CN114348947A - Flammable liquid collecting device and residual liquid treatment method of tank - Google Patents
Flammable liquid collecting device and residual liquid treatment method of tank Download PDFInfo
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- CN114348947A CN114348947A CN202111530348.8A CN202111530348A CN114348947A CN 114348947 A CN114348947 A CN 114348947A CN 202111530348 A CN202111530348 A CN 202111530348A CN 114348947 A CN114348947 A CN 114348947A
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Abstract
The invention discloses a flammable liquid collecting device and a residual liquid treatment method of a tank, wherein the flammable liquid collecting device comprises: a liquid storage barrel; the first pipeline is used for collecting flammable liquid to the liquid storage barrel; the second pipeline is used for inputting inert protective gas into the liquid storage barrel; a third pipeline for discharging the redundant gas in the liquid storage barrel; the liquid storage barrel is provided with a first input port matched with the first pipeline, a second input port matched with the second pipeline and an exhaust port matched with the third pipeline. The flammable liquid collecting device and the residual liquid treatment method of the tank can reduce the risk of flash explosion caused by collecting class A and class B liquids.
Description
Technical Field
The invention relates to the field of liquid containers, in particular to a flammable liquid collecting device and a residual liquid treatment method of a tank.
Background
An International Standard TANK (ISO TANK) is a stainless steel pressure vessel installed in a fastening outer frame, and a TANK body inner container is mostly made of 316 stainless steel. Most tanks have steam or electric heating means, inert gas shielding, pressure reduction and other optional equipment for fluid transport and handling. The periphery of the tank body is provided with a corner bearing frame which plays roles in protection and hoisting. The outer frame of the tank is exactly the same size as an international standard 20-foot container (20 feet long, 8 feet wide, 8 feet high, 6 inches high), and can be used for road, railway and water transportation.
After the goods of ISO TANK are unloaded, the goods need to be cleaned, and the residual liquid in the TANK is often collected into a collecting barrel before the cleaning. However, during collection, if a flammable liquid class a or flammable liquid class b was previously shipped in the tank, the residue may be subjected to flash explosion due to the air in the collection tank.
Disclosure of Invention
In view of the above, it is desirable to provide a flammable liquid collecting device and a method for treating residual liquid in a tank, which can reduce the risk of flash explosion caused by collecting class ab liquid.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a flammable liquid collecting device, where the flammable liquid collecting device includes:
a liquid storage barrel;
the first pipeline is used for collecting flammable liquid to the liquid storage barrel;
the second pipeline is used for inputting inert protective gas into the liquid storage barrel;
a third pipeline for discharging the redundant gas in the liquid storage barrel;
the liquid storage barrel is provided with a first input port matched with the first pipeline, a second input port matched with the second pipeline and an exhaust port matched with the third pipeline.
In the above scheme, the second input port is located at the top end of the side wall of the liquid storage barrel, and the first input port is located above the second input port.
In the scheme, the second pipeline penetrates through the inner wall of one side where the second input port is located to enter the inner cavity of the liquid storage barrel and extends towards the inner wall of the opposite side, and the extending length exceeds two thirds of the distance between the two opposite inner walls; the second pipeline is arranged at one section of the inner cavity of the liquid storage barrel and is provided with a plurality of protective gas output ports for outputting inert protective gas.
In the above scheme, a flow limiting component for limiting the flow of the inert shielding gas is arranged in the second pipeline.
In the above scheme, the liquid storage barrel is made of metal materials, and the liquid storage barrel is electrically connected with an electrostatic grounding wire.
In the above scheme, the first pipeline is provided with an observation window made of a light-transmitting material.
In the above scheme, the liquid storage barrel comprises a liquid level meter.
In the above scheme, the liquid storage barrel comprises a liquid discharge valve, and the liquid discharge valve is positioned at the bottom end of the side wall of the liquid storage barrel.
In the above scheme, the liquid storage barrel comprises a pressure gauge, and the pressure gauge is positioned at the upper part of the liquid storage barrel.
In the above scheme, the device comprises a movable supporting plate for bearing the liquid storage barrel, and the liquid storage barrel is arranged on the movable supporting plate; the bottom of the movable supporting plate is provided with a movable wheel.
In a second aspect, an embodiment of the present invention provides a method for treating raffinate in a tank, the method using any one of the flammable liquid collecting devices described above, the method comprising the steps of:
inputting inert protective gas into the liquid storage barrel through a second pipeline, and exhausting gas through a third pipeline;
after the inert protective gas is input into the liquid storage barrel, discharging residual liquid in the tank to the liquid storage barrel through a first pipeline;
and when the residual liquid in the tank is smaller than a preset value, stopping draining liquid, and cleaning the tank.
In the above-mentioned scheme, with the raffinate in the tank is passed through first pipeline arrange extremely the stock solution bucket includes:
and monitoring the inert protective gas in the liquid storage barrel, and when the concentration of the inert protective gas reaches a first preset value, beginning to discharge the residual liquid in the tank to the liquid storage barrel through the first pipeline.
The flammable liquid collecting device and the residual liquid treatment method of the tank comprise a liquid storage barrel, a first pipeline, a second pipeline and a third pipeline; the flammable liquid collecting device collects liquid through the first pipeline, and meanwhile, inert protective gas is input through the second pipeline, so that the risk of flash explosion of class A and class B liquids is reduced; meanwhile, inflammable gas generated by volatilization of class AB liquid is discharged through the third pipeline, and the risk of flash explosion is further reduced.
Other beneficial effects of the embodiments of the present invention will be further described in conjunction with the specific technical solutions in the detailed description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below. It should be understood that the drawings described below are only a part of the drawings of the embodiments of the present invention, and that other drawings may be obtained by those skilled in the art without inventive effort.
FIG. 1 is a schematic view of a flammable liquid collection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method for treating raffinate in a tank according to an embodiment of the present invention.
Description of reference numerals:
10. a liquid storage barrel; 11. a first input port; 111. a first valve; 12. a second input port; 121. a second valve; 13. an exhaust port; 131. a third valve; 14. a liquid level meter; 15. a drain valve; 16. a pressure gauge; 20. a first conduit; 21. an observation window; 30. a second conduit; 31. a flow restriction member; 40. a third pipeline; 50. moving the supporting plate; 51. a wheel; 60. a push-pull rod.
Detailed Description
To solve the problems in the prior art, an embodiment of the present invention provides a flammable liquid collecting device, including:
a liquid storage barrel;
a first conduit for collecting liquid to the liquid storage barrel;
the second pipeline is used for inputting inert protective gas into the liquid storage barrel;
a third pipeline for discharging the redundant gas in the liquid storage barrel;
the liquid storage barrel is provided with a first input port matched with the first pipeline, a second input port matched with the second pipeline and an exhaust port matched with the third pipeline.
The flammable liquid collecting device comprises a liquid storage barrel, a first pipeline, a second pipeline and a third pipeline; the flammable liquid collecting device collects liquid in the liquid storage barrel through the first pipeline, and meanwhile, inert protective gas is input through the second pipeline, so that the risk of flash explosion of class A and class B liquids is reduced; meanwhile, inflammable gas generated by volatilization of class AB liquid is discharged through the third pipeline, and the risk of flash explosion is further reduced.
The present embodiment also provides a method for treating a residual liquid in a tank using the flammable liquid collecting device described above, the method including the steps of:
inputting inert protective gas into the liquid storage barrel through a second pipeline, and exhausting gas through a third pipeline;
after the inert protective gas is input into the liquid storage barrel, discharging residual liquid in the tank box to the liquid storage barrel through the first pipeline;
and when the residual liquid in the tank is smaller than a preset value, stopping draining liquid, and cleaning the tank.
According to the method for treating the residual liquid in the tank box, provided by the embodiment of the invention, the residual liquid in the tank box is collected to the liquid storage barrel, and inert protective gas is input through the second pipeline, so that the risk of flash explosion of class A and class B liquid in the liquid storage barrel is reduced; simultaneously, still discharge through the third pipeline with the inflammable gas that class AB liquid volatilizees the production, further reduce the risk of flash explosion.
The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Also, the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from these embodiments without inventive step, are within the scope of protection of the present invention.
Example one
The present embodiment provides a flammable liquid collecting device, as shown in fig. 1, the flammable liquid collecting device includes a liquid storage barrel 10, a first pipeline 20, a second pipeline 30 and a third pipeline 40, wherein:
the liquid storage barrel 10 is used for containing liquid to be collected;
the first pipeline 20 is used for collecting liquid to the liquid storage barrel 10;
the second pipeline 30 is used for inputting inert protective gas into the liquid storage barrel 10;
the third pipeline 40 is used for discharging redundant gas in the liquid storage barrel 10;
the reservoir tank 10 has a first input port 11 adapted to the first pipe 20, a second input port 12 adapted to the second pipe 30, and an exhaust port 13 adapted to the third pipe 40.
Here, the liquid collected by the flammable liquid collecting device is, for example, residual liquid in a tank for transporting liquid cargo, i.e., cargo remaining after the tank is unloaded. Here, the TANK may be an ISO TANK, for example, and it is understood that other TANK may be used.
Here, the liquid storage tank 10 illustratively contains liquid to be collected, typically temporarily. After the liquid storage barrel 10 is fully collected, the liquid storage barrel needs to be transported to a designated place for professional treatment. Namely, the liquid storage barrel 10 only plays a role of transferring, and the residual liquid is temporarily stored. However, even if temporarily stored, the cargo containing the liquid a or the liquid b may be subjected to flash explosion during collection and temporary storage. Accordingly, it is necessary to provide corresponding measures, such as providing the second duct 30 and the third duct 40.
Here, for example, during the process of collecting the liquid by the first pipeline 20, the second pipeline 30 will continuously deliver inert shielding gas into the liquid storage barrel 10, so that the liquid entering the liquid storage barrel 10 through the first pipeline 20 cannot contact with enough air, and the risk of flash explosion can be reduced. In an exemplary manner, the first and second electrodes are,
here, for example, in the process of collecting the liquid by the first pipeline 20, the third pipeline 40 may discharge the gas in the liquid storage barrel 10, that is, part of flammable gas generated by volatilization of the class ab liquid may be discharged, so as to reduce the concentration of the flammable gas, and also greatly reduce the risk of flash explosion.
Here, the first input port 11, the second input port 12 and the exhaust port 13 may be provided with corresponding valves, which may be manual valves or automatic valves, for example. Illustratively, at the first input port 11 is a first valve 111, at the second input port 12 is a second valve 121, and at the exhaust port 13 is a third valve 131.
Here, it should be noted that, in the liquid collecting operation, the valve of the second pipe 30 should be opened, and it is ensured that the inert shielding gas is introduced into the liquid storage barrel 10 before the valve of the first pipe 20 is opened.
Here, the inert shielding gas input into the liquid storage barrel 10 through the second input port 12 is typically in a horizontal direction. Therefore, the liquid can be quickly diffused to the inner cavity of the liquid storage tank and can be uniformly distributed at all parts of the liquid storage tank.
The flammable liquid collecting device comprises a liquid storage barrel 10, a first pipeline 20, a second pipeline 30 and a third pipeline 40; the flammable liquid collecting device collects liquid through the first pipeline 20, and meanwhile, inert protective gas is input through the second pipeline 30, so that the risk of flash explosion of class-A and class-B liquids is reduced; meanwhile, flammable gas generated by volatilization of the class AB liquid is discharged through the third pipeline 40, so that the risk of flash explosion is further reduced.
According to an alternative embodiment of the present invention, the second input port 12 may be located at the top end of the side wall of the liquid storage tank 10, so as to avoid the liquid immersion of the protective layer formed by the inert shielding gas.
Illustratively, the first input port 11 is located above the second input port 12. Since the inert shielding gas is generally slightly lighter than air, such as nitrogen, and generally rises to the top of the interior of the tank 10, the first inlet 11 is above so that the incoming liquid can first contact the inert shielding gas, rather than air.
For example, the distance between the first input port 11 and the second input port 12 in the inner cavity of the liquid storage barrel 10 may be set within a preset range. That is, the closer the first input port 11 is to the second input port 12, the more inert shielding gas is contacted by the liquid entering the liquid storage barrel 10 through the first pipeline 20, and thus, the air cannot be contacted sufficiently, which is safer. Here, the predetermined range may be, for example, less than half of the width between the sidewall where the second input port of the liquid storage tub 10 is located and the opposite sidewall.
For example, the first input port 11 and the second input port 12 may be located on the same inner wall or adjacent inner walls of the liquid storage barrel 10 in the inner cavity of the liquid storage barrel 10. If the liquid storage barrel 10 is a rectangular tank, the adjacent inner walls can be two adjacent side walls, or a side wall and a top wall; if the reservoir is a round tank, the adjacent inner walls may be side walls and a top wall. Thus, the distance between the two is sufficiently close.
For example, the first input port 11 may be located on the top wall of the liquid storage barrel 10 in the inner cavity of the liquid storage barrel 10. Therefore, the distance between the first input port 11 and the second input port 12 is close enough, and the collected liquid enters the liquid storage barrel 10 from top to bottom more smoothly. Also, since the inert shielding gas is introduced in a substantially horizontal direction, the collected liquid and the inert shielding gas intersect substantially vertically, minimizing the amount of air that the collected liquid contacts. Here, the first input port 11 is exemplarily located on a side of the top wall of the liquid storage barrel 10 closer to the second input port 12.
According to an alternative embodiment of the present invention, the second pipe 30 passes through the inner wall of the side where the second input port 12 is located to enter the inner cavity of the liquid storage barrel 10 and extends to the inner wall of the opposite side for a length exceeding two thirds of the distance between the two opposite inner walls, for example, three quarters, four fifths, etc. Therefore, a protective layer of the inert protective gas distributed horizontally is easier to form, and the contact between the flammable liquid and the air is better blocked.
Illustratively, the second pipeline 30 is provided with a plurality of protective gas output ports for outputting inert protective gas at a section of the inner cavity of the liquid storage barrel 10. In this way, the distribution of the inert shielding gas can be made more uniform.
According to an alternative embodiment of the invention, a flow restriction member 31 may be provided in the second duct 30 to restrict the flow of inert shielding gas. Therefore, the large fluctuation of the flow of the inert protective gas is avoided, the large fluctuation of the concentration of the inert protective gas in the liquid storage barrel 10 is caused, and the risk is brought to the flash explosion of the flammable liquid. Here, the flow restricting part 31 may be a flow restricting orifice plate, for example. The flow-limiting orifice plate has the advantages of simple structure, easy processing, low manufacturing cost, convenient installation and the like, and on the premise of meeting the technological requirements, the flow-limiting orifice plate is used for limiting the flow or reducing the pressure instead of a regulating valve, so that the investment, operation and maintenance cost can be reduced.
For example, the flow restriction member 31 may be located at one end of the second pipe 30 near the liquid storage barrel 10. Thus, the inert protective gas entering the liquid storage barrel 10 is more stable.
Illustratively, the second conduit 30 may be made of DN25 pipe, i.e., pipe with an inner diameter of 25mm, so as to meet the flow requirement of inert shielding gas and have low cost. The number of orifices on the restriction orifice plate may be set according to the size of the inner diameter of the pipe.
For example, the inert shielding gas may be nitrogen, and the other end of the second pipe 30, which is connected to the liquid storage barrel 10, may be connected to a nitrogen generator.
According to an alternative embodiment of the present invention, the liquid storage barrel 10 may be made of metal, and an electrostatic grounding wire (not shown in the figures) is connected to the bottom of the liquid storage barrel 10. Therefore, static electricity can be guided to the ground, and flash explosion caused by the static electricity is reduced. Here, the reservoir 10 may be made of stainless steel 304, for example. Stainless steel 304 has both good strength and good corrosion resistance.
According to an alternative embodiment of the invention, said first duct 20 is provided with a viewing window 21 made of a light-transmissive material. In this way, the conditions of the collected liquid, such as flow rate, etc., can be clearly seen. And further, whether the residual liquid in the tank is little or not can be determined, and whether the liquid collection work can be stopped or not can be determined.
Illustratively, the observation window 21 may be located at one end of the first pipe 20 close to the liquid storage barrel 10. Thus, the observed liquid condition is closer to the liquid condition flowing into the liquid storage barrel 10, and the observation is more targeted.
For example, the first pipe 20 may be provided with a water pump for collecting liquid, so as to smoothly collect the residual liquid in the tank to the liquid storage barrel 10.
According to an alternative embodiment of the present invention, the reservoir 10 may include a liquid level gauge 14. Therefore, the liquid level in the liquid storage barrel 10 can be clearly known, and when the liquid level in the liquid storage barrel 10 is very high, the liquid collection work can be stopped in time.
Illustratively, the level gauge 14 may be located on either side of the reservoir 10, which facilitates fluid level viewing. It will be appreciated that the level gauge 14 may also be mounted on two or more sides, so that the level indication is more intuitive. Illustratively, the fluid level gauge 14 may be designed and manufactured using the principle of a communicator.
According to an alternative embodiment of the present invention, the reservoir 10 may include a drain valve 15. Thus, the liquid storage barrel 10 can be transported to a designated place for disposal after being fully filled with liquid. Therefore, a drain valve 15 is required to facilitate the discharge of the liquid in the liquid storage tank 10.
Illustratively, the drain valve 15 may be located at the bottom end of the sidewall of the reservoir tank 10. Thus, the opening or closing is more convenient, and the discharge is smooth.
According to an alternative embodiment of the present invention, the reservoir tank 10 may include a pressure gauge 16, and the pressure gauge 16 is located at an upper portion of the reservoir tank 10. In this way, the risk of excessive pressure in the reservoir 10 is avoided. Illustratively, the pressure gauge 16 may be a stainless steel corrosion resistant diaphragm pressure gauge. The stainless steel corrosion-resistant diaphragm pressure gauge has stronger corrosion resistance. The device is mainly used for measuring gas and liquid pressure in chemical, petroleum and textile industries.
According to an alternative embodiment of the invention, the device comprises a movable supporting plate 50 for bearing the liquid storage barrel 10, wherein the liquid storage barrel 10 is arranged on the movable supporting plate 50; the bottom of the moving plate 50 is provided with a movable wheel 51. Therefore, the liquid in the liquid storage barrel 10 is fully collected, and can be conveniently moved to a designated place for processing, and the operation is more convenient. Illustratively, the wheels 51 may be functional with locking or braking.
According to an alternative embodiment of the present invention, the device may include a push-pull rod 60 for pushing and pulling the movable plate 50, and the lower end of the push-pull rod 60 is fixed to one end of the movable plate 50. Therefore, the liquid storage barrel 10 is convenient to move manually, and the operation is more convenient.
Example two
The present embodiment provides a method for treating residual liquid in a tank, the method using the flammable liquid collecting device according to the first embodiment, as shown in fig. 2, the method comprising the steps of:
step 201: inert shielding gas is input into the liquid storage barrel 10 through the second pipeline 30, and meanwhile, gas is exhausted through the third pipeline 40;
step 202: after the inert shielding gas is input into the liquid storage barrel 10, discharging residual liquid in the tank to the liquid storage barrel 10 through a first pipeline 20;
step 203: and when the residual liquid in the tank is smaller than a preset value, stopping draining liquid, and cleaning the tank.
Here, for example, in step 201, the inert shielding gas is input into the liquid storage barrel 10 and simultaneously the third pipeline 40 is exhausted, so that the gas in the liquid storage barrel 10 is gradually replaced by the inert shielding gas, that is, the concentration of the inert shielding gas is increased.
Here, for example, in the step 202, since the residual liquid in the tank is flammable liquid, it is necessary to start discharging the residual liquid in the tank to the tank 10 after the inert shielding gas is input into the tank 10.
Here, for example, in step 203, the residual liquid in the tank is smaller than the preset value, and the judgment can be made through the observation window 21, for example, the flow rate is small, etc
According to the method for treating the residual liquid in the tank, the residual liquid in the tank is collected into the liquid storage barrel, and inert protective gas is input through the second pipeline 30, so that the risk of flash explosion of class A and class B liquid in the liquid storage barrel 10 is reduced; meanwhile, flammable gas generated by volatilization of the class AB liquid is discharged through the third pipeline 40, so that the risk of flash explosion is further reduced.
According to an alternative embodiment of the present invention, the discharging the residual liquid in the tank to the liquid storage barrel 10 through the first pipeline 20 comprises:
and monitoring the inert protective gas in the liquid storage barrel 10, and when the concentration of the inert protective gas reaches a first preset value, beginning to discharge the residual liquid in the tank to the liquid storage barrel 10 through the first pipeline 20. The first preset value here may be 99.6% or more, for example, 99.6%, 99.65%, 99.68%, 99.7%, etc. For example, since the gas distribution in the whole liquid storage barrel is not completely uniform, the concentration can be the concentration of the area where the monitoring part is located, and the area where the monitoring part is located is also the position where the residual liquid is input, so that the monitoring is more targeted.
The above description of the method embodiment, similar to the above description of the apparatus embodiment, has similar beneficial effects as the apparatus embodiment. For technical details not disclosed in the method embodiments of the present invention, reference is made to the description of the embodiments of the apparatus of the present invention for understanding.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the description of the embodiments of the present invention, the term "connected" should be interpreted broadly unless otherwise indicated and limited. For example, the two elements may be electrically connected, or may be connected through an intermediate member, directly or indirectly. The specific meaning of the above terms can be understood by those of ordinary skill in the art as appropriate.
In the embodiments of the present invention, if the terms "first \ second \ third" are used, they are only used to distinguish similar objects, and do not represent a specific ordering for the objects. It is to be understood that the terms first, second, and third, where permissible, are interchangeable in particular order or sequences.
The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various possible combinations of the specific features of the invention will not be described further.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (12)
1. A flammable liquid collecting device, comprising:
a liquid storage barrel;
the first pipeline is used for collecting flammable liquid to the liquid storage barrel;
the second pipeline is used for inputting inert protective gas into the liquid storage barrel;
a third pipeline for discharging the redundant gas in the liquid storage barrel;
the liquid storage barrel is provided with a first input port matched with the first pipeline, a second input port matched with the second pipeline and an exhaust port matched with the third pipeline.
2. The flammable liquid collecting device of claim 1, wherein the second inlet is located at a top end of the side wall of the reservoir and the first inlet is located above the second inlet.
3. The flammable liquid collecting device according to claim 1 or 2, wherein the second pipe passes through the inner wall of the side where the second input port is located, enters the inner cavity of the liquid storage barrel, and extends towards the inner wall of the opposite side, and the length of the extension exceeds two thirds of the distance between the two opposite inner walls; the second pipeline is arranged at one section of the inner cavity of the liquid storage barrel and is provided with a plurality of protective gas output ports for outputting inert protective gas.
4. The flammable liquid collecting device according to claim 1 or 2, wherein a flow restriction member limiting the flow of inert shielding gas is arranged in the second duct.
5. The flammable liquid collecting device of claim 1 or 2, wherein the liquid storage barrel is made of a metal material, and the liquid storage barrel is electrically connected with an electrostatic grounding wire.
6. A flammable liquid collecting device according to claim 1 or 2, characterised in that the first duct is provided with a viewing window made of a light-transmitting material.
7. The flammable liquid collecting device of claim 1 or 2, wherein the reservoir comprises a liquid level gauge.
8. The flammable liquid collecting device of claim 1 or 2, wherein the reservoir comprises a drain valve located at a bottom end of a side wall of the reservoir.
9. The flammable liquid collecting device of claim 1 or 2, wherein the reservoir comprises a pressure gauge located in an upper portion of the reservoir.
10. The flammable liquid collecting device according to claim 1 or 2, wherein said device comprises a mobile pallet for carrying said reservoir, said reservoir being arranged on said mobile pallet; the bottom of the movable supporting plate is provided with a movable wheel.
11. A method for treating a residual liquid in a tank using the flammable liquid collecting device according to any one of claims 1 to 10, comprising the steps of:
inputting inert protective gas into the liquid storage barrel through a second pipeline, and exhausting gas through a third pipeline;
after the inert protective gas is input into the liquid storage barrel, discharging residual liquid in the tank to the liquid storage barrel through a first pipeline;
and when the residual liquid in the tank is smaller than a preset value, stopping draining liquid, and cleaning the tank.
12. The method of treating a residual liquid in a tank according to claim 11, wherein said discharging the residual liquid in the tank to the tank through the first pipe comprises:
and monitoring the inert protective gas in the liquid storage barrel, and when the concentration of the inert protective gas reaches a first preset value, beginning to discharge the residual liquid in the tank to the liquid storage barrel through the first pipeline.
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| CN111960383A (en) * | 2020-08-21 | 2020-11-20 | 恒力石化（大连）有限公司 | Residual liquid recovery system of PTA hydrogen recovery device |
| CN213324857U (en) * | 2020-08-25 | 2021-06-01 | 深圳市金色盆地科技有限公司 | Sealed storage structure of liquid extract |
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