A device for deep purification of industrial lubricating oils

Abstract

The utility model provides a kind of for industrial lubricating oil's depth purification device, it is related to lubricating oil purification technical field to solve the problem that the precision difference of filter core is larger in the simple water removal filtering function of traditional oil filter, including oil storage tank;Oil storage tank is connected with the import of feed pump by control valve A;Piping heater is connected with the feed inlet of negative pressure evaporator;The discharge outlet of negative pressure evaporator bottom is connected with the import of dehydration circulating pump by control valve B;Dehydration circulating pump is connected with the feed inlet of mesoporous adsorption filter by control valve D.The whole process adopts vacuum dehydration, mesoporous adsorption filtration, membrane hole filtration purification process, not only can effectively remove water in waste lubricating oil, and can effectively adsorb and remove oxidation condensate, paint film, oil sludge and other organic impurities in lubricating oil, ensure that the cleanliness index of filtered lubricating oil meets the cleanliness requirement of high-end equipment for lubricating oil.

Description

Technical Field

[0001] This utility model belongs to the field of lubricating oil purification technology, and more specifically, it relates to a deep purification device for industrial lubricating oil. Background Technology

[0002] Currently, with the development of industrial enterprises, the processing precision, automation, and intelligence level of equipment are gradually improving. In order to ensure the long-term stable operation of industrial equipment, the equipment has put forward increasingly higher requirements for the cleanliness of oil, especially for high-end equipment systems such as high-pressure servo systems, wind power gearboxes, large compressor systems, and thermal power turbine systems. However, lubricating oil will inevitably have pollution problems during use. Regular oil changes and maintenance will greatly increase the purchase cost of new oil, increase the amount of hazardous waste emissions, and affect the production efficiency of enterprises. This is where this device is needed.

[0003] Based on existing technology, it has been found that traditional oil filters only have simple water removal and filtration functions, and the filter elements vary greatly in precision. More importantly, these transmission-type filter elements cannot effectively filter oxides and sludge in lubricating oil, causing the filtered oil to fail to meet the requirements of long-term equipment operation. Prolonged use will cause irreversible mechanical damage to the equipment and affect its service life. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a deep purification device for industrial lubricating oil, which solves the problem that traditional oil filters only have simple water removal and filtration functions, and that the filter elements have significant differences in precision.

[0005] This utility model discloses a deep purification device for industrial lubricating oil, which is achieved by the following specific technical means:

[0006] A deep purification device for industrial lubricating oil, comprising an oil storage tank;

[0007] The oil storage tank is connected to the inlet of the feed pump via control valve A; the outlet of the feed pump is connected to the pipeline heater; the pipeline heater is connected to the inlet of the negative pressure evaporator; the outlet at the bottom of the negative pressure evaporator is connected to the inlet of the dehydration circulation pump via control valve B; the dehydration circulation pump is connected to the inlet of the evaporation circulation tank via control valve C; the outlet of the evaporation circulation tank is connected to the pipeline between the oil storage tank and the feed pump via control valve C; the outside of the negative pressure evaporator is connected to the air cooler; the air cooler is connected to the inlet of the condensate receiving tank; the dehydration circulation pump is connected to the inlet of the mesoporous adsorption filter via control valve D; the outlet of the mesoporous adsorption filter is connected to the inlet of the membrane filter.

[0008] Furthermore, a discharge valve is provided at the outlet at the bottom of the condensate receiving tank; the condensate receiving tank is externally connected to a vacuum unit.

[0009] Furthermore, the negative pressure evaporator is equipped with a packing bed; the packing bed is made of Raschig rings and Pall rings.

[0010] Furthermore, the mesoporous adsorption filter is provided with filter element A inside.

[0011] Furthermore, the membrane filter is equipped with a membrane filter element inside; the membrane filter element is made of PTFE or polytetrafluoroethylene; the purified oil is discharged through a pipe from the bottom outlet of the membrane filter.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In this device, the overall process adopts a purification process of vacuum dehydration + mesoporous adsorption filtration + membrane filtration. It can not only effectively remove water from waste lubricating oil, but also effectively adsorb and remove organic impurities such as oxide condensates, varnish, and sludge in the lubricating oil. The supplemented membrane filter element can achieve a maximum filtration accuracy of 0.5μm, ensuring that the cleanliness index of the lubricating oil after filtration meets the cleanliness requirements of high-end equipment. The viscosity, moisture, and cleanliness index of the lubricating oil fully meet the operating requirements of the equipment, achieving the goal of resource recycling and turning waste into treasure. It can not only reduce the amount of hazardous waste generated by industrial enterprises, but also greatly reduce the procurement cost of high-cleanliness lubricating oil. The device adopts an overall skid-mounted design, which facilitates equipment movement and operation.

[0014] 2. In this device, the negative pressure evaporator adopts a packing design, with Raschig rings, Pall rings and other packing beds inside, which greatly increases the evaporation area of ​​the material and can effectively improve the dehydration efficiency.

[0015] 3. In this device, organic impurities such as oxidized condensates, varnish, and sludge in the lubricating oil are effectively removed by a mesoporous adsorption filter, which blocks free radical reactions during the oxidation process of the lubricating oil and effectively extends the service life of the lubricating oil.

[0016] 4. In this device, the membrane filter element made of PTFE, polytetrafluoroethylene and other materials has high filtration accuracy, far exceeding that of traditional paper filter elements made of glass fiber and other materials. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0019] 1. Oil storage tank; 2. Control valve A; 3. Feed pump; 4. Pipeline heater; 5. Negative pressure evaporator; 501. Packed bed; 6. Control valve B; 7. Dehydration circulation pump; 8. Control valve C; 9. Evaporation circulation tank; 10. Control valve E; 11. Control valve D; 12. Mesoporous adsorption filter; 1201. Filter element A; 13. Membrane filter; 1301. Membrane filter element; 14. Air cooler; 15. Condensate receiving tank; 16. Drain valve; 17. Vacuum unit. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0021] Example:

[0022] As attached Figure 1 As shown:

[0023] This utility model provides a deep purification device for industrial lubricating oil, including an oil storage tank 1;

[0024] Oil storage tank 1 is connected to the inlet of feed pump 3 via control valve A2; the outlet of feed pump 3 is connected to pipe heater 4; pipe heater 4 is connected to the inlet of negative pressure evaporator 5; the outlet at the bottom of negative pressure evaporator 5 is connected to the inlet of dehydration circulation pump 7 via control valve B6; dehydration circulation pump 7 is connected to the inlet of evaporation circulation tank 9 via control valve C8; the outlet of evaporation circulation tank 9 is connected to the pipeline between oil storage tank 1 and feed pump 3 via control valve E10; the outside of negative pressure evaporator 5 is connected to air cooler 14; air cooler 14 is connected to the inlet of condensate receiving tank 15; dehydration circulation pump 7 is connected to the inlet of mesoporous adsorption filter 12 via control valve D11; the outlet of mesoporous adsorption filter 12 is connected to the inlet of membrane filter 13; pipe heater 4 uses electric heating, with a surface heating power ≤2.5W / cm². 2 The heating temperature is set to 60℃-75℃; the entire device adopts a skid-mounted design for easy movement and operation.

[0025] The condensate receiving tank 15 is equipped with a discharge valve 16 at the outlet at the bottom. The condensate receiving tank 15 is connected to the vacuum unit 17. The negative pressure condition is provided by the vacuum unit 17. The vacuum degree in the negative pressure evaporator 5 is controlled between -0.09MPa and -0.08MPa. When the moisture content in the oil is high, the dehydration process can be carried out by the dehydration circulation pump 7 until the moisture content in the oil is ≤0.03%. The evaporated water vapor is condensed by the air cooler 14 and received into the condensate receiving tank 15. It is then periodically discharged through the discharge valve 16.

[0026] The negative pressure evaporator 5 is equipped with a packing bed 501; the packing bed 501 is made of Raschig rings and Pall rings; the packing bed 501, including Raschig rings and Pall rings, is used to increase the evaporation area of ​​the material.

[0027] The mesoporous adsorption filter 12 is equipped with a filter element A1201. When the moisture content in the oil reaches the required level, the outlet control valve D11 of the dehydration circulation pump 7 switches to the inlet of the mesoporous adsorption filter 12. The filter element A1201 inside the filter achieves efficient adsorption and filtration of the target substance through the high specific surface area and controllable pore size structure of the mesoporous material. The pollutants are trapped and the clean fluid passes through until the adsorption is saturated. This removes oxidized condensates, varnish, sludge and other organic impurities from the lubricating oil, blocks free radical reactions in the oil oxidation process, and thus slows down the oxidation process of the purified oil.

[0028] The membrane filter 13 contains a membrane filter element 1301. The membrane filter element 1301 is made of PTFE and polytetrafluoroethylene. The purified oil is discharged through a pipe at the bottom outlet of the membrane filter 13. The oil after adsorption and filtration enters the membrane filter 13. The membrane filter element 1301 is made of PTFE, polytetrafluoroethylene and other materials, and the maximum filtration accuracy can reach 0.5μm. It can effectively filter mechanical impurities such as wear debris and hard particles in the oil. The cleanliness of the filtered oil can reach up to NAS4 level, which fully meets the requirements of industrial equipment, especially high-end die casting systems and hydraulic servo systems, for the cleanliness of lubricating oil.

[0029] The specific usage and function of this embodiment are as follows:

[0030] In this invention, the waste lubricating oil in the oil storage tank 1 is pumped by the feed pump 3 through the pipeline heater 4 to the negative pressure evaporator 5. The negative pressure evaporator 5 adopts a packing design, with Raschig rings, Pall rings, and other packing bed 501 inside to increase the evaporation area of ​​the material. The negative pressure condition is provided by the vacuum unit 17. When the moisture content in the oil is high, it can be dehydrated by the dehydration circulation pump 7 until the moisture content in the oil is ≤0.03%. The evaporated water vapor is condensed by the air cooler 14 and received in the condensate receiving tank 15, and then periodically discharged through the discharge valve 16. When the moisture content in the oil reaches the target... After the requirement is met, the outlet valve D11 of the dehydration circulation pump 7 is switched to the inlet of the mesoporous adsorption filter 12, and the filter element A1201 is used to remove organic impurities such as oxidized condensates, varnish, and sludge from the lubricating oil. This blocks the free radical reaction during the oil oxidation process, thereby slowing down the oxidation process of the purified oil. The oil after adsorption filtration enters the membrane filter 13 through the outlet of the mesoporous adsorption filter 12, and is filtered by the membrane filter element 13. This effectively filters mechanical impurities such as wear debris and hard particles in the oil, and then the purified lubricating oil is discharged through the bottom outlet external pipe.

Claims

1. A deep purification device for industrial lubricating oil, characterized in that: Including oil storage tanks (1); The oil storage tank (1) is connected to the inlet of the feed pump (3) via control valve A (2); the outlet of the feed pump (3) is connected to the pipe heater (4); the pipe heater (4) is connected to the inlet of the negative pressure evaporator (5); the outlet at the bottom of the negative pressure evaporator (5) is connected to the inlet of the dehydration circulation pump (7) via control valve B (6); the dehydration circulation pump (7) is connected to the inlet of the evaporation circulation tank (9) via control valve C (8); the evaporation circulation... The outlet of tank (9) is connected to the pipeline between oil storage tank (1) and feed pump (3) through control valve E (10); the negative pressure evaporator (5) is connected to the outside of air cooler (14); the air cooler (14) is connected to the inlet of condensate receiving tank (15); the dehydration circulation pump (7) is connected to the feed port of mesoporous adsorption filter (12) through control valve D (11); the outlet of mesoporous adsorption filter (12) is connected to the inlet of membrane filter (13).

2. The deep purification device for industrial lubricating oil according to claim 1, characterized in that: A discharge valve (16) is provided at the discharge port at the bottom of the condensate receiving tank (15); the condensate receiving tank (15) is connected to the vacuum unit (17).

3. The deep purification device for industrial lubricating oil according to claim 1, characterized in that: The negative pressure evaporator (5) is equipped with a packing bed (501); the packing bed (501) is made of Raschig rings and Pall rings.

4. The deep purification device for industrial lubricating oil according to claim 1, characterized in that: The mesoporous adsorption filter (12) is provided with filter element A (1201).

5. A deep purification device for industrial lubricating oil according to claim 1, characterized in that: The membrane filter (13) is equipped with a membrane filter element (1301); the membrane filter element (1301) is made of PTFE or polytetrafluoroethylene; the bottom outlet of the membrane filter (13) discharges purified oil through a pipe.

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