Foam liquid transfer, delivery and storage container, method and application

Abstract

The present invention discloses a foam liquid transfer, delivery and storage container, comprising a container body; a porous packing layer is provided at the bottom inner side of the container body, and a restriction plate is provided at the top of the porous packing layer; a first separation membrane is covered on the upper surface of the restriction plate, and the first separation membrane allows polar liquids to pass through but does not allow non-polar liquids to pass through; a non-polar liquid delivery pipeline is provided on the outside of the container body; a second separation membrane is provided at the top end of the non-polar liquid delivery pipeline, and the second separation membrane allows non-polar liquids to pass through but does not allow polar liquids to pass through; a third separation membrane is provided in the foam liquid outlet pipe, and the third separation membrane allows polar liquids to pass through but does not allow non-polar liquids to pass through. The present invention also discloses a foam liquid transfer, delivery and storage method. The present invention can prevent the flowing foam liquid from coming into contact with air during the foam liquid filling process by providing the porous packing layer, the restriction plate, the first separation membrane, and the liquid solvent in the non-polar liquid delivery pipeline.

Description

Technical Field

[0001] The present invention belongs to the technical field of fire protection, and in particular relates to a foam liquid transfer, delivery and storage container, method and application. Background Art

[0002] In the petrochemical industry, fire accidents frequently occur due to the flammable and explosive properties of the medium. Currently, firefighting foam is mainly used to extinguish petrochemical fires.

[0003] The main component of fire foam liquid is water. In order for the foam to have a good fire extinguishing effect, it needs to be easily mixed with air to form foam. Therefore, the foam liquid components contain a lot of surfactants, so it is very easy to foam. As long as it is in a non-static state and comes into contact with air, it can foam quickly.

[0004] At the scene of a fire, the foam liquid stored in the fire truck will soon run out. However, large petrochemical fires usually last for several days, so the foam liquid needs to be replenished quickly.

[0005] At present, there are two main methods for transferring fire foam liquid to the fire truck foam liquid storage container:

[0006] The first method is to move the foam barrel (usually with a capacity of 200L) containing fire foam liquid to the top of the fire truck by manpower or crane, open the manhole cover on the top of the fire truck's foam liquid storage container and open the barrel cover of the foam barrel, align the mouth of the foam barrel with the manhole of the fire truck's foam liquid storage container, and then pour the foam liquid into the fire truck's foam liquid storage container.

[0007] When the first method is used, on the one hand, the flowing foam liquid comes into contact with the air during the pouring process, and on the other hand, the poured foam liquid collides with the wall or foam liquid surface of the fire truck's foam liquid storage container. At the same time, air is also present, which results in a large amount of foam being generated during the pouring and collision process, causing the fire truck's foam liquid storage container to be quickly filled with foam, and the volume ratio of the foam liquid in the fire truck's foam liquid storage container is less than 50%.

[0008] The second method is to extract through a foam pump. Connect the suction end of the foam pump to the foam barrel containing fire foam liquid, and place the discharge end of the foam pump into the manhole on the upper part of the fire truck's foam liquid storage container. Then turn on the foam pump to suck the foam liquid in the foam barrel into the fire truck's foam liquid storage container.

[0009] The second method can save manpower and improve work efficiency, but there is still contact between the flowing foam liquid and the air, and the foam liquid collides with the wall or foam liquid surface of the fire truck's foam liquid storage container. At the same time, there is air, so a large amount of foam will also be generated, causing the fire truck's foam liquid storage container to be filled with a large amount of foam. The volume ratio of the foam liquid in the container is less than 50%, which seriously affects subsequent rescue operations.

[0010] Based on the above problems, the present application proposes a foam liquid transfer, delivery and storage container, method and application, so that the foam liquid can stably fill the container body, and the flowing foam liquid can be prevented from contacting with the air during the foam liquid filling process, thereby greatly reducing the generation of foam during the foam liquid filling process to ensure the volume of the foam liquid in the container. Summary of the Invention

[0011] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a foam liquid transport, delivery and storage container.

[0012] To achieve the above object, the present invention adopts the following technical solutions:

[0013] A foam liquid transfer, delivery and storage container, comprising a container body;

[0014] A porous filler layer is provided at the inner bottom of the container body, and a restriction plate with a mesh structure is provided at the top of the porous filler layer;

[0015] The upper surface of the restriction plate is covered with a first separation membrane, the periphery of the first separation membrane is fixedly connected to the inner wall of the container body; the first separation membrane allows polar liquids to pass through and does not allow non-polar liquids to pass through;

[0016] A plurality of non-polar liquid delivery pipelines are provided on the outside of the container body;

[0017] The bottom port of the non-polar liquid delivery pipeline is connected to the inner cavity of the container body and is located above the first separation membrane;

[0018] The top port of the non-polar liquid delivery pipeline is connected to the inner cavity of the container body and is located at the top of the side of the container body. A second separation membrane is provided at the top port of the non-polar liquid delivery pipeline; the periphery of the second separation membrane is fixedly connected to the inner side wall of the non-polar liquid delivery pipeline; the second separation membrane allows non-polar liquid to pass through but does not allow polar liquid to pass through;

[0019] A foam liquid inlet pipe is provided on the outside of the bottom end of the container body;

[0020] A foam liquid outlet pipe is provided at the top of the container body, and a third separation membrane is provided in the foam liquid outlet pipe. The third separation membrane allows polar liquid to pass through but does not allow non-polar liquid to pass through.

[0021] Preferably, the periphery of the first separation membrane is bonded to the inner wall of the container body;

[0022] The periphery of the second separation membrane is bonded to the inner wall of the non-polar liquid delivery pipeline;

[0023] The periphery of the third separation membrane is bonded to the inner side wall of the foam liquid outlet pipe.

[0024] Preferably, the working pressure of the first separation membrane is 0-1 MPa, the working temperature is -15°C-90°C, and the pH is 2-13.

[0025] Preferably, the second separation membrane has an operating pressure of 0 to 1 MPa, an operating temperature of -15°C to 90°C, and a pH of 2 to 13.

[0026] Preferably, the working pressure of the third separation membrane is 0-1 MPa, the working temperature is -15°C-90°C, and the pH is 2-13.

[0027] Preferably, the container body includes a side plate with a cylindrical structure, a bottom plate is fixedly provided at the bottom end of the side plate, and a top plate is fixedly provided at the top end of the side plate.

[0028] Preferably, the side panels and the top panel are connected by bolts.

[0029] Preferably, a liquid inlet valve is provided on the foam liquid inlet pipe.

[0030] Preferably, a non-polar liquid storage tank is provided on the non-polar liquid delivery pipeline.

[0031] Preferably, a control valve is provided on the pipeline between the non-polar liquid storage tank and the bottom port of the non-polar liquid delivery pipeline.

[0032] Preferably, the liquid solvent stored in the non-polar liquid storage tank is a non-polar liquid having a density lower than that of the foam liquid and being immiscible with the foam liquid.

[0033] Preferably, a coil tube in a mosquito coil-like structure is provided in the porous filler layer, a central port of the coil tube is downwardly connected to the foam liquid inlet pipe, and the other port of the coil tube is blocked;

[0034] The coil is provided with a slit liquid outlet extending along the central axis of the coil.

[0035] The invention also provides a foam liquid transporting, delivery and storage method.

[0036] The foam liquid transfer, delivery and storage method is implemented using a foam liquid transfer, delivery and storage container, and includes the following steps:

[0037] Step 1: Remove the top plate of the container body, open the liquid inlet valve, inject foam liquid, and fill the porous filler layer through the coil;

[0038] Let it stand for the foam to completely disappear. After the foam disappears, the liquid surface of the foam liquid is close to the upper limiting plate.

[0039] Then install the top plate;

[0040] Step 2: Fill the non-polar liquid storage tank with liquid solvent;

[0041] Step 3: Open the control valve to release the liquid solvent onto the upper surface of the first separation membrane until a liquid solvent layer of a certain thickness is formed, and then close the control valve;

[0042] Step 4: Open the liquid inlet valve and inject the foam liquid. The foam liquid enters the porous filler layer filled with foam liquid through the coil, so that the liquid level of the foam liquid continues to rise through the restriction plate and the first separation membrane.

[0043] As the foam liquid level rises, the liquid solvent layer always floats on the foam liquid level;

[0044] Step 5: When the liquid solvent layer on the foam liquid reaches the top of the container body, it is discharged into the non-polar liquid delivery pipeline through the second separation membrane at the top port of the non-polar liquid delivery pipeline, and finally enters the non-polar liquid storage tank for recycling;

[0045] The foam liquid at the top passes through the third separation membrane and reaches the foam liquid outlet pipe; when foam liquid is seen in the foam liquid outlet pipe, close the foam liquid inlet valve.

[0046] The invention also provides an application of a foam liquid transporting, delivering and storing container.

[0047] The application of foam liquid transfer, delivery and storage containers in foam tankers at fire extinguishing sites.

[0048] The beneficial effects of the present invention are:

[0049] (1) The present invention, through the structural arrangement of the porous packing layer, the limiting plate, the first separation membrane, and the arrangement of the liquid solvent in the non-polar liquid delivery pipeline, enables the foam liquid to stably fill the container body, and prevents the flowing foam liquid from contacting with air during the foam liquid filling process, thereby greatly reducing the generation of foam during the foam liquid filling process and ensuring the volume of the foam liquid in the container;

[0050] (2) In the method of the present invention, the initial liquid level of the foam liquid is higher than the height of the coil, and a restriction plate is arranged on the top of the coil. After defoaming, the initial liquid level of the foam liquid is close to the upper restriction plate. This prevents the subsequent foam liquid from contacting with air when entering the container body, slows down the initial momentum of the subsequent foam liquid entering the container body, and avoids causing agitation of the liquid surface.

[0051] (3) In the present invention, a first separation membrane is provided on the limiting plate. The liquid solvent can be controlled to enter the container body through a control valve and flow on the first separation membrane to form a layer of liquid solvent. This liquid solvent layer can further maintain the stability of the foam liquid level and prevent the foam liquid from contacting the air.

[0052] (4) In the present invention, a second separation membrane is provided at the top port of the non-polar liquid delivery pipeline, and a third separation membrane is provided in the foam liquid outlet pipe; the second separation membrane allows the liquid solvent to pass through but does not allow the foam liquid to pass through, and the third separation membrane allows the foam liquid to pass through but does not allow the liquid solvent to pass through; thus, at the top of the container body, the liquid solvent is discharged into the non-polar liquid delivery pipeline through the second separation membrane, and finally enters the non-polar liquid storage tank for recycling, while the foam liquid passes through the third separation membrane and reaches the foam liquid outlet pipe, thereby realizing the separation of the foam liquid and the liquid solvent. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The drawings in the specification, which constitute a part of this application, are used to provide further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute improper limitations on this application.

[0054] Figure 1 It is a structural schematic diagram of the foam liquid transport, delivery and storage container of the present invention;

[0055] Figure 2 It is a structural schematic diagram of the limiting plate in the present invention;

[0056] Figure 3 It is a structural schematic diagram of the supporting circular plate in the present invention;

[0057] Figure 4 It is a structural schematic diagram of the coil in the present invention;

[0058] Figure 5 yes Figure 4 AA sectional view;

[0059] in:

[0060] 1- container body, 101- side plate, 102- bottom plate, 103- top plate;

[0061] 2-foam liquid inlet pipe, 201-liquid inlet valve;

[0062] 3-Foam liquid outlet pipe;

[0063] 4-porous filler layer, 5-limiting plate, 6-first separation membrane;

[0064] 7- non-polar liquid delivery pipeline, 701- non-polar liquid storage tank, 702- control valve;

[0065] 8-second separation membrane, 801-supporting circular plate;

[0066] 9-coil, 901-slit liquid outlet;

[0067] 10-Third separation membrane. DETAILED DESCRIPTION

[0068] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0069] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0070] In the present invention, the directions or positional relationships indicated by terms such as "upper", "lower", "bottom", and "top" are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention. They do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

[0071] In the present invention, terms such as "connected" and "connection" should be interpreted broadly to mean a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediary. Relevant researchers or technicians in this field may determine the specific meanings of these terms in the present invention based on specific circumstances, and they should not be construed as limitations on the present invention.

[0072] The present invention will be further described below with reference to the accompanying drawings and examples.

[0073] Example 1:

[0074] like Figure 1 As shown, the foam liquid transport, delivery and storage container includes a container body 1;

[0075] A porous filler layer 4 is provided at the bottom of the inner side of the container body 1 to buffer the foam liquid. A restriction plate 5 having a mesh structure is provided on the top of the porous filler layer 4. Specifically, the restriction plate 5 is fixedly connected to the inner side wall of the container body 1. The structure of the restriction plate 5 is as follows: Figure 2 As shown;

[0076] The porous filler layer 4 can be made of materials with different pore sizes. The porous filler layer 4 can be made of microporous material, mesoporous material or macroporous material. The pore size of the microporous material is less than 2 nm, the pore size of the mesoporous material is 2 to 50 nm, and the pore size of the macroporous material is greater than 50 nm.

[0077] The porous filler layer 4 can be made of porous metal material, porous ceramic material or porous plastic;

[0078] The porous filler layer 4 can be made of materials with different porosities. The porous filler layer 4 can be made of low-porosity material, medium-porosity material, or high-porosity material. The porosity of the low-porosity material is <30%, the porosity of the medium-porosity material is 30-60%, and the porosity of the high-porosity material is >60%.

[0079] The limiting plate 5 is made of carbon steel or 304 stainless steel or 304L stainless steel or 310 stainless steel or 321 stainless steel or 316 stainless steel;

[0080] The upper surface of the limiting plate 5 is covered with a first separation membrane 6, the periphery of which is fixedly connected to the inner wall of the container body 1; the first separation membrane 6 allows polar liquids to pass through but does not allow non-polar liquids to pass through, that is, the first separation membrane 6 allows foam liquid to pass through but does not allow liquid solvent to pass through;

[0081] A plurality of non-polar liquid delivery pipelines 7 are provided on the outside of the container body 1; specifically, 2 to 4 non-polar liquid delivery pipelines 7 are evenly provided on the outside of the container body 1 along the circumferential direction;

[0082] The bottom port of the non-polar liquid delivery pipeline 7 is connected to the inner cavity of the container body 1 and is located above the first separation membrane 6;

[0083] The top port of the non-polar liquid delivery pipeline 7 is connected to the inner cavity of the container body 1 and is located at the top of the side of the container body. The second separation membrane 8 is provided at the top port of the non-polar liquid delivery pipeline 7. Specifically, a supporting circular plate 801 for supporting the second separation membrane 8 is fixedly provided at the top port of the non-polar liquid delivery pipeline 7. A plurality of circular through holes are evenly arranged on the supporting circular plate 801. The structure of the supporting circular plate 801 is as follows: Figure 3As shown; the periphery of the second separation membrane 8 is fixedly connected to the inner wall of the non-polar liquid delivery pipeline 7; the second separation membrane 8 allows the non-polar liquid to pass through and does not allow the polar liquid to pass through, that is, the second separation membrane allows the liquid solvent to pass through and does not allow the foam liquid to pass through;

[0084] A foam liquid inlet pipe 2 is provided on the outside of the bottom end of the container body 1;

[0085] A foam liquid outlet pipe 3 is provided at the top of the container body 1, and a third separation membrane 10 is provided in the foam liquid outlet pipe 3. The third separation membrane 10 allows polar liquid to pass through but does not allow non-polar liquid to pass through, that is, the third separation membrane 10 allows foam liquid to pass through but does not allow liquid solvent to pass through.

[0086] Preferably, the periphery of the first separation membrane 6 is bonded to the inner wall of the container body 1 .

[0087] Preferably, the periphery of the second separation membrane 8 is bonded to the inner wall of the non-polar liquid delivery pipeline 7 .

[0088] Preferably, the periphery of the third separation membrane 10 is bonded to the inner wall of the foam liquid outlet pipe 3 .

[0089] Preferably, the working pressure of the first separation membrane 6 is 0-1 MPa, the working temperature is -15°C-90°C, and the pH is 2-13.

[0090] Preferably, the second separation membrane 8 has an operating pressure of 0 to 1 MPa, an operating temperature of -15°C to 90°C, and a pH of 2 to 13.

[0091] Preferably, the working pressure of the third separation membrane 10 is 0-1 MPa, the working temperature is -15°C-90°C, and the pH is 2-13.

[0092] Preferably, the container body 1 includes a side plate 101 with a cylindrical structure, a bottom plate 102 is fixedly provided at the bottom end of the side plate 101 , and a top plate 103 is fixedly provided at the top end of the side plate 101 .

[0093] Preferably, the side panels 101 and the top panel 103 are connected by bolts and can be disassembled.

[0094] Preferably, a liquid inlet valve 201 is provided on the foam liquid inlet pipe 2 .

[0095] Preferably, a non-polar liquid storage tank 701 is provided on the non-polar liquid delivery pipeline 7 .

[0096] Preferably, a control valve 702 is provided on the pipeline between the non-polar liquid storage tank 701 and the bottom port of the non-polar liquid delivery pipeline 7 .

[0097] Preferably, the liquid solvent stored in the non-polar liquid storage tank 701 is a non-polar liquid having a density less than that of the foam liquid and being immiscible with the foam liquid, and can be liquid paraffin or silicone oil.

[0098] Preferably, a coil 9 of a mosquito coil structure is provided in the porous filler layer 4, the central end of the coil 9 is downwardly connected to the foam liquid inlet pipe 2, and the other end of the coil 9 is blocked;

[0099] The coil 9 is provided with a slit liquid outlet 901 extending along the central axis of the coil. The structure of the coil 9 is as follows: Figure 4 As shown, the slit liquid outlet 901 extends over the entire coil 9, so that the cross-sectional area of ​​the slit liquid outlet 901 is large, thereby reducing the momentum of the foam liquid and the effect on the fluctuation of the foam liquid level;

[0100] like Figure 5 As shown, the slit liquid outlet 901 is located at the bottom end of the coil near the center of the coil, and the angle α between the center plane of the slit liquid outlet 901 passing through the central axis of the coil and the horizontal plane where the central axis of the coil is located is 45°.

[0101] Specifically, the coil 9 is made of carbon steel, 304 stainless steel, 304L stainless steel, 310 stainless steel, 321 stainless steel, or 316 stainless steel.

[0102] The coil diameter is 1 / 100 to 1 / 4 of the diameter of the container body 1, and the coil gap is 1 / 10 to 10 of the coil diameter.

[0103] Example 2:

[0104] The foam liquid transfer, delivery and storage method is implemented using the foam liquid transfer, delivery and storage container in Example 1, and includes the following steps:

[0105] Step 1: Remove the top plate 103 of the container body 1, open the liquid inlet valve 201, inject foam liquid, and fill the porous filler layer 4 through the coil 9;

[0106] Let it stand for the foam to completely defoam. After defoaming, the initial liquid level of the foam liquid is close to the upper limiting plate 5.

[0107] Then install the top plate 103;

[0108] In the present application, the initial liquid level of the foam liquid is higher than the height of the coil 9. A restriction plate 5 is arranged on the top of the coil 9. After defoaming, the initial liquid level of the foam liquid is close to the upper restriction plate 5. This prevents the subsequent foam liquid from coming into contact with air when entering the container body 1, slows down the initial momentum of the subsequent foam liquid entering the container body 1, and avoids causing agitation of the liquid surface.

[0109] Step 2: Filling the non-polar liquid storage tank 701 with liquid solvent;

[0110] Step 3: Open the control valve 702 to release the liquid solvent onto the upper surface of the first separation membrane 6 until a liquid solvent layer of a certain thickness is formed, and then close the control valve 702; the liquid solvent layer can further maintain the stability of the foam liquid level and prevent the foam liquid from contacting the air; the thickness of the liquid solvent layer is 0.01 to 0.5 μm;

[0111] Step 4: Open the liquid inlet valve 201 and inject the foam liquid. The foam liquid enters the porous packing layer 4 filled with foam liquid through the coil 9, causing the liquid level of the foam liquid to continue to rise through the restriction plate 5 and the first separation membrane 6. During the foam liquid injection process, since it directly enters the porous packing layer 4 filled with foam liquid, it avoids contact with air. At the same time, since the porous packing layer 4 has the function of absorbing / buffering the impact of the liquid, the injected foam liquid flows out of the coil 9, the porous packing layer 4, the restriction plate 5, and the first separation membrane 6 in a uniform and stable manner.

[0112] During the rising process of the foam liquid level, the liquid solvent layer always floats on the foam liquid surface, thereby preventing the foam liquid from contacting with air;

[0113] Step 5: When the liquid solvent layer on the foam liquid reaches the top of the container body 1, it is discharged into the non-polar liquid delivery pipeline 7 through the second separation membrane 8 at the top port of the non-polar liquid delivery pipeline 7, and finally enters the non-polar liquid storage tank 701 for recycling;

[0114] The foam liquid at the top passes through the third separation membrane 10 and reaches the foam liquid outlet pipe 3; when foam liquid is seen in the foam liquid outlet pipe 3, the foam liquid inlet valve 201 is closed. At this time, the container body 1 is full of foam liquid and basically no foam is generated.

[0115] Example 3:

[0116] The foam liquid transport, delivery and storage container comprises a container body 1, the container body 1 has an inner diameter of 1m and a height of 2m;

[0117] A porous filler layer 4 is provided at the inner bottom of the container body 1 to buffer the foam liquid. A restriction plate 5 having a mesh structure is provided at the top of the porous filler layer 4. Specifically, the restriction plate 5 is fixedly connected to the inner side wall of the container body 1.

[0118] The porous filler layer 4 is made of metal microporous material with a diameter of 1 nm and a porosity of 30%;

[0119] The limiting plate 5 is made of carbon steel;

[0120] The upper surface of the limiting plate 5 is covered with a first separation membrane 6, the periphery of which is fixedly connected to the inner wall of the container body 1; the first separation membrane 6 allows polar liquids to pass through but does not allow non-polar liquids to pass through, that is, the first separation membrane 6 allows foam liquid to pass through but does not allow liquid solvent to pass through;

[0121] Two non-polar liquid delivery pipelines 7 are provided outside the container body 1;

[0122] The bottom port of the non-polar liquid delivery pipeline 7 is connected to the inner cavity of the container body 1 and is located above the first separation membrane 6;

[0123] The top port of the non-polar liquid delivery pipeline 7 is connected to the inner cavity of the container body 1 and is located at the top of the side of the container body. A second separation membrane 8 is provided at the top port of the non-polar liquid delivery pipeline 7. Specifically, a supporting circular plate fixedly provided at the top port of the non-polar liquid delivery pipeline 7 for supporting the second separation membrane 8 is provided, and a plurality of circular through holes are evenly provided on the supporting circular plate; the periphery of the second separation membrane 8 is fixedly connected to the inner side wall of the non-polar liquid delivery pipeline 7; the second separation membrane 8 allows non-polar liquid to pass through but does not allow polar liquid to pass through, that is, the second separation membrane allows liquid solvent to pass through but does not allow foam liquid to pass through;

[0124] A foam liquid inlet pipe 2 is provided on the outside of the bottom end of the container body 1, and a foam liquid outlet pipe 3 is provided on the top end of the container body 1. A third separation membrane 10 is provided in the foam liquid outlet pipe 3. The third separation membrane 10 allows polar liquid to pass through but does not allow non-polar liquid to pass through, that is, the third separation membrane 10 allows foam liquid to pass through but does not allow liquid solvent to pass through.

[0125] Preferably, the periphery of the first separation membrane 6 is bonded to the inner wall of the container body 1 .

[0126] Preferably, the periphery of the second separation membrane 8 is bonded to the inner wall of the non-polar liquid delivery pipeline 7 .

[0127] Preferably, the periphery of the third separation membrane 10 is bonded to the inner wall of the foam liquid outlet pipe 3 .

[0128] Preferably, the working pressure of the first separation membrane 6 is 0-1 MPa, the working temperature is -15°C-90°C, and the pH is 2-13.

[0129] Preferably, the second separation membrane 8 has an operating pressure of 0 to 1 MPa, an operating temperature of -15°C to 90°C, and a pH of 2 to 13.

[0130] Preferably, the working pressure of the third separation membrane 10 is 0-1 MPa, the working temperature is -15°C-90°C, and the pH is 2-13.

[0131] Preferably, the container body 1 includes a side plate 101 with a cylindrical structure, a bottom plate 102 is fixedly provided at the bottom end of the side plate 101 , and a top plate 103 is fixedly provided at the top end of the side plate 101 .

[0132] Preferably, the side panels 101 and the top panel 103 are connected by bolts and can be disassembled.

[0133] Preferably, a liquid inlet valve 201 is provided on the foam liquid inlet pipe 2 .

[0134] Preferably, a non-polar liquid storage tank 701 is provided on the non-polar liquid delivery pipeline 7 .

[0135] Preferably, a control valve 702 is provided on the pipeline between the non-polar liquid storage tank 701 and the bottom port of the non-polar liquid delivery pipeline 7 .

[0136] Preferably, the liquid solvent stored in the non-polar liquid storage tank 701 has a density of 0.9 g / cm 3 of liquid paraffin;

[0137] Preferably, a coil 9 of a mosquito coil structure is provided in the porous filler layer 4, the central end of the coil 9 is downwardly connected to the foam liquid inlet pipe 2, and the other end of the coil 9 is blocked;

[0138] The coil 9 is provided with a slit liquid outlet 901 extending along the central axis of the coil. The structure of the coil 9 is as follows: Figure 4 As shown, the slit liquid outlet 901 extends over the entire coil 9, so that the cross-sectional area of ​​the slit liquid outlet 901 is large, thereby reducing the momentum of the foam liquid and the impact on the fluctuation of the foam liquid level.

[0139] The coil 9 is made of carbon steel, the coil diameter is 1 / 10 of the diameter of the container body 1, and the coil gap is 1 / 2 of the coil diameter.

[0140] Example 4:

[0141] The foam liquid transfer, delivery and storage method is implemented using the foam liquid transfer, delivery and storage container in Example 3, and includes the following steps:

[0142] Step 1: Remove the top plate 103 of the container body 1, open the liquid inlet valve 201, inject foam liquid, and fill the porous filler layer 4 through the coil 9;

[0143] Let it stand for the foam to completely defoam. After defoaming, the liquid surface of the foam liquid is close to the upper limiting plate 5.

[0144] Then install the top plate 103;

[0145] Step 2: Fill the non-polar liquid storage tank 701 with liquid paraffin;

[0146] Step 3: Open the control valve 702 and release the liquid solvent onto the upper surface of the first separation membrane 6 until a layer of liquid paraffin with a thickness of 0.1 μm is formed, and then close the control valve 702;

[0147] Step 4: Open the liquid inlet valve 201 and inject the foam liquid. The foam liquid enters the porous packing layer 4 filled with foam liquid through the coil 9, causing the liquid level of the foam liquid to continue to rise through the restriction plate 5 and the first separation membrane 6. During the foam liquid injection process, since it directly enters the porous packing layer 4 filled with foam liquid, it avoids contact with air. At the same time, since the porous packing layer 4 has the function of absorbing / buffering the impact of the liquid, the injected foam liquid flows out of the coil 9, the porous packing layer 4, the restriction plate 5, and the first separation membrane 6 in a uniform and stable manner.

[0148] As the foam liquid level rises, the liquid paraffin layer always floats on the foam liquid surface, thus preventing the foam liquid from coming into contact with air;

[0149] Step 5: When the liquid paraffin layer on the foam liquid reaches the top of the container body 1, it is discharged into the non-polar liquid delivery pipeline 7 through the second separation membrane 8 at the top port of the non-polar liquid delivery pipeline 7, and finally enters the non-polar liquid storage tank 701 for recycling;

[0150] The foam liquid at the top passes through the third separation membrane 10 and reaches the foam liquid outlet pipe 3; when foam liquid is seen in the foam liquid outlet pipe 3, the foam liquid inlet valve 201 is closed. At this time, the container body 1 is full of foam liquid and basically no foam is generated.

[0151] Example 5:

[0152] The foam liquid transport, delivery and storage container comprises a container body 1, the container body 1 has an inner diameter of 1m and a height of 2m;

[0153] A porous filler layer 4 is provided at the inner bottom of the container body 1 to buffer the foam liquid. A restriction plate 5 having a mesh structure is provided at the top of the porous filler layer 4. Specifically, the restriction plate 5 is fixedly connected to the inner side wall of the container body 1.

[0154] The porous filler layer 4 is made of a metal mesoporous material with a diameter of 25 nm and a porosity of 50%;

[0155] The limiting plate 5 is made of carbon steel;

[0156] The upper surface of the limiting plate 5 is covered with a first separation membrane 6, the periphery of which is fixedly connected to the inner wall of the container body 1; the first separation membrane 6 allows polar liquids to pass through but does not allow non-polar liquids to pass through, that is, the first separation membrane 6 allows foam liquid to pass through but does not allow liquid solvent to pass through;

[0157] Two non-polar liquid delivery pipelines 7 are provided outside the container body 1;

[0158] The bottom port of the non-polar liquid delivery pipeline 7 is connected to the inner cavity of the container body 1 and is located above the first separation membrane 6;

[0159] The top port of the non-polar liquid delivery pipeline 7 is connected to the inner cavity of the container body 1 and is located at the top of the side of the container body. A second separation membrane 8 is provided at the top port of the non-polar liquid delivery pipeline 7. Specifically, a supporting circular plate fixedly provided at the top port of the non-polar liquid delivery pipeline 7 for supporting the second separation membrane 8 is provided, and a plurality of circular through holes are evenly provided on the supporting circular plate; the periphery of the second separation membrane 8 is fixedly connected to the inner side wall of the non-polar liquid delivery pipeline 7; the second separation membrane 8 allows non-polar liquid to pass through but does not allow polar liquid to pass through, that is, the second separation membrane allows liquid solvent to pass through but does not allow foam liquid to pass through;

[0160] A foam liquid inlet pipe 2 is provided on the outside of the bottom end of the container body 1, and a foam liquid outlet pipe 3 is provided on the top end of the container body 1. A third separation membrane 10 is provided in the foam liquid outlet pipe 3. The third separation membrane 10 allows polar liquid to pass through but does not allow non-polar liquid to pass through, that is, the third separation membrane 10 allows foam liquid to pass through but does not allow liquid solvent to pass through.

[0161] Preferably, the periphery of the first separation membrane 6 is bonded to the inner wall of the container body 1 .

[0162] Preferably, the periphery of the second separation membrane 8 is bonded to the inner wall of the non-polar liquid delivery pipeline 7 .

[0163] Preferably, the periphery of the third separation membrane 10 is bonded to the inner wall of the foam liquid outlet pipe 3 .

[0164] Preferably, the working pressure of the first separation membrane 6 is 0-1 MPa, the working temperature is -15°C-90°C, and the pH is 2-13.

[0165] Preferably, the second separation membrane 8 has an operating pressure of 0 to 1 MPa, an operating temperature of -15°C to 90°C, and a pH of 2 to 13.

[0166] Preferably, the working pressure of the third separation membrane 10 is 0-1 MPa, the working temperature is -15°C-90°C, and the pH is 2-13.

[0167] Preferably, the container body 1 includes a side plate 101 with a cylindrical structure, a bottom plate 102 is fixedly provided at the bottom end of the side plate 101 , and a top plate 103 is fixedly provided at the top end of the side plate 101 .

[0168] Preferably, the side panels 101 and the top panel 103 are connected by bolts and can be disassembled.

[0169] Preferably, a liquid inlet valve 201 is provided on the foam liquid inlet pipe 2 .

[0170] Preferably, a non-polar liquid storage tank 701 is provided on the non-polar liquid delivery pipeline 7 .

[0171] Preferably, a control valve 702 is provided on the pipeline between the non-polar liquid storage tank 701 and the bottom port of the non-polar liquid delivery pipeline 7 .

[0172] Preferably, the liquid solvent stored in the non-polar liquid storage tank 701 has a density of 0.9 g / cm 3 of liquid paraffin.

[0173] Preferably, a coil 9 of a mosquito coil structure is provided in the porous filler layer 4, the central end of the coil 9 is downwardly connected to the foam liquid inlet pipe 2, and the other end of the coil 9 is blocked;

[0174] The coil 9 is provided with a slit liquid outlet 901 extending along the central axis of the coil. The structure of the coil 9 is as follows: Figure 4 As shown, the slit liquid outlet 901 extends over the entire coil 9, so that the cross-sectional area of ​​the slit liquid outlet 901 is large, thereby reducing the momentum of the foam liquid and the impact on the fluctuation of the foam liquid level.

[0175] The coil 9 is made of carbon steel, the coil diameter is 1 / 20 of the diameter of the container body 1, and the coil gap is 1 / 2 of the coil diameter.

[0176] Example 6:

[0177] The foam liquid transfer, delivery and storage method is implemented using the foam liquid transfer, delivery and storage container of Example 5, and includes the following steps:

[0178] Step 1: Remove the top plate 103 of the container body 1; open the liquid inlet valve 201, inject the foam liquid, and fill the porous filler layer 4 through the coil 9;

[0179] Let it stand for the foam to completely defoam. After defoaming, the liquid surface of the foam liquid is close to the upper limiting plate 5.

[0180] Then install the top plate 103;

[0181] Step 2: Fill the non-polar liquid storage tank 701 with liquid paraffin;

[0182] Step 3: Open the control valve 702 and release the liquid solvent onto the upper surface of the first separation membrane 6 until a layer of liquid paraffin with a thickness of 0.1 μm is formed, and then close the control valve 702;

[0183] Step 4: Open the liquid inlet valve 201 and inject the foam liquid. The foam liquid enters the porous packing layer 4 filled with foam liquid through the coil 9, causing the liquid level of the foam liquid to continue to rise through the restriction plate 5 and the first separation membrane 6. During the foam liquid injection process, since it directly enters the porous packing layer 4 filled with foam liquid, it avoids contact with air. At the same time, since the porous packing layer 4 has the function of absorbing / buffering the impact of the liquid, the injected foam liquid flows out of the coil 9, the porous packing layer 4, the restriction plate 5, and the first separation membrane 6 in a uniform and stable manner.

[0184] As the foam liquid level rises, the liquid paraffin layer always floats on the foam liquid surface, thus preventing the foam liquid from coming into contact with air;

[0185] Step 5: When the liquid paraffin layer on the foam liquid reaches the top of the container body 1, it is discharged into the non-polar liquid delivery pipeline 7 through the second separation membrane 8 at the top port of the non-polar liquid delivery pipeline 7, and finally enters the non-polar liquid storage tank 701 for recycling;

[0186] The foam liquid at the top passes through the third separation membrane 10 and reaches the foam liquid outlet pipe 3; when foam liquid is seen in the foam liquid outlet pipe 3, the foam liquid inlet valve 201 is closed. At this time, the container body 1 is full of foam liquid and basically no foam is generated.

[0187] Example 7:

[0188] The foam liquid transport, delivery and storage container comprises a container body 1, the container body 1 has an inner diameter of 1m and a height of 2m;

[0189] A porous filler layer 4 is provided at the inner bottom of the container body 1 to buffer the foam liquid. A restriction plate 5 having a mesh structure is provided at the top of the porous filler layer 4. Specifically, the restriction plate 5 is fixedly connected to the inner side wall of the container body 1.

[0190] The porous filler layer 4 is made of a metal mesoporous material with a diameter of 50 nm and a porosity of 70%;

[0191] The limiting plate 5 is made of carbon steel;

[0192] The upper surface of the limiting plate 5 is covered with a first separation membrane 6, the periphery of which is fixedly connected to the inner wall of the container body 1; the first separation membrane 6 allows polar liquids to pass through but does not allow non-polar liquids to pass through, that is, the first separation membrane 6 allows foam liquid to pass through but does not allow liquid solvent to pass through;

[0193] Four non-polar liquid delivery pipelines 7 are provided outside the container body 1;

[0194] The bottom port of the non-polar liquid delivery pipeline 7 is connected to the inner cavity of the container body 1 and is located above the first separation membrane 6;

[0195] The top port of the non-polar liquid delivery pipeline 7 is connected to the inner cavity of the container body 1 and is located at the top of the side of the container body. A second separation membrane 8 is provided at the top port of the non-polar liquid delivery pipeline 7. Specifically, a supporting circular plate fixedly provided at the top port of the non-polar liquid delivery pipeline 7 for supporting the second separation membrane 8 is provided, and a plurality of circular through holes are evenly provided on the supporting circular plate; the periphery of the second separation membrane 8 is fixedly connected to the inner side wall of the non-polar liquid delivery pipeline 7; the second separation membrane 8 allows non-polar liquid to pass through but does not allow polar liquid to pass through, that is, the second separation membrane allows liquid solvent to pass through but does not allow foam liquid to pass through;

[0196] A foam liquid inlet pipe 2 is provided on the outside of the bottom end of the container body 1, and a foam liquid outlet pipe 3 is provided on the top end of the container body 1. A third separation membrane 10 is provided in the foam liquid outlet pipe 3. The third separation membrane 10 allows polar liquid to pass through but does not allow non-polar liquid to pass through, that is, the third separation membrane 10 allows foam liquid to pass through but does not allow liquid solvent to pass through.

[0197] Preferably, the periphery of the first separation membrane 6 is bonded to the inner wall of the container body 1 .

[0198] Preferably, the periphery of the second separation membrane 8 is bonded to the inner wall of the non-polar liquid delivery pipeline 7 .

[0199] Preferably, the periphery of the third separation membrane 10 is bonded to the inner wall of the foam liquid outlet pipe 3 .

[0200] Preferably, the working pressure of the first separation membrane 6 is 0-1 MPa, the working temperature is -15°C-90°C, and the pH is 2-13.

[0201] Preferably, the second separation membrane 8 has an operating pressure of 0 to 1 MPa, an operating temperature of -15°C to 90°C, and a pH of 2 to 13.

[0202] Preferably, the working pressure of the third separation membrane 10 is 0-1 MPa, the working temperature is -15°C-90°C, and the pH is 2-13.

[0203] Preferably, the container body 1 includes a side plate 101 with a cylindrical structure, a bottom plate 102 is fixedly provided at the bottom end of the side plate 101 , and a top plate 103 is fixedly provided at the top end of the side plate 101 .

[0204] Preferably, the side panels 101 and the top panel 103 are connected by bolts and can be disassembled.

[0205] Preferably, a liquid inlet valve 201 is provided on the foam liquid inlet pipe 2 .

[0206] Preferably, a non-polar liquid storage tank 701 is provided on the non-polar liquid delivery pipeline 7 .

[0207] Preferably, a control valve 702 is provided on the pipeline between the non-polar liquid storage tank 701 and the bottom port of the non-polar liquid delivery pipeline 7 .

[0208] Preferably, the liquid solvent stored in the non-polar liquid storage tank 701 has a density of 0.86 g / cm 3 of liquid paraffin.

[0209] Preferably, a coil 9 of a mosquito coil structure is provided in the porous filler layer 4, the central end of the coil 9 is downwardly connected to the foam liquid inlet pipe 2, and the other end of the coil 9 is blocked;

[0210] The coil 9 is provided with a slit liquid outlet 901 extending along the central axis of the coil. The structure of the coil 9 is as follows: Figure 4 As shown, the slit liquid outlet 901 extends over the entire coil 9, so that the cross-sectional area of ​​the slit liquid outlet 901 is large, thereby reducing the momentum of the foam liquid and the impact on the fluctuation of the foam liquid level.

[0211] The coil 9 is made of carbon steel, the coil diameter is 1 / 20 of the diameter of the container body 1, and the coil gap is 1 / 2 of the coil diameter.

[0212] Example 8:

[0213] The foam liquid transfer, delivery and storage method is implemented using the foam liquid transfer, delivery and storage container of Example 7, and includes the following steps:

[0214] Step 1: Remove the top plate 103 of the container body 1, open the liquid inlet valve 201, inject foam liquid, and fill the porous filler layer 4 through the coil 9;

[0215] Let it stand for the foam to completely defoam. After defoaming, the liquid surface of the foam liquid is close to the upper limiting plate 5.

[0216] Then install the top plate 103;

[0217] Step 2: Fill the non-polar liquid storage tank 701 with liquid paraffin;

[0218] Step 3: Open the control valve 702 and release the liquid solvent onto the upper surface of the first separation membrane 6 until a layer of liquid paraffin with a thickness of 0.1 μm is formed, and then close the control valve 702;

[0219] Step 4: Open the liquid inlet valve 201 and inject the foam liquid. The foam liquid enters the porous packing layer 4 filled with foam liquid through the coil 9, causing the liquid level of the foam liquid to continue to rise through the restriction plate 5 and the first separation membrane 6. During the foam liquid injection process, since it directly enters the porous packing layer 4 filled with foam liquid, it avoids contact with air. At the same time, since the porous packing layer 4 has the function of absorbing / buffering the impact of the liquid, the injected foam liquid flows out of the coil 9, the porous packing layer 4, the restriction plate 5, and the first separation membrane 6 in a uniform and stable manner.

[0220] As the foam liquid level rises, the liquid paraffin layer always floats on the foam liquid surface, thus preventing the foam liquid from coming into contact with air;

[0221] Step 5: When the liquid paraffin layer on the foam liquid reaches the top of the container body 1, it is discharged into the non-polar liquid delivery pipeline 7 through the second separation membrane 8 at the top port of the non-polar liquid delivery pipeline 7, and finally enters the non-polar liquid storage tank 701 for recycling;

[0222] The foam liquid at the top passes through the third separation membrane 10 and reaches the foam liquid outlet pipe 3; when foam liquid is seen in the foam liquid outlet pipe 3, the foam liquid inlet valve 201 is closed. At this time, the container body 1 is full of foam liquid and basically no foam is generated.

[0223] The present invention, through the structural arrangement of the coil 9, the porous packing layer 4, the limiting plate 5, the first separation membrane 6, and the arrangement of the liquid solvent in the non-polar liquid delivery pipeline 7, enables the foam liquid to stably fill the container body 1. During the foam liquid filling process, the flowing foam liquid is prevented from contacting with air, thereby greatly reducing the generation of foam during the foam liquid filling process and ensuring the volume of the foam liquid in the container.

[0224] In the method of the present invention, the initial liquid level of the foam liquid is higher than the height of the coil, and a restriction plate 5 is arranged on the top of the coil. After defoaming, the initial liquid level of the foam liquid is close to the upper restriction plate 5, thereby preventing the subsequent foam liquid from contacting with air when entering the container body 1, slowing down the initial momentum of the subsequent foam liquid entering the container body 1, and avoiding agitation of the liquid surface.

[0225] In the present invention, a first separation membrane 6 is provided on the limiting plate 5. The control valve 702 can be used to control the liquid solvent to enter the container body 1 and flow on the first separation membrane 6 to form a liquid solvent layer. This liquid solvent layer can further maintain the stability of the foam liquid level and prevent the foam liquid from contacting the air.

[0226] In the present invention, a second separation membrane 8 is provided at the top port of the non-polar liquid delivery pipeline 7, and a third separation membrane 10 is provided in the foam liquid outlet pipe 3; the second separation membrane 8 allows the liquid solvent to pass through but does not allow the foam liquid to pass through, and the third separation membrane 10 allows the foam liquid to pass through but does not allow the liquid solvent to pass through; thus, at the top of the container body 1, the liquid solvent is discharged into the non-polar liquid delivery pipeline 7 through the second separation membrane 8, and finally enters the non-polar liquid storage tank 701 for recycling, and the foam liquid passes through the third separation membrane 10 and reaches the foam liquid outlet pipe 3, thereby realizing the separation of the foam liquid and the liquid solvent.

[0227] Example 9:

[0228] The foam liquid transfer, delivery and storage container in Example 1 is used in a foam tanker at a fire extinguishing site.

[0229] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not a limitation of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without any creative work are still within the scope of protection of the present invention.

Claims

1. Foam liquid transport, delivery and storage container, characterized in that: including a container body; A porous filler layer is provided at the inner bottom of the container body, and a restriction plate with a mesh structure is provided at the top of the porous filler layer; The upper surface of the restriction plate is covered with a first separation membrane, the periphery of the first separation membrane is fixedly connected to the inner wall of the container body; the first separation membrane allows polar liquids to pass through and does not allow non-polar liquids to pass through; A plurality of non-polar liquid delivery pipelines are provided on the outside of the container body; The bottom port of the non-polar liquid delivery pipeline is connected to the inner cavity of the container body and is located above the first separation membrane; The top port of the non-polar liquid delivery pipeline is connected to the inner cavity of the container body and is located at the top of the side of the container body. A second separation membrane is provided at the top port of the non-polar liquid delivery pipeline; the periphery of the second separation membrane is fixedly connected to the inner side wall of the non-polar liquid delivery pipeline; the second separation membrane allows non-polar liquid to pass through but does not allow polar liquid to pass through; A foam liquid inlet pipe is provided on the outside of the bottom end of the container body; A foam liquid outlet pipe is provided at the top of the container body, and a third separation membrane is provided in the foam liquid outlet pipe. The third separation membrane allows polar liquid to pass through but does not allow non-polar liquid to pass through. The non-polar liquid is a liquid that has a lower density than the foam liquid and is insoluble in the foam liquid.

2. The foam liquid transport, delivery and storage container according to claim 1, characterized in that: The periphery of the first separation membrane is bonded to the inner wall of the container body; The periphery of the second separation membrane is bonded to the inner wall of the non-polar liquid delivery pipeline; The periphery of the third separation membrane is bonded to the inner side wall of the foam liquid outlet pipe.

3. The foam liquid transport, delivery and storage container according to claim 2, characterized in that: The container body includes a side plate in a cylindrical structure, a bottom plate is fixedly arranged at the bottom end of the side plate, and a top plate is fixedly arranged at the top end of the side plate.

4. The foam liquid transporting, delivery and storage container according to claim 3, characterized in that: A liquid inlet valve is arranged on the foam liquid inlet pipe.

5. The foam liquid transporting, delivery and storage container according to claim 4, characterized in that: A non-polar liquid storage tank is provided on the non-polar liquid delivery pipeline.

6. The foam liquid transporting, delivery and storage container according to claim 5, characterized in that: A control valve is provided on the pipeline between the non-polar liquid storage tank and the bottom port of the non-polar liquid delivery pipeline.

7. The foam liquid transporting, delivery and storage container according to claim 6, characterized in that: The liquid solvent stored in the non-polar liquid storage tank is a non-polar liquid having a density lower than that of the foam liquid and being insoluble in the foam liquid.

8. The foam liquid transporting, delivery and storage container according to claim 7, characterized in that: A coil tube in a mosquito coil-like structure is arranged in the porous filler layer. A central port of the coil tube is downwardly connected to a foam liquid inlet pipe. A slit liquid outlet is arranged on the coil tube.

9. The foam liquid transporting, delivery and storage container according to claim 8, characterized in that: The working pressure of the first separation membrane is 0-1 MPa, the working temperature is -15°C-90°C, and the pH is 2-13.

10. The foam liquid transporting, delivery and storage container according to claim 8, characterized in that: The second separation membrane has an operating pressure of 0 to 1 MPa, an operating temperature of -15°C to 90°C, and a pH of 2 to 13.

11. The foam liquid transporting, delivery and storage container according to claim 8, characterized in that: The working pressure of the third separation membrane is 0-1 MPa, the working temperature is -15°C-90°C, and the pH is 2-13.

12. The foam liquid transporting, delivery and storage container according to claim 8, characterized in that: The side plates and the top plate are connected by bolts.

13. A method for transporting, delivering and storing foam liquid, characterized in that: The method is implemented by using the foam liquid transporting, delivery and storage container according to any one of claims 8 to 12, comprising the following steps: Step 1: Remove the top plate of the container body, open the liquid inlet valve, inject foam liquid, and fill the porous filler layer through the coil; Let it stand for the foam to completely disappear. After the foam disappears, the liquid surface of the foam liquid is close to the upper limiting plate. Then install the top plate; Step 2: Fill the non-polar liquid storage tank with liquid solvent; Step 3: Open the control valve to release the liquid solvent onto the upper surface of the first separation membrane until a liquid solvent layer of a certain thickness is formed, and then close the control valve; Step 4: Open the liquid inlet valve and inject the foam liquid. The foam liquid enters the porous filler layer filled with foam liquid through the coil, so that the liquid level of the foam liquid continues to rise through the restriction plate and the first separation membrane. As the foam liquid level rises, the liquid solvent layer always floats on the foam liquid level; Step 5: When the liquid solvent layer on the foam liquid reaches the top of the container body, it is discharged into the non-polar liquid delivery pipeline through the second separation membrane at the top port of the non-polar liquid delivery pipeline, and finally enters the non-polar liquid storage tank for recycling; The foam liquid at the top passes through the third separation membrane and reaches the foam liquid outlet pipe; when foam liquid is seen in the foam liquid outlet pipe, close the foam liquid inlet valve.

14. Use of the foam liquid transfer, delivery and storage container according to any one of claims 1 to 12 in a foam tanker at a fire extinguishing site.

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