EGD dosing system and LNG receiving station

Abstract

The utility model provides an EGD dosing system and an LNG receiving station. The EGD dosing system comprises an EGD tank, a first pump, a first dosing pipe, a first standby pump, a standby dosing pipe and a seawater pool. And the first pump is connected with the EGD tank. And the first feeding pipe is connected with the first pump. The first standby pump is connected with the EGD tank and used for being started when the first pump is maintained. And the standby adding pipe is connected with the first standby pump and the first adding pipe. And the seawater pool is connected with the first adding pipe. The problem that in an existing dosing system, when an EGD pump is maintained, EGD supply is insufficient is solved.

Description

Technical Field

[0001] The present application relates to the technical field of dosing devices, and in particular to an EGD dosing system and an LNG receiving station. Background Art

[0002] The main function of IFV (Intertermidiate Fluid Vaporizar) is to use a seawater pump to transport seawater at a rated flow rate and room temperature through a pipeline to vaporize LNG at -160°C to produce natural gas. Seawater is particularly important for the gasification capacity of IFV. After the IFV has been used for a period of time, the flow rate of seawater will be lower than the rated flow rate, causing the vaporization capacity of the IFV to be lower than the design value. The inventors found through investigation that the reason why the flow rate of seawater entering the IFV is lower than the rated flow rate is that there are more marine organisms such as barnacles at the entrance of the IFV. In order to kill marine organisms such as barnacles, EGD (Environmentally Friendly and Green Disinfectant) can be added to the seawater inlet of the IFV.

[0003] Existing EGD is pumped into a seawater tank via an EGD pump, then transported to the IFV's seawater inlet via a seawater transport pump. When the EGD pump experiences a problem and requires maintenance, the EGD supply is insufficient, rendering the dosing system inoperable. Consequently, existing dosing systems face the problem of insufficient EGD supply during EGD pump maintenance. Utility Model Content

[0004] The present application aims to provide an EGD dosing system that prevents EGD supply shortages during maintenance of a first pump, comprising an EGD tank, a first pump, a first dosing pipe, a first backup pump, a backup dosing pipe, and a seawater tank. The first pump is connected to the EGD tank. The first dosing pipe is connected to the first pump. The first backup pump is connected to the EGD tank and is configured to be turned on during maintenance of the first pump. The backup dosing pipe is connected to the first backup pump and the first dosing pipe. The seawater tank is connected to the first dosing pipe.

[0005] Optionally, the EGD dosing system further includes a second pump and a second dosing pipe, the second pump is connected to the EGD tank, the second dosing pipe is connected to the second pump, the spare dosing pipe and the seawater pool, and the second pump is used to be turned on when the seawater pool supplies seawater containing EGD to multiple IFVs.

[0006] Optionally, the EGD dosing system further includes a third pump and a third dosing pipe, the third pump is connected to the EGD tank, the third dosing pipe is connected to the third pump, the standby dosing pipe and the seawater pool, and the third pump is used to be turned on when the seawater pool supplies seawater containing EGD to multiple IFVs.

[0007] Optionally, the EGD dosing system also includes a first liquid outlet pipe network, the four ports of the first liquid outlet pipe network away from the EGD tank are respectively connected to the first pump, the second pump, the third pump and the first backup pump, and the other end of the first liquid outlet pipe network is connected to the EGD tank.

[0008] Optionally, the EGD dosing system also includes a return pipe network, which is connected to the first dosing pipe, the second dosing pipe, the third dosing pipe and the standby dosing pipe, and the end of the return pipe network away from the first pump, the second pump, the third pump and the first standby pump is connected to the EGD tank.

[0009] Optionally, the first dosing pipe, the second dosing pipe, and the third dosing pipe are connected to each other at the same connection point.

[0010] Optionally, the EGD dosing system further includes a flushing pipe network, which is connected to the first dosing pipe, the second dosing pipe, the third dosing pipe and the spare dosing pipe.

[0011] Optionally, the EGD dosing system further includes a trench, the trench is connected to the bottom of the EGD tank, and the flushing pipe network is connected to the top of the EGD tank.

[0012] The present application also provides an LNG receiving station, comprising:

[0013] The EGD dosing system;

[0014] A plurality of seawater transport pumps, wherein the seawater pool is connected to the plurality of seawater transport pumps;

[0015] a second liquid outlet pipe network connected to the plurality of seawater transport pumps; and

[0016] There are multiple IFVs, and the second liquid outlet pipe network is connected to the multiple IFVs.

[0017] Optionally, the LNG receiving station further includes a second backup pump, which is connected to the seawater tank and the second liquid outlet pipeline respectively, and the second backup pump is used to be started when the seawater transport pump is repaired.

[0018] The beneficial effects of the present application are as follows: an EGD tank, a first pump, a first dosing pipe, a first backup pump, a backup dosing pipe, and a seawater tank are provided. The first pump is connected to the EGD tank. The first dosing pipe is connected to the first pump. The first backup pump is connected to the EGD tank, and the first backup pump is configured to be activated when the first pump is under maintenance. The backup dosing pipe is connected to the first backup pump and the first dosing pipe. The seawater tank is connected to the first dosing pipe.

[0019] Since the backup dosing pipe is connected to the first backup pump and the first dosing pipe, the first backup pump is used to be turned on when the first pump is repaired. In this way, the first backup pump can continue to provide EGD when the first pump is repaired, thereby preventing lack of EGD supply.

[0020] The above description is only an overview of the technical solution of this application. In order to more clearly understand the technical means of this application and implement it in accordance with the contents of the specification, the following is a detailed description of this application with the preferred embodiments of the application and in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a fluid circuit diagram of the EGD dosing system in the first embodiment of the present application;

[0022] Figure 2 The EGD dosing line diagram of the LNG receiving station in the second embodiment of the present application (the EGD dosing pumps and pipelines only show the first pump, the first dosing pipe, a seawater transport pump, and an IFV); and

[0023] Figure 3 This is a fluid circuit diagram of the second backup pump, the second liquid outlet network, the seawater transport pump and the IFV in the second embodiment of the present application.

[0024] Wherein, the reference numerals:

[0025] 101IFV

[0026] 102 Seawater Drainage Channel

[0027] 103 Second liquid outlet network

[0028] 104 seawater transport pump

[0029] 107 sea pool

[0030] 108 first dosing pipe

[0031] 109 First Pump

[0032] 110 EGD cans

[0033] 111 Suction pump

[0034] 112 EGD raw material barrel

[0035] 113 Second dosing pipe

[0036] 114 Second Pump

[0037] 115 Third dosing pipe

[0038] 116 Third Pump

[0039] 117 spare dosing pipe

[0040] 118 first backup pump

[0041] 119 first liquid outlet network

[0042] 120 Ditch

[0043] 121 Flushing pipe network

[0044] 122 Return pipe network

[0045] 123 Second backup pump

[0046] P connection point DETAILED DESCRIPTION

[0047] The following describes the implementation of the present application through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0048] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of this application will be clearly and completely described below in combination with the drawings in the embodiments of this application. Obviously, the described embodiments are only embodiments of a part of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application.

[0049] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or precedence. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0050] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0051] First embodiment

[0052] Please also refer to Figure 1 and Figure 2 In this embodiment, an EGD dosing system is provided, including an EGD tank 110, a first pump 109, a first dosing pipe 108, a first standby pump 118, a standby dosing pipe 117, and a seawater tank 107. The first pump 109 is connected to the EGD tank 110. The first dosing pipe 108 is connected to the first pump 109. The first standby pump 118 is connected to the EGD tank 110 and is configured to be turned on when the first pump 109 is under maintenance. The standby dosing pipe 117 is connected to the first standby pump 118 and the first dosing pipe 108. The seawater tank 107 is connected to the first dosing pipe 108.

[0053] like Figure 1 As shown, since the backup dosing pipe 117 is connected to the first backup pump 118 and the first dosing pipe 108, the first backup pump 118 is used to be turned on when the first pump 109 is repaired. In this way, when the first pump 109 is repaired, the first backup pump 118 can continue to provide EGD, thereby preventing a lack of EGD supply.

[0054] Please also refer to Figure 1 and Figure 2 EGD (Environmentally Friendly and Green Disinfectant, environmentally friendly seawater biocide, the same below) can be a non-oxidizing biocide mainly composed of cationic surfactants. The EGD tank 110 can be a stainless steel tank, which includes a scale for measuring EGD. The seawater pool 107 can be a reinforced concrete structure. The seawater pool 107 can be connected to the sea through a pipeline, and the liquid level of the seawater pool 107 can be consistent with the seawater level in the sea. The first pump 109 and the EGD tank 110 can be connected by a plastic pipe or a stainless steel pipe. The first addition pipe 108 and the first pump 109 can be connected by flange connection, clamping or threaded connection. The first standby pump 118 and the EGD tank 110 can be connected by a pipeline such as a stainless steel pipe or a seamless steel pipe.

[0055] like Figure 1As shown, when first pump 109 is under maintenance, first backup pump 118 can be manually activated. Alternatively, it can be activated by a controller, that is, upon receiving a maintenance signal from first pump 109, the controller can control first backup pump 118 to be activated. Backup injection pipe 117 and first backup pump 118 can be connected by a flange connection, a clamping connection, or a threaded connection. Backup injection pipe 117 and first injection pipe 108 can be connected by a threaded connection or welding.

[0056] Please also refer to Figure 1 and Figure 2 Optionally, the EGD dosing system further includes a second pump 114 and a second dosing pipe 113. The second pump 114 is connected to the EGD tank 110. The second dosing pipe 113 is connected to the second pump 114, a spare dosing pipe 117, and the seawater tank 107. The second pump 114 is configured to be turned on when the seawater tank 107 supplies seawater containing EGD to the multiple IFVs 101. With this configuration, the second pump 114 can be turned on to prevent a shortage of EGD-containing seawater when the water level in the seawater tank 107 drops too quickly (for example, when 1 to 7 IFVs 101 need to dosing EGD).

[0057] Please also refer to Figure 1 and Figure 2 The second pump 114 and the EGD tank 110 can be connected by a plastic pipe or a stainless steel pipe. The second dosing pipe 113 and the second pump 114 can be connected by a flange connection, a clamping connection, or a threaded connection. The second dosing pipe 113 and the spare dosing pipe 117 can be connected by a threaded connection or welding. The second pump 114 can be manually turned on when multiple IFVs 101 are connected to the seawater pool 107. Alternatively, the controller can control the second pump 114 to turn on when it receives a signal indicating that multiple IFVs 101 are connected. The IFV 101 (intertermidiate fluid vaporizer) can be a propane intermediate medium vaporizer.

[0058] Please also refer to Figure 1 and Figure 2 Optionally, the EGD dosing system further includes a third pump 116 and a third dosing pipe 115. The third pump 116 is connected to the EGD tank 110. The third dosing pipe 115 is connected to the third pump 116, the spare dosing pipe 117, and the seawater pool 107. The third pump 116 is used to start when the seawater pool 107 supplies seawater containing EGD to multiple IFVs 101. With this arrangement, when the water level in the seawater pool 107 drops too quickly (for example, when there are more than 8 IFVs 101 that need to dosing EGD), the third pump 116 can be turned on to prevent a shortage of seawater containing EGD. When the number of IFVs 101 connected exceeds 8, the first pump 109, the second pump 114, and the third pump 116 all need to be turned on.

[0059] Please also refer to Figure 1 and Figure 2 The third pump 116 and the EGD tank 110 can be connected via a plastic pipe or a stainless steel pipe. The third dosing pipe 115 and the third pump 116 can be connected via a flange connection, a clamping connection, or a threaded connection. The third dosing pipe 115 and the backup dosing pipe 117 can be connected via a threaded connection or welding. The third pump 116 can be manually turned on when multiple IFVs 101 are connected to the seawater tank 107. Alternatively, the controller can control the third pump 116 to turn on when it receives a signal indicating that multiple IFVs 101 have been connected.

[0060] Please also refer to Figures 1 to 3 The first pump 109, the second pump 114, the first backup pump 118, and the third pump 116 can be motor-driven plunger pumps or screw pumps. The first pump 109, the second pump 114, the first backup pump 118, the third pump 116, the second backup pump 123, and the seawater transport pump 104 can be electrically connected to the controller via wires. The first dosing pipe 108, the second dosing pipe 113, the third dosing pipe 115, and the backup dosing pipe 117 can be stainless steel pipes or seamless steel pipes.

[0061] Please also refer to Figures 1 to 2 The ends of the first dosing pipe 108, the second dosing pipe 113, and the third dosing pipe 115 can be embedded in the water inlet of the seawater tank 107. The first dosing pipe 108, the second dosing pipe 113, and the third dosing pipe 115 are used to dose EGD into the seawater tank 107. The first pump 109, the second pump 114, the first backup pump 118, and the third pump 116 are connected in parallel. In other words, if any of the first pump 109, the second pump 114, or the third pump 116 needs maintenance, the first backup pump 118 can be activated as a replacement.

[0062] like Figure 1 As shown, the EGD dosing system optionally further includes a first liquid outlet network 119. The four ports of the first liquid outlet network 119 away from the EGD tank 110 are respectively connected to the first pump 109, the second pump 114, the third pump 116, and the first backup pump 118. The other end of the first liquid outlet network 119 is connected to the EGD tank 110. This configuration avoids providing multiple liquid outlet locations on the EGD tank 110 and reducing the sealing performance of the EGD tank 110.

[0063] like Figure 1As shown, the four ports on the right side of the first liquid outlet pipe network 119 can be connected to the first pump 109, the second pump 114, the third pump 116, and the first backup pump 118, respectively, by means of flange connections, clamping connections, or threaded connections. The left end of the first liquid outlet pipe network 119 can be connected to the bottom of the EGD tank 110 by means of welding, clamping connections, or threaded connections. The first liquid outlet pipe network 119 is used to transport the EGD in the EGD tank 110 to the first pump 109, the second pump 114, the first backup pump 118, and the third pump 116.

[0064] like Figure 1 As shown, the EGD dosing system optionally further includes a return pipe network 122, which is connected to the first dosing pipe 108, the second dosing pipe 113, the third dosing pipe 115, and the backup dosing pipe 117. One end of the return pipe network 122 away from the first pump 109, the second pump 114, the third pump 116, and the first backup pump 118 is connected to the EGD tank 110. With this arrangement, when the first dosing pipe 108, the second dosing pipe 113, and the third dosing pipe 115 do not need to dosing EGD, EGD can be allowed to flow back to the EGD tank 110, thereby preventing the first pump 109, the second pump 114, the third pump 116, and the first backup pump 118 from being blocked.

[0065] like Figure 1 As shown, the four ports on the right side of the return pipe network 122 can be connected to the first dosing pipe 108, the second dosing pipe 113, the third dosing pipe 115, and the backup dosing pipe 117, respectively, by welding or threading. The left side of the return pipe network 122 can be connected to the top of the EGD tank 110 by welding or threading. The return pipe network 122 can be made of stainless steel pipe or seamless steel pipe. The return pipe network 122 is used to return the EGD in each dosing pipe to the EGD tank 110 when EGD is not being added to the first dosing pipe 108, the second dosing pipe 113, the third dosing pipe 115, and the backup dosing pipe 117.

[0066] Please also refer to Figure 1 and Figure 2 Optionally, the first dosing pipe 108, the second dosing pipe 113, and the third dosing pipe 115 are connected to each other at the same connection point P. Figure 1 As shown, the right ends of the first dosing pipe 108, the second dosing pipe 113, and the third dosing pipe 115 can be connected at a connection point P and then connected to the seawater tank 107 through the same pipeline. This arrangement allows the EGD transported by the first dosing pipe 108, the second dosing pipe 113, and the third dosing pipe 115 to converge at the same connection point P and be transported to the seawater tank 107 through a single pipeline, avoiding the need to open multiple connection locations in the seawater tank 107 and simplifying pipeline construction.

[0067] like Figure 1As shown, optionally, the EGD dosing system further includes a flushing network 121, which is connected to the first dosing pipe 108, the second dosing pipe 113, the third dosing pipe 115, and the spare dosing pipe 117. The flushing network 121 is used to provide materials (for example, water) to replace the EGD in each pipe when the EGD dosing system is overhauled. The four ports on the right side of the flushing network 121 can be connected to the first dosing pipe 108, the second dosing pipe 113, the third dosing pipe 115, and the spare dosing pipe 117 respectively by welding or threaded connection. The flushing network 121 can be made of stainless steel pipes or seamless steel pipes.

[0068] like Figure 1 As shown, optionally, the EGD dosing system further includes a trench 120, which is connected to the bottom of the EGD tank 110, and a flushing pipe network 121 is connected to the top of the EGD tank 110. The flushing pipe network 121 is used in conjunction with the trench 120 to provide materials (e.g., water) to flush and discharge residual EGD in the EGD tank 110 into the trench 120 during a major overhaul of the EGD dosing system. The EGD tank 110 can be connected to the trench 120 via a pipe. The flushing pipe network 121 can be connected to the top of the EGD tank 110 by welding or threaded connection.

[0069] Second embodiment

[0070] Please also refer to Figure 2 and Figure 3 In this embodiment, an LNG receiving station is provided, comprising multiple seawater transport pumps 104, a second liquid outlet pipeline network 103, multiple IFVs 101, and the EGD dosing system of the first embodiment. A seawater tank 107 is connected to the multiple seawater transport pumps 104. The second liquid outlet pipeline network 103 is connected to the multiple seawater transport pumps 104. The second liquid outlet pipeline network 103 is connected to the multiple IFVs 101. The second liquid outlet pipeline network 103 is configured to simultaneously connect the multiple IFVs 101 and the multiple seawater transport pumps 104, thereby simultaneously providing EGD-containing seawater to the multiple IFVs 101.

[0071] Please also refer to Figure 2 and Figure 3 An LNG (Liquefied Natural Gas) receiving station is a transit hub that receives liquefied natural gas (LNG) transported by sea vessels, stores it, re-vaporizes it, and then delivers it to users. The second liquid outlet pipeline network 103 can be made of steel-lined concrete to prevent seawater corrosion. The seawater tank 107 and the multiple seawater transport pumps 104 can be connected by pipelines. Each seawater transport pump 104 and each second backup pump 123 can also be immersed in the seawater tank 107. The second liquid outlet pipeline network 103 and the multiple seawater transport pumps 104 can be connected by threading or welding.

[0072] Please also refer to Figure 2 and Figure 3 For example, the second outlet pipe network 103 can include multiple inlets, each corresponding to a seawater transport pump 104. The second outlet pipe network 103 can include multiple outlets, each corresponding to an IFV 101. The second outlet pipe network 103 can be connected to the multiple IFVs 101 by threading or welding. The seawater transport pump 104 is used to pump seawater containing EGD through the second outlet pipe network 103 to the seawater inlet of the IFV 101.

[0073] Please also refer to Figure 2 and Figure 3 The number of IFVs 101 may be 7. The number of seawater transport pumps 104 may be 7, and the number of second backup pumps 123 may be 2. Figure 3 The first seven pumps from the left in the center can be seawater transport pumps 104, and the eighth and ninth pumps can be second backup pumps 123. Seawater transport pumps 104 can be connected to the seawater inlet of IFV 101 to deliver seawater containing EGD to the seawater inlet of IFV 101. After EGD is added to seawater tank 107, the EGD concentration must be maintained above 6 parts per million (PPM). EGD is added at the lowest daily tide level to minimize the negative impact of the water volume in seawater tank 107 on EGD concentration dilution before seawater intake.

[0074] Please also refer to Figure 2 and Figure 3 Optionally, the LNG receiving station also includes a second backup pump 123, which is connected to the seawater tank 107 and the second liquid outlet network 103. Second backup pump 123 is designed to be activated when the seawater transport pump 104 is undergoing maintenance. This configuration allows second backup pump 123 to continue supplying EGD-containing seawater to IFV 101 during maintenance, preventing a shortage of EGD-containing seawater. Second backup pump 123 is used to pump EGD-containing seawater from the seawater tank 107 to the second liquid outlet network 103.

[0075] Please also refer to Figure 2 and Figure 3, the second backup pump 123 can be connected to the seawater pool 107 through a pipeline. The second backup pump 123 can be connected to the second liquid outlet pipe network 103 by threaded connection or welding. The seawater transport pump 104 and the second backup pump 123 can be motor-driven plunger pumps or screw pumps. When the seawater transport pump 104 is repaired, the second backup pump 123 can be manually turned on. Alternatively, the controller controls the second backup pump 123 to be turned on when it receives a maintenance signal from the seawater transport pump 104. The second backup pump 123 and each seawater transport pump 104 are connected in parallel. That is, when any seawater transport pump 104 needs maintenance, the second backup pump 123 can be turned on as a replacement.

[0076] Please also refer to Figures 1 to 3 The process for adding EGD-containing seawater to the seawater inlet of IFV 101 is as follows: First, EGD from EGD raw material drum 112 is transferred to EGD tank 110 using suction pump 111. Then, EGD from EGD tank 110 is transferred to seawater tank 107 using first pump 109, second pump 114, third pump 116, and / or first backup pump 118. Finally, seawater transport pump 104 transfers the EGD-containing seawater through second outlet pipe network 103 to the seawater inlet of IFV 101 to kill any living organisms there. The seawater entering IFV 101 is heated with LNG and then passed into seawater drain 102.

[0077] The above is a detailed introduction to the EGD dosing system and LNG receiving station provided in the embodiments of the present application. For those skilled in the art, according to the ideas of the embodiments of the present application, there may be some changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation to this application. All equivalent modifications or changes made in accordance with the spirit and technical ideas of this application shall still be covered by the claims of this application.

Claims

1. An EGD dosing system, characterized in that: include: EGD tank; a first pump connected to the EGD tank; a first dosing pipe connected to the first pump; a first backup pump connected to the EGD tank, the first backup pump being configured to be started when the first pump is being repaired; a spare dosing pipe connected to the first spare pump and the first dosing pipe; and A seawater pool is connected to the first dosing pipe.

2. The EGD dosing system according to claim 1, characterized in that: It also includes a second pump and a second dosing pipe, the second pump is connected to the EGD tank, the second dosing pipe is connected to the second pump, the spare dosing pipe and the seawater pool, and the second pump is used to start when the seawater pool supplies seawater containing EGD to multiple IFVs.

3. The EGD dosing system according to claim 2, characterized in that: It also includes a third pump and a third dosing pipe. The third pump is connected to the EGD tank. The third dosing pipe is connected to the third pump, the spare dosing pipe and the seawater pool. The third pump is used to start when the seawater pool supplies seawater containing EGD to multiple IFVs.

4. The EGD dosing system according to claim 3, characterized in that: It also includes a first liquid outlet pipe network, the four ports of which are away from the EGD tank and are respectively connected to the first pump, the second pump, the third pump and the first backup pump, and the other end of the first liquid outlet pipe network is connected to the EGD tank.

5. The EGD dosing system according to claim 3, characterized in that: It also includes a return pipe network, which is connected to the first dosing pipe, the second dosing pipe, the third dosing pipe and the standby dosing pipe. The end of the return pipe network away from the first pump, the second pump, the third pump and the first standby pump is connected to the EGD tank.

6. The EGD dosing system according to claim 3, characterized in that: The first dosing pipe, the second dosing pipe, and the third dosing pipe are connected to each other at the same connection point.

7. The EGD dosing system according to claim 3, characterized in that: It also includes a flushing pipe network, which is connected to the first dosing pipe, the second dosing pipe, the third dosing pipe and the spare dosing pipe.

8. The EGD dosing system according to claim 7, characterized in that: It also includes a trench, which is connected to the bottom of the EGD tank, and the flushing pipe network is connected to the top of the EGD tank.

9. An LNG receiving station, characterized in that: include: The EGD dosing system according to any one of claims 1 to 8; A plurality of seawater transport pumps, wherein the seawater pool is connected to the plurality of seawater transport pumps; a second liquid outlet pipe network connected to the plurality of seawater transport pumps; and There are multiple IFVs, and the second liquid outlet pipe network is connected to the multiple IFVs.

10. The LNG receiving station according to claim 9, characterized in that: It also includes a second backup pump, which is connected to the seawater pool and the second liquid outlet pipe network respectively. The second backup pump is used to be started when the seawater transport pump is repaired.

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