the brown gas.

The backfire prevention cap 540 is made of a diameter smaller than the diameter of the fixing portion 541 and the gas outlet 521a to which the gas outlet 521a of the gas flow passage 521 is partially inserted and coupled to one side. A gas discharge passage 542 that discharges the brown gas discharged from (521a) to the front and a brown flame discharged from the gas discharge passage 542 that is ignited to prevent an ignition point of a flame generated therein. It may be made to include a tip portion 543 having.

At this time, the front end portion 543 extends a predetermined length (L) forward from the gas discharge path 542, but is made of a hollow tapered shape, but the inner diameter D of the front end portion 543 is the gas discharge path ( It is preferably formed to gradually increase from 542 toward the front, wherein the inner diameter (d) of the gas discharge path 553, the inner diameter (D) of the tip portion 543 and the tip portion 543 extend forward. The length L is the inner diameter of the gas outlet 521a of the brown gas burner 500, the diameter D at the front end 522 of the housing 520, and the front end 522 extends forward. It is preferable to consist of a reduction ratio corresponding to the formed length L.

15 is an exemplary view showing the operation of the brown gas burner according to an embodiment of the present invention, the brown gas burner 500 of the present invention having the above-described flashback prevention structure, as shown in Figure 15, the gas The origin of the flame generated by the ignition of the brown gas discharged through the flow path 521 is formed inside the front end 522 of the housing 520, and the front end 522 of the housing 520 is the flame. (F) by forming the inside of the enveloping point and protecting the flame, the brown gas burner 500 can be continuously used without extinguishing the flame F by external interference, and the brown gas burner 500 of the present invention Even if the scattering material (E) generated during melting, incineration, and cutting, the melt (N), and the water vapor (H) generated along the outer circumferential surfaces of the burner come close to the inside of the front end 522 of the housing 520, the heat Foreign matter and water vapor are pushed by pressure. As it prevents backfire caused by penetration into the inside of the brown gas burner 500 or blocking the gas outlet 521a, it has excellent durability and can continuously work without interrupting work, thereby reducing work time and cost. There is.

The present invention is not limited to the above-described embodiments, and the scope of application is various, of course, and various modifications can be implemented without departing from the gist of the present invention as claimed in the claims.

1000: Brown gas generation system
100: self-power generation system 110: solar power generation device
120: wind power generator
200: energy storage system
300: Brown gas generator
310: electrolytic cell 311: electrode plate
312: electrode rod 313: sludge discharge unit
314: sludge tank
320: water tank 330: washing tank
340: heat exchanger 350: cooling device
400: automatic flashback arrester
410: backfire prevention unit
411: rotating shaft 411a: wings
411b: Rotary sleeve 412: Flashback prevention tube
413: cooling housing 414: bearing
415: sealing member 416: connecting member
420: Safety valve 430: Driving motor
440: bypass 450: auxiliary generator
460: Control unit 470: Transmission
480: pressure gauge
500: Brown Gas Burner
510: inlet pipe 511: bent
520: housing 521: gas flow path
521a: gas outlet 522: front end
523: refrigerant flow path
530: Cooling connector 531: Gas flow path connector
532: refrigerant inlet 533: refrigerant outlet
540: backfire prevention cap 541: fixing part
542: gas discharge furnace 543: tip
H1: Water supply header H2: Drainage header
L1: Water supply line L2: Drainage line
L3: Cooling water line L4: Water supply line
L5: electrolyte line L6: gas inlet line
L7: Gas transfer line L8: Gas discharge line
P1: Inlet pressure P2: Discharge pressure

Claims (11)

A self-power generation device that performs self-generation using natural energy including solar power and wind power;
An energy storage system that stores electric power generated by the self-powered device;
A brown gas generator that generates brown gas by receiving stored power from the energy storage system; And
An automatic backfire prevention device installed on a gas transfer line from which the brown gas is discharged from the brown gas generator to prevent backfire of the brown gas;
Including,
The automatic flashback preventer
A driving motor that is operated by receiving power from the energy storage system,
A rotation shaft connected to the rotation axis of the drive motor to prevent backfire by blowing brown gas flowing from the gas transfer line by a spiral-shaped blade formed on one outer circumferential surface in the longitudinal direction, and
An auxiliary generator that receives the rotational force of the drive motor according to the rotation of the rotating shaft to perform power generation and stores the generated power in the energy storage system,
A large-capacity brown gas generation system with improved backfire prevention and self-power generation, characterized in that it comprises a.
According to claim 1,
The drive motor is characterized in that the rotation shaft is formed to protrude on both sides in the longitudinal direction, the drive shaft on one side is connected to the rotation shaft of the automatic flashback preventing device, and the other power shaft is connected to the generator to rotate with each other in parallel. Large capacity brown gas generation system with improved backfire prevention and self-generation function.
According to claim 2,
The auxiliary generator is a large-capacity brown gas generation system with improved backfire prevention and self-power generation, characterized in that power generation is performed by using the rotational force of the drive motor according to braking of the rotation shaft of the automatic backfire prevention device.
According to claim 3,
The automatic flashback preventer,
A transmission that is installed on the connecting portion of the drive motor and the generator to vary the load applied to the drive motor according to the auxiliary generator, and
Control unit for controlling the operation of the transmission and the drive motor to adjust the load according to the transmission according to the operation of the drive motor,
A large-capacity brown gas generation system with improved backfire prevention and self-power generation, further comprising a.
According to claim 4,
The automatic backfire prevention device is a pressure gauge that measures the ejection pressure of the brown gas flowing out of the gas transfer line to the outside,
Further comprising,
The control unit controls the output of the driving motor so that the ejection pressure of the brown gas measured by the pressure gauge is constant.
According to claim 1,
The rotating shaft is a sealing sleeve formed in a tubular shape with a hollow inside at one end in the longitudinal direction,
It is made to include more,
A large-capacity brown gas generation system with improved backfire prevention and self-power generation, characterized in that the outer diameter of the sealing sleeve is formed to have the same diameter as the inner diameter of the backfire prevention tube.
The method of claim 5,
The brown gas generation system is connected to the automatic backfire prevention device and the gas discharge line to burn brown gas to form a flame brown gas burner;
Further comprising,
The burner,
A gas flow path including a gas outlet that is formed of a hollow pipe, connected to an inlet pipe through which the brown gas is introduced in one side in the longitudinal direction, and formed to discharge the introduced brown gas in the other side in the longitudinal direction, and
A housing formed to receive the gas flow path therein, but a part of the gas flow path is exposed at the front end in the discharge direction of the brown gas, and is formed to cover the outer surface of the exposed gas flow path so that the front end is sealed.
It consists of,
The housing is characterized in that it has a backfire prevention structure in which a front end portion in the moving direction of the brown gas is formed so that the point at which the brown gas discharged from the gas outlet of the gas flow path is ignited to generate a flame is located inside the front end portion. Large capacity brown gas generation system with improved backfire prevention and self-generation function.
The method of claim 7,
The backfire prevention structure is a large-capacity brown gas with improved backfire prevention and self-power generation, characterized in that the front end of the housing is formed to protrude a predetermined length (L) from the gas outlet of the gas flow path toward the discharge direction of the brown gas. Generation system.
The method of claim 8,
The backfire prevention structure is a large-capacity brown gas generation system with improved backfire prevention and self-power generation, characterized in that the inner diameter (D) of the inner circumferential surface of the front end of the housing is gradually increased toward the front.
The method of claim 9,
The backfire prevention structure is characterized in that the inner diameter (D) of the inner circumferential surface of the front end of the housing is 1.5 to 1.7 times larger than the length (L) of the front end of the housing spaced forward from the gas outlet. Large capacity brown gas generation system with improved self-generation function.
The method according to any one of claims 8 to 10,
The brown gas burner is inserted into the front end of the housing and the backfire prevention cap formed to have the backfire prevention structure;
Including more,
The backfire prevention cap is a high-capacity brown gas generation system with improved backfire prevention and self-power generation, characterized in that it is made of a heat-resistant material.

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