Skid-mounted methanol steam recovery device for ship

Abstract

The invention relates to the technical field of methanol steam recovery, and discloses a marine skid-mounted methanol steam recovery device, which comprises a shell arranged on a ship body, a multi-stage gradient refrigeration condensation unit and an adsorption unit are arranged in the shell, the condensation unit and the adsorption unit are respectively in independent modular arrangement, and the condensation unit is provided with a gas-liquid separator; the methanol steam enters a condensation unit and is sequentially subjected to gradient refrigeration for multiple times, so that water in the methanol steam is liquefied and separated, the methanol steam is partially liquefied to form methanol liquid and residual steam, and the methanol liquid and the residual steam are separated through a gas-liquid separator; the residual steam is used for adsorbing and filtering the methanol steam through an adsorption unit, so that tail gas discharged outwards is formed after the content of the methanol steam in the residual steam is lower than the set content; by means of the combined arrangement of the condensation unit and the adsorption unit for multi-stage gradient refrigeration, efficient recovery and treatment of methanol steam are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of methanol vapor recovery, and in particular to a marine skid-mounted methanol vapor recovery device. Background Art

[0002] Methanol, as a clean ship fuel, has been widely used in the shipping industry. However, during the storage, transportation and use of methanol, it is difficult to avoid the volatilization of methanol vapor. Allowing methanol vapor to volatilize means a waste of resources. Therefore, the development of efficient methanol vapor recovery equipment is of great significance for environmental protection, resource recycling and utilization, and the sustainable development of the shipping industry.

[0003] In the existing technology, the shipping industry usually adopts the water washing method to absorb methanol through the contact between water and methanol vapor. However, due to the limited solubility of methanol in water, a large amount of unabsorbed methanol vapor will still be discharged into the atmosphere, resulting in low recovery efficiency. At the same time, the water washing method will produce methanol-containing wastewater, which requires additional treatment before discharge, increasing treatment costs and easily causing secondary pollution. Summary of the Invention

[0004] The object of the present invention is to provide a marine skid-mounted methanol vapor recovery device, aiming to solve the problem of low methanol vapor recovery efficiency in the prior art.

[0005] The present invention is implemented as follows: a marine skid-mounted methanol vapor recovery device includes a housing arranged on the hull, wherein a condensing unit and an adsorption unit with multi-stage gradient refrigeration are provided in the housing, wherein the condensing unit and the adsorption unit are arranged in independent modular configurations, and the condensing unit has a gas-liquid separator;

[0006] Methanol vapor enters the condensing unit and is subjected to multiple gradient refrigeration steps in sequence to liquefy and separate water from the methanol vapor. The methanol vapor is partially liquefied to form methanol liquid and residual vapor, which are then separated by a gas-liquid separator.

[0007] The residual steam is subjected to adsorption and filtration by the adsorption unit to form tail gas which is discharged outward after the methanol vapor content in the residual steam is lower than the set content.

[0008] Furthermore, a vibration-damping base is provided at the bottom of the shell, and the vibration-damping base abuts against the shell from bottom to top.

[0009] Furthermore, a plurality of vibration-damping bases are provided at the bottom of the shell, and the plurality of vibration-damping bases are arranged at intervals along the circumference of the shell, and the plurality of vibration-damping bases provide circumferential support to the shell.

[0010] Furthermore, the condensing unit includes a pre-cooling heat exchanger, and after the methanol vapor passes through the pre-cooling heat exchanger, water in the methanol vapor is liquefied and separated.

[0011] Furthermore, the refrigeration temperature range of the pre-cooling heat exchanger is between 0°C and 10°C.

[0012] Furthermore, the condensing unit includes a cryogenic heat exchanger. After the methanol vapor passes through the pre-cooling heat exchanger and enters the cryogenic heat exchanger, the methanol vapor is partially liquefied to form methanol liquid and residual vapor. Along the flow direction of the methanol vapor in the condensing unit, the pre-cooling heat exchanger, the cryogenic heat exchanger and the gas-liquid separator are connected and arranged in sequence.

[0013] Furthermore, the refrigeration temperature range of the cryogenic heat exchanger is -30°C to -50°C.

[0014] Furthermore, the adsorption unit includes an adsorption tank, which is filled with an adsorption layer formed by activated carbon or resin, and the activated carbon or resin has undergone surface modification; after the residual steam passes through the adsorption layer, the adsorption layer adsorbs methanol vapor in the residual steam so that the methanol vapor content in the exhausted exhaust gas is lower than the set content.

[0015] Furthermore, the adsorption tank has a longitudinally arranged inner cavity, a plurality of the adsorption layers are provided in the inner cavity, the plurality of the adsorption layers are spaced apart along the height direction of the inner cavity, and adsorption intervals are provided between adjacent adsorption layers;

[0016] The outer periphery of the adsorption layer is wrapped with an elastic layer, and the elastic layer is fixedly connected to the inner side wall of the inner cavity, so as to seal the outer periphery of the adsorption layer and the inner side wall of the inner cavity; the adsorption layer has a bottom surface arranged downward, and the bottom surface is covered with an elastic membrane, the outer periphery of the elastic membrane is fixedly connected to the periphery of the adsorption layer, and the elastic membrane and the bottom surface are enclosed to form an elastic area, and the elastic membrane is provided with a plurality of air holes;

[0017] When the residual steam passes through the multiple adsorption layers along the height direction of the inner cavity, the adsorption layers are impacted by the residual steam and float back and forth longitudinally. The elastic membrane is impacted by the residual steam and expands and contracts back and forth elastically.

[0018] Furthermore, a plurality of longitudinally arranged mounting posts are formed on the bottom of the housing, the plurality of mounting posts are arranged in a spaced-apart manner, and a mounting cavity with an open bottom is formed in the mounting posts;

[0019] The bottom of the mounting column is provided with a fixing seat fixed on the ship, the fixing seat is located below the mounting cavity, the fixing seat is provided with a longitudinally arranged connecting rod, the connecting rod is provided with a movably arranged upper supporting block, the upper supporting block is located above the fixing seat; a spring is sleeved on the connecting rod, the bottom of the spring presses against the fixing seat from top to bottom, and the top of the spring presses against the upper supporting block from bottom to top;

[0020] The fixing seat is located below the mounting cavity, and the upper supporting block is placed in the mounting cavity; an annular groove is provided on the inner side wall of the mounting cavity, and the annular groove is arranged around the circumference of the mounting cavity; the outer periphery of the annular groove is filled with an elastic ring, and the outer periphery of the upper supporting block is movably embedded in the annular groove and fixedly connected to the elastic ring;

[0021] When the shell vibrates with the ship, the upper supporting block elastically moves back and forth along the connecting rod to achieve longitudinal vibration reduction, and the upper supporting block elastically moves back and forth laterally relative to the mounting column to achieve lateral vibration reduction.

[0022] Compared with the prior art, the marine skid-mounted methanol vapor recovery device provided by the present invention achieves efficient recovery and treatment of methanol vapor through the combined arrangement of a condensation unit and an adsorption unit with multi-stage gradient refrigeration. Specifically, it has the following advantages:

[0023] 1) After entering the device, methanol vapor can be subjected to multiple gradient refrigeration steps in sequence, gradually reducing the temperature and liquefying the water therein, thereby promoting the liquefaction efficiency of methanol vapor. At the same time, the gas-liquid separator can effectively separate the liquefied methanol liquid and residual vapor, ensuring the purity of liquid methanol and providing cleaner residual vapor for subsequent adsorption filtration, thereby improving the operating efficiency and recovery efficiency of the entire device.

[0024] 2) The residual steam is adsorbed and filtered through the adsorption unit, which can reduce the methanol vapor content in the residual steam to below the set content, thereby ensuring that the exhaust gas meets environmental protection requirements and avoiding the additional treatment costs and environmental risks caused by excessive exhaust gas emissions;

[0025] 3) The condensation unit and adsorption unit adopt an independent modular layout, which not only improves the integration of the device, but also facilitates installation, maintenance and replacement. It enables the device to be flexibly configured according to actual needs and adapt to the use scenarios of different ships, further improving the practicality and economy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the process flow of the marine skid-mounted methanol vapor recovery device provided by the present invention;

[0027] Figure 2 It is a cross-sectional schematic diagram of the adsorption tank provided by the present invention;

[0028] Figure 3 is a front view schematic diagram of the housing provided by the present invention;

[0029] Figure 4 is a schematic cross-sectional view of the mounting column provided by the present invention;

[0030] Figure 5 This is a schematic diagram of the skid-mounted structure of the system provided by the present invention;

[0031] In the figure: housing 100, vibration damping base 101, mounting column 102, mounting cavity 103, fixing base 104, connecting rod 105, upper supporting block 106, spring 107, elastic ring 108;

[0032] Gas-liquid separator 200 , pre-cooling heat exchanger 201 , cryogenic heat exchanger 202 , adsorption tank 203 , adsorption layer 204 , inner cavity 205 , adsorption spacer 206 , elastic layer 207 , bottom surface 208 , elastic membrane 209 , elastic region 210 . DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0035] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] Reference Figure 1-5 The figure shows a preferred embodiment of the present invention.

[0037] The marine skid-mounted methanol vapor recovery device includes a housing 100 arranged on the hull, wherein the housing 100 is provided with a condensing unit and an adsorption unit with multi-stage gradient refrigeration. The condensing unit and the adsorption unit are arranged in independent modular configurations. The condensing unit has a gas-liquid separator 200.

[0038] The methanol vapor enters the condensing unit and is subjected to multiple gradient refrigeration steps in sequence to liquefy and separate the water in the methanol vapor. The methanol vapor is partially liquefied to form methanol liquid and residual vapor, which are then separated by the gas-liquid separator 200.

[0039] The residual steam passes through an adsorption unit to absorb and filter the methanol steam, so that the methanol steam content in the residual steam is lower than the set content, forming tail gas discharged to the outside.

[0040] The above-mentioned marine skid-mounted methanol vapor recovery device achieves efficient recovery and treatment of methanol vapor through the combined arrangement of a condensing unit and an adsorption unit with multi-stage gradient refrigeration. Specifically, it has the following advantages:

[0041] 1) After entering the device, methanol vapor can be subjected to multiple gradient refrigeration steps in sequence, gradually reducing the temperature and liquefying the water therein, thereby promoting the liquefaction efficiency of the methanol vapor. At the same time, the gas-liquid separator 200 can effectively separate the liquefied methanol liquid and the residual vapor, ensuring the purity of the liquid methanol and providing cleaner residual vapor for subsequent adsorption filtration, thereby improving the operating efficiency and recovery efficiency of the entire device;

[0042] 2) The residual steam is adsorbed and filtered through the adsorption unit, which can reduce the methanol vapor content in the residual steam to below the set content, thereby ensuring that the exhaust gas meets environmental protection requirements and avoiding the additional treatment costs and environmental risks caused by excessive exhaust gas emissions;

[0043] 3) The condensation unit and adsorption unit adopt an independent modular layout, which not only improves the integration of the device, but also facilitates installation, maintenance and replacement. It enables the device to be flexibly configured according to actual needs and adapt to the use scenarios of different ships, further improving the practicality and economy of the device.

[0044] In this embodiment, a vibration-damping base 101 is provided at the bottom of the shell 100, and the vibration-damping base 101 abuts against the shell 100 from bottom to top. In this way, the vibration impact on the shell 100 during the operation of the ship is effectively buffered, the impact of the vibration on the internal structure and equipment of the device is reduced, and the stability and service life of the device are improved.

[0045] In this embodiment, a plurality of vibration-damping bases 101 are provided at the bottom of the housing 100 . The plurality of vibration-damping bases 101 are arranged at intervals along the circumference of the housing 100 , and the plurality of vibration-damping bases 101 provide circumferential support to the housing 100 .

[0046] In this way, uniform support for the outer shell 100 can be achieved, the vibration reduction effect can be further enhanced, the stability of the device during ship operation can be ensured, and structural damage caused by local uneven force can be avoided.

[0047] In this embodiment, the condensing unit includes a pre-cooling heat exchanger 201 . After the methanol vapor passes through the pre-cooling heat exchanger 201 , water in the methanol vapor is liquefied and separated.

[0048] The pre-cooling heat exchanger 201 can be used to preliminarily cool the methanol vapor, so that the water therein is liquefied and separated, thereby reducing the amount of water that needs to be processed in the subsequent condensation process, improving the condensation efficiency, creating more favorable conditions for the subsequent methanol vapor liquefaction, and thus improving the methanol vapor recovery efficiency of the entire device.

[0049] In this embodiment, the refrigeration temperature range of the pre-cooling heat exchanger 201 is between 0°C and 10°C. This effectively reduces the temperature of the methanol vapor, allowing the water therein to be quickly liquefied and separated, while avoiding increased energy consumption and equipment operating costs caused by excessively low temperatures, achieving a balance between energy saving and high efficiency, and optimizing the pretreatment effect of the methanol vapor.

[0050] In this embodiment, the condensing unit includes a cryogenic heat exchanger 202. After the methanol vapor passes through the pre-cooling heat exchanger 201 and enters the cryogenic heat exchanger 202, the methanol vapor is partially liquefied to form methanol liquid and residual vapor. Along the flow direction of the methanol vapor in the condensing unit, the pre-cooling heat exchanger 201, the cryogenic heat exchanger 202 and the gas-liquid separator 200 are connected and arranged in sequence.

[0051] The temperature of the methanol vapor is further lowered by the cryogenic heat exchanger 202, causing it to partially liquefy into methanol liquid and residual vapor. The sequentially connected arrangement allows the methanol vapor to undergo a gradual cooling process, maximizing the liquefaction efficiency, thereby increasing the recovery amount of methanol liquid and further improving the methanol vapor recovery efficiency of the entire device.

[0052] In this embodiment, the refrigeration temperature range of the cryogenic heat exchanger 202 is -30°C to -50°C. In this way, the methanol vapor is fully liquefied in a low-temperature environment, which promotes the liquefaction rate of the methanol vapor, thereby increasing the recovery amount of the methanol liquid and improving the recovery efficiency of the entire device.

[0053] In this embodiment, the adsorption unit includes an adsorption tank 203, which is filled with an adsorption layer 204 formed by activated carbon or resin, and the activated carbon or resin has undergone surface modification. After the residual steam passes through the adsorption layer 204, the adsorption layer 204 adsorbs the methanol vapor in the residual steam, so that the methanol vapor content in the exhausted exhaust gas is lower than the set content.

[0054] The adsorption layer 204 in the adsorption tank 203 can be used to adsorb and filter the methanol vapor in the residual steam, ensuring that the methanol vapor content in the discharged exhaust gas is lower than the set content, meeting environmental emission requirements. After the activated carbon or resin is surface modified, the adsorption performance is stronger, and it can more effectively adsorb methanol vapor, reduce the methanol content in the exhaust gas, and reduce pollution to the environment.

[0055] In this embodiment, the adsorption tank 203 has a longitudinally arranged inner cavity 205, and a plurality of adsorption layers 204 are provided in the inner cavity 205. The plurality of adsorption layers 204 are spaced apart along the height direction of the inner cavity 205, and adsorption intervals 206 are provided between adjacent adsorption layers 204.

[0056] The outer periphery of the adsorption layer 204 is wrapped with an elastic layer 207, which is fixedly connected to the inner sidewall of the inner cavity 205, thereby sealing the outer periphery of the adsorption layer 204 with the inner sidewall of the inner cavity 205. The adsorption layer 204 has a downwardly disposed bottom surface 208, which is covered with an elastic membrane 209. The outer periphery of the elastic membrane 209 is fixedly connected to the periphery of the adsorption layer 204, and the elastic membrane 209 and the bottom surface 208 enclose an elastic region 210. The elastic membrane 209 is provided with a plurality of air holes.

[0057] When the residual steam passes through the multi-layer adsorption layer 204 along the height direction of the inner cavity 205, the adsorption layer 204 is impacted by the residual steam and floats back and forth in the longitudinal direction. The elastic membrane 209 is impacted by the residual steam and expands and contracts back and forth elastically.

[0058] Through the structural design of the adsorption tank 203, when the residual steam passes through the multi-layer adsorption layer 204, the adsorption layer 204 can float back and forth longitudinally and elastically expand and contract under the action of the elastic layer 207 and the elastic membrane 209, thereby increasing the contact time and contact area between the residual steam and the adsorption layer 204, improving the adsorption efficiency, further reducing the methanol content in the exhaust gas, and ensuring that the exhaust gas meets the emission standards.

[0059] In this embodiment, a plurality of longitudinally arranged mounting posts 102 are formed at the bottom of the housing 100. The mounting posts 102 are arranged in a spaced-apart manner and surround each other. A mounting cavity 103 with an open bottom is formed in the mounting posts 102.

[0060] A fixing seat 104 fixed to the vessel is provided at the bottom of the mounting column 102. The fixing seat 104 is located below the mounting cavity 103. A longitudinally arranged connecting rod 105 is provided on the fixing seat 104. A movable upper supporting block 106 is provided on the connecting rod 105. The upper supporting block 106 is located above the fixing seat 104. A spring 107 is sleeved on the connecting rod 105. The bottom of the spring 107 presses against the fixing seat 104 from top to bottom, and the top of the spring 107 presses against the upper supporting block 106 from bottom to top.

[0061] The fixing seat 104 is located below the mounting cavity 103, and the upper supporting block 106 is placed in the mounting cavity 103; the inner side wall of the mounting cavity 103 is provided with an annular groove, which is arranged around the circumference of the mounting cavity 103; the outer periphery of the annular groove is filled with an elastic ring 108, and the outer periphery of the upper supporting block 106 is movably embedded in the annular groove and fixedly connected to the elastic ring 108;

[0062] When the housing 100 vibrates with the ship, the upper support block 106 elastically moves back and forth along the connecting rod 105 to achieve longitudinal vibration reduction, and the upper support block 106 elastically moves back and forth laterally relative to the mounting column 102 to achieve lateral vibration reduction.

[0063] Such an installation structure realizes dual vibration reduction of the outer shell 100 in the longitudinal and transverse directions through the elastic action of the spring 107 and the elastic ring 108. When the outer shell 100 vibrates with the ship, the upper support block 106 can elastically move back and forth up and down on the connecting rod 105, and at the same time elastically move back and forth laterally relative to the installation column 102, thereby effectively buffering the vibration impact, reducing the impact of vibration on the device, improving the stability and reliability of the device, and ensuring the normal operation of the device during the operation of the ship.

[0064] The marine skid-mounted methanol vapor recovery device provided in this embodiment can be summarized as the following main system components (combined with the attached Figure 5 ):

[0065] 1) Condensation unit: It adopts a multi-stage gradient cooling design (-20℃ to -50℃), and is linked to the variable frequency refrigeration unit through a heat exchanger to adapt to the fluctuating gas volume of the ship; the use of variable frequency refrigeration technology can reduce energy consumption by 30%, adapt to the fluctuation of the ship's power grid, and condensation and adsorption work in coordination. The comprehensive methanol recovery rate is ≥95%, and zero wastewater is generated.

[0066] 2) Adsorption unit: It is filled with activated carbon or resin adsorbent specially designed for methanol vapor, designed for low concentration methanol vapor (<500ppm), and the adsorption capacity is increased by 30%-50%. By selecting activated carbon or resin specially designed for methanol vapor, the pore structure and surface functional groups are optimized for low concentration and high humidity environments, thereby improving the adsorption efficiency and regeneration stability, achieving an adsorbent life of ≥2 years and a desorption rate of ≥95%.

[0067] 3) Intelligent control module: integrated PLC control system, real-time monitoring of methanol concentration, temperature and pressure, automatic switching of condensation / adsorption mode; real-time adjustment of refrigeration power and adsorption cycle through PLC system to ensure low energy consumption and high recovery rate.

[0068] 4) Skid-mounted structure: It adopts a modular design with customizable dimensions, supports multi-unit parallel expansion, and has passed marine explosion-proof certification (Ex d IIC T4). The modular design can be flexibly customized to suit the hull space, supports multiple installation scenarios such as deck, engine room or fuel tank, and integrates an explosion-proof casing and shock-absorbing base, and has passed classification society certification.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Marine skid-mounted methanol vapor recovery unit, characterized by: The device comprises a shell arranged on the hull, wherein a condensing unit and an adsorption unit with multi-stage gradient refrigeration are provided in the shell, wherein the condensing unit and the adsorption unit are arranged in independent modular configurations, and the condensing unit has a gas-liquid separator; Methanol vapor enters the condensing unit and is subjected to multiple gradient refrigeration steps in sequence to liquefy and separate water from the methanol vapor. The methanol vapor is partially liquefied to form methanol liquid and residual vapor, which are then separated by a gas-liquid separator. The residual steam is subjected to adsorption and filtration by the adsorption unit to form tail gas which is discharged outward after the methanol vapor content in the residual steam is lower than the set content.

2. The marine skid-mounted methanol vapor recovery device according to claim 1, characterized in that: A vibration-damping base is provided at the bottom of the shell, and the vibration-damping base abuts against the shell from bottom to top.

3. The marine skid-mounted methanol vapor recovery device according to claim 2, characterized in that: A plurality of vibration-damping bases are provided at the bottom of the shell. The plurality of vibration-damping bases are arranged around the circumference of the shell at intervals, and the plurality of vibration-damping bases provide circumferential support for the shell.

4. The marine skid-mounted methanol vapor recovery device according to any one of claims 1 to 3, characterized in that: The condensing unit includes a pre-cooling heat exchanger. After the methanol vapor passes through the pre-cooling heat exchanger, water in the methanol vapor is liquefied and separated.

5. The marine skid-mounted methanol vapor recovery device according to claim 4, characterized in that: The refrigeration temperature range of the pre-cooling heat exchanger is between 0°C and 10°C.

6. The marine skid-mounted methanol vapor recovery device according to claim 4, characterized in that: The condensing unit includes a cryogenic heat exchanger. After the methanol vapor passes through the pre-cooling heat exchanger and enters the cryogenic heat exchanger, the methanol vapor is partially liquefied to form methanol liquid and residual vapor. Along the flow direction of the methanol vapor in the condensing unit, the pre-cooling heat exchanger, the cryogenic heat exchanger and the gas-liquid separator are connected and arranged in sequence.

7. The marine skid-mounted methanol vapor recovery device according to claim 6, characterized in that: The refrigeration temperature range of the cryogenic heat exchanger is -30°C to -50°C.

8. The marine skid-mounted methanol vapor recovery device according to any one of claims 1 to 3, characterized in that: The adsorption unit includes an adsorption tank, which is filled with an adsorption layer formed by activated carbon or resin, and the activated carbon or resin has undergone surface modification. After the residual steam passes through the adsorption layer, the adsorption layer adsorbs methanol vapor in the residual steam, so that the methanol vapor content in the exhausted tail gas is lower than the set content.

9. The marine skid-mounted methanol vapor recovery device according to claim 8, characterized in that: The adsorption tank has a longitudinally arranged inner cavity, and a plurality of adsorption layers are provided in the inner cavity. The plurality of adsorption layers are spaced apart along the height direction of the inner cavity, and adsorption intervals are provided between adjacent adsorption layers. The outer periphery of the adsorption layer is wrapped with an elastic layer, and the elastic layer is fixedly connected to the inner side wall of the inner cavity, so as to seal the outer periphery of the adsorption layer and the inner side wall of the inner cavity; the adsorption layer has a bottom surface arranged downward, and the bottom surface is covered with an elastic membrane, the outer periphery of the elastic membrane is fixedly connected to the periphery of the adsorption layer, and the elastic membrane and the bottom surface are enclosed to form an elastic area, and the elastic membrane is provided with a plurality of air holes; When the residual steam passes through the multiple adsorption layers along the height direction of the inner cavity, the adsorption layers are impacted by the residual steam and float back and forth longitudinally. The elastic membrane is impacted by the residual steam and expands and contracts back and forth elastically.

10. The marine skid-mounted methanol vapor recovery device according to any one of claims 2 or 3, characterized in that: The bottom of the housing is formed with a plurality of longitudinally arranged mounting posts, the plurality of mounting posts are arranged in a spaced-apart manner, and the mounting posts are provided with mounting cavities with bottom openings; The bottom of the mounting column is provided with a fixing seat fixed on the ship, the fixing seat is located below the mounting cavity, the fixing seat is provided with a longitudinally arranged connecting rod, the connecting rod is provided with a movably arranged upper supporting block, the upper supporting block is located above the fixing seat; a spring is sleeved on the connecting rod, the bottom of the spring presses against the fixing seat from top to bottom, and the top of the spring presses against the upper supporting block from bottom to top; The fixing seat is located below the mounting cavity, and the upper supporting block is placed in the mounting cavity; an annular groove is provided on the inner side wall of the mounting cavity, and the annular groove is arranged around the circumference of the mounting cavity; the outer periphery of the annular groove is filled with an elastic ring, and the outer periphery of the upper supporting block is movably embedded in the annular groove and fixedly connected to the elastic ring; When the shell vibrates with the ship, the upper supporting block elastically moves back and forth along the connecting rod to achieve longitudinal vibration reduction, and the upper supporting block elastically moves back and forth laterally relative to the mounting column to achieve lateral vibration reduction.

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