A new methanol daily cabin and use method

Abstract

The application discloses a novel methanol daily cabin, which comprises a clean methanol fuel cabin, a methanol liquid return oil dirt separation cabin is arranged in the clean methanol fuel cabin, a partition assembly is arranged between the methanol liquid return oil dirt separation cabin and the clean methanol fuel cabin and the two are communicated through the partition assembly, a methanol liquid return separation cylinder is fixedly connected to the top of the methanol liquid return oil dirt separation cabin, a main engine purging loop pipe and a methanol supply unit purging loop pipe are respectively communicated with the top of the methanol liquid return separation cylinder and both of the pipes extend into the interior of the methanol liquid return separation cylinder, a through hole is formed in the inner wall of the methanol liquid return separation cylinder, a horizontally arranged impeller is pivotally connected to the bottom of the methanol liquid return separation cylinder, and a gas permeation hole is formed in the top of the methanol liquid return separation cylinder. The methanol daily cabin is used in a multi-stage separation mode, and the liquid return methanol is separated for multiple times, so that the liquid return methanol can be better utilized.

Description

Technical Field

[0001] This invention relates to the field of marine equipment technology, and specifically to a novel methanol-fueled daily use compartment. Background Technology

[0002] Methanol, as a low-flash-point liquid fuel at ambient temperature and pressure, differs from LNG fuel. Methanol fuel is similar to fuel oil and requires a separate day use tank. This tank, along with fuel processing equipment, should be located as close as possible to the engine room area, ideally above the engine room. The methanol day use tank is a structural tank, internally divided into two interconnected spaces by a partition. One side collects returned liquid methanol from the main engine or LFSS / FVT. It's important to note that this methanol contains fuel oil; therefore, the partition prevents the returned methanol from mixing with the clean methanol on the other side. The bottom of the side collecting returned liquid methanol has a discharge port that triggers an alarm when the oil level reaches a set value, requiring the fuel oil at the bottom to be drained. The other space receives clean returned liquid methanol after settling. However, this returned liquid methanol still contains a small amount of fuel oil, which can contaminate the clean methanol; therefore, more effective separation measures are needed for the returned methanol.

[0003] Therefore, it is necessary to provide a new type of methanol daily use tank to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a novel methanol daily use tank that can effectively separate methanol from returned liquid methanol, thereby separating the small amount of fuel oil from the returned liquid methanol more efficiently and thoroughly.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A novel methanol daily use tank includes a clean methanol fuel tank, within which a methanol return oil-sludge separation tank is provided. A partition assembly is provided between the methanol return oil-sludge separation tank and the clean methanol fuel tank. The partition assembly includes alternating upper and lower partitions. The lower partition closer to the clean methanol fuel tank communicates with the clean methanol fuel tank through an upper opening, and the upper partition closer to the methanol return oil-sludge separation tank communicates with the methanol return oil-sludge separation tank through a lower opening. A methanol return separation cylinder is fixedly connected to the top of the methanol return oil-sludge separation tank. The top of the methanol return separation cylinder is connected to a main unit purge circuit pipe and a methanol supply unit purge circuit pipe, both of which extend into the interior of the methanol return separation cylinder. Through holes are provided on the inner wall of the methanol return separation cylinder. A horizontally arranged impeller is pivotally connected to the bottom of the methanol return separation cylinder, and a vent is provided on the top of the methanol return separation cylinder.

[0007] Preferably, the reinforcing ribs of the clean methanol fuel tank and the methanol return oil sludge separation tank are both turned outwards.

[0008] Preferably, the bottom of the methanol return oil separation chamber is equipped with a first residual discharge valve and an oil detector.

[0009] Preferably, the methanol daily use compartment is equipped with an 85% high level alarm and a 90% ultra-high level alarm.

[0010] Preferably, the methanol daily use compartment is equipped with a pressure sensor that automatically opens / closes the gas supply valve according to the pressure inside the compartment.

[0011] A novel method for using a methanol daily use tank includes the following steps:

[0012] Step 1: Purge the returned methanol in the main unit purge circuit and the methanol supply unit purge circuit with nitrogen gas, and purge it into the methanol return liquid separator through the main unit purge circuit pipe and the methanol supply unit purge circuit pipe.

[0013] Step 2: High-pressure nitrogen gas is used to spray the returned methanol into the methanol-liquid separation cylinder. The liquid level of the returned methanol in the cylinder gradually rises, causing the impeller to be submerged below the liquid surface. The impeller rotates due to the impact of the purging nitrogen gas and the returned methanol. Driven by the rotation of the impeller, the returned methanol in the methanol-liquid separation cylinder undergoes high-speed centrifugal motion. The denser fuel oil is first thrown out of the methanol-liquid separation cylinder by the centrifugal force and falls to the bottom of the methanol-liquid oil-sludge separation chamber. The less dense methanol flows out of the through hole and falls into the methanol-liquid oil-sludge separation chamber after the fuel oil is thrown out of the methanol-liquid separation cylinder. The methanol and fuel oil complete the first separation. Step 3: The methanol and fuel oil that have been thrown out of the methanol-liquid separation cylinder are left to stand in the methanol-liquid oil-sludge separation chamber and undergo a second separation.

[0014] Step 4: The methanol returned to the oil-sludge separation chamber enters the baffle assembly. When the liquid level of the methanol returned to the oil-sludge separation chamber exceeds the top of the lower baffle, the methanol returned to the oil-sludge separation chamber undergoes a third separation through the alternating upper and lower baffles. After three separations, the methanol returned to the oil-sludge separation chamber finally flows into the clean methanol fuel tank through the baffle assembly.

[0015] Step 5: When the oil detector at the bottom of the methanol return oil-sludge separation chamber alarms, open the first residual discharge valve at the bottom of the methanol return oil-sludge separation chamber to release the fuel oil deposited at the bottom of the methanol return oil-sludge separation chamber.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. By using a multi-stage separation method, the returned methanol is separated multiple times, so that the fuel in the returned methanol is completely separated from the methanol, so that the returned methanol will not contaminate the clean methanol in the original methanol daily use tank, and the returned methanol can be better utilized.

[0018] 2. By using purging nitrogen gas in conjunction with a methanol return separator, the separation efficiency of returned methanol is further improved, resulting in better separation of methanol and fuel oil. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the methanol return separation cylinder;

[0021] Among them, 1-clean methanol fuel tank, 2-methanol return oil separation tank, 3-partition assembly, 4-methanol return separation cylinder, 5-main unit purge circuit pipe, 6-methanol supply unit purge circuit pipe, 7-through hole, 8-impeller, 9-vent hole, 10-first residual discharge valve, 11-oil content detector Detailed Implementation

[0022] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. After reading this invention, any modifications of the invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixed connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] In this invention, terms such as "upper," "lower," "bottom," and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely relational terms determined for the convenience of describing the structural relationship of the various components or elements of this invention, and do not specifically refer to any component or element in this invention, and should not be construed as limiting this invention.

[0025] like Figures 1 to 2As shown, a novel methanol daily use tank includes a clean methanol fuel tank 1, within which a methanol return oil-sludge separation tank 2 is provided. A partition assembly 3 is provided between the methanol return oil-sludge separation tank and the clean methanol fuel tank. The partition assembly includes alternating upper and lower partitions. The lower partition closer to the clean methanol fuel tank communicates with the clean methanol fuel tank through an upper opening, and the upper partition closer to the methanol return oil-sludge separation tank communicates with the methanol return oil-sludge separation tank through a lower opening. A methanol return oil-sludge separation cylinder 4 is fixedly connected to the top of the methanol return oil-sludge separation tank. The top of the methanol return oil-sludge separation cylinder is connected to both a main engine purge circuit pipe 5 and a methanol supply unit purge circuit pipe 6. Both the main engine purge circuit pipe 5 and the methanol supply unit purge circuit pipe 6 extend into the interior of the methanol return oil-sludge separation cylinder. A through hole 7 is provided on the inner wall of the methanol return oil-sludge separation cylinder. A horizontally mounted impeller 8 is pivotally connected to the bottom of the methanol return separator. A vent hole 9 is provided at the top of the methanol return separator. The reinforcing ribs of the methanol fuel tank and the methanol return oil sludge separation tank are both turned outwards and installed on the outer surface of the tank body to ensure the convenience and safety of the special coating of the methanol tank. The bottom of the methanol return oil sludge separation tank is equipped with a first residual discharge valve 10 and an oil content detector 11. The oil content detector monitors the liquid level of fuel deposits at the bottom of the methanol return oil sludge separation tank. When the oil content detector alarms, the first residual discharge valve is opened to release the deposited fuel. The methanol daily use tank is equipped with an 85% high level alarm and a 90% ultra-high level alarm. By setting up a two-stage high level alarm device, the methanol liquid level in the methanol daily use tank is prevented from being too high. A pressure sensor is installed in the methanol daily use tank. The gas supply valve is automatically opened / closed according to the pressure in the tank to maintain a stable pressure in the methanol daily use tank.

[0026] A novel method for using a methanol daily use tank includes the following steps:

[0027] Step 1: Purge the returned methanol in the main unit purge circuit and the methanol supply unit purge circuit with nitrogen gas, and purge it into the methanol return liquid separator through the main unit purge circuit pipe and the methanol supply unit purge circuit pipe.

[0028] Step 2: High-pressure nitrogen gas is used to spray the returned methanol into the methanol-liquid separation cylinder. The liquid level of the returned methanol in the cylinder gradually rises, causing the impeller to be submerged below the liquid surface. The impeller rotates due to the impact of the purging nitrogen gas and the returned methanol. Driven by the rotation of the impeller, the returned methanol in the methanol-liquid separation cylinder undergoes high-speed centrifugal motion. The denser fuel oil is first thrown out of the methanol-liquid separation cylinder by the centrifugal force and falls to the bottom of the methanol-liquid oil-sludge separation chamber. The less dense methanol flows out of the through hole and falls into the methanol-liquid oil-sludge separation chamber after the fuel oil is thrown out of the methanol-liquid separation cylinder. The methanol and fuel oil complete the first separation. Step 3: The methanol and fuel oil that have been thrown out of the methanol-liquid separation cylinder are left to stand in the methanol-liquid oil-sludge separation chamber and undergo a second separation.

[0029] Step 4: The methanol returned to the oil-sludge separation chamber enters the baffle assembly. When the liquid level of the methanol returned to the oil-sludge separation chamber exceeds the top of the lower baffle, the methanol returned to the oil-sludge separation chamber undergoes a third separation through the alternating upper and lower baffles. After three separations, the methanol returned to the oil-sludge separation chamber finally flows into the clean methanol fuel tank through the baffle assembly.

[0030] Step 5: When the oil detector at the bottom of the methanol return oil-sludge separation chamber alarms, open the first residual discharge valve at the bottom of the methanol return oil-sludge separation chamber to release the fuel oil deposited at the bottom of the methanol return oil-sludge separation chamber.

[0031] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A novel methanol daily use cabin, characterized in that: The methanol daily use tank includes a clean methanol fuel tank, which contains a methanol return oil separation tank. A partition assembly is provided between the methanol return oil separation tank and the clean methanol fuel tank. The partition assembly includes alternating upper and lower partitions. The lower partition closer to the clean methanol fuel tank is connected to the clean methanol fuel tank through an upper opening, and the upper partition closer to the methanol return oil separation tank is connected to the methanol return oil separation tank through a lower opening. A methanol return separation cylinder is fixedly connected to the top of the methanol return separation tank. The top of the methanol return separation cylinder is connected to both the main unit purge circuit pipe and the methanol supply unit purge circuit pipe, and both the main unit purge circuit pipe and the methanol supply unit purge circuit pipe extend into the interior of the methanol return separation cylinder. The inner wall of the methanol return separation cylinder has through holes, and a horizontally arranged impeller is pivotally connected to the bottom of the methanol return separation cylinder. A vent hole is provided at the top of the methanol return separation cylinder.

2. The novel methanol daily use cabin according to claim 1, characterized in that: The reinforcing ribs of both the clean methanol fuel tank and the methanol return oil separation tank are turned outwards.

3. The novel methanol daily use cabin according to claim 1, characterized in that: The bottom of the methanol return oil separation chamber is equipped with a first residual valve and an oil detector.

4. The novel methanol daily use cabin according to claim 1, characterized in that: The methanol daily use compartment is equipped with an 85% high-level alarm and a 90% ultra-high-level alarm.

5. A novel methanol daily use cabin according to claim 1, characterized in that: The methanol daily use compartment is equipped with a pressure sensor, which automatically opens / closes the gas supply valve according to the pressure inside the compartment.

6. A method of using a novel methanol daily use tank according to any one of claims 1-5, characterized in that, Includes the following steps: Step 1: Purge the returned methanol in the main unit purge circuit and the methanol supply unit purge circuit with nitrogen gas, and purge it into the methanol return liquid separator through the main unit purge circuit pipe and the methanol supply unit purge circuit pipe. Step 2: High-pressure nitrogen gas is used to spray the returned methanol into the methanol-liquid separation cylinder. The liquid level of the returned methanol in the methanol-liquid separation cylinder gradually rises, causing the impeller to be submerged below the liquid level. The impeller rotates due to the impact of the purging nitrogen gas and the returned methanol. The returned methanol in the methanol-liquid separation cylinder undergoes high-speed centrifugal motion driven by the rotation of the impeller. The denser fuel oil is first thrown out of the methanol-liquid separation cylinder by the centrifugal force and falls to the bottom of the methanol-liquid oil-sludge separation chamber. The less dense methanol flows out of the through hole and falls into the methanol-liquid oil-sludge separation chamber after the fuel oil is thrown out of the methanol-liquid separation cylinder. The methanol and fuel oil are separated for the first time. Step 3: The methanol and fuel oil that have been ejected from the methanol return separator are left to stand in the methanol return oil sludge separation chamber and then undergo a second separation. Step 4: The methanol returned to the oil-sludge separation chamber enters the baffle assembly. When the liquid level of the methanol returned to the oil-sludge separation chamber exceeds the top of the lower baffle, the methanol returned to the oil-sludge separation chamber undergoes a third separation through the alternating upper and lower baffles. After three separations, the methanol returned to the oil-sludge separation chamber finally flows into the clean methanol fuel tank through the baffle assembly. Step 5: When the oil detector at the bottom of the methanol return oil-sludge separation chamber alarms, open the first residual discharge valve at the bottom of the methanol return oil-sludge separation chamber to release the fuel oil deposited at the bottom of the methanol return oil-sludge separation chamber.

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