Marine emulsified oil high-speed separation system

Abstract

The utility model relates to a marine emulsified oil high-speed separation system, which comprises a demulsification treatment area for pumping emulsified oil into a heater so as to effectively break the emulsification phenomenon of the oil; the separation and purification area is connected with the demulsification treatment area and the impurity discharge area and is used for separating the oil demulsified in the emulsion bin after entering a separator, the centrifugal force of high-speed rotation of the separator enables the oil-water emulsion to be gradually layered, the separated clean oil is discharged into a clean oil tank, and the separated water and other impurities enter a slag discharge cabinet of the impurity discharge area; the impurity discharge area is connected with the demulsification treatment area and the separation and purification area, and is used for receiving water and impurities discharged by a separator in the separation and purification area and residual oil discharged by a demulsification bin in the demulsification treatment area through a slag discharge cabinet; and the electric control box is used for controlling the whole system and has an alarm protection function. The marine separator can solve the problem that an existing marine separation system cannot effectively separate emulsified oil, and the separation effect of the marine separator is effectively improved.

Description

Technical Field

[0001] This utility model relates to a high-speed separation system for marine emulsified oil, belonging to the field of fluid machinery engineering technology. Background Technology

[0002] Marine oil separators are primarily used to remove moisture and solid impurities from marine fuel and lubricating oils. However, under circulating or agitated conditions, moisture in marine fuel and lubricating oil reacts with surface-tension-reducing additives in the oil, distributing as tiny droplets evenly throughout the oil, leading to emulsification and turning into emulsified oil. On one hand, after emulsification, the integrity of the surface oil film is destroyed, causing wear and corrosion to the equipment during use. Furthermore, the interaction between moisture and additives in the oil produces sediments and gums, accelerating oil deterioration. On the other hand, oil emulsification increases the separation difficulty of the separator, reducing its effectiveness and affecting the normal operation of the ship's fuel and lubricating oil system.

[0003] Common demulsification methods include chemical and physical methods. Chemical demulsification primarily involves adding demulsifiers to the oil to improve its anti-emulsification properties, thus achieving demulsification. However, this method places relatively high demands on the demulsifier, requiring it to have good oil solubility, low volatility, and non-toxicity, while also considering its stability and synergistic effect with existing additives. In contrast, physical demulsification methods are more suitable for marine fuels and lubricating oils. Physical demulsification methods include electrostatic precipitation, ultrasonication, and filtration. Filtration utilizes the characteristic that the pore size of the filter membrane is smaller than the pore size of oil droplets, allowing only water to pass through while blocking oil droplets larger than the membrane pore size, thereby achieving oil demulsification. Summary of the Invention

[0004] To address the current problem of poor separation performance of marine separators for emulsified oil and to further improve the separation effect of marine separators, this utility model proposes a high-speed marine emulsified oil separation system.

[0005] To achieve the above objectives, the technical solution of this utility model is: a high-speed marine emulsified oil separation system, comprising a demulsification treatment zone, a separation and purification zone, a debris discharge zone, and an electrical control box, wherein:

[0006] The demulsification treatment zone is used to draw emulsified oil into the heater to effectively break up the oil emulsification.

[0007] The separation and purification zone connects the demulsification treatment zone and the impurity discharge zone. It is used to separate the oil after the oil in the emulsion tank is demulsified into the separator. The centrifugal force of the high-speed rotation of the separator causes the oil-water emulsion to gradually separate into layers. The separated clean oil is discharged into the clean oil tank, and the separated water and other impurities are discharged into the slag discharge cabinet. The separation and purification zone consists of a separator, a clean oil tank, and a one-way valve. The oil inlet of the separator is connected to the demulsification chamber, the clean oil outlet of the separator is connected to the clean oil tank, and the water and other impurities outlet of the separator is connected to the slag discharge cabinet of the impurity discharge zone.

[0008] The waste discharge area connects the demulsification treatment area and the separation and purification area. It receives water and impurities discharged from the separator in the separation and purification area and residual oil discharged from the demulsification chamber in the demulsification treatment area through the slag discharge cabinet.

[0009] The electrical control box controls the demulsification treatment area, separation and purification area, and debris discharge area. It is used to control the entire system and has alarm protection functions.

[0010] Furthermore, the demulsification treatment area consists of an emulsified oil tank, a shut-off valve, an oil pump, a flow meter, a heater, a pneumatic three-way valve, a filter, a demulsification chamber, a check valve, a compressor, a manual switch valve, a differential pressure switch, and a pressure gauge. The oil outlet of the emulsified oil tank is connected to the heater in sequence through the shut-off valve, the oil pump, and the flow meter. The heater is divided into three paths after passing through the pneumatic three-way valve: the first path is connected to the oil inlet of the emulsified oil tank through the check valve, the second path is connected to the demulsification chamber through the filter, and the third path is connected to the compressor.

[0011] Furthermore, the demulsification chamber is equipped with a differential pressure switch and a pressure gauge, and is connected to the slag discharge cabinet in the debris discharge area via a manual switch valve.

[0012] Furthermore, the demulsification chamber is made of stainless steel composite glass fiber filter material, which has a long channel effect for demulsification and can effectively break the emulsification phenomenon of oil-in-water.

[0013] Furthermore, a check valve is installed on the clean oil pipeline between the separator and the clean oil tank to prevent oil backflow.

[0014] Furthermore, the debris discharge area consists of a liquid level switch, a slag discharge cabinet, a slag discharge pump, a check valve, and a wastewater and waste residue tank. The slag discharge cabinet is connected to the wastewater and waste residue tank through the slag discharge pump and the check valve.

[0015] Furthermore, the slag discharge cabinet is equipped with a liquid level switch.

[0016] The beneficial effects of this utility model are:

[0017] This invention can solve the problem that existing marine separation systems cannot effectively separate emulsified oil, and effectively improve the separation effect of marine separators. Attached Figure Description

[0018] Figure 1 is a diagram of the composition of the marine emulsified oil high-speed separation system of this utility model. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 As shown, the high-speed marine emulsified oil separation system of this utility model mainly consists of a demulsification treatment zone, a separation and purification zone, a debris discharge zone, and an electrical control box.

[0021] The demulsification treatment area mainly consists of an emulsified oil tank 1, a shut-off valve 2, an oil pump 3, a flow meter 4, a heater 5, a pneumatic three-way valve 6, a filter 7, a demulsification chamber 8, a check valve 9, a compressor 10, a manual on / off valve 11, a differential pressure switch 12, and a pressure gauge 13. The heater 5 is selected according to the type of oil; if it is fuel oil, no heater is required; if it is lubricating oil, a heater is required.

[0022] A shut-off valve 2 is installed between the oil pump 3 and the emulsified oil tank 1. Before normal operation, the shut-off valve 2 needs to be opened, and the oil pump 3 draws oil from the emulsified oil tank 1 and sends it to the heater 5 for heating. Then, the oil returns to the emulsified oil tank 1 through the return port of the pneumatic three-way valve 6, thereby heating the emulsified oil in the emulsified oil tank 1 until the set temperature is reached. A one-way valve 9 is installed on the return port pipeline of the pneumatic three-way valve 6 to prevent backflow of oil in the emulsified oil tank 1. Afterwards, the electrical control box controls the pneumatic three-way valve 6 to switch the oil circuit. The emulsified oil passes through the filter 7 and then enters the demulsification chamber 8 for demulsification treatment. Small water droplets in the emulsified oil detach from the oil and combine into larger water droplets, which are free in the oil, forming an oil-water emulsion. Pressure gauges 13 and differential pressure switches 12 are installed before and after the demulsification chamber 8 to monitor the flow rate of the demulsification chamber filter element. When the demulsifying chamber filter element becomes clogged, creating a pressure difference that reaches a set value, the electrical control box will switch the oil circuit of the pneumatic three-way valve 6, allowing the oil to return to the emulsified oil tank 1 for circulation. At this time, it is necessary to manually operate the switch valve 11 to drain the residual oil in the demulsifying chamber, and then clean or replace the demulsifying filter element. The pneumatic three-way valve 6 requires compressed air to drive it, which is provided by the compressor 10. The compressed air is adjusted to the pressure required by the three-way valve through the pressure reducing valve.

[0023] The demulsification chamber 8 is made of stainless steel composite glass fiber filter media, which has a long channel effect for demulsification and can effectively break the oil-in-water emulsion phenomenon.

[0024] The separation and purification zone mainly consists of a separator 14, a clean oil tank 15, and a one-way valve 16. After demulsification in the demulsification chamber, the oil enters the separator 14 for separation. The centrifugal force of the high-speed rotation of the separator 14 causes the oil-water emulsion to gradually separate into layers. The separated clean oil is discharged into the clean oil tank 15. A one-way valve 16 is installed on the clean oil pipeline to prevent oil backflow. Separated water and other impurities enter the slag discharge cabinet.

[0025] The waste discharge area mainly consists of a level switch 17, a slag discharge cabinet 18, a slag discharge pump 19, a check valve 20, and a wastewater and waste residue tank 21. The slag discharge cabinet 18 receives water and impurities discharged from the separator 14, as well as residual oil discharged from the demulsification chamber. The slag discharge cabinet 18 is equipped with two level switches to monitor the liquid level. When the liquid level reaches a low level, the slag discharge pump 19 is controlled by the electrical control box to discharge slag. When the liquid level reaches a high level, not only must the slag discharge pump be started for slag discharge, but the oil supply pump and separator must also be stopped, and restarted only after the liquid level drops. A check valve is installed in the slag discharge pipeline.

[0026] The electrical control box controls the entire system and has alarm protection functions.

[0027] The specific working process of this utility model:

[0028] The oil pump draws emulsified oil into the heater, which heats the oil to a specified temperature and then sends it to the demulsification chamber via a pneumatic three-way valve (if it is fuel oil, the oil pump directly draws the emulsified oil through the pneumatic three-way valve into the demulsification chamber). The demulsification chamber effectively breaks up the oil emulsion. Water and other impurities in the slag discharge tank are discharged into the wastewater and waste residue tank via a slag discharge pump. Because lubricating oil has high viscosity and poor fluidity at room temperature, it greatly affects the demulsification and separation effect. Therefore, a heater is needed to raise the temperature of the lubricating oil and reduce its viscosity. A filter is installed before the demulsification chamber to filter out some larger solid particles and reduce clogging of the demulsification filter element. The interior of the demulsification chamber is made of stainless steel composite glass fiber filter media, which has a long-channel effect for demulsification and can effectively break up the water-in-oil emulsion. Pressure gauges and differential pressure switches are installed before and after the demulsification chamber to monitor the flow rate of the demulsification chamber filter element.

[0029] When the demulsifier filter becomes clogged, creating a pressure difference that reaches a set value, the control box will switch the pneumatic three-way valve oil circuit, allowing the oil to return to the emulsified oil tank for circulation. At this time, the manual valve on the demulsifier needs to be opened to drain the residual oil into the slag discharge cabinet, and then the demulsifier filter should be cleaned or replaced. The slag discharge cabinet is equipped with a level switch to monitor the liquid level. When the liquid level reaches a specific position, the control box will control the slag discharge pump to discharge the slag.

Claims

1. A high speed separation system for marine emulsified oil, characterized by: The device comprises a demulsification treatment area, a separation purification area, a sundry discharge area and an electric control box. The demulsification treatment area is used for extracting emulsified oil into a heater to effectively break the emulsification of the oil. The demulsification treatment area comprises an emulsified oil tank, a stop valve, an oil pump, a flowmeter, a heater, a pneumatic three-way valve, a filter, a demulsification bin, a check valve, a compressor, a hand-operated switch valve, a pressure difference switch and a pressure gauge. The oil outlet of the emulsified oil tank is connected to the heater through the stop valve, the oil pump and the flowmeter in sequence. The heater is divided into three branches through the pneumatic three-way valve. The first branch is connected to the oil inlet of the emulsified oil tank through the check valve, the second branch is connected to the demulsification bin through the filter, and the third branch is connected to the compressor. The demulsification bin is internally filled with stainless steel composite glass fiber filter material, has a long passage effect of demulsification, and can effectively break the emulsification of water-in-oil. The separation purification area is connected between the demulsification treatment area and the sundry discharge area, and is used for separating the oil after demulsification in the demulsification bin in a separator. The centrifugal force of high-speed rotation of the separator makes the oil-water emulsion gradually stratify. The separated clean oil is discharged into a clean oil tank, and the separated water and other impurities are discharged into a residue discharge tank. The separation purification area comprises the separator, the clean oil tank and a check valve. The oil inlet of the separator is connected to the demulsification bin, the clean oil outlet of the separator is connected to the clean oil tank, and the water and other impurities outlet of the separator is connected to the residue discharge tank of the sundry discharge area. The sundry discharge area is connected between the demulsification treatment area and the separation purification area, and receives the water, impurities discharged from the separator of the separation purification area and the residual oil discharged from the demulsification bin of the demulsification treatment area through the residue discharge tank. The sundry discharge area comprises a liquid level switch, the residue discharge tank, a residue discharge pump, a check valve and a waste water and residue tank. The residue discharge tank is connected to the waste water and residue tank through the residue discharge pump and the check valve. The electric control box is connected to the demulsification treatment area, the separation purification area and the sundry discharge area, and is used for controlling the whole system and having an alarm protection function.

2. The marine emulsified oil high-speed separation system of claim 1, wherein: The demulsification bin is provided with a pressure difference switch and a pressure gauge, and is connected to the residue discharge tank of the sundry discharge area through a hand-operated switch valve.

3. The marine emulsified oil high-speed separation system of claim 1, wherein: A check valve is arranged on the clean oil pipeline between the separator and the clean oil tank to prevent backflow of the oil.

4. The marine emulsified oil high-speed separation system of claim 1, wherein: The residue discharge tank is provided with a liquid level switch.

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