Protective device for hydrogen peroxide storage tank

Abstract

The invention discloses a hydrogen peroxide storage tank protection device. Wherein only the side wall of the storage tank is provided with a thermal insulation layer; the sunshade is arranged at the top of the storage tank; the regulation and control interlocking device comprises a spraying pipe, a temperature detector, a pressure detector and a controller; spraying water on the spraying pipe flows downwards along the side wall of the storage tank after being sprayed to the top wall of the storage tank; the temperature detector is at least partially arranged in the storage tank; the pressure detector is at least partially arranged in the storage tank; the controller is in communication connection with the temperature detector and the pressure detector so as to control the alarm to give an alarm when the temperature value is larger than a first threshold value or the pressure value is larger than a second threshold value. And when the temperature value is greater than the third threshold value or the pressure value is greater than the fourth threshold value, the valve is opened to enable the liquid outlet to discharge liquid for spraying. According to the hydrogen peroxide storage tank protection device, overtemperature prevention and overtemperature grading solutions are set, the parking time is shortened while intrinsic safety is guaranteed, and production losses are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of hydrogen peroxide production, and in particular to a protective device for a hydrogen peroxide storage tank. Background Art

[0002] Hydrogen peroxide is widely used in many fields such as papermaking, textiles, chemical synthesis, military industry, electronics, etc. Hydrogen peroxide is a strong oxidant with extremely unstable properties. It is currently believed that alkali, heavy metal ions and rust can cause hydrogen peroxide to decompose. Its decomposition is an exothermic reaction. Once it occurs, the reaction is rapid, and the accumulation of heat will further lead to a runaway reaction.

[0003] In view of the above safety risks, there will be corresponding safety monitoring and prevention measures in chemical design. Generally, the temperature and pressure of the storage tank will be monitored by online automatic control means. When abnormal temperature and pressure occur, corresponding measures will be taken to cool down and release the pressure. Usually, the storage tank will be cooled and sprayed, the tank feed will be stopped, and the overpressure emergency release will be carried out.

[0004] These safety measures have effectively controlled the expansion of risks and reduced the probability of accidents in chemical plants, but the following problems still exist: the decomposition of hydrogen peroxide caused by overheating of the storage tank is the main cause of overpressure in the hydrogen peroxide storage tank, but most of the current hydrogen peroxide storage tanks lack storage tank insulation facilities. In hot weather such as summer, the temperature of the storage tank is very easy to rise, causing the decomposition of hydrogen peroxide. The heat generated by the decomposition will further accumulate and cause the reaction to run away; in addition, when the temperature, pressure and other automatic control instruments have alarm signals, such as monitoring the high pressure alarm, immediately start the corresponding interlock, stop the tank feeding, open the safety relief system, which will lead to a large loss of materials. It takes a certain period of time to deal with related accidents and resume production, which will cause certain economic losses to production. Summary of the invention

[0005] The purpose of this application is to provide a hydrogen peroxide storage tank protection device, set up over-temperature prevention and over-temperature classification solutions, ensure inherent safety while shortening shutdown time and reducing production losses.

[0006] The technical solution of the present application provides a hydrogen peroxide storage tank protection device, comprising: a storage tank, the storage tank is used to store hydrogen peroxide, and only the outer side of the side wall of the storage tank is provided with an insulation layer; a sunshade, the sunshade is arranged on the top of the storage tank; a control interlocking device, the control interlocking device comprises a spray pipe, a temperature detector, a pressure detector and a controller; a valve and a liquid outlet are arranged on the spray pipe, the liquid outlet is arranged toward the top wall of the storage tank, and the spray water flows downward along the side wall of the storage tank after being sprayed to the top wall of the storage tank; the temperature detector is at least partially arranged in the storage tank to detect the temperature value in the storage tank; the pressure detector is at least partially arranged in the storage tank to detect the pressure value in the storage tank; a controller, the controller is connected to the temperature detector and the pressure detector in communication, so as to control the alarm to alarm when the temperature value is greater than a first threshold value, or the pressure value is greater than a second threshold value; and when the temperature value is greater than a third threshold value or the pressure value is greater than the fourth threshold value, the valve is opened to allow the liquid outlet to spray.

[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 with 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 controls the alarm to sound an alarm; and when one of the temperature values ​​is greater than a third threshold, the controller controls the valve to open so that the liquid outlet sprays liquid.

[0008] Optionally, the pressure detector includes a local pressure gauge and a remote pressure gauge, the local pressure gauge is provided with a numerical display, and the remote pressure gauge is communicatively connected to the controller.

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

[0010] Optionally, a solar photovoltaic panel is arranged on the top of the awning, and the solar photovoltaic panel is connected to an energy storage device.

[0011] Optionally, the hydrogen peroxide storage tank protection device further comprises a monitor with a lens arranged toward the storage tank, and the energy storage device is connected to the monitor circuit to supply power to the monitor.

[0012] Optionally, the awning is umbrella-shaped, the spray pipe extends around the circumference of the awning, the liquid outlet is provided with a spray head, and the spray heads are arranged along the circumference of the awning.

[0013] Optionally, a support rod is installed on the awning, the length of the support rod is adjustable, and rollers are provided at the bottom of the support rod to allow the awning to move.

[0014] Optionally, a rotatable shaft and a roller blind that can be rolled up on the shaft are provided at the edge of the awning, and the roller blind extends vertically when unfolded.

[0015] Optionally, the number of the support rods is at least two, and at least two of the support rods are arranged around the circumference of the awning; a positioning rod is connected between the two relatively arranged support rods, a connecting rod is provided between the positioning rod and the top of the awning, and an inclined telescopic rod is provided between the two relatively arranged support rods and the awning, and the opening and closing angle of the awning 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 by the present application is provided with a sunshade and an insulation layer to prevent over-temperature. The sunshade reduces the time that the storage tank is exposed to direct sunlight, and reduces the risk of over-temperature decomposition of hydrogen peroxide in the storage tank; the insulation layer is only provided outside the side wall of the storage tank, which reduces the over-temperature decomposition of the liquid in the storage tank caused by the increase in ambient temperature, and allows the spray water gathered on the top of the storage tank to fall from the side wall of the storage tank, and the spray water cools the side wall of the storage tank as it falls along the side wall of the storage tank. A control interlocking device is provided for over-temperature monitoring and over-temperature hierarchical solution, and a temperature detector and a pressure detector are used for over-temperature monitoring. The controller controls the alarm to sound an alarm when the first threshold or the second threshold is triggered, and controls the spray pipe to spray when the third threshold and the fourth threshold are triggered. The present application adopts hierarchical safety facilities, and multiple safety measures such as over-temperature prevention, over-temperature monitoring, and over-temperature solution are coupled to ensure the inherent safety of the device while reducing downtime and production losses. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0020] Reference Numbers

[0021] 1- Storage tank.

[0022] 2- awning, 20- solar photovoltaic panel, 21- support rod, 22- roller, 23- rolling curtain, 24- positioning rod, 25- connecting rod, 26- telescopic rod.

[0023] 3-sprinkler pipe, 30-valve, 31-sprinkler 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 DESCRIPTION

[0030] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0031] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a variety of structural modes and implementation modes that can be replaced by those skilled in the art can be replaced with each other. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction to the technical solution of the invention.

[0032] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0033] like Figure 1 As shown, the present application provides a protective device for a hydrogen peroxide storage tank 1, comprising: a storage tank 1, a sunshade 2 and a control interlocking device.

[0034] Please refer to Figure 1 The storage tank 1 is used to store hydrogen peroxide. The storage tank 1 is provided with a heat-insulating layer only on the outer side of the side wall to reduce over-temperature decomposition of the liquid in the storage tank 1 caused by the increase in ambient temperature.

[0035] The insulation layer is made of porous materials, such as foam, rock wool, foamed cement, etc., so that the spray water gathered on the top of the storage tank 1 can flow into the pores inside the insulation layer and fall along the side wall of the storage tank 1 under the action of gravity. When the spray water falls along the side wall of the storage tank 1, the side wall of the storage tank 1 is cooled. Compared with the prior art solution in which the insulation layer is arranged on the top of the storage tank 1, resulting in the spray water only being able to flow out of the insulation layer, the cooling effect on the storage tank 1 is greatly improved.

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

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

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

[0039] The controller 6 is communicatively connected with the temperature detector 4 and the pressure detector 5 to control the alarm to sound when the temperature value exceeds a first threshold value or the pressure value exceeds a second threshold value, and to open the valve 30 to allow the liquid to spray out of the liquid outlet when the temperature value exceeds a third threshold value or the pressure value exceeds a fourth threshold value.

[0040] In the embodiment of the present application, the first threshold value may be a temperature of 35°C. The first threshold value may be a pressure of 1.4Kpa. When the temperature value exceeds the first threshold value, or the pressure value is greater than the second threshold value, the controller 6 controls the alarm to start an alarm, reminding the production operator to pay attention or take necessary measures, and there is no need to stop the vehicle at this time. The alarm is connected to the controller 6 in communication, and may be a buzzer alarm or a light alarm, etc.

[0041] In the embodiment of the present application, the third threshold value may be a temperature of 38° C. The fourth threshold value may be 1.5 KPa. When the temperature value exceeds the third threshold value, or the pressure value is greater than the fourth threshold value, the controller 6 controls the valve 30 to open, and the spray water enters the spray pipe 3 and is sprayed out from the liquid outlet to spray the storage tank 1.

[0042] The protective device for the hydrogen peroxide storage tank 1 provided in the embodiment of the present application is provided with a sunshade 2 and an insulation layer for over-temperature prevention. The sunshade 2 reduces the time that the storage tank 1 is exposed to direct sunlight, and reduces the risk of over-temperature decomposition of hydrogen peroxide in the storage tank 1; the insulation layer is only provided outside the side wall of the storage tank 1, which reduces the over-temperature decomposition of the liquid in the storage tank 1 caused by the increase in ambient temperature, and can make the spray water gathered on the top of the storage tank 1 fall from the side wall of the storage tank 1, and the spray water cools the side wall of the storage tank 1 when it falls along the side wall of the storage tank 1. A control interlocking device is provided for over-temperature monitoring and over-temperature hierarchical solution, and the temperature detector 4 and the pressure detector 5 are used for over-temperature monitoring. The controller 6 controls the alarm to alarm when the first threshold or the second threshold is triggered, and controls the spray pipe 3 to spray when the third threshold and the fourth threshold are triggered. The present application adopts hierarchical safety facilities, and multiple safety measures such as over-temperature prevention, over-temperature monitoring and over-temperature solution are coupled to ensure the inherent safety of the device while reducing the downtime and production losses.

[0043] In an optional embodiment, the temperature detector 4 includes a first temperature detector 40 located at the side of the storage tank 1 and a second temperature detector 41 located at the top of the storage tank 1; the controller 6 is in communication connection with both the first temperature detector 40 and the second temperature detector 41. In the embodiment of the present application, the first temperature detector 40 is at least partially located at the side of the storage tank 1 to detect the temperature of the side of the storage tank 1 and transmit it to the controller 6; the second temperature detector 41 is at least partially located at the top of the storage tank to detect the temperature of the top of the storage tank 1 and transmit it to the controller 6. When one of the temperature values ​​transmitted to the controller 6 by the first temperature detector 40 and the temperature value transmitted to the controller 6 by the second temperature detector 41 is greater than the first threshold, the controller 6 controls the alarm to sound an alarm; and when one of the above two temperature values ​​is greater than the third threshold, the controller 6 controls the valve 30 to open so that the liquid outlet sprays liquid. The first temperature detector 40 and the second temperature detector 41 realize multi-point monitoring of the storage tank 1, and realize dual-point temperature safety detection and temperature control through interlocking control with the controller 6, further increasing the safety of the storage tank 1.

[0044] In an optional embodiment, the pressure detector 5 includes an on-site pressure gauge 50 and a remote pressure gauge 51, wherein the on-site pressure gauge 50 is provided with a numerical display unit, and the remote pressure gauge 51 is communicatively connected to the controller 6. The on-site pressure gauge 50 in the embodiment of the present application is convenient for on-site operators to observe intuitively, and is used for comparison and calibration. Among them, the numerical display unit can be a display component such as a display screen, and the pressure value is displayed on the display screen. The remote pressure gauge 51 transmits the pressure value to the controller 6. When the pressure value transmitted to the controller 6 by the remote pressure gauge 51 exceeds the second threshold value and the fourth threshold value, the controller 6 takes corresponding actions.

[0045] In an optional embodiment, the top wall of the storage tank 1 is provided with a first breathing valve 7, a second breathing valve 8 and a pressure relief manhole 9. When the pressure value in the storage tank 1 is high, the pressure of the storage tank 1 can be adjusted through the first breathing valve 7 and the second breathing valve 8 on the top of the storage tank 1 to maintain the pressure of the storage tank 1 stable while reducing the volatile emission of the medium. The setting of the double breathing valves on the top of the tank (the first breathing valve 7 and the second breathing valve 8) can prevent the storage tank 1 from being deflated when a single breathing valve is blocked and fails. When the first breathing valve 7 and the second breathing valve 8 of the storage tank 1 are working at full capacity and still cannot meet the pressure relief demand of the storage tank 1, the pressure can be urgently relieved through the pressure relief manhole 9 to reduce the impact on the tank wall and the risk of the top of the storage tank 1 being lifted, and to avoid the danger of hydrogen peroxide overflow or overpressure explosion of the storage tank 1.

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

[0047] In an optional embodiment, a solar photovoltaic panel 20 is provided on the top of the awning 2. Figure 2 As shown, the solar photovoltaic panel 20 can not only increase the shading effect of the awning 2, but also effectively utilize the space on the top of the awning 2 to convert solar energy into electrical energy and store it in the energy storage device to achieve energy storage. The energy storage device in the embodiment of the present application 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 a lens facing the storage tank 1, and the energy storage device is connected to the monitor circuit to power the monitor. The monitor can monitor the operating status of the storage tank 1 in real time, and take emergency measures in time when the storage tank 1 has abnormal operation to reduce production losses. The energy storage device directly serves as the monitor function, realizing the effective use of solar energy.

[0049] In an optional embodiment, the awning 2 is umbrella-shaped, the spray pipe 3 extends around the circumference of the awning, the liquid outlet is provided with a nozzle 31, and the nozzle 31 is arranged along the circumference of the awning 2. In this embodiment of the application, the nozzle 31 can achieve the effect of spraying along the circumference of the storage tank 1, which is conducive to increasing the cooling effect on the storage tank 1. The circumference of the awning 2 can be arranged with support rings, and the spray pipe 3 passes through multiple support rings and is positioned on the awning 2 through the support rings.

[0050] In an optional embodiment, a support rod 21 is installed on the awning 2, and the length of the support rod 21 is adjustable. A roller 22 is provided at the bottom of the support rod 21 for the movement of the awning 2. In the embodiment of the present application, by adjusting the length of the support rod 21, the height of the awning 2 can be adjusted according to the direct angle of the sun to achieve effective shielding of the awning 2. In addition, the roller 22 at the bottom of the support rod 21 can also allow the position of the support rod 21 and the awning 2 to be adjusted, which can also achieve a better shading effect on the storage tank 1. At the same time, the awning 2 can also be moved above other storage tanks 1 that need shading, increasing the application scenarios of the awning 2. A telescopic section is installed on the support rod 21, and the telescopic section can be a hydraulic telescopic rod 26, an electric telescopic rod 26 or a pneumatic telescopic rod 26, and the length adjustment of the support rod 21 is achieved by telescoping.

[0051] In an optional embodiment, the edge of the awning 2 is provided with a rotatable shaft and a roller blind 23 that can be rolled up on the shaft, and the roller blind 23 extends vertically when unfolded. Figure 2 As shown, the rotating shaft realizes the unfolding and retracting of the rolling curtain 23 wound on the rotating shaft by rotating. When the rotating shaft rotates forward, the rolling curtain 23 unfolds to increase the sunshade effect on the storage tank 1, and when the rotating shaft rotates reversely, the rolling curtain 23 is retracted. The edge of the sunshade 2 can be located near the outer edge of the sunshade 2, and there is space to install a support, and the rotating shaft is rotatably installed on the support. The rotating shaft can be driven by a small motor, and the small motor is installed on the sunshade 2.

[0052] In an optional embodiment, the number of the support rods 21 is at least two, and at least two of the support rods 21 are arranged around the circumference of the awning 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 awning 2, and an inclined telescopic rod 26 (forming an acute angle with the vertical direction) is provided between the two opposing support rods 21 and the awning 2, and the opening and closing angle of the awning 2 is controlled by the extension and retraction of the telescopic rod 26. Figure 2 As shown, when the telescopic rod 26 is extended, the opening angle of the awning 2 becomes larger (the orthographic projection area projected onto the ground increases) to increase the sunshade effect and the energy absorption effect of the solar photovoltaic panel 20. When the telescopic rod 26 is retracted, the opening angle of the awning 2 becomes smaller (the orthographic projection area projected onto the ground decreases) to save space and facilitate movement. The telescopic rod 26 can be a hydraulic telescopic rod 26, an electric telescopic rod 26, or a pneumatic telescopic rod 26, and the length of the telescopic rod 26 can be adjusted by telescoping. When the opening angle of the awning 2 changes, the spray pipe 3 slides along the corresponding slides of the multiple support rings to be retracted and released.

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

[0054] The above are only 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, which should also be considered as the protection scope of the present invention.

Claims

1. A hydrogen peroxide storage tank protection device, characterized in that: include: A storage tank, the storage tank is used to store hydrogen peroxide, and the storage tank has an insulation layer only on the outer side of the side wall; A sunshade, the sunshade is arranged on the top of the storage tank; A control interlock device, the control interlock device comprising 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 is arranged toward the top wall of the storage tank, and the spray water flows downward along the side wall of the storage tank after being sprayed onto the top wall of the storage tank; The temperature detector is at least partially disposed in the storage tank to detect a temperature value in the storage tank; a pressure detector, the pressure detector being at least partially disposed in the storage tank to detect a pressure value in the storage tank; A controller is communicatively connected with the temperature detector and the pressure detector to control an alarm to sound when the temperature value is greater than a first threshold value, or the pressure value is greater than a second threshold value; and to open the valve to allow the liquid outlet to spray when the temperature value is greater than a third threshold value, or the pressure value is greater than a fourth threshold value.

2. The hydrogen peroxide storage tank protection device according to claim 1 is characterized in that: The temperature detector includes a first temperature detector located at the side of the storage tank and a second temperature detector located at the top of the storage tank; The controller is in communication connection with 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 controls the alarm to sound an alarm; When a temperature value is greater than a third threshold, the controller controls the valve to open so that the liquid outlet sprays liquid.

3. The hydrogen peroxide storage tank protection device according to claim 1 is characterized in that: The pressure detector comprises an on-site pressure gauge and a remote pressure gauge, the on-site pressure gauge is provided with a numerical display part, and the remote pressure gauge is communicatively connected with 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 provided with a first breathing valve, a second breathing valve and a pressure relief manhole.

5. The hydrogen peroxide storage tank protection device according to any one of claims 1 to 4, characterized in that: A solar photovoltaic panel is arranged on the top of the awning, and the solar photovoltaic panel is 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 a lens arranged toward the storage tank, and the energy storage device is connected to the monitor circuit to supply power to the monitor.

7. The hydrogen peroxide storage tank protection device according to claim 1, characterized in that: The sunshade is in an umbrella shape, the spray pipe extends around the circumference of the sunshade, the liquid outlet is provided with a spray head, and the spray heads are arranged along the circumference of the sunshade.

8. The hydrogen peroxide storage tank protection device according to claim 7, characterized in that: A support rod is installed on the awning, the length of the support rod is adjustable, and a roller is arranged at the bottom of the support rod for the movement of the awning.

9. The hydrogen peroxide storage tank protection device according to claim 8, characterized in that: The edge of the awning is provided with a rotatable shaft and a rolling curtain that can be rolled up on the shaft, and the rolling curtain extends vertically when unfolded.

10. The hydrogen peroxide storage tank protection device according to claim 9, characterized in that: The number of the support rods is at least two, and at least two of the support rods are arranged around the circumference of the awning; A positioning rod is connected between the two oppositely arranged support rods, a connecting rod is provided between the positioning rod and the top of the awning, and an inclined telescopic rod is provided between the two oppositely arranged support rods and the awning, and the opening and closing angle of the awning is controlled by the extension and retraction of the telescopic rod.

Images