Hydrogen peroxide tank protection device

Abstract

This application discloses a protective device for a hydrogen peroxide storage tank. The tank has an insulation layer only on its side walls; a sunshade is located on the top of the tank; the control interlock device includes a spray pipe, a temperature detector, a pressure detector, and a controller; the spray water from the spray pipe sprays onto the top wall of the tank and then flows downwards along the side wall; the temperature detector is at least partially located inside the tank; the pressure detector is at least partially located inside the tank; the controller is communicatively connected to both the temperature and pressure detectors to trigger an alarm when the temperature exceeds a first threshold or the pressure exceeds a second threshold; and to open a valve to allow liquid to spray from the outlet when the temperature exceeds a third threshold or the pressure exceeds a fourth threshold. The hydrogen peroxide storage tank protective device provided in this application incorporates over-temperature prevention and over-temperature classification solutions, ensuring intrinsic safety while reducing downtime and production losses.

Description

Technical Field

[0001] This application relates to the field of hydrogen peroxide production technology, and in particular to a protective device for hydrogen peroxide storage tanks. Background Technology

[0002] Hydrogen peroxide is widely used in many fields such as papermaking, textiles, chemical synthesis, military industry, and electronics. Hydrogen peroxide is a strong oxidizing agent and is extremely unstable. It is currently believed that alkaline solutions, heavy metal ions, and rust can all cause hydrogen peroxide to decompose. This decomposition is an exothermic reaction; once it occurs, the reaction is rapid, and the accumulated heat can further lead to an uncontrolled reaction.

[0003] To address the aforementioned safety risks, corresponding safety monitoring and preventative measures are implemented in chemical engineering design. Generally, online automatic monitoring of the storage tank's temperature and pressure is used. When abnormal temperatures or pressures occur, appropriate measures are taken to cool down and depressurize. These typically include cooling sprays, stopping the tank's feed, and emergency overpressure relief.

[0004] These safety measures have effectively controlled the escalation of risks and reduced the probability of accidents in chemical plants. However, the following problems still exist: Hydrogen peroxide decomposition caused by overheating in storage tanks is the main cause of overpressure in hydrogen peroxide storage tanks. Currently, most hydrogen peroxide storage tanks lack insulation facilities. In hot weather such as summer, the tank temperature can easily rise, leading to hydrogen peroxide decomposition. The heat generated by decomposition will further accumulate, causing the reaction to runaway. Furthermore, when automatic control instruments such as temperature and pressure issue alarm signals, such as detecting a high pressure alarm, immediately activating the corresponding interlocks, stopping the tank feed, and opening the safety relief system can lead to significant material loss. Handling related accidents and restoring production requires a certain period, resulting in some economic losses to production. Summary of the Invention

[0005] The purpose of this application is to provide a protection device for hydrogen peroxide storage tanks, which includes over-temperature prevention and over-temperature classification solutions to ensure inherent safety while shortening downtime and reducing production losses.

[0006] This application provides a protective device for a hydrogen peroxide storage tank, comprising: a storage tank for storing hydrogen peroxide, wherein the storage tank has an insulation layer only on the outer side of its sidewall; a sunshade installed on the top of the storage tank; a control interlock device including a spray pipe, a temperature detector, a pressure detector, and a controller; the spray pipe is provided with a valve and a liquid outlet, the liquid outlet facing the top wall of the storage tank, and the spray water flows downward along the sidewall of the storage tank after spraying onto the top wall; the temperature detector is at least partially installed inside the storage tank to detect the temperature value inside the storage tank; the pressure detector is at least partially installed inside the storage tank to detect the pressure value inside the storage tank; and the controller is communicatively connected to both the temperature detector and the pressure detector to trigger an alarm when the temperature value is greater than a first threshold or the pressure value is greater than a second threshold; and to open the valve to allow liquid to spray from the liquid outlet when the temperature value is greater than a third threshold or the pressure value is greater than a fourth threshold.

[0007] Optionally, the temperature detector includes a first temperature detector located on the side of the storage tank and a second temperature detector located on the top of the storage tank; the controller is communicatively connected to both the first and second temperature detectors, so that when one of the temperature values ​​transmitted to the controller by the first and second temperature detectors is greater than a first threshold, the controller controls the alarm to sound; and when one of the temperature values ​​is greater than a third threshold, the controller controls the valve to open so that liquid sprays out from the outlet.

[0008] Optionally, the pressure detector includes a local pressure gauge and a remote pressure gauge, the local pressure gauge having a numerical display unit, and the remote pressure gauge being communicatively connected to the controller.

[0009] Optionally, the top wall of the storage tank is provided with a first breather valve, a second breather valve, and a pressure relief manhole.

[0010] Optionally, the top of the sunshade is equipped with a solar photovoltaic panel, and the solar photovoltaic panel is connected to an energy storage device.

[0011] Optionally, the hydrogen peroxide storage tank protection device also includes a monitor with its lens facing the storage tank, and the energy storage device is circuitically connected to the monitor to supply power to the monitor.

[0012] Optionally, the sunshade is umbrella-shaped, the sprinkler pipe extends around the circumference of the sunshade, the liquid outlet is provided with a nozzle, and the nozzle is arranged along the circumference of the sunshade.

[0013] Optionally, the sunshade is equipped with a support rod, the length of which is adjustable, and the bottom of the support rod is provided with rollers for the sunshade to move.

[0014] Optionally, the edge of the sunshade is provided with a rotatable pivot and a roller blind that can be rolled up on the pivot, the roller blind extending vertically when unfolded.

[0015] Optionally, the number of support rods is at least two, and the at least two support rods are arranged around the circumference of the sunshade; a positioning rod is connected between the two oppositely arranged support rods, and a connecting rod is provided between the positioning rod and the top of the sunshade; an inclined telescopic rod is provided between the two oppositely arranged support rods and the sunshade, and the opening and closing angle of the sunshade is controlled by the extension and retraction of the telescopic rod.

[0016] The above technical solution has the following beneficial effects:

[0017] The hydrogen peroxide storage tank protection device provided in this application includes a sunshade and insulation layer for overheat prevention. The sunshade reduces the time the storage tank is exposed to direct sunlight, lowering the risk of hydrogen peroxide decomposition due to overheating. The insulation layer is only installed on the outside of the tank's side wall, reducing the risk of liquid decomposition due to overheating caused by rising ambient temperature, while also allowing spray water collected at the top of the tank to fall down the side wall, cooling the side wall as it falls. A control interlock device is installed for overheat monitoring and tiered overheat resolution. Temperature and pressure detectors monitor overheating, and the controller activates the alarm when the first or second threshold is triggered, and controls the spray pipes to spray when the third and fourth thresholds are triggered. This application employs a tiered safety system, coupling multiple safety measures such as overheat prevention, monitoring, and resolution to ensure the inherent safety of the equipment while minimizing downtime and production losses. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the hydrogen peroxide storage tank protection device in one embodiment of this application.

[0019] Figure 2 This is a schematic diagram of the structure of a sunshade canopy in one embodiment of this application.

[0020] Attached icon number

[0021] 1-Storage tank.

[0022] 2-Sunshade, 20-Solar photovoltaic panel, 21-Support rod, 22-Roller, 23-Roller blind, 24-Positioning rod, 25-Connecting rod, 26-Telescopic rod.

[0023] 3-Spray pipe, 30-Valve, 31-Spray head.

[0024] 4-Temperature detector, 40-First temperature detector, 41-Second temperature detector.

[0025] 5-Pressure detector, 50-Local pressure gauge, 51-Remote pressure gauge.

[0026] 6-Controller.

[0027] 7-First breathing valve.

[0028] 8-Second breathing valve.

[0029] 9-Pressure relief manhole. Detailed Implementation

[0030] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0031] It is readily understood that, based on the technical solution of this invention, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of the invention.

[0032] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0033] like Figure 1 As shown, this application provides a protective device for a hydrogen peroxide storage tank 1, including: a storage tank 1, a sunshade 2, and a control interlock device.

[0034] Please refer to Figure 1 The storage tank 1 is used to store hydrogen peroxide. The storage tank 1 has an insulation layer only on the outer side of its sidewall to reduce the overheating and decomposition of the liquid inside the storage tank 1 caused by the rise in ambient temperature.

[0035] The insulation layer is made of porous materials, such as foam, rock wool, or foamed cement. This allows the spray water collected at the top of the storage tank 1 to flow into the pores inside the insulation layer and fall along the side wall of the storage tank 1 under gravity, thus cooling the side wall of the storage tank 1. Compared to existing technologies where the insulation layer at the top of the storage tank 1 only allows the spray water to flow down from the outside of the insulation layer, this method significantly improves the cooling effect on the storage tank 1.

[0036] The sunshade 2 is installed on top of the storage tank 1 to provide shade for the open-air storage tank 1, reduce the time the storage tank 1 is exposed to direct sunlight, slow down the rate of temperature rise of the liquid in the storage tank 1, and reduce the risk of hydrogen peroxide decomposition due to overheating in the storage tank 1.

[0037] The control and interlocking device includes a spray pipe 3, a temperature detector 4, a pressure detector 5, and a controller 6. The spray pipe 3 is equipped with a valve 30 and a liquid outlet, which faces the top wall of the storage tank 1. After the spray water is sprayed onto the top wall of the storage tank 1, it flows downward from the inside of the insulation layer along the side wall of the storage tank 1.

[0038] The temperature detector 4 is at least partially disposed inside the storage tank 1 to detect the temperature value inside the storage tank 1. The pressure detector 5 is at least partially disposed inside the storage tank 1 to detect the pressure value inside the storage tank 1.

[0039] The controller 6 is communicatively connected to the temperature detector 4 and the pressure detector 5, so as to trigger an alarm when the temperature value exceeds the first threshold or the pressure value exceeds the second threshold, and to open the valve 30 to spray liquid from the outlet when the temperature value exceeds the third threshold or the pressure value exceeds the fourth threshold.

[0040] In this embodiment, the first threshold can be a temperature of 35°C or a pressure of 1.4 kPa. When the temperature exceeds the first threshold or the pressure exceeds the second threshold, the controller 6 activates the alarm to alert production operators to take necessary measures; in this case, there is no need to shut down the production line. The alarm is communicatively connected to the controller 6 and can be a buzzer alarm or a light alarm, etc.

[0041] In this embodiment, the third threshold can be a temperature of 38°C. The fourth threshold can be 1.5 kPa. When the temperature exceeds the third threshold or the pressure exceeds the fourth threshold, the controller 6 controls the valve 30 to open, and the spray water enters the spray pipe 3 and sprays out from the outlet to spray the storage tank 1.

[0042] The hydrogen peroxide storage tank 1 protection device provided in this application embodiment includes a sunshade 2 and an insulation layer for overheat prevention. The sunshade 2 reduces the time the storage tank 1 is exposed to direct sunlight, lowering the risk of overheating and decomposition of the hydrogen peroxide inside the storage tank 1. The insulation layer is only installed on the outside of the side wall of the storage tank 1, reducing the risk of overheating and decomposition of the liquid inside the storage tank 1 caused by rising ambient temperature, while allowing the spray water accumulated at the top of the storage tank 1 to fall down the side wall of the storage tank 1, cooling the side wall as it falls. A control interlock device is set up for overheat monitoring and tiered overheating mitigation. Temperature detector 4 and pressure detector 5 monitor overheating, and controller 6 controls the alarm to sound when the first or second threshold is triggered, and controls the spray pipe 3 to spray when the third and fourth thresholds are triggered. This application adopts a tiered safety facility, coupling multiple safety measures such as overheat prevention, overheat monitoring, and overheat mitigation to ensure the inherent safety of the device while reducing downtime and production losses.

[0043] In an optional embodiment, the temperature detector 4 includes a first temperature detector 40 located on the side of the storage tank 1 and a second temperature detector 41 located on the top of the storage tank 1; the controller 6 is communicatively connected to both the first temperature detector 40 and the second temperature detector 41. In this embodiment, the first temperature detector 40 is at least partially located on the side of the storage tank 1 to detect the temperature on the side of the storage tank 1 and transmit it to the controller 6; the second temperature detector 41 is at least partially located on the top of the storage tank to detect the temperature on the top of the storage tank 1 and transmit it to the controller 6. When either the temperature value transmitted from the first temperature detector 40 to the controller 6 or the temperature value transmitted from the second temperature detector 41 to the controller 6 exceeds a first threshold, the controller 6 activates an alarm; and when either of the two temperature values ​​exceeds a third threshold, the controller 6 controls the valve 30 to open so that liquid sprays out from the outlet. The first temperature detector 40 and the second temperature detector 41 achieve multi-point monitoring of the storage tank 1, and through interlocking control with the controller 6, achieve dual-point temperature safety detection and temperature control, further increasing the safety of the storage tank 1.

[0044] In an optional embodiment, the pressure detector 5 includes a local pressure gauge 50 and a remote pressure gauge 51. The local pressure gauge 50 is equipped with a numerical display unit, and the remote pressure gauge 51 is communicatively connected to the controller 6. In this embodiment, the local pressure gauge 50 facilitates visual observation by on-site personnel for comparison and calibration. The numerical display unit can be a display screen or other display component, showing the pressure value on the screen. The remote pressure gauge 51 transmits the pressure value to the controller 6. When the pressure value transmitted from the remote pressure gauge 51 to the controller 6 exceeds a second threshold and a fourth threshold, the controller 6 takes corresponding action.

[0045] In an optional embodiment, the top wall of the storage tank 1 is provided with a first breather valve 7, a second breather valve 8, and a pressure relief manhole 9. When the pressure inside the storage tank 1 is high, the pressure of the storage tank 1 can be regulated through the first breather valve 7 and the second breather valve 8 at the top of the storage tank 1, maintaining the pressure stability of the storage tank 1 while reducing the emission of volatile media. The dual breather valves (first breather valve 7 and second breather valve 8) at the top of the tank can prevent the storage tank 1 from collapsing in the event of a single breather valve malfunctioning due to blockage. When the first breather valve 7 and the second breather valve 8 of the storage tank 1 are working at full load and still cannot meet the pressure relief requirements of the storage tank 1, emergency pressure relief can be carried out through the pressure relief manhole 9, reducing the impact on the tank wall and the risk of the top of the storage tank 1 being blown off, and avoiding the danger of hydrogen peroxide overflow or overpressure explosion of the storage tank 1.

[0046] In this embodiment, the opening pressure of the first breather valve 7 can be set to 1.1 kPa, the opening pressure of the second breather valve 8 can be set to 1.35 kPa, and the opening pressure of the pressure relief manhole 9 can be set to 1.8 kPa. The first breather valve 7 and the second breather valve 8 are automatically started and stopped by the pressure inside the storage tank, and the graded pressure control reduces the amount of material overpressure discharge. The pressure relief manhole 9 is automatically opened by the pressure inside the storage tank.

[0047] In an optional embodiment, the top of the sunshade 2 is provided with solar photovoltaic panels 20. For example... Figure 2 As shown, the solar photovoltaic panel 20 not only increases the shading effect of the sunshade 2, but also effectively utilizes the space at the top of the sunshade 2 to convert solar energy into electrical energy and store it in an energy storage device to achieve energy storage. In this embodiment, the energy storage device can be an energy storage structure such as a battery.

[0048] In an optional embodiment, the protective device for the hydrogen peroxide storage tank 1 further includes a monitor with its lens facing the tank 1. The energy storage device is electrically connected to the monitor to supply power to it. The monitor can monitor the operating status of the storage tank 1 in real time and take timely emergency measures when abnormalities occur, reducing production losses. The energy storage device directly functions as the monitor, realizing the effective utilization of solar energy.

[0049] In one optional embodiment, the sunshade 2 is umbrella-shaped, the spray pipe 3 extends circumferentially around the sunshade, and the liquid outlet is provided with a nozzle 31, which is arranged along the circumference of the sunshade 2. In this embodiment, the nozzles 31 can spray along the circumference of the storage tank 1, which is beneficial for increasing the cooling effect on the storage tank 1. The sunshade 2 may be provided with support rings arranged circumferentially, and the spray pipe 3 passes through multiple support rings and is positioned on the sunshade 2 through the support rings.

[0050] In an optional embodiment, a support rod 21 is installed on the sunshade 2. The length of the support rod 21 is adjustable, and rollers 22 are provided at the bottom of the support rod 21 for the sunshade 2 to move. In this embodiment, by adjusting the length of the support rod 21, the height of the sunshade 2 can be adjusted according to the direct angle of the sun to achieve effective shading of the sunshade 2. In addition, the rollers 22 at the bottom of the support rod 21 also allow the position of the support rod 21 and the sunshade 2 to be adjusted, which can also achieve a good shading effect on the storage tank 1. At the same time, the sunshade 2 can also be moved over other storage tanks 1 that need shading, increasing the application scenarios of the sunshade 2. The support rod 21 is equipped with a telescopic section, which can be a hydraulic telescopic rod 26, an electric telescopic rod 26, or a pneumatic telescopic rod 26, and the length of the support rod 21 can be adjusted by telescoping.

[0051] In an optional embodiment, the edge of the sunshade 2 is provided with a rotatable pivot and a roller blind 23 that can be rolled up on the pivot, the roller blind 23 extending vertically when unfolded. Figure 2 As shown, the rotating shaft unfolds and retracts the roller blind 23 wound around it. When the shaft rotates clockwise, the roller blind 23 unfolds to increase the shading effect on the storage tank 1; when the shaft rotates counterclockwise, the roller blind 23 retracts. The edge of the sunshade 2 can be located near the outer edge of the sunshade 2, with space to install a support, on which the rotating shaft is rotatably mounted. The rotating shaft can be driven by a small motor, which is mounted on the sunshade 2.

[0052] In one optional embodiment, the number of support rods 21 is at least two, and the at least two support rods 21 are arranged circumferentially around the sunshade 2; a positioning rod 24 is connected between the two opposing support rods 21, and a connecting rod 25 is provided between the positioning rod 24 and the top of the sunshade 2; an inclined telescopic rod 26 (forming an acute angle with the vertical direction) is provided between each of the two opposing support rods 21 and the sunshade 2, and the opening and closing angle of the sunshade 2 is controlled by the extension and retraction of the telescopic rod 26. Figure 2 As shown, when the telescopic rod 26 extends, the opening angle of the sunshade 2 increases (the projected area onto the ground increases), thereby enhancing the shading effect and the energy absorption effect of the solar photovoltaic panel 20. When the telescopic rod 26 retracts, the opening angle of the sunshade 2 decreases (the projected area onto the ground decreases), saving space and facilitating movement. The telescopic rod 26 can be hydraulic, electric, or pneumatic, and its length can be adjusted by extension and retraction. As the opening angle of the sunshade 2 changes, the sprinkler pipe 3 slides along the corresponding support rings to extend and retract.

[0053] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0054] The above are merely the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several other modifications can be made based on the principles of the present invention, and these modifications should also be considered within the scope of protection of the present invention.

Claims

1. A protective device for a hydrogen peroxide storage tank, characterized in that, include: A storage tank for storing hydrogen peroxide, wherein the storage tank has an insulation layer only on the outer side of its sidewall; A sunshade is provided on top of the storage tank; A control interlocking device, comprising a spray pipe, a temperature detector, a pressure detector, and a controller; The spray pipe is equipped with a valve and a liquid outlet. The liquid outlet is positioned facing the top wall of the storage tank. After the spray water is sprayed onto the top wall of the storage tank, it flows downward along the side wall of the storage tank. The temperature detector is at least partially disposed inside the storage tank to detect the temperature value inside the storage tank; A pressure detector, at least partially disposed within the storage tank, for detecting the pressure value within the storage tank; The controller is communicatively connected to both the temperature detector and the pressure detector to trigger an alarm when the temperature value exceeds a first threshold or the pressure value exceeds a second threshold; and to open the valve to spray liquid from the outlet when the temperature value exceeds a third threshold or the pressure value exceeds a fourth threshold.

2. The hydrogen peroxide storage tank protection device according to claim 1, characterized in that, The temperature detector includes a first temperature detector located on the side of the storage tank and a second temperature detector located on the top of the storage tank; The controller is communicatively connected to both the first temperature detector and the second temperature detector, so that when one of the temperature values ​​transmitted to the controller by the first temperature detector and the second temperature detector is greater than a first threshold, the controller will activate the alarm. When a temperature value exceeds a third threshold, the controller controls the valve to open so that liquid is sprayed from the outlet.

3. The hydrogen peroxide storage tank protection device according to claim 1, characterized in that, The pressure detector includes a local pressure gauge and a remote pressure gauge. The local pressure gauge is equipped with a numerical display unit, and the remote pressure gauge is communicatively connected to the controller.

4. The hydrogen peroxide storage tank protection device according to claim 1, characterized in that, The top wall of the storage tank is equipped with a first breather valve, a second breather valve, and a pressure relief manhole.

5. The hydrogen peroxide storage tank protection device according to any one of claims 1-4, characterized in that, The top of the sunshade is equipped with solar photovoltaic panels, and the solar photovoltaic panels are connected to an energy storage device.

6. The hydrogen peroxide storage tank protection device according to claim 5, characterized in that, The hydrogen peroxide storage tank protection device also includes a monitor with its lens facing the storage tank, and the energy storage device is circuitically connected to the monitor to supply power to the monitor.

7. The hydrogen peroxide storage tank protection device according to claim 1, characterized in that, The sunshade is umbrella-shaped, the sprinkler pipe extends around the circumference of the sunshade, the liquid outlet is equipped with a nozzle, and the nozzle is arranged along the circumference of the sunshade.

8. The hydrogen peroxide storage tank protection device according to claim 7, characterized in that, The sunshade is equipped with a support rod, the length of which is adjustable, and the bottom of the support rod is provided with rollers for the sunshade to move.

9. The hydrogen peroxide storage tank protection device according to claim 8, characterized in that, The edge of the sunshade is provided with a rotatable pivot and a roller blind that can be rolled up on the pivot, and the roller blind extends vertically when unfolded.

10. The hydrogen peroxide storage tank protection device according to claim 9, characterized in that, The number of support rods is at least two, and the at least two support rods are arranged circumferentially around the sunshade; A positioning rod is connected between the two opposing support rods. A connecting rod is provided between the positioning rod and the top of the sunshade. An inclined telescopic rod is provided between each of the two opposing support rods and the sunshade. The opening and closing angle of the sunshade is controlled by extending and retracting the telescopic rod.

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