Lubricating oil base oil production system

Abstract

The utility model provides a lubricating oil base oil production system which comprises a rectifying tower used for rectifying raw materials to be treated; the temporary storage tank group is connected with the rectifying tower, so that the lubricating oil base oil product generated after being divided by the rectifying tower flows into the temporary storage tank group; the detection device is communicated with the temporary storage tank group so as to detect the distillation range, the kinematic viscosity and the pour point of the lubricating oil base oil product in the temporary storage tank group; each reflux assembly comprises a reflux pipe and a reflux driving pump, one end of the reflux pipe is connected with the rectifying tower, the other end of the reflux pipe is communicated with the temporary storage tank group, the reflux driving pump is arranged on the reflux pipe, and the reflux driving pump is connected with the detection device; and the reflux driving pump is controlled to drive the lubricating oil base oil product in the temporary storage tank group to return to the rectifying tower through the reflux pipe to be segmented. The cutting device solves the problem that in the prior art, the cutting precision of lubricating oil base oil is not high.

Description

Technical Field

[0001] The utility model relates to the technical field of lubricating oil production, in particular to a lubricating oil base oil production system. Background Art

[0002] Lubricant base oil is the main component of finished lubricants, accounting for about 80% by mass. The quality of base oil determines the performance of finished lubricants. Coal-based base oil has the characteristics of high viscosity index, low evaporation loss, good low temperature performance and cleaning and dispersion performance, almost no sulfur and aromatic hydrocarbons, low nitrogen, and no heavy metals. Therefore, lubricants with coal-based base oil as the main component have the basic characteristics of wide operating temperature range, good fuel economy, green environmental protection, clean and efficient.

[0003] In the production process of lubricating oil base oil, Fischer-Tropsch hydrorefining tail oil can be used. The Fischer-Tropsch hydrorefining tail oil is subjected to isomerization dewaxing reaction and hydrorefining reaction to obtain full-fraction lubricating oil base oil. The full-fraction lubricating oil base oil needs to be cut under normal pressure and pressure to obtain lubricating oil base oil of different grades.

[0004] However, the existing production process has low cutting accuracy for lubricant base oils, and there is a lot of overlap between the various fractions in the oil product, resulting in low quality of the lubricant base oil products and insufficient variety of base oil grades, which can no longer meet current market demand. Utility Model Content

[0005] The main purpose of the utility model is to provide a lubricating oil base oil production system to solve the problem of low cutting precision of lubricating oil base oil in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a lubricating oil base oil production system, comprising: a distillation tower, which is used to perform distillation treatment on the raw materials to be processed; a temporary storage tank group, which is connected to the distillation tower so that the lubricating oil base oil product produced after being divided by the distillation tower flows into the temporary storage tank group; a detection device, which is connected to the temporary storage tank group to detect the distillation range, kinematic viscosity and pour point of the lubricating oil base oil product in the temporary storage tank group; a reflux component, each reflux component includes a reflux pipe and a reflux drive pump, one end of the reflux pipe is connected to the distillation tower, and the other end of the reflux pipe is connected to the detection device, the reflux drive pump is arranged on the reflux pipe, and the reflux drive pump is connected to the detection device, so as to control the reflux drive pump to drive the lubricating oil base oil product in the temporary storage tank group to return to the distillation tower through the reflux pipe for division according to the detection result of the detection device.

[0007] Furthermore, the lubricating oil base oil production system also includes: a liquid level meter, which is installed in the temporary storage tank group to detect the liquid level of the lubricating oil base oil product in the temporary storage tank group.

[0008] Furthermore, the lubricating oil base oil production system also includes: a first connecting component, including a first connecting pipe and a first connecting drive pump, the first connecting drive pump is arranged on the first connecting pipe, the two ends of the first connecting pipe are respectively connected to the temporary storage tank group and the detection device, and the first connecting drive pump is connected to the liquid level meter to control the start and stop of the first connecting drive pump according to the detection result of the liquid level meter.

[0009] Furthermore, the temporary storage tank group includes a first temporary storage tank and a second temporary storage tank, the first temporary storage tank is connected to the top of the distillation tower to obtain the first lubricating base oil product after being divided by the distillation tower, and the second temporary storage tank is connected to the bottom of the distillation tower to obtain the second lubricating base oil product after being divided by the distillation tower; a reflux component is provided between the first temporary storage tank and the distillation tower, and between the second temporary storage tank and the distillation tower; a first connecting component is provided between the first temporary storage tank and the detection device, and between the second temporary storage tank and the detection device; wherein, there are multiple liquid level gauges, and at least one liquid level gauge is provided in the first temporary storage tank and the second temporary storage tank.

[0010] Furthermore, the lubricating oil base oil production system includes: a raw material tank for storing and preparing raw materials; a second connecting component, including a second connecting pipe and a second connecting drive pump, the second connecting drive pump is arranged on the second connecting pipe, and the two ends of the second connecting pipe are respectively connected to the raw material tank and the distillation tower; wherein, the second connecting drive pump is connected to a liquid level meter to control the start and stop of the second connecting drive pump according to the detection result of the liquid level meter.

[0011] Furthermore, there are multiple distillation towers, temporary storage tank groups, and reflux components, and the multiple distillation towers and the multiple temporary storage tank groups are arranged one-to-one, the multiple temporary storage tank groups and the multiple reflux components are connected one-to-one, the multiple reflux components are connected one-to-one to the multiple distillation towers, and the multiple temporary storage tank groups are all connected to the detection device; wherein the multiple distillation towers have different numbers of tower sections, and the prepared raw materials can be selectively introduced into one of the multiple distillation towers.

[0012] Furthermore, a distillation tower and a temporary storage tank group form a group of segmentation components, and multiple segmentation components are connected in series in sequence; each temporary storage tank group includes: a first temporary storage tank and a second temporary storage tank, the first temporary storage tank is connected to the top of the distillation tower to obtain the first lubricating oil base oil product after segmentation by the distillation tower, and the second temporary storage tank is connected to the bottom of the distillation tower to obtain the second lubricating oil base oil product after segmentation by the distillation tower; wherein the second temporary storage tank of the previous segmentation component is connected to the distillation tower of the next segmentation component.

[0013] Furthermore, the detection device includes: a first detection part, which is connected to a first temporary storage tank of multiple split components to detect the distillation range, kinematic viscosity and pour point of a first lubricating oil base oil product; and a second detection part, which is connected to a second temporary storage tank of multiple split components to detect the distillation range, kinematic viscosity and pour point of a second lubricating oil base oil product.

[0014] Furthermore, along the series connection direction of the multiple splitting components, the number of tower sections of the multiple distillation towers gradually decreases.

[0015] Furthermore, the detection device comprises: a sampling and collecting component, which is connected to the temporary storage tank group to collect the lubricating oil base oil product in the temporary storage tank group.

[0016] Applying the technical solution of the utility model, the utility model provides a lubricating base oil production system, including: a distillation tower, used for distilling the raw materials to be processed; a temporary storage tank group, the temporary storage tank group is connected to the distillation tower, so that the lubricating base oil product produced after the distillation tower is divided flows into the temporary storage tank group; a detection device, the detection device is connected to the temporary storage tank group, so as to detect the distillation range, kinematic viscosity, and pour point of the lubricating base oil product in the temporary storage tank group; a reflux component, each reflux component includes a reflux pipe and a reflux drive pump, one end of the reflux pipe is connected to the distillation tower, the other end of the reflux pipe is connected to the temporary storage tank group, the reflux drive pump is arranged on the reflux pipe, and the reflux drive pump is connected to the detection device, so as to control the reflux drive pump to drive the lubricating base oil product in the temporary storage tank group to return to the distillation tower through the reflux pipe for division according to the detection result of the detection device. Through the above-mentioned setting, the lubricating base oil product can be controlled to be repeatedly cut through the distillation tower according to the actual distillation range, kinematic viscosity, and pour point of the lubricating base oil product, thereby improving the production cutting accuracy of the lubricating base oil. Furthermore, the present application may be provided with a plurality of distillation towers. Optionally, the plurality of distillation towers may be used separately, or the plurality of distillation towers may be connected in series in sequence to achieve continuous cutting of the raw materials for preparation, so as to obtain a plurality of different grades of lubricating oil base oils. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 The overall structural schematic diagram of an embodiment of a lubricating oil base oil production system according to the utility model is shown.

[0019] The above drawings include the following reference numerals:

[0020] 1. distillation tower; 2. temporary storage tank group; 21. first temporary storage tank; 22. second temporary storage tank; 3. raw material tank; 4. second connecting component; 40. second connecting pipe; 5. heating device; 50. jacket; 51. heater. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Please refer to Figure 1 The utility model provides a lubricating oil base oil production system, comprising: a distillation tower 1, used for distilling a raw material to be processed; a temporary storage tank group 2, which is connected to the distillation tower 1, so that the lubricating oil base oil product produced after being divided by the distillation tower flows into the temporary storage tank group 2; a detection device, which is connected to the temporary storage tank group 2, so as to detect the distillation range, kinematic viscosity and pour point of the lubricating oil base oil product in the temporary storage tank group 2; a reflux component, each reflux component comprises a reflux pipe and a reflux drive pump, one end of the reflux pipe is connected to the distillation tower 1, and the other end of the reflux pipe is connected to the temporary storage tank group 2, the reflux drive pump is arranged on the reflux pipe, and the reflux drive pump is connected to the detection device, so as to control the reflux drive pump to drive the lubricating oil base oil product in the temporary storage tank group 2 to return to the distillation tower 1 through the reflux pipe for division according to the detection result of the detection device. Through the above-mentioned arrangement, the lubricating oil base oil product can be controlled to be repeatedly cut through the distillation tower 1 according to the actual distillation range, kinematic viscosity and pour point of the lubricating oil base oil product, thereby improving the production cutting accuracy of the lubricating oil base oil, and the lubricating oil base oil product according to actual demand can be repeatedly cut through the distillation tower 1 to obtain lubricating oil base oil products of different brands.

[0023] Among them, the reflux ratio of the reflux component is controlled according to the detection result of the detection device.

[0024] In the present application, the lubricating base oil production system further includes: a liquid level meter installed in the temporary storage tank group 2 to detect the liquid level of the lubricating base oil product in the temporary storage tank group 2. Through the above arrangement, the reliability of the operation of the lubricating base oil production system can be improved.

[0025] In the present application, the lubricating oil base oil production system also includes: a first connecting component, including a first connecting pipe and a first connecting driving pump, the first connecting driving pump is arranged on the first connecting pipe, the two ends of the first connecting pipe are respectively connected to the temporary storage tank group 2 and the detection device, and the first connecting driving pump is connected to the liquid level meter to control the start and stop of the first connecting driving pump according to the detection result of the liquid level meter. In this way, the reliability of the operation of the lubricating oil base oil production system is improved.

[0026] During the specific implementation of the embodiment of the present application, if the liquid level meter detects that the liquid level of the lubricating oil base oil product in the temporary storage tank group 2 is higher than a preset height, the first connecting drive pump is controlled to start so that the lubricating oil base oil product in the temporary storage tank group 2 flows to the detection device, and the detection device is controlled to start at the same time to detect the lubricating oil base oil product.

[0027] Specifically, the temporary storage tank group 2 includes a first temporary storage tank 21 and a second temporary storage tank 22. The first temporary storage tank 21 is connected to the top of the distillation tower 1 to obtain the first lubricating base oil product after the distillation tower 1 splits, and the second temporary storage tank 22 is connected to the bottom of the distillation tower 1 to obtain the second lubricating base oil product after the distillation tower 1 splits; a reflux component is provided between the first temporary storage tank 21 and the distillation tower 1, and between the second temporary storage tank 22 and the distillation tower 1; a first connecting component is provided between the first temporary storage tank 21 and the detection device, and between the second temporary storage tank 22 and the detection device; wherein, there are multiple liquid level gauges, and at least one liquid level gauge is provided in the first temporary storage tank 21 and the second temporary storage tank 22. Through the above-mentioned settings, the detection accuracy of the liquid level in the temporary storage tank can be improved.

[0028] Specifically, the lubricating base oil production system includes: a raw material tank 3, which is used to store and prepare raw materials; a second connecting component 4, which includes a second connecting pipe 40 and a second connecting drive pump, the second connecting drive pump is arranged on the second connecting pipe 40, and the two ends of the second connecting pipe are respectively connected to the raw material tank 3 and the distillation tower 1; wherein the second connecting drive pump is connected to a liquid level meter to control the start and stop of the second connecting drive pump according to the detection result of the liquid level meter. Through the above arrangement, it is possible to prevent excessive lubricating base oil products from being generated in the temporary storage tank group 2, so that the reliability of the operation of the lubricating base oil production system can be further improved.

[0029] In the present application, there are multiple distillation towers 1, temporary storage tank groups 2, and reflux assemblies. Multiple distillation towers 1 and multiple temporary storage tank groups 2 are arranged one-to-one, multiple temporary storage tank groups 2 and multiple reflux assemblies are connected one-to-one, multiple reflux assemblies are connected one-to-one with multiple distillation towers 1, and multiple temporary storage tank groups 2 are connected with the detection device; wherein, the number of tower sections of multiple distillation towers 1 is different, and the prepared raw materials can be selectively introduced into one of the multiple distillation towers 1. In this way, lubricating oil products with different distillation ranges, kinematic viscosities, and pour points can be produced, so that the lubricating oil base oil product undergoes multiple reflux gas-liquid phase exchanges, reduces the overlapping parts between the fractions of various base lubricating oil products, improves the cutting accuracy of the fractions, ensures the quality of the product, and improves the versatility of the lubricating oil base oil production system.

[0030] In an optional embodiment of the present application, a distillation tower 1 and a temporary storage tank group 2 form a group of segmentation components, and multiple segmentation components are connected in series in sequence; each temporary storage tank group 2 includes: a first temporary storage tank 21 and a second temporary storage tank 22, the first temporary storage tank 21 is connected to the top of the distillation tower 1 to obtain the first lubricating oil base oil product after segmentation by the distillation tower 1, and the second temporary storage tank 22 is connected to the bottom of the distillation tower 1 to obtain the second lubricating oil base oil product after segmentation by the distillation tower 1; wherein the second temporary storage tank 22 of the previous segmentation component is connected to the distillation tower 1 of the next segmentation component.

[0031] In the prior art, the segmentation of lubricating base oil involves isomerization reaction, hydrogenation reaction, and then distillation cutting. The present application sets up multiple distillation towers 1, multiple temporary storage tank groups 2, and multiple reflux components, so that base oil products of different grades can be obtained.

[0032] Furthermore, the multiple distillation towers 1 of the present application can be used separately or in series. When the multiple distillation towers are connected in series, the prepared raw materials can be cut continuously for multiple times to obtain base oil products of different grades. Through the above-mentioned arrangement, there is no need to carry out isomerization reaction and hydrogenation reaction. In this way, the production process of lubricant base oil is simplified and the production process of lubricant base oil is simple.

[0033] In the embodiment of the present application, the prepared raw materials are transported to the distillation tower 1 for distillation, and the gas-liquid two phases in the tower exchange heat and mass, so that the light components are separated from the top of the tower and the heavy components are separated from the bottom of the tower. A part of the material at the top of the tower is refluxed into the tower under the control of the reflux ratio controller, and the other part enters the first temporary storage tank 21, and the heavy components enter the second temporary storage tank 22.

[0034] In the embodiment of the present application, when there are multiple distillation towers 1, temporary storage tank group 2, and reflux components, the prepared raw materials are transported to the distillation tower 1 for distillation, and the gas-liquid two-phase in the tower exchanges heat and mass, thereby separating the light components from the top of the tower and the heavy components from the bottom of the tower. A part of the material at the top of the tower is refluxed into the tower under the control of the reflux ratio controller, and the other part enters the first temporary storage tank 21, and the heavy components enter the second temporary storage tank 22, and the second lubricating oil base oil product in the second temporary storage tank 22 is transported to the next distillation tower 1 for further distillation; specifically, there are three distillation towers 1, temporary storage tank group 2, and reflux components, and the lubricating oil base oil product is divided in sequence according to the above process.

[0035] In the embodiment of the present application, the detection device includes: a first detection part, the first detection part is connected to the first temporary storage tank 21 of the plurality of split components to detect the distillation range, kinematic viscosity, and pour point of the first lubricating oil base oil product; a second detection part, the second detection part is connected to the second temporary storage tank 22 of the plurality of split components to detect the distillation range, kinematic viscosity, and pour point of the second lubricating oil base oil product. The detection efficiency of the detection device can be improved by setting the first detection part and the second detection part.

[0036] Optionally, there are multiple first detection units and multiple second detection units to further improve the detection efficiency of the detection device.

[0037] In the embodiment of the present application, along the series connection direction of the multiple split components, the number of tower sections of the multiple distillation towers 1 is gradually reduced. In this way, high-quality lubricating base oils No. 3, No. 4, and No. 6 with gradually increasing viscosity index, successively decreasing evaporation loss, and successively decreasing pour point can be obtained at the same time.

[0038] Specifically, the detection device includes: a sampling and collecting component, which is connected to the temporary storage tank group 2 to collect the lubricating base oil product in the temporary storage tank group 2. In this way, the lubricating base oil product can be temporarily stored in the sampling and collecting component to improve the reliability of the detection of the detection device.

[0039] In the present application, the heating device 5 includes a heater 51 and a jacket 50. The jacket 50 is sleeved on the bottom of the distillation tower 1. The heater 51 is connected to the jacket 50. Through the above arrangement, the distillation tower 1 can be evenly heated.

[0040] Specifically, the jacket 50 is arranged outside the bottom of the distillation tower 1, and the jacket 50 and the outer wall of the distillation tower form a closed heating chamber. The inlet of the heating chamber is connected to the outlet of the heater 51, and the outlet of the heating chamber is connected to the inlet of the heater 51. The heating chamber is used to circulate and heat the material in the distillation tower 1.

[0041] The heater 51 is connected to the detection device to control the operating state of the heater 51 according to the detection result of the detection device, so as to control the molten salt temperature of the distillation tower 1 .

[0042] Specifically, the heater 51 is a molten salt circulation heater.

[0043] In the present application, there are three distillation towers 1, and the series direction of the three distillation towers 1 is the flow direction of the lubricating oil base oil. The processing capacity of the first distillation tower 1 is 5-10L / h, the absolute operating pressure is ≤2KPa, the theoretical number of plates of the distillation tower 1 is not less than 60, and the reflux ratio can be adjusted to 1:99-99:1. There are 6 tower sections in the tower body, each tower section is 1.1m high, and there is a 5mm thick west tower ring inside. The height of the west tower ring is 1m, and the west tower ring is made of stainless steel. The outside of the tower section of the distillation tower 1 is heated by furnace tiles and can be heated to 400°C. The outer layer of the furnace tiles has an insulation layer. The connection between two adjacent tower sections is connected by a graphite wrapped sealing gasket flange, and the outside of the tower section is provided with an insulation layer.

[0044] The processing capacity of the second distillation tower 1 is 5-10L / h, the absolute operating pressure is ≤2KPa, the theoretical number of plates of the distillation tower 1 is not less than 60, the reflux ratio can be adjusted from 1:99 to 99:1, and the tower body has 4 tower sections, each tower section is 1.1m high, with a 5mm thick west tower ring inside, the height of the west tower ring is 1m, and the west tower ring is made of stainless steel. The outside of the tower section of the distillation tower 1 is heated by furnace tiles and can be heated to 400℃. The outer layer of the furnace tiles has an insulation layer. The connection between two adjacent tower sections is connected by a graphite wrapped sealing gasket flange, and the outside of the tower section is provided with an insulation layer.

[0045] The processing capacity of the third distillation tower 1 is 5-10L / h, the absolute operating pressure is ≤2KPa, the theoretical number of plates of the distillation tower 1 is not less than 60, the reflux ratio can be adjusted from 1:99 to 99:1, and the tower body has 2 tower sections, each tower section is 1.1m high, with a 5mm thick west tower ring inside, the height of the west tower ring is 1m, and the west tower ring is made of stainless steel. The outside of the tower section of the distillation tower 1 is heated by furnace tiles and can be heated to 400°C. The outer layer of the furnace tiles has an insulation layer. The connection between two adjacent tower sections is connected by a graphite wrapped sealing gasket flange, and the outside of the tower section is provided with an insulation layer.

[0046] The material of the raw material tank 3 is 316L, and the design pressure is 0.6MPa. A liquid level gauge is installed inside the raw material tank 3. The outside of the raw material tank 3 is designed with a heat transfer oil jacket with a volume of 100L. The raw material tank 3 is equipped with a venting pipeline and a nitrogen pipeline. Among them, the nitrogen pipeline is used to introduce nitrogen into the raw material tank 3 to detect the air tightness of the raw material tank 3; the nitrogen pipeline introduces nitrogen into the raw material tank 3 to purge the raw material tank 3 to clean up the impurities and aggregates in the raw material tank 3; the venting pipeline is used to evacuate the air in the raw material tank 3, so as to replace the air with nitrogen through the nitrogen pipeline and the venting pipeline. Nitrogen is an inert gas, so that the safety of the maintenance can be guaranteed when the machine is stopped for maintenance. Among them, nitrogen can also be other inert gases.

[0047] In the present application, a liquid level meter is also provided in the raw material tank 3 to detect the liquid level in the raw material tank 3 , and the operation state of the second communication driving pump is controlled according to the detection result of the liquid level meter in the raw material tank 3 .

[0048] In the embodiment of the present application, a second control valve is provided on the second connecting pipe 40 to control the opening and closing of the second connecting pipe.

[0049] In the embodiment of the present application, the material of the first temporary storage tank 21 and the material of the second temporary storage tank 22 are both 316L, the design pressure of the first temporary storage tank 21 and the design pressure of the second temporary storage tank 22 are both 0.6MPa, a magnetic telescopic liquid level gauge is installed in the tank, and a thermal oil jacket is designed on the outside with a volume of 50L. The storage tanks are equipped with vacuum, venting, receiving, and nitrogen pipelines.

[0050] In the present application, the liquid level gauge is a magnetostrictive liquid level gauge.

[0051] In the present application, the jacket 50 is arranged outside the bottom of the distillation tower 1, and the jacket 50 and the outer wall of the distillation tower 1 form a closed heating chamber. The inlet of the heating chamber is connected to the outlet of the molten salt circulation heater (heater 51), and the outlet of the heating chamber is connected to the inlet of the molten salt circulation heater. The heating chamber is used to circulate and heat the material in the distillation tower 1.

[0052] In the present application, the adjustment range of the molten salt circulation heater (heater 51) is: adjustable from the current room temperature to 480°C, the circulation tank volume of the molten salt circulation heater is 300L, the heating power of the molten salt circulation heater is 24KW, and the maximum circulation volume of the molten salt circulation heater is 3m 3 / h.

[0053] In the embodiment of the present application, when three sets of distillation towers are used in series, the raw material is hydrofining tail oil, the component of the hydrofining tail oil is greater than 380°C, the tower pressure of the first distillation tower 1 is 1.5KPa, the tower top temperature of the first distillation tower 1 is 250°C, the tower bottom temperature of the first distillation tower 1 is 325°C, the reflux ratio of the first distillation tower 1 is 30, the tower pressure of the second distillation tower 1 is 1.0KPa, the tower top temperature of the second distillation tower 1 is 260°C, and the second distillation tower 1 is 200°C. The bottom temperature of distillation tower 1 is 340°C, the reflux ratio of the second distillation tower 1 is 30, the tower pressure of the third distillation tower 1 is 0.7 KPa, the top temperature of the third distillation tower 1 is 270°C, the bottom temperature of the third distillation tower 1 is 360°C, the reflux ratio of the third distillation tower 1 is 30, 3 cSt base oil is obtained from the first first temporary storage tank 21, 4 cSt base oil is obtained from the second first temporary storage tank 21, and 6 cSt base oil is obtained from the third first temporary storage tank 21.

[0054] Specifically, in the 3 cSt base oil: the kinematic viscosity at a temperature of 100°C ranges from 2.9682 to 3.0247, the kinematic viscosity at a temperature of 40°C ranges from 10.601 to 10.875, the kinematic viscosity index ranges from 140.2 to 141.3, the pour point ranges from -51 to -48, and the Noack evaporation loss ranges from 6.5 to 7.4 wt%.

[0055] Specifically, in the 4 cSt base oil: the kinematic viscosity at a temperature of 100°C ranges from 3.9959 to 4.1179, the kinematic viscosity at a temperature of 40°C ranges from 16.705 to 19.945, the kinematic viscosity index ranges from 141.4 to 151.1, the pour point ranges from -42 to -39, and the Noack evaporation loss ranges from 5.9 to 6.7 wt%.

[0056] Specifically, in the 6 cSt base oil, the kinematic viscosity at a temperature of 100°C ranges from 5.97 to 6.1, the kinematic viscosity at a temperature of 40°C ranges from 29.05 to 29.8, the kinematic viscosity index ranges from 157.2 to 160.4, the pour point ranges from -30 to -27, and the Noack evaporation loss ranges from 5.8 to 6.3 wt%.

[0057] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0058] The utility model provides a lubricating base oil production system, comprising: a distillation tower 1, used for distilling the raw materials to be processed; a temporary storage tank group 2, the temporary storage tank group 2 is connected to the distillation tower 1, so that the lubricating base oil product produced after the distillation tower is divided flows into the temporary storage tank group 2; a detection device, the detection device is connected to the temporary storage tank group 2, so as to detect the distillation range, kinematic viscosity, and pour point of the lubricating base oil product in the temporary storage tank group 2; a reflux component, each reflux component includes a reflux pipe and a reflux drive pump, one end of the reflux pipe is connected to the distillation tower 1, the other end of the reflux pipe is connected to the temporary storage tank group, the reflux drive pump is arranged on the reflux pipe, and the reflux drive pump is connected to the detection device, so as to control the reflux drive pump to drive the lubricating base oil product in the temporary storage tank group 2 to return to the distillation tower 1 through the reflux pipe for division according to the detection result of the detection device. Through the above arrangement, the lubricating base oil product can be controlled to be repeatedly cut through the distillation tower 1 according to the actual distillation range, kinematic viscosity, and pour point of the lubricating base oil product, thereby improving the production cutting accuracy of the lubricating base oil. Furthermore, the present application may be provided with a plurality of distillation towers. Optionally, the plurality of distillation towers 1 may be used separately, or the plurality of distillation towers may be connected in series in sequence to achieve continuous cutting of the prepared raw materials to obtain a plurality of different grades of lubricating oil base oils.

[0059] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lubricating oil base oil production system, characterized in that: include: A distillation tower (1) is used to perform distillation treatment on the raw material to be processed; A temporary storage tank group (2), the temporary storage tank group (2) is connected to the distillation tower (1), so that the lubricating oil base oil product produced after being divided by the distillation tower flows into the temporary storage tank group (2); A detection device, the detection device is connected to the temporary storage tank group (2) to detect the distillation range, kinematic viscosity and pour point of the lubricating oil base oil product in the temporary storage tank group (2); A reflux assembly, each of which comprises a reflux pipe and a reflux drive pump, one end of the reflux pipe being connected to the distillation tower (1), and the other end of the reflux pipe being connected to the temporary storage tank group (2), the reflux drive pump being arranged on the reflux pipe, and the reflux drive pump being connected to the detection device, so as to control the reflux drive pump to drive the lubricating oil base oil product in the temporary storage tank group (2) to return to the distillation tower (1) through the reflux pipe for segmentation according to the detection result of the detection device.

2. The lubricating oil base oil production system according to claim 1, characterized in that: The lubricating oil base oil production system also includes: A liquid level meter is installed in the temporary storage tank group (2) to detect the liquid level of the lubricating oil base oil product in the temporary storage tank group (2).

3. The lubricating oil base oil production system according to claim 2, characterized in that: The lubricating oil base oil production system also includes: The first connecting component comprises a first connecting pipe and a first connecting drive pump, wherein the first connecting drive pump is arranged on the first connecting pipe, and the two ends of the first connecting pipe are respectively connected to the temporary storage tank group (2) and the detection device, and the first connecting drive pump is connected to the liquid level meter to control the start and stop of the first connecting drive pump according to the detection result of the liquid level meter.

4. The lubricating oil base oil production system according to claim 2, characterized in that: The temporary storage tank group (2) comprises a first temporary storage tank (21) and a second temporary storage tank (22), wherein the first temporary storage tank (21) is connected to the top of the distillation tower (1) to obtain the first lubricating base oil product after being split by the distillation tower (1), and the second temporary storage tank (22) is connected to the bottom of the distillation tower (1) to obtain the second lubricating base oil product after being split by the distillation tower (1); The reflux component is provided between the first temporary storage tank (21) and the distillation tower (1), and between the second temporary storage tank (22) and the distillation tower (1); the first connecting component is provided between the first temporary storage tank (21) and the detection device, and between the second temporary storage tank (22) and the detection device; There are multiple liquid level gauges, and at least one of the liquid level gauges is disposed in each of the first temporary storage tank (21) and the second temporary storage tank (22).

5. The lubricating oil base oil production system according to claim 2, characterized in that: The lubricating oil base oil production system comprises: A raw material tank (3), used for storing the raw materials for preparation; A second connecting component (4), comprising a second connecting pipe (40) and a second connecting drive pump, wherein the second connecting drive pump is arranged on the second connecting pipe (40), and both ends of the second connecting pipe are respectively connected to the raw material tank (3) and the distillation tower (1); Wherein, the second communication driving pump is connected to the liquid level meter to control the start and stop of the second communication driving pump according to the detection result of the liquid level meter.

6. The lubricating base oil production system according to claim 1, characterized in that: There are multiple distillation towers (1), multiple temporary storage tank groups (2), and multiple reflux assemblies. Multiple distillation towers (1) and multiple temporary storage tank groups (2) are arranged in a one-to-one correspondence. Multiple temporary storage tank groups (2) and multiple reflux assemblies are connected in a one-to-one correspondence. Multiple reflux assemblies are connected in a one-to-one correspondence with multiple distillation towers (1). Multiple temporary storage tank groups (2) are all connected to the detection device. The plurality of distillation towers (1) have different numbers of tower sections, and the prepared raw materials can be selectively introduced into one of the plurality of distillation towers (1).

7. The lubricating oil base oil production system according to claim 6, characterized in that: One distillation tower (1) and one temporary storage tank group (2) form a group of split components, and a plurality of the split components are sequentially connected in series; each of the temporary storage tank groups (2) comprises: a first temporary storage tank (21) and a second temporary storage tank (22), wherein the first temporary storage tank (21) is connected to the top of the distillation tower (1) to obtain the first lubricating base oil product after being split by the distillation tower (1), and the second temporary storage tank (22) is connected to the bottom of the distillation tower (1) to obtain the second lubricating base oil product after being split by the distillation tower (1); Wherein, the second temporary storage tank (22) of the previous segmentation component is connected to the distillation tower (1) of the next segmentation component.

8. The lubricating oil base oil production system according to claim 7, characterized in that: The detection device comprises: A first detection unit, the first detection unit is connected to the first temporary storage tank (21) of the plurality of split assemblies to detect the distillation range, kinematic viscosity and pour point of the first lubricating oil base oil product; A second detection unit is connected to the second temporary storage tank (22) of the plurality of split assemblies to detect the distillation range, kinematic viscosity and pour point of the second lubricant base oil product.

9. The lubricating oil base oil production system according to claim 7, characterized in that: Along the series connection direction of the plurality of splitting components, the number of tower sections of the plurality of distillation towers (1) gradually decreases.

10. The lubricating base oil production system according to any one of claims 1 to 9, characterized in that: The detection device comprises: A sampling and collecting component is connected to the temporary storage tank group (2) to collect the lubricating oil base oil product in the temporary storage tank group (2).

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