KR20100121133A - Cargo handling system for high pressure liquid cargo using immiscible piston liquid and driving gas - Google Patents

Abstract

PURPOSE: A cargo handling system for high pressure liquid cargo using immiscible piston liquid and driving gas is provided to simplify loading and unloading works using piston liquid. CONSTITUTION: A cargo handling system for high pressure liquid cargo using immiscible piston liquid and driving gas comprises a freight container(100), a piston liquid storage(20), and a driving gas storage(30). The freight container accepts high pressure liquid cargo and connects to a freight receiving base(10) through a cargo valve(12). The piston liquid storage connects to the freight container through a piston liquid supply pipe(21) and receives piston liquid inside the freight container. The driving gas storage connects to the freight container through a drive gas pipe(31).

Description

Cargo Handling System for High Pressure Liquid Cargo Using Immiscible Piston Liquid and Driving Gas}

The present invention relates to cargo loading and unloading equipment using unmixed piston liquid and driving gas for conveying high pressure liquid cargo.

Hydrocarbons such as LPG (Liquefied Petroleum Gas) have a wide range of applications as fuels, and thus are transported to various points from the place of collection. Since these materials are gaseous at room temperature, they are generally transported by liquefying them for easy transportation. In order to liquefy the gas, a method of lowering the temperature or increasing the pressure is used. In the case of LPG, it is generally known that the liquid is liquefied by low temperature under atmospheric pressure rather than by high pressure during transportation.

An example of an LPG carrier carrying such a low temperature liquid cargo is shown in FIG. Is shown. As shown in FIG. 1, the low temperature liquid cargo carrier carries and transports the low temperature liquid cargo in a cargo tank (a portion indicated by a bold circumference and a hatched line in FIG. 1) that occupies almost the entire volume of the carrier. The cold liquid cargo thus conveyed is generally unloaded by pumping.

On the other hand, there is an example of a high-pressure cargo, such as CNG (Compressed Natural Gas), the CNG is in the gas state when transporting. Degree 2 shows the actual shape of the various CNG carriers. As shown in FIG. 2 (A), the CNG is accommodated in a special container made to withstand high pressure. Figure 3 is a simplified illustration of the unloading method used in the conventional CNG carrier. When unloading a conventional CNG carrier, as shown in FIG. 3, one side of the CNG vessel (as shown in FIG. 2A) is opened, and the other side of the CNG vessel is not mixed with CNG, such as ethylene glycol. The liquid which does not enter is pushed in and CNG is pushed out by ethylene glycol so that unloading is performed. As described above, since the CNG is in a gaseous state, when it is pushed out using a liquid such as ethylene glycol, almost no mixing occurs due to the difference in density. This principle can of course also be applied at the time of shipment.

By the way, in the past, LPG was transported in a low temperature atmospheric pressure state, but a need arises to transport it at room temperature and high pressure. Accordingly, there has been a problem in that the conventional method of using a pump at the time of loading or unloading liquid cargo under atmospheric pressure cannot be used as it is. Accordingly, there was a problem in that loading and unloading by using a pump but having to add a pressure regulator. In addition, in the case of using the pump, there is a possibility that the remaining cargo remains inside the container, and the purity of the newly shipped cargo may be lowered when the next shipment of other cargoes is carried out. There is a problem that requires a separate step. That is, the equipment for loading and unloading the high pressure liquid cargo is not sufficiently optimized at present.

In addition, using the principle of loading or unloading the CNG using the same method of pushing out with other liquids, there are the following problems. First, since CNG is a gas, it hardly mixes with each other due to density difference in the process of pushing out using another liquid. However, in the case of a liquid such as high pressure LPG, even if it is pushed into a liquid (for example, water) having a property that does not mix with each other, they are mixed with each other by physical effects such as high flow rate. Of course, the large mixed parts can be easily separated by the nature (density difference, etc.) that the liquids do not mix with each other, but it takes a very long time to separate when droplets (emulsions) occur in the liquid due to the high flow rate There is. In addition, if the separation time is reduced, there is a problem that the purity of the cargo sent out is lowered. Therefore, if you want to apply the principle of pushing the gas into the liquid (that is, when loading and unloading conventional CNG) and pushing the liquid into the liquid (for example, LPG in a high pressure liquid when loading and unloading with water) It is obvious that the above problems must be solved.

Korean Patent Laid-Open Publication No. 2009-0036361 ("LNG carrier having a pressure regulating device and a pressure regulating device when unloading an LNG carrier", hereinafter prior art 1), partially evaporates LNG in a LNG (Liquified Natural Gas) storage tank. As the internal pressure increases, there is disclosed a technology for liquid cargo unloading equipment including a pressure regulating device that controls the supply pressure of the evaporated gas when unloading from the LNG storage tank to the LNG receiving base. However, even in the case of the prior art 1, the actual loading and unloading itself is made by a pump, and in the case of LNG, even though the internal pressure increases due to the low temperature liquid cargo, the evaporation gas may be changed within a range that does not deviate significantly from atmospheric pressure. It is only about. However, in the case of the high-pressure liquid cargo to be dealt with in the present invention is a very high pressure of several times to several tens of atmospheric pressure bar, there is a problem such as safety, durability to apply the prior art 1 as it is.

Conventionally, in the case of the loading and unloading equipment of the CNG, the principle of pushing out using the liquid is used as described above, but the application of the same to the high pressure liquid cargo has the problem that the separation time increases and the purity of the cargo decreases because the liquids are mixed. . In addition, as described in Korean Patent Laid-Open Publication No. 2008-0031263 ("Method for Transporting and Storing Gas in Liquid Media", hereinafter, Prior Art 2), CNG is dissolved in a liquid solvent and transported, but is unloaded. There is also a method of separating the solvent from the solvent by evaporation and returning it back to the gas state to unload it. However, this method requires many steps such as dissolving CNG in a solvent, dehydrating CNG, separating the CNG from the solvent again, and unloading the separated CNG. There is a problem.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, and an object of the present invention is to push a high pressure liquid cargo into a vessel using a piston liquid (not mixed therewith) or to ship it from or from the vessel. High pressure, which can be pushed and unloaded, but by using a guide plate to suppress the generation of droplets and finally remove the droplets, thereby increasing the purity of the high pressure liquid cargo while reducing the separation time between the high pressure liquid cargo and the piston liquid. Provides cargo loading and unloading equipment using unmixed piston liquid and driving gas for liquid cargo transportation.

The cargo loading and unloading equipment using the unmixed piston liquid and the driving gas for transporting the high pressure liquid cargo of the present invention for achieving the above object, accommodates the high pressure liquid cargo, and receives the cargo through the cargo pipe 11 A cargo receiving container 100 connected to the base 10 for receiving or discharging cargo into the cargo by the cargo valve 12; Receives a piston liquid, and is connected to the cargo receiving container 100 through a piston liquid supply pipe 21 to supply the piston liquid into the cargo receiving container 100 by a piston liquid supply valve 22, or a piston liquid. A piston liquid receiver 20 for recovering the piston liquid in the cargo container 100 by a piston liquid recovery valve 24 through a recovery pipe 23; A drive gas accommodating part which accommodates a driving gas and is connected to the cargo receiving container 100 through the driving gas pipe 31 and supplies the driving gas into the cargo receiving container 100 by the driving gas valve 32. 30; Characterized in that comprises a. At this time, the cargo receiving container 100 is a main body 110 in which cargo is accommodated therein, and is provided in the main body 110 to guide the flow so that the cargo flows in a zigzag direction, but flows through the main flow. It is provided with a plurality of flow guide plate 120 having a relatively smaller area than the passage 121 and the flow passage 122 and formed with a droplet passage 122 for collecting and passing the droplets, and the position at which cargo is introduced and discharged. It characterized in that it comprises a droplet condensation plate 130 for condensing the droplet.

At this time, the cargo receiving container 100 is the body 110 is formed in a cylindrical shape and arranged vertically, the flow guide plate 120 is characterized in that it is arranged horizontally. Alternatively, the cargo container 100 is the main body 110 is composed of a plurality of cylindrical units, the cylindrical units are arranged horizontally and arranged in parallel and connected to each other by a connection unit 150, the flow guide plate 120 ) Is vertically disposed in the cylindrical unit. Alternatively, the cargo container 100 is the main body 110 is made of a housing in which a plurality of plates are horizontally stacked therein so that the cargo flows sequentially along the layer formed by the following plate, the flow guide plate 120 ) Is arranged vertically in the layer formed by the plate. At this time, the cargo receiving container 100 is characterized in that the intermediate passage 140 for connecting the cylindrical unit or the layer with each other is formed.

In addition, the cargo loading and unloading equipment is provided on the cargo piping 11 in a position between the cargo valve 12 and the cargo receiving base 10, separating the mixture of cargo and piston liquid, and the piston liquid A cargo-piston liquid separator 40 connected to the receiver 20 to recover the separated piston liquid; And further comprising:

In addition, the cargo loading and unloading equipment is provided on the cargo pipe (11) cargo transfer pump 50 for pumping cargo; A pipe bypassing the cargo transfer pump 50 and a bypass valve 51 provided thereto; And further comprising:

In addition, the cargo loading and unloading equipment is integrally formed with the piston liquid supply pipe 21 and the piston liquid recovery pipe 23, the piston liquid supply valve 22 and the piston liquid recovery valve 24 are integrated. Characterized in that formed.

According to the present invention, when the high pressure liquid cargo is loaded or unloaded, the process itself is simple by using the principle of pushing or pushing it by using a piston liquid, so that the loading and unloading can be made very easily. This principle has been used in the loading or unloading of the conventional gas, but was not used in the loading or unloading of the liquid due to the problem of mixing and droplet generation between the liquid cargo and the piston liquid, according to the present invention, by controlling the flow by using a guide plate There is an effect that can suppress the generation of droplets as much as possible, the technical significance is that this principle can be applied only to the liquid cargo. In addition, according to the present invention, not only the formation of droplets is suppressed by the guide plate, but also by the design elements such as the structure and the material of the guide plate itself, even if a small amount of droplets are generated, there is an effect of enabling rapid separation.

As described above, according to the present invention, when the liquid cargo is loaded and unloaded using the piston liquid, the liquid droplet can be quickly removed, and the separation time between the liquid cargo and the piston liquid can be drastically shortened, and also the purity of the liquid cargo can be improved. There is an effect that can be greatly increased.

In addition, according to the present invention, it is possible to utilize a part of the equipment conventionally used for loading and unloading the high-pressure gasoline cargo, there is also an economic effect that can greatly reduce the additional equipment cost. In addition, even for those who carry out loading and unloading, the operation process is not only simple but also similar to the process of loading and unloading high-pressure gaseous cargo. Therefore, the equipment of the present invention is very familiar and easily handled by such practitioners. It can also have the effect of maximizing user convenience.

Hereinafter, a cargo loading and unloading equipment using a non-mixed piston liquid and a driving gas for transporting a high pressure liquid cargo according to the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

4 and 5 are a first embodiment and a second embodiment of the loading and unloading equipment of the present invention. The two embodiments are dependent on the shape of the cargo container, the overall structure of the equipment is the same in both embodiments, the shipping and unloading equipment and thereby the loading and unloading method of the present invention will be described through FIG.

First, the loading and unloading equipment of the present invention is the cargo receiving container 100, the cargo receiving base 10, the piston liquid receiving portion 20 and the driving gas receiving portion 30, as shown in Figures 4 and 5 It is made, including.

The cargo accommodating container 100 accommodates the high pressure liquid cargo, and is connected to the cargo receiving base 10 through a cargo pipe 11 to receive or discharge cargo therein by a cargo valve 12. The shape of the cargo container 100 will be described in more detail later.

The piston liquid container 20 accommodates the piston liquid, and is connected to the cargo container 100 through a piston liquid supply pipe 21 to the cargo container 100 by a piston liquid supply valve 22. Piston liquid is supplied into it, or the piston liquid in the said cargo container 100 is collect | recovered by the piston liquid recovery valve 24 through the piston liquid recovery piping 23. FIG. At this time, the piston liquid supply pipe 21 and the piston liquid recovery pipe 23 may be formed separately as shown in FIGS. 4 and 5, but the piston liquid supply pipe (not shown) may be formed. 21 and the piston liquid recovery pipe 23 may be integrally formed. In other words, the piston liquid is supplied or recovered through a single pipe. When the pipe is integrated in this manner, the piston liquid supply valve 22 and the piston liquid recovery valve 24 may also be integrally formed.

The driving gas receiving unit 30 receives a driving gas and is connected to the cargo receiving container 100 through a driving gas pipe 31 and driven into the cargo receiving container 100 by a driving gas valve 32. Supply gas.

By the cargo loading and unloading equipment of the present invention configured as described above, cargo is unloaded according to the following steps. Initially all valves are closed, and first the cargo valve 12 and the piston liquid supply valve 22 are opened so that piston liquid flows into the cargo receiving vessel 100 to push the cargo out of the cargo. It is discharged to the receiving base 10. The piston liquid may be made of a liquid which does not mix or react with the high pressure liquid cargo contained in the cargo container 100, for example, when the cargo is LPG, the piston liquid may be water. .

When the piston liquid is continuously supplied to the cargo container 100 in this way, the cargo is pushed out by the piston liquid and all are discharged to the cargo receiving base 10, and the cargo container 100 is filled with the piston liquid. You lose. Thereafter, when the piston liquid is completely filled in the cargo container 100, the cargo valve 12 and the piston liquid supply valve 22 are closed.

At this time, the cargo receiving container 100 and the cargo receiving base 10 may be directly connected along the cargo pipe 11, as shown in Figures 4 and 5, the cargo valve 12 And a cargo-piston liquid separator 40 on the cargo piping 11 at a location between the cargo receiving base 10 and the cargo receiving base 10. The cargo-piston liquid separator 40 separates the mixture of the cargo and the piston liquid, and is connected to the piston liquid receiver 20 to recover the separated piston liquid. In other words, the cargo-piston liquid separator 40 is not necessarily required while the cargo is being pushed by the piston liquid, but the cargo-piston liquid meets almost to be pushed to the cargo receiving base 10 to waste the cargo. Can be minimized. At this time, the area where the cargo and the piston liquid meet physically may form a region where the cargo and the piston liquid are slightly mixed, and thus, there is a possibility that some of the mixture may flow into the cargo receiving base 10 in this process. There is a fear that the cargo purity in the cargo receiving base 10 is lowered. Therefore, it is desirable to ensure that the cargo pushed out last is separated from the piston liquid by passing through the cargo-piston liquid separator 40.

In addition, the cargo transfer pump 50 may be provided to better transport the cargo. In this case, since only the pure cargo is discharged at first, the cargo is quickly discharged using the cargo transfer pump 50. When the cargo is almost discharged, the operation of the cargo transfer pump 50 is stopped and the bypass valve 51 provided in the piping bypassing the cargo transfer pump 50 is opened to allow the cargo discharge pump to be discharged more slowly along the piping. . By doing this, the purity of the cargo discharged to the cargo receiving base 10 can be maintained high. Of course, in this case, if the cargo-piston liquid separator 40 is further provided in front of the cargo transfer pump 50, the purity of the cargo discharged to the cargo receiving base 10 may be more stably maintained.

After the cargo is completely discharged in this way, the cargo container 100 is filled with a piston liquid. Thereafter, the piston liquid recovery valve 24 and the driving gas valve 32 are opened, and a driving gas is introduced into the cargo accommodating container 100 to push out the piston liquid to be discharged to the piston liquid receiving part 20. . By doing so, the cargo accommodating container 100 is emptied so that the cargo can be shipped again.

By unloading the liquid cargo by using the piston liquid and the driving gas as described above, problems such as waste of cargo caused by the remaining of the cargo on the bottom of the cargo container in the process of simply unloading the liquid cargo by the pump in the past Can be removed.

6 to 8 show in more detail the cargo container of the present invention. As described in the prior art, the manner in which the piston liquid is used to push the cargo out of the cargo holding vessel in the manner shown in Figs. 4 and 5 is used in the gaseous cargo. However, in the case of liquid cargo (also as described in the prior art), the piston liquid and the cargo are mixed due to the high flow rate, which takes a lot of time to separate them by generating a large amount of liquid droplets, and thus for liquid cargo It is true that the method did not work.

In the present invention, this problem is fundamentally solved by specializing the structure of the cargo accommodating container 100 so as to suppress the occurrence of such droplets and finally removing the liquid droplets so as to be discharged from the cargo accommodating container 100.

First, as shown in FIGS. 6 to 8, the cargo receiving container 100 of the present invention includes a plurality of flow guide plates 120 provided in the main body 110 to guide the flow so that cargo flows in a zigzag direction. It is done by The flow guide plate 120 prevents the cargo from flowing through as it is in the longitudinal direction of the main body 100, thereby preventing mixing between the cargo and the piston liquid as well as suppressing droplet generation.

In particular, the flow guide plate 120 has a relatively smaller area than the flow passage 121 and the flow passage 122 through which the main flow passes, as shown in the example shown in FIG. The droplet passage 122 is formed to separate the main flow and the droplet so as to pass through the droplet. Since the droplet passage 122 has a smaller area than the flow passage 121, the partial flow rate of the flow passing through the droplet passage 122 becomes larger than the partial flow rate of the flow passing through the flow passage 121. Thus, the droplets are directed toward the droplet passageway 122 and consequently exit the droplet passageway 122. At this time, the direction in which the droplets are mainly drawn and the direction of the main flow cross each other, and the main flow direction is zigzag by the plurality of flow guide plates 120. As a result, a strong torsion stream occurs, and the droplets combine to grow gradually under the influence of the torsion stream. When the droplets are combined with each other and become larger than a predetermined amount, the properties of the droplets are weakened, so that the cargo and the piston liquid can be easily separated only by the density difference.

In addition, the cargo accommodating container 100 further includes a droplet condensing plate 130 provided at positions where cargo is introduced and discharged to coagulate the droplets. The droplet condensation plate 130 has the same shape as the example of FIG. 6 (B), and droplets in the flow passing through the droplet condensation plate 130 are condensed with each other to lose the properties of the droplets.

Thus, the cargo accommodating container 100 of this invention suppresses generation | occurrence | production of a droplet by making the flow zigzag by the said flow guide plate 120. FIG. In addition, even if a small amount of droplets are generated, the droplets passages 122 formed in the flow guide plate 120 and the droplet condensation plate 130 provided at both ends of the main body 110 to condense each other such droplets This results in loss of the properties of the droplets, ultimately allowing complete removal of the droplets in the cargo.

6 is a first embodiment of the cargo container 100 of the present invention, the main body 110 is formed in a cylindrical shape and arranged vertically, the flow guide plate 120 is arranged horizontally. The cargo receiving container 100 of the first embodiment may be provided in the equipment as shown in FIG. 4, in which case the required amount of piston liquid is increased by bundling the cargo receiving container 100 a predetermined number and working in sequence. Can be reduced. More detailed description is as follows. For example, when the cargo container 100 has a volume of X and the number is 100, the piston liquid needs to have a volume of 100X in order to work all at once. However, for example, by tying five of the cargo receiving containers 100, the cargo is unloaded (through the steps as described above) from the five cargo receiving containers 100, and the next five cargo receiving containers 100 are connected. Unloading cargo 20 times in a sequence, such as unloading the cargo in the piston liquid only needs 5X volume.

7 is a second embodiment of the cargo container 100 of the present invention, the main body 110 is composed of a plurality of cylindrical units, the cylindrical units are arranged horizontally and arranged in parallel and by the connecting portion 150 Connected to each other, the flow guide plate 120 is disposed vertically in the cylindrical unit. In addition, Figure 8 is a third embodiment of the cargo container 100 of the present invention, the main body 110 is a housing in which a plurality of plates horizontally stacked therein so that the cargo flows sequentially through the layer formed by the following plate In the form, the flow guide plate 120 is disposed vertically in the layer formed by the plate. In the second and third embodiments, the cylindrical unit or the layer is disposed horizontally, and the flow guide plate 120 is disposed vertically, which is generally almost the same shape. (However, in the case of the third embodiment, less space is generated than in the case of the second embodiment, so the space utilization is large.)

In the case of the second and third embodiments, unlike the first embodiment, an intermediate passage 140 connecting the cylindrical unit or the layer to each other may be further formed. In the case of the second and third embodiments, since the overall flow path of the cargo is much longer than that of the first embodiment, the amount of droplets condensed in the middle is more. As the amount of condensed droplets increases, there is a concern that the overall flow may be affected. Through the intermediate passage 140, the condensed droplets may flow directly to the upper portion, thereby smoothing the overall flow more smoothly. I can do it.

The present invention is not limited to the above-described embodiments, and the scope of application of the present invention is not limited to those of ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made.

1 to 3 is a conventional LPG / CNG transport and unloading method.

4 and 5 are the loading and unloading equipment of the present invention.

Figure 6 is a first embodiment of the cargo container of the present invention.

Figure 7 is a second embodiment of the cargo container of the present invention.

8 is a third embodiment of a cargo container of the present invention.

DESCRIPTION OF REFERENCE NUMERALS

10: cargo receiving base

11: cargo piping 12: cargo valve

20: piston liquid container

21: piston liquid supply piping 22: piston liquid supply valve

23: piston liquid recovery pipe 24: piston liquid recovery valve

30: driving gas container

31: drive gas piping 32: drive gas valve

40: cargo-piston liquid separator

41: cargo separation valve 42: piston liquid separation valve

50: cargo transfer pump 51: bypass valve

100: cargo container

110: main body 120: flow guide plate

121: flow passage 122: droplet passage

130: droplet condensing plate 140: intermediate passage

150: connection

Claims (9)

A cargo accommodating container 100 accommodating high-pressure liquid cargo and being connected to the cargo receiving base 10 through a cargo pipe 11 to receive or discharge cargo therein by a cargo valve 12; Receives a piston liquid, and is connected to the cargo receiving container 100 through a piston liquid supply pipe 21 to supply the piston liquid into the cargo receiving container 100 by a piston liquid supply valve 22, or a piston liquid. A piston liquid receiver 20 for recovering the piston liquid in the cargo container 100 by a piston liquid recovery valve 24 through a recovery pipe 23; A driving gas accommodation unit configured to receive a driving gas and to supply the driving gas into the cargo receiving container 100 by a driving gas valve 32 connected to the cargo receiving container 100 through a driving gas pipe 31; 30); Cargo loading and unloading equipment using a non-mixed piston liquid and driving gas for transporting high pressure liquid cargo, characterized in that comprises a. According to claim 1, wherein the cargo container 100 The main body 110 accommodates the cargo therein, and is provided in the main body 110 to guide the flow so that the cargo flows in a zigzag direction, but the flow passage 121 and the flow passage 122 through which the main flow passes. A plurality of flow guide plates 120 having a relatively small area and a droplet passage 122 for collecting and passing the droplets; Cargo loading and unloading equipment using a non-mixed piston liquid and driving gas for transporting high pressure liquid cargo comprising a. According to claim 2, wherein the cargo container 100 is The body 110 is formed in a cylindrical shape and arranged vertically, the flow guide plate 120 is a cargo loading and unloading equipment using a non-mixed piston liquid and driving gas for transporting high-pressure liquid cargo, characterized in that the horizontal arrangement . According to claim 2, wherein the cargo container 100 is The main body 110 is composed of a plurality of cylindrical units, the cylindrical units are arranged horizontally and arranged in parallel and connected to each other by a connecting portion 150, the flow guide plate 120 is disposed vertically in the cylindrical unit Cargo loading and unloading equipment using unmixed piston liquid and driving gas for transporting high pressure liquid cargo. According to claim 2, wherein the cargo container 100 is The main body 110 is formed of a housing in which a plurality of plates are horizontally stacked therein so that cargo flows sequentially through the layers formed by the following plates, and the flow guide plate 120 is vertical in the layers formed by the plates. Cargo loading and unloading equipment using a non-mixed piston liquid and driving gas for transporting high pressure liquid cargo, characterized in that arranged in. The method of claim 4 or 5, wherein the cargo container 100 is Cargo loading and unloading equipment using a non-mixed piston liquid and driving gas for transporting high-pressure liquid cargo, characterized in that the intermediate passage 140 is formed to connect the cylindrical unit or the layer to each other. The cargo loading and unloading equipment of claim 1, wherein It is provided on the cargo pipe 11 in the position between the cargo valve 12 and the cargo receiving base 10, to separate the mixture of the cargo and the piston liquid, and is connected to the piston liquid receiving portion 20 to separate A cargo-piston liquid separator 40 for recovering the recovered piston liquid; Cargo loading and unloading equipment using a non-mixed piston liquid and driving gas for transporting high-pressure liquid cargo, characterized in that further comprises. The cargo loading and unloading equipment of claim 1, wherein A cargo transfer pump 50 provided on the cargo pipe 11 to pump cargo; A pipe bypassing the cargo transfer pump 50 and a bypass valve 51 provided thereto; Cargo loading and unloading equipment using a non-mixed piston liquid and driving gas for transporting high-pressure liquid cargo, characterized in that further comprises. The cargo loading and unloading equipment of claim 1, wherein The piston liquid supply pipe 21 and the piston liquid recovery pipe 23 are integrally formed, and the piston liquid supply valve 22 and the piston liquid recovery valve 24 are integrally formed. Cargo loading and unloading equipment using unmixed piston liquid and drive gas for cargo transportation.

Images