Tower bottom oil filtering device for isodewaxing heavy vacuum tower

Abstract

The utility model discloses a tower bottom oil filtering device for an isomerization dewaxing heavy vacuum tower, and relates to the technical field of tower bottom oil filtering appliances, the tower bottom oil filtering device comprises a raw material tank, three filtering mechanisms and a product tank, the side end of the raw material tank is communicated with the three filtering mechanisms through pipelines, and the other sides of the three filtering mechanisms are communicated with the product tank through pipelines; each filtering mechanism is composed of a backflow filtering tank and a blade type filtering tank, and a communicating pipeline is arranged between the backflow filtering tank and the blade type filtering tank. According to the utility model, the raw material tank, the three filtering mechanisms and the product tank are arranged, so that the tanks can be better connected through the pipelines, and the material circulation of the tanks is facilitated; therefore, the problem that the operation is inconvenient when the filter cartridge and the filter element need to be disassembled when the existing filter element is cleaned is solved through the backflow refiltration of the valve on the pipeline and the pump body control device.

Description

Technical Field

[0001] This utility model relates to the technical field of bottom oil filtration equipment, and in particular to a bottom oil filtration device for a heterogeneous dewaxing heavy vacuum tower. Background Technology

[0002] With increasing environmental awareness and increasingly stringent environmental regulations, the environmental protection requirements for the oil refining process are also rising. Oil refining companies need to adopt a series of environmental protection measures to reduce pollutant emissions, such as desulfurization and denitrification treatment of bottom oil to meet environmental requirements. With global economic development and accelerated industrialization, the demand for petroleum products is constantly increasing, and bottom oil, as one of the important products of oil refining, is also experiencing continuous market demand growth.

[0003] Existing filter elements are mostly installed horizontally inside the filter cylinder. After use, filter residue accumulates on top of the filter element, easily causing clogging. Furthermore, existing filter elements are often fixed in the filter tank using a combination of flanges and bolts, requiring disassembly of the filter cylinder and filter element for cleaning. The flange and bolt assembly and disassembly process is complex and time-consuming. Therefore, this application designs a bottom oil filtration device for heterogeneous dewaxing and heavy vacuum distillation towers to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bottom oil filtration device for heterogeneous dewaxing heavy vacuum towers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a bottom oil filtration device for a heterogeneous dewaxing heavy vacuum tower, comprising a raw material tank, three filtration mechanisms and a product tank, wherein the side end of the raw material tank is connected to the three filtration mechanisms via a pipe, and the other side of the three filtration mechanisms is connected to the product tank via a pipe, wherein the filtration mechanism consists of a reflux filter tank and a blade filter tank, and a connecting pipe is provided between the reflux filter tank and the blade filter tank.

[0006] Preferably, the upper part of the blade-type filter tank is provided with a flange-connected top cover, and the top cover is provided with a pressure regulating device.

[0007] Preferably, the upper cover is connected to a hot purge pipe, the upper side of the blade filter tank is provided with a feed pipe, and the lower side of the blade filter tank is provided with a liquid outlet pipe.

[0008] Preferably, the blade-type filter canister is provided with a filter element baffle frame, and the bottom side of the blade-type filter canister is provided with a slag discharge channel. A slag discharge box is slidably installed in the slag discharge channel, and the slag discharge box is connected to the bottom inner side of the filter element baffle frame.

[0009] Preferably, a pressure gauge is installed on the side wall of the blade-type filter canister, and a support base is provided at the lower end of the blade-type filter canister.

[0010] Preferably, a rotary motor is installed at the bottom of the upper cover, and a blade shaft is coaxially fixed to the motor shaft at the lower end of the rotary motor. Multiple centrifugal blades are equidistantly fixed to the bottom of the blade shaft.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the installation and cooperation of the slag discharge channel and the slag unloading box facilitates the collection of filter impurities, further improving the portability of filter impurity discharge, thereby enabling the function of rapid discharge of filter impurities. Furthermore, the setting of the hot purge pipe and the filter element baffle facilitates the purge of the filter element baffle during impurity removal, thereby enabling the function of cleaning the filter element baffle by purge, and ultimately solving the problem of inconvenient operation when the filter element needs to be disassembled for cleaning. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model;

[0014] Figure 2 This is a three-dimensional structural diagram of the blade-type filter tank proposed in this utility model;

[0015] Figure 3 This is a three-dimensional structural diagram of the filter element baffle frame proposed in this utility model;

[0016] Figure 4 This is a three-dimensional structural diagram of the blade shaft proposed in this utility model.

[0017] The numbers in the diagram are: 1. Raw material tank; 2. Reflux filter tank; 3. Leaf filter tank; 4. Product tank; 5. Pressure regulating device; 6. Top cover; 7. Hot purge pipe; 8. Feed pipe; 9. Pressure gauge; 10. Slag discharge channel; 11. Liquid outlet pipe; 12. Leaf shaft; 13. Filter element baffle; 14. Slag discharge box; 15. Centrifugal blades. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example: See Figure 1-4 This utility model discloses a bottom oil filtration device for a heterogeneous dewaxing heavy vacuum tower, comprising a raw material tank 1, three filtration mechanisms, and a product tank 4. The raw material tank 1 is connected to the three filtration mechanisms via pipes on one side, and the product tank 4 is connected to the other side of each filtration mechanism via pipes. Each filtration mechanism consists of a reflux filter tank 2 and a vane filter tank 3. A connecting pipe is provided between the reflux filter tank 2 and the vane filter tank 3. The arrangement of the raw material tank 1, the three filtration mechanisms, and the product tank 4 allows for better pipe connection between the tanks, facilitating material circulation within each tank. The reflux is then controlled by valves and a pump on the pipes for re-filtration. The vane filter tank 3... The upper part of the filter tank is equipped with a flange-connected top cover 6, and a pressure regulating device 5 is installed on the top cover 6. The pressure regulating device 5 is a pressure regulating valve. Through the setting of the pressure regulating device 5, the inlet pressure can be stabilized at the set value during the operation of the filter tank, ensuring that the filtration process is carried out under stable pressure conditions, which is beneficial to improving filtration efficiency and quality. By regulating the pressure, the filter tank is prevented from being damaged due to excessively high or low pressure. At the same time, it can also protect other equipment connected to the filter tank, such as pumps and pipelines, and extend the service life of the equipment. A hot purge pipe 7 is connected to the top of the top cover 6. A feed pipe 8 is provided on the upper side of the blade filter tank 3. A liquid outlet pipe 11 is provided at the lower end. Hot purging nitrogen gas connected through the hot purging pipe 7 can purge the inside of the blade filter canister 3, thereby removing the deposits on the filter element frame 13 more quickly and preventing the deposits from clogging the filter element frame 13. The blade filter canister 3 is equipped with a filter element frame 13. A slag discharge channel 10 is provided at the bottom of the side end of the blade filter canister 3. A slag discharge box 14 is slidably installed in the slag discharge channel 10. The slag discharge box 14 is connected to the inner bottom end of the filter element frame 13. Through the arrangement of the slag discharge channel 10 and the slag discharge box 14, the filter impurities at the inner bottom of the filter element frame 13 can be better transferred and discharged from the blade filter canister 3. A pressure gauge 9 is installed on the side wall of the vane filter tank 3. A support base is provided at the lower end of the vane filter tank 3. The setting of the pressure gauge 9 makes it easier for the staff to observe the filtration pressure in the vane filter tank 3 and make manual adjustments to the pressure regulating device 5. A rotary motor is installed at the bottom of the top cover 6. A vane shaft 12 is coaxially fixed to the motor shaft at the lower end of the rotary motor. Multiple centrifugal blades 15 are fixed at equal intervals at the bottom of the vane shaft 12. Through the setting of the vane shaft 12 and the centrifugal blades 15, the oil in the vane filter tank 3 can be better centrifuged and stirred, so that the oil can be filtered and separated through the filter element baffle 13, thereby removing impurities in the oil.

[0020] Working Principle: In the use of this utility model, the raw material tank 1, reflux filter tank 2, vane filter tank 3, and product tank 4 are first connected through components such as a nitrogen heater and pipeline valves. Then, the oil to be filtered is input into the raw material tank 1. Subsequently, the oil flows through a pipeline into the reflux filter tank 2 for filtration. The initially filtered oil then enters the vane filter tank 3. The initially filtered oil is then separated by the action of the vane shaft 12 and centrifugal blades 15, causing the oil to pass through the filter element frame 13 for filtration and separation, thereby removing impurities from the oil. The hot purging nitrogen gas connected to the purge pipe 7 can purge the inside of the blade filter tank 3, thereby removing the deposits on the filter element frame 13 more quickly and preventing the deposits from clogging the filter element frame 13. Finally, the oil settles and enters the product tank 4 through the liquid outlet pipe 11. The slag discharge channel 10 and the slag discharge box 14 can better transfer the filtered impurities at the bottom of the inner side of the filter element frame 13 out of the blade filter tank 3. By installing a reflux device between each tank, the detection and circulation filtration can be realized. The use process of the device ends here.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for filtering the bottom oil of a heterogeneous dewaxing heavy vacuum column, comprising a raw material tank (1), three filtering mechanisms and a product tank (4), characterized in that: The side end of the raw material tank (1) is connected to three filtration mechanisms via pipes, and the other side of the three filtration mechanisms is connected to a product tank (4) via pipes. The filtration mechanism consists of a reflux filtration tank (2) and a blade-type filtration tank (3), and a connecting pipe is provided between the reflux filtration tank (2) and the blade-type filtration tank (3).

2. The bottom oil filtration device for a heterogeneous dewaxing heavy vacuum tower according to claim 1, characterized in that: The upper part of the blade filter tank (3) is provided with a flange-connected upper cover (6), and the upper cover (6) is provided with a pressure regulating device (5).

3. The bottom oil filtration device for a heterogeneous dewaxing heavy vacuum tower according to claim 2, characterized in that: The upper cover (6) is connected to a hot purge pipe (7), the upper side of the blade filter tank (3) is provided with a feed pipe (8), and the lower side of the blade filter tank (3) is provided with a liquid outlet pipe (11).

4. A device for filtering the bottom oil of a heavy vacuum tower according to claim 3, characterized in that: The blade-type filter tank (3) is provided with a filter element baffle (13). The bottom side of the blade-type filter tank (3) is provided with a slag discharge channel (10). A slag discharge box (14) is slidably installed in the slag discharge channel (10). The slag discharge box (14) is connected to the bottom inner side of the filter element baffle (13).

5. A device for filtering the bottom oil of a heavy vacuum tower according to claim 4, characterized in that: A pressure gauge (9) is installed on the side wall of the blade-type filter tank (3), and a support base is provided at the lower end of the blade-type filter tank (3).

6. A device for filtering the bottom oil of a heavy vacuum tower according to claim 5, characterized in that: A rotary motor is installed at the bottom of the upper cover (6), and a blade shaft (12) is coaxially fixed to the motor shaft at the lower end of the rotary motor. Multiple centrifugal blades (15) are fixed at equal intervals at the bottom of the blade shaft (12).

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