Marine emulsified oil high-speed separation system

Abstract

The present invention relates to a marine emulsified oil high-speed separation system, which comprises: a demulsification treatment region, which is used 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 demulsification treatment 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 deslagging cabinet; 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 problem that an existing marine separation system cannot effectively separate emulsified oil can be solved, and the separation effect of a marine separator is effectively improved.

Description

Technical Field

[0001] The invention relates to a high-speed separation system for marine emulsified oil, belonging to the technical field of fluid mechanical engineering. Background Art

[0002] Marine separators are mainly used to remove moisture and solid impurities from marine fuel and lubricating oil. However, due to the interaction between the moisture in marine fuel and lubricating oil and the additives in the oil that reduce the surface tension under circulation or stirring conditions, the moisture is evenly distributed in the oil in the form of extremely small droplets, causing the oil to emulsify and become emulsified oil. On the one hand, after the oil is emulsified, the integrity of the oil film on its surface is destroyed, which will cause wear and corrosion of the equipment during use, and the moisture and the additives in the oil will interact to produce pollutants such as precipitation and colloids, accelerating the deterioration of the oil; on the other hand, oil emulsification will increase the separation difficulty of the separator, reduce the separation effect, and affect the normal operation of the fuel and lubricating oil system on board.

[0003] Common demulsification methods include chemical method and physical method. The chemical demulsification method mainly achieves the purpose of demulsification by adding demulsifiers to the oil products to improve the anti-emulsification properties of the oil products. However, the requirements for demulsifiers are relatively high. Not only do they require the demulsifiers to have good oil solubility, low volatility, and non-toxicity, but they also need to consider the stability of the demulsifiers and the synergistic effect with the original additives. In contrast, the physical demulsification method is more suitable for the demulsification of marine fuel and lubricating oil. Physical demulsification methods include electrical precipitation, ultrasound, and filtration. Among them, the filtration method uses the characteristic that the pore size of the filter membrane is smaller than the pore size of the oil droplets, allowing only water to pass through, while blocking the oil droplets larger than the pore size of the filter membrane, thereby achieving oil demulsification. Summary of the invention

[0004] In order to solve the problem that the current marine separator has a poor separation effect on emulsified oil and further improve the separation effect of the marine separator, the present invention proposes a marine emulsified oil high-speed separation system.

[0005] To achieve the above object, the technical solution of the present invention is: a high-speed separation system for marine emulsified oil, including a demulsification treatment area, a separation and purification area, a debris discharge area, and an electric control box, wherein:

[0006] Demulsification treatment area, used to extract the emulsified oil into the heater to effectively demulsify the oil;

[0007] The separation and purification area is connected to the demulsification treatment area and the demulsification treatment area. It is used to separate the oil after demulsification in the emulsion silo into the separator. The centrifugal force of the high-speed rotation of the separator makes the oil-water emulsion gradually stratify. The separated clean oil is discharged into the clean oil tank, and the separated water and other impurities enter the slag discharge cabinet;

[0008] The debris discharge area connects the demulsification treatment area and the separation purification area, and receives the moisture and impurities discharged from the separator in the separation purification area and the residual oil discharged from the demulsification bin in the demulsification treatment area through the slag discharge cabinet;

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

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

[0011] Furthermore, a pressure differential switch and a pressure gauge are provided on the demulsification bin, and are connected to a slag discharge cabinet in the debris discharge area through a manual switch valve.

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

[0013] Furthermore, the separation and purification area is composed of a separator, a clean oil tank, and a one-way 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 moisture and other impurities discharge outlet of the separator is connected to the slag discharge cabinet.

[0014] Furthermore, a one-way valve is provided on the clean oil pipeline between the separator and the clean oil tank to prevent oil backflow.

[0015] Furthermore, the debris discharge area is composed of a liquid level switch, a slag discharge cabinet, a slag discharge pump, a check valve, and a wastewater and waste slag box. The slag discharge cabinet is connected to the wastewater and waste slag box through the slag discharge pump and the check valve.

[0016] Furthermore, the slag discharge cabinet is provided with a liquid level switch.

[0017] The beneficial effects of the present invention are:

[0018] The present invention can solve the problem that the existing marine separation system cannot effectively separate the emulsified oil, and effectively improve the separation effect of the marine separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a composition diagram of the marine emulsified oil high-speed separation system of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 1 As shown, a high-speed separation system for emulsified oil for use on a ship of the present invention is mainly composed of a demulsification treatment area, a separation and purification area, a debris discharge area and an electric control box.

[0022] The demulsification treatment area is mainly composed of an emulsified oil tank 1, a stop valve 2, an oil pump 3, a flow meter 4, a heater 5, a pneumatic three-way valve 6, a filter 7, a demulsification bin 8, a one-way valve 9, a compressor 10, a manual switch valve 11, a differential pressure switch 12, and a pressure gauge 13. The heater 5 (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).

[0023] A stop valve 2 is provided between the oil delivery pump 3 and the emulsified oil tank 1. Before normal operation, the stop valve 2 needs to be opened, and the oil delivery pump 3 draws oil from the emulsified oil tank 1, sends it to the heater 5 for heating, and then passes through the oil return port of the pneumatic three-way valve 6 to the emulsified oil tank 1, so as to heat the emulsified oil in the emulsified oil tank 1 until the set temperature is reached. The oil return port pipeline of the pneumatic three-way valve 6 is provided with a one-way valve 9 to prevent the oil in the emulsified oil tank 1 from flowing back. After that, the electric control box controls the pneumatic three-way valve 6 to switch the oil circuit, and the emulsified oil passes through the filter 7 and enters the demulsification bin 8 for demulsification treatment. The small water droplets in the emulsified oil break away from the oil wrapping and combine into large water droplets, which are free in the oil to form an oil-water emulsion. Pressure gauges 13 and differential pressure switches 12 are provided before and after the demulsification bin 8 to monitor the flow rate of the demulsification bin filter element. When the demulsification bin filter is clogged and the pressure difference between the front and rear reaches the set value, the electric control box will switch the oil circuit of the pneumatic three-way valve 6 to allow the oil to return to the emulsified oil tank 1 for circulation. At this time, the switch valve 11 needs to be manually operated to discharge the residual oil in the demulsification bin, and then the demulsification filter element is cleaned or replaced. The pneumatic three-way valve 6 needs to be driven by compressed air, 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.

[0024] The interior of the demulsification bin 8 is in the form of stainless steel composite glass fiber filter material, which has a long channel effect of demulsification and can effectively break the emulsification phenomenon of oil-in-water.

[0025] The separation and purification area is mainly composed of a separator 14, a clean oil tank 15, and a one-way valve 16. The oil demulsified in the demulsification bin enters the separator 14 for separation. The centrifugal force of the high-speed rotation of the separator 14 gradually separates the oil-water emulsion. The clean oil after separation is discharged into the clean oil tank 15. The clean oil pipeline is provided with a one-way valve 16 to prevent oil backflow. The separated water and other impurities enter the slag discharge cabinet.

[0026] The debris discharge area is mainly composed of a liquid level switch 17, a slag discharge cabinet 18, a slag discharge pump 19, a check valve 20, and a wastewater and slag tank 21. The slag discharge cabinet 18 receives the water and impurities discharged from the separator 14 and the residual oil discharged from the demulsification bin. The slag discharge cabinet 18 is provided with two liquid level switches for monitoring the liquid level in the slag discharge cabinet. When the liquid level reaches a low level, the slag discharge pump 19 is controlled by the electric control box to discharge slag. When the liquid level reaches a high level, not only the slag discharge pump needs to be turned on for slag discharge, but also the oil supply pump and the separator need to be stopped and turned on again after the liquid level drops. The slag discharge pipeline is provided with a check valve.

[0027] The electric control box controls the entire system and has an alarm protection function.

[0028] The specific working process of the present invention is:

[0029] The oil delivery pump extracts the emulsified oil into the heater, and the heater heats the emulsified oil to the specified temperature and then sends it to the demulsification bin through the pneumatic three-way valve (if it is fuel oil, the oil delivery pump directly extracts the emulsified oil through the pneumatic three-way valve into the demulsification bin). The demulsification bin can effectively demulsify the oil. . The water and other impurities in the slag discharge cabinet are discharged into the wastewater and waste slag box through the slag discharge pump. Since the lubricating oil has high viscosity and poor fluidity at room temperature, it will greatly affect the demulsification and separation effect. Therefore, the heater is required to increase the temperature of the lubricating oil and reduce its viscosity. A filter is set in front of the demulsification bin to filter out some larger solid particle impurities and reduce the clogging of the demulsification filter element. The interior of the demulsification bin is in the form of stainless steel composite glass fiber filter material, which has a long channel effect of demulsification and can effectively demulsify the oil-in-water emulsification phenomenon. Pressure gauges and differential pressure switches are set before and after the demulsification bin to monitor the flow rate of the demulsification bin filter element.

[0030] When the filter element of the demulsification bin is clogged and the pressure difference between the front and rear reaches the set value, the electric control box will switch the pneumatic three-way valve oil circuit to allow the oil to return to the emulsified oil tank for circulation. At this time, the manual valve on the demulsification bin needs to be opened to discharge the residual oil into the slag discharge cabinet, and then clean or replace the demulsification filter element. The slag discharge cabinet is equipped with a liquid level switch to monitor the liquid level. When the liquid level reaches a specific position, the electric control box controls the slag discharge pump to discharge the slag.

Claims

1. A high-speed separation system for marine emulsified oil, characterized in that: It includes demulsification treatment area, separation and purification area, debris discharge area, and electric control box, among which: Demulsification treatment area, used to extract the emulsified oil into the heater to effectively demulsify the oil; The separation and purification area is connected to the demulsification treatment area and the demulsification treatment area. It is used to separate the oil after demulsification in the emulsion silo into the separator. The centrifugal force of the high-speed rotation of the separator makes the oil-water emulsion gradually stratify. The separated clean oil is discharged into the clean oil tank, and the separated water and other impurities enter the slag discharge cabinet; The debris discharge area connects the demulsification treatment area and the separation purification area, and receives the moisture and impurities discharged from the separator in the separation purification area and the residual oil discharged from the demulsification bin in the demulsification treatment area through the slag discharge cabinet; The electric control box controls and connects the demulsification treatment area, separation and purification area, and debris discharge area. It is used to control the entire system and has an alarm protection function.

2. The marine emulsified oil high-speed separation system according to claim 1, characterized in that: The demulsification treatment area is composed 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 bin, a one-way 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 through the shut-off valve, the oil pump, and the flow meter in sequence. The heater is divided into three routes after the pneumatic three-way valve: the first route is connected to the oil inlet of the emulsified oil tank through the one-way valve, the second route is connected to the demulsification bin through the filter, and the third route is connected to the compressor.

3. The marine emulsified oil high-speed separation system according to claim 2, characterized in that: The demulsification bin is equipped with a differential pressure switch and a pressure gauge, and is connected to the slag discharge cabinet in the debris discharge area through a manual switch valve.

4. The marine emulsified oil high-speed separation system according to claim 2, characterized in that: The interior of the demulsification chamber is made of stainless steel composite glass fiber filter material, which has a long channel effect of demulsification and can effectively break the emulsification phenomenon of oil-in-water.

5. The marine emulsified oil high-speed separation system according to claim 1, characterized in that: The separation and purification area consists of a separator, a clean oil tank, and a one-way 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 moisture and other impurities discharge outlet of the separator is connected to the slag discharge cabinet.

6. The high-speed separation system for marine emulsified oil according to claim 1, characterized in that: A one-way valve is provided on the clean oil pipeline between the separator and the clean oil tank to prevent oil backflow.

7. The marine emulsified oil high-speed separation system according to claim 1, characterized in that: The debris discharge area is composed of a liquid level switch, a slag discharge cabinet, a slag discharge pump, a check valve, and a wastewater and waste slag tank. The slag discharge cabinet is connected to the wastewater and waste slag tank through a slag discharge pump and a check valve.

8. The marine emulsified oil high-speed separation system according to claim 7, characterized in that: The slag discharge cabinet is equipped with a liquid level switch.

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