Vacuum storage tank for liquid carbon monoxide

Abstract

The utility model relates to a liquid carbon monoxide vacuum storage tank. According to the scheme, a heat insulation material is attached to the inner wall of an inner container, and a liquid inlet / outlet connector is formed in the top and extends to the outside through the top of an outer container. The inner container and the outer container form a vacuum interlayer, and a vacuum isolating valve M1 and a vacuumizing valve N1 are arranged to keep the vacuum degree of the interlayer. The double safety valves are connected with the recovery pipeline through a first safety valve pipeline and a second safety valve pipeline respectively and used for discharging in the overpressure state. In addition, an overpressure automatic release pipeline is particularly arranged, an automatic pressure release valve is arranged to be communicated with a recovery pipeline, and it is ensured that gas is safely released when the inner container is overpressure. In addition, a pressure maintaining pipeline is arranged and is combined with an automatic pressure increasing valve I1 and a self-pressure increasing vaporizer L1 to carry out precise pressure increasing control on the inner container. The inner container and the outer container are both integrated with pressure and temperature monitoring points, the inner container further has a liquid level monitoring function, and all-directional safety monitoring and efficient operation are achieved.

Description

Technical Field

[0001] The present application relates to the field of chemical technology, and in particular to a liquid carbon monoxide vacuum storage tank. Background Art

[0002] With the needs of industrial production and technological development, carbon monoxide, as an important chemical raw material and energy medium, has been widely used in metallurgy, chemical synthesis, fuel preparation and other fields. However, carbon monoxide has significant flammability, explosion and high toxicity, which makes its safety in storage and transportation a crucial issue. The existing conventional practice mainly focuses on the storage of carbon monoxide in gaseous form, that is, compressing it to a high pressure state and storing it in a dedicated pressure vessel.

[0003] Although the gaseous carbon monoxide storage method can achieve rapid filling and discharge, it exposes some obvious defects and safety hazards in actual operation. First, due to the low density of carbon monoxide under standard conditions, a higher storage pressure is often required to accommodate a certain amount of the substance during gaseous storage. This not only increases the difficulty of designing and manufacturing the container, but also requires extremely high pressure resistance of the container under long-term high pressure, and the potential risk of leakage also increases accordingly. Secondly, high-pressure gaseous storage leads to limited storage capacity per unit volume, thereby increasing the floor space and construction cost of storage facilities, which is not conducive to the effective use of space and maximization of economic benefits.

[0004] In view of this, there is an urgent need for a new carbon monoxide storage solution that can increase the storage capacity of carbon monoxide per unit volume, while ensuring safe and reliable storage of carbon monoxide and making the carbon monoxide easy to use. Utility Model Content

[0005] The purpose of this application is to provide a liquid carbon monoxide vacuum storage tank in view of the above-mentioned problems existing in the prior art.

[0006] In order to achieve the above application purpose, the present application adopts the following technical solution: the liquid carbon monoxide vacuum storage tank comprises:

[0007] The inner container has an outer wall provided with heat-insulating material, and a liquid inlet and outlet pipe opening is provided on the top of the inner container and extends out of the outer container;

[0008] The interlayer between the outer container and the inner container is vacuumized and is externally connected with a vacuum isolation valve M1 and a vacuum valve N1;

[0009] The first safety valve pipeline has one end connected to the top of the inner container and the other end extending out of the outer container to connect to the recovery pipeline, and is discharged to the recovery pipeline through the double safety valve;

[0010] A second safety valve pipeline, one end of which is connected to the top of the outer container and the other end of which is connected to the recovery pipeline and discharged to the recovery pipeline through the double safety valve;

[0011] The overpressure automatic relief pipeline has one end connected to the top of the inner container and the other end connected to the recovery pipeline, and the overpressure gas is released to the recovery pipeline through the automatic pressure relief valve;

[0012] The pressure-maintaining pipeline has one end connected to the top of the inner container and the other end connected to the recovery pipeline, and the inner container is pressurized through the automatic pressure-boosting valve I1 and the self-pressurizing gasifier L1;

[0013] Among them, the inner container and the outer container are respectively provided with pressure monitoring points and temperature monitoring points, and the inner container is also provided with a liquid level monitoring point.

[0014] Furthermore, the first safety valve pipeline includes a three-way switching valve A1, a safety valve B1, and a safety valve B2. The outlets of the two safety valves are connected to the recovery pipeline, and the two safety valves are connected to the top of the inner container through the three-way switching valve A1.

[0015] Furthermore, the second safety valve pipeline includes a three-way switching valve A2, a safety valve B3, and a safety valve B4. The outlets of the two safety valves are connected to the recovery pipeline, and the two safety valves are connected to the top of the outer container through the three-way switching valve A2.

[0016] Furthermore, the overpressure automatic relief pipeline includes an automatic pressure relief valve C1, a relief valve D1, an automatic pressure relief cut-off valve E1, and a manual pressure relief valve F1. The automatic pressure relief cut-off valve E1 and the manual pressure relief valve F1 are both connected to the top of the inner container through the same pipeline, the outlet of the manual pressure relief valve F1 is connected to the recovery pipeline, the automatic pressure relief valve C1 and the relief valve D1 are both connected to the outlet of the automatic pressure relief cut-off valve E1, and the outlets of the automatic pressure relief valve C1 and the relief valve D1 are both connected to the recovery pipeline.

[0017] Furthermore, the overpressure automatic relief pipeline also includes a safety valve B5, one end of which is connected to the outlet of the automatic pressure relief cut-off valve E1, and the outlet is connected to the recovery pipeline.

[0018] Furthermore, the pressure maintaining pipeline includes a boosting gas phase valve G1, a boosting liquid phase valve H1, an automatic boosting valve I1, a discharge valve D2 and a self-boosting vaporizer L1, one end of the boosting gas phase valve G1 is connected to the top of the inner container, and the other end is connected to the second end of the automatic boosting valve I1, one end of the boosting liquid phase valve H1 is connected to the top of the inner container, and the other end is connected to the first end of the self-boosting vaporizer L1, the first end of the automatic boosting valve I1 is connected to the second end of the self-boosting vaporizer L1, one end of the discharge valve D2 is connected to the connecting pipeline between the automatic boosting valve I1 and the self-boosting vaporizer L1, and the other end is connected to the recovery pipeline.

[0019] Furthermore, the pressure maintaining pipeline also includes a safety valve B6 and a safety valve B7. One end of the safety valve B6 is connected to the connecting pipeline between the automatic boosting valve I1 and the self-pressurizing gasifier L1, and the other end is connected to the recovery pipeline. One end of the safety valve B7 is connected to the connecting pipeline between the automatic boosting valve I1 and the boosting gas phase valve G1, and the other end is connected to the recovery pipeline.

[0020] Furthermore, both the inner container and the outer container are made of a material that can withstand low temperatures of -193°C.

[0021] Furthermore, a product liquid phase valve H2 is provided on the liquid outlet of the inner container, so that the liquid is delivered to the user under pressure, reducing the process of pumps or compressors, and improving the safety and convenience of use.

[0022] Furthermore, a vacuum gauge O1 is provided in the interlayer between the inner container and the outer container.

[0023] Compared with the prior art, this application has the following beneficial effects:

[0024] 1. In view of the high-pressure storage problem caused by low density when storing carbon monoxide in gaseous form in the prior art and the resulting disadvantages such as complex container design, high risk of leakage, and limited storage capacity, this application innovatively uses liquid form to store carbon monoxide, and combines vacuum insulation technology to greatly reduce the storage pressure, effectively increasing the storage capacity per unit volume, reducing the area occupied by storage facilities, and enhancing economic benefits.

[0025] 2. This application includes a series of sophisticated safety protection and control mechanisms. The vacuum interlayer formed between the inner container and the outer container effectively isolates heat transfer and reduces the risk of carbon monoxide vaporization. The first and second safety valve pipelines are equipped with a double safety valve structure and connected to the recovery pipeline through a three-way switching valve, which can quickly and reliably relieve pressure when an abnormal pressure increase occurs in the inner and outer containers. The automatic pressure relief valve, relief valve and multiple safety valves on the overpressure automatic relief pipeline work together to ensure immediate response and safe discharge under overpressure conditions. The pressure maintaining pipeline uses the automatic boost valve I1, the self-boosting vaporizer L1 and various control valves to achieve precise regulation and maintenance of the internal pressure of the inner container;

[0026] 3. This application sets pressure monitoring points, temperature monitoring points and liquid level monitoring points at key positions of the inner container and the outer container, realizing real-time monitoring and control of the working status of the storage tank. In addition, both the inner container and the outer container are made of -193°C low-temperature resistant materials, ensuring the stability and durability of the equipment in extreme low-temperature environments. The setting of the product liquid phase valve H2 facilitates the orderly output of carbon monoxide, and the vacuum gauge O1 helps monitor the vacuum degree of the interlayer to ensure the efficient operation of the overall system.

[0027] 4. In summary, this application not only solves many shortcomings of traditional gaseous storage methods, but also realizes efficient, safe and convenient storage and use of carbon monoxide, greatly improving the production safety level and operational efficiency of related industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of this application.

[0029] In the figure, 1. pressure monitoring point; 2. temperature monitoring point; 3. liquid level monitoring point; 4. inner container; 5. outer container. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0031] Those skilled in the art should understand that, in the disclosure of the present application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present application.

[0032] like Figure 1 As shown, the liquid carbon monoxide vacuum storage tank comprises:

[0033] The inner container 4 has an outer wall provided with heat-insulating material, and a liquid inlet and outlet pipe opening is provided at the top of the inner container 4 and extends out of the outer container 5;

[0034] In this embodiment, the outer wall of the inner container 4 is wrapped with insulating materials such as aluminum foil to isolate the radiation heat transfer of the inner and outer containers 5. In the design process, a suitable design pressure can be selected according to the use pressure of the gas carbon monoxide. The specific prior art belongs to the basic common sense of those skilled in the art and will not be repeated here.

[0035] Among them, the product liquid phase valve H2 is provided on the liquid inlet and outlet pipes. It is delivered to the user under pressure, which reduces the process of pumps or compressors and improves the safety and convenience of use.

[0036] The interlayer between the outer container 5 and the inner container 4 is vacuumized, and is externally connected to a vacuum isolation valve M1 and a vacuum pumping valve N1;

[0037] In this embodiment, when the product is under maintenance or the vacuum degree of the interlayer deteriorates, the vacuum pump can be connected to the vacuum valve N1, and the vacuum isolation valve M1 can be opened to vacuumize the container interlayer. In the design process, the gasification amount of carbon monoxide leakage under the most extreme working conditions can be calculated according to the size of the outer container 5 and the surface area of ​​the outer container 5 to select a suitable safety valve and the design pressure of the outer container 5. The specific prior art belongs to the basic common sense of those skilled in the art and will not be repeated here.

[0038] Preferably, the inner container 4 and the outer container 5 are made of -193°C low temperature resistant material. Preferably, the interlayer between the inner container 4 and the outer container 5 is provided with a vacuum gauge O1, which is connected to the existing control system to measure and monitor the vacuum degree of the interlayer in real time. When the vacuum degree of the interlayer is abnormal, the automatic pressure relief valve C1 of the inner container 4 (the first safety valve pipeline behind) is automatically opened to release CO to the recovery pipeline.

[0039] The inner container 4 and the outer container 5 are respectively provided with a pressure monitoring point 1 and a temperature monitoring point 2, and the inner container 4 is also provided with a liquid level monitoring point 3. The monitoring points here are all detected by sensors of the prior art. The pressure monitoring point 1 provided in the inner container 4 is used to continuously monitor the pressure of the inner container 4 in real time, and the liquid level monitoring point 3 provided in the inner container 4 is used to continuously monitor the liquid level of the inner container 4, that is, the amount of product in real time.

[0040] At least two temperature monitoring points 2 are arranged at the bottom of the outer container 5, which are connected to the control system at the same time to monitor the temperature of the bottom of the interlayer in real time, and are used to continuously monitor in real time whether there is leakage at the bottom of the inner container, so as to ensure that the container is in a safe working state; at least three temperature monitoring points 2 are arranged on the bottom wall of the outer container 5, which are connected to the control system at the same time to measure the upper, middle and lower parts of the interlayer in real time, and are used to continuously monitor in real time whether there is leakage in the middle and upper part of the inner container, so as to ensure that the container is in a safe working state.

[0041] The first safety valve pipeline has one end connected to the top of the inner container 4 and the other end extending out of the outer container 5 to connect to the recovery pipeline, and is discharged to the recovery pipeline through the double safety valve;

[0042] In this embodiment, the first safety valve pipeline includes a three-way switching valve A1, a safety valve B1, and a safety valve B2. The outlets of the two safety valves are connected to the recovery pipeline, and the two safety valves are connected to the top of the inner container 4 through the three-way switching valve A1. In this way, an independent double safety valve design is adopted, and the outlets of the two safety valves (B1, B2) are connected to the recovery pipeline. The three-way switching valve A1 at the bottom of the two safety valves (B1, B2) can ensure that there is always a safety valve (B1 or B2) in a working state. When the interlayer of the inner container 4 is over-pressured, it is discharged to the recovery pipeline through the safety valve of the inner container 4.

[0043] A second safety valve pipeline, one end of which is connected to the top of the outer container 5 and the other end of which is connected to the recovery pipeline and discharged to the recovery pipeline through the double safety valve;

[0044] In this embodiment, the second safety valve pipeline includes a three-way switching valve A2, a safety valve B3, and a safety valve B4. The outlets of the two safety valves are connected to the recovery pipeline, and the two safety valves are connected to the top of the outer container 5 through the three-way switching valve A2. In this way, the same independent double safety valve design, the outlets of the two safety valves (B3, B4) are connected to the recovery pipeline, and the three-way switching valve A2 at the bottom of the two safety valves (B3, B4) can ensure that there is always a safety valve (B3 or B4) in a working state. When the interlayer of the inner container 4 is over-pressured, it is discharged to the recovery pipeline through the safety valve of the inner container 4.

[0045] An overpressure automatic release pipeline, one end of which is connected to the top of the inner container 4, and the other end is connected to the recovery pipeline, and the overpressure gas is released to the recovery pipeline through the automatic pressure relief valve;

[0046] In this embodiment, the overpressure automatic relief pipeline includes an automatic pressure relief valve C1, a relief valve D1, an automatic pressure relief cut-off valve E1, and a manual pressure relief valve F1. The automatic pressure relief cut-off valve E1 and the manual pressure relief valve F1 are both connected to the top of the inner container 4 through the same pipeline, the outlet of the manual pressure relief valve F1 is connected to the recovery pipeline, the automatic pressure relief valve C1 and the relief valve D1 are both connected to the outlet of the automatic pressure relief cut-off valve E1, and the outlets of the automatic pressure relief valve C1 and the relief valve D1 are both connected to the recovery pipeline.

[0047] Preferably, the overpressure automatic relief pipeline further includes a safety valve B5, one end of which is connected to the outlet of the automatic pressure relief cut-off valve E1, and the outlet is connected to the recovery pipeline.

[0048] A pressure-maintaining pipeline, one end of which is connected to the top of the inner container 4 and the other end is connected to the recovery pipeline, and the inner container 4 is pressurized through the automatic pressure-boosting valve I1 and the self-pressurizing gasifier L1;

[0049] In this embodiment, the pressure maintaining pipeline includes a boosting gas phase valve G1, a boosting liquid phase valve H1, an automatic boosting valve I1, a discharge valve D2 and a self-boosting vaporizer L1. One end of the boosting gas phase valve G1 is connected to the top of the inner container 4, and the other end is connected to the second end of the automatic boosting valve I1. One end of the boosting liquid phase valve H1 is connected to the top of the inner container 4, and the other end is connected to the first end of the self-boosting vaporizer L1. The first end of the automatic boosting valve I1 is connected to the second end of the self-boosting vaporizer L1. One end of the discharge valve D2 is connected to the connecting pipeline between the automatic boosting valve I1 and the self-boosting vaporizer L1, and the other end is connected to the recovery pipeline.

[0050] Preferably, the pressure maintaining pipeline also includes a safety valve B6 and a safety valve B7, one end of the safety valve B6 is connected to the connecting pipeline between the automatic boosting valve I1 and the self-pressurizing gasifier L1, and the other end is connected to the recovery pipeline, one end of the safety valve B7 is connected to the connecting pipeline between the automatic boosting valve I1 and the boosting gas phase valve G1, and the other end is connected to the recovery pipeline.

[0051] In this way, the inner container 4 is provided with a pressure-maintaining pipeline, and can provide pressurized carbon monoxide products directly for downstream use without adding equipment such as a pressure pump. This is achieved by liquid self-pressurization. When the pressure of the inner container 4 is lower than the set value, the self-pressurizing gasifier L1 is automatically opened and opened wide, and the liquid at the bottom of the inner container 4 passes through the air bath gasifier (self-pressurizing gasifier L1). The pressure difference between the bottom and top of the inner container 4 is used, and the high-pressure gas after gasification enters the top of the inner container 4 to increase the pressure of the container.

[0052] The parts not described in detail in this application are prior art, so this application does not describe them in detail.

[0053] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0054] Although the terms such as pressure monitoring point 1, temperature monitoring point 2, liquid level monitoring point 3, inner container 4, outer container 5 are used more frequently in this document, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of this application; interpreting them as any additional restrictions is contrary to the spirit of this application.

[0055] The present application is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of this application. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present application.

Claims

1. Liquid carbon monoxide vacuum storage tank, characterized in that: include: The inner container has an outer wall provided with heat-insulating material, and a liquid inlet and outlet pipe opening is provided on the top of the inner container and extends out of the outer container; The interlayer between the outer container and the inner container is vacuumized and is externally connected with a vacuum isolation valve M1 and a vacuum valve N1; A first safety valve pipeline, one end of which is connected to the top of the inner container, and the other end of which extends out of the outer container and is connected to a recovery pipeline, and is discharged to the recovery pipeline through a double safety valve; A second safety valve pipeline, one end of which is connected to the top of the outer container and the other end of which is connected to the recovery pipeline and discharged to the recovery pipeline through a double safety valve; An overpressure automatic release pipeline, one end of which is connected to the top of the inner container, and the other end is connected to the recovery pipeline, and the overpressure gas is released to the recovery pipeline through an automatic pressure relief valve; A pressure-maintaining pipeline, one end of which is connected to the top of the inner container and the other end of which is connected to the recovery pipeline, for increasing the pressure of the inner container through the automatic pressure-boosting valve I1 and the self-pressurizing gasifier L1; Wherein, the inner container and the outer container are respectively provided with a pressure monitoring point and a temperature monitoring point, and the inner container is also provided with a liquid level monitoring point.

2. The liquid carbon monoxide vacuum storage tank according to claim 1, characterized in that: The first safety valve pipeline includes a three-way switching valve A1, a safety valve B1, and a safety valve B2. The outlets of the two safety valves are connected to the recovery pipeline, and the two safety valves are connected to the top of the inner container through the three-way switching valve A1.

3. The liquid carbon monoxide vacuum storage tank according to claim 1, characterized in that: The second safety valve pipeline includes a three-way switching valve A2, a safety valve B3, and a safety valve B4. The outlets of the two safety valves are connected to the recovery pipeline, and the two safety valves are connected to the top of the outer container through the three-way switching valve A2.

4. The liquid carbon monoxide vacuum storage tank according to claim 1, characterized in that: The overpressure automatic relief pipeline includes an automatic pressure relief valve C1, a relief valve D1, an automatic pressure relief cut-off valve E1, and a manual pressure relief valve F1. The automatic pressure relief cut-off valve E1 and the manual pressure relief valve F1 are both connected to the top of the inner container through the same pipeline, the outlet of the manual pressure relief valve F1 is connected to the recovery pipeline, the automatic pressure relief valve C1 and the relief valve D1 are both connected to the outlet of the automatic pressure relief cut-off valve E1, and the outlets of the automatic pressure relief valve C1 and the relief valve D1 are both connected to the recovery pipeline.

5. The liquid carbon monoxide vacuum storage tank according to claim 4, characterized in that: The overpressure automatic relief pipeline further includes a safety valve B5, one end of which is connected to the outlet of the automatic pressure relief cut-off valve E1, and the outlet is connected to the recovery pipeline.

6. The liquid carbon monoxide vacuum storage tank according to claim 1, characterized in that: The pressure maintaining pipeline includes a boosting gas phase valve G1, a boosting liquid phase valve H1, an automatic boosting valve I1, a discharge valve D2 and a self-boosting vaporizer L1. One end of the boosting gas phase valve G1 is connected to the top of the inner container, and the other end is connected to the second end of the automatic boosting valve I1. One end of the boosting liquid phase valve H1 is connected to the top of the inner container, and the other end is connected to the first end of the self-boosting vaporizer L1. The first end of the automatic boosting valve I1 is connected to the second end of the self-boosting vaporizer L1. One end of the discharge valve D2 is connected to the connecting pipeline between the automatic boosting valve I1 and the self-boosting vaporizer L1, and the other end is connected to the recovery pipeline.

7. The liquid carbon monoxide vacuum storage tank according to claim 6, characterized in that: The pressure maintaining pipeline also includes a safety valve B6 and a safety valve B7. One end of the safety valve B6 is connected to the connecting pipeline between the automatic boosting valve I1 and the self-pressurizing gasifier L1, and the other end is connected to the recovery pipeline. One end of the safety valve B7 is connected to the connecting pipeline between the automatic boosting valve I1 and the boosting gas phase valve G1, and the other end is connected to the recovery pipeline.

8. The liquid carbon monoxide vacuum storage tank according to any one of claims 1 to 7, characterized in that: The inner container and the outer container are both made of a material that can withstand low temperatures of -193°C.

9. The liquid carbon monoxide vacuum storage tank according to any one of claims 1 to 7, characterized in that: A product liquid phase valve H2 is provided on the liquid outlet pipe of the inner container.

10. The liquid carbon monoxide vacuum storage tank according to any one of claims 1 to 7, characterized in that: A vacuum gauge O1 is provided in the interlayer between the inner container and the outer container.

Images