Filter suitable for heavy oil slurry reactor hydrogenation deconstruction process

Abstract

The utility model discloses a filter applicable to a heavy oil slurry reactor hydrogenation deconstruction process, which belongs to the technical field of heavy oil treatment and is characterized in that a shell, an upper shell cover and a lower shell cover form a structure with the top and the bottom both capable of being opened, and a liquid inlet and a filter component are arranged at the positions, close to an upper end opening, of the shell. Preferably, the filtering assembly is of a plate type structure and located above the liquid inlet, meanwhile, the liquid outlet is formed in the upper shell cover, the portion above the filtering assembly is a liquid outlet cavity, the portion below the filtering assembly is a liquid inlet cavity, during cleaning, only the corresponding shell cover needs to be opened to take out condensed materials in the corresponding cavity, the filtering assembly does not need to be taken out, the working efficiency is improved, and the cleaning difficulty is reduced; according to the filter, the liquid inlet is formed below the filtering assembly, the size of the liquid inlet cavity can be enlarged, liquid in the liquid inlet cavity can be driven to flow through the flow speed of the inlet liquid, it is ensured that the fluid is more evenly distributed in the liquid inlet cavity, and the filtering effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heavy oil processing, and in particular relates to a filter suitable for a heavy oil slurry bed hydrogenation deconstruction process. Background Art

[0002] During the operation of the heavy oil slurry bed hydrodeconstruction process, filters are required to be used for filtering treatment in multiple key links. At present, the commonly used filter types mainly include basket filters and bag filters. These two filters have their own characteristics and applicable scenarios in heavy oil filtration, but both require the filter bags and filter baskets as filter elements to be removed from the filter cavity for cleaning and maintenance. In addition, they are limited by the installation position of the filter elements and the volume and structure of the filter cavity. On the one hand, there is the disadvantage of inconvenient disassembly of the filter unit. On the other hand, there are also the disadvantages of short service life and frequent switching. If the filter is not switched in time, it is easy to cause pipeline blockage and cause the risk of shutdown.

[0003] Based on the above analysis, this application designs a new filter suitable for heavy oil slurry bed hydrodeconstruction process. Utility Model Content

[0004] The purpose of the utility model is to provide a filter suitable for a heavy oil slurry bed hydrodeconstruction process, aiming to solve at least one of the shortcomings mentioned in the above background technology.

[0005] In order to solve the above problems, the present scheme provides a filter suitable for the heavy oil slurry bed hydrodeconstruction process: it comprises an outer shell, an upper shell cover and a lower shell cover, the outer shell is a cylindrical structure with two ends open, the outer shell is provided with a liquid inlet and a filter assembly near the upper open end, and the filter assembly is located above the liquid inlet; the upper shell cover and the lower shell cover are respectively adapted to the upper and lower open ends of the outer shell, and a liquid outlet and an exhaust port are provided on the upper shell cover.

[0006] As a preferred solution of the present application: the size of the filter assembly is larger than the inner diameter of the cross-section of the inner cavity of the shell and smaller than the outer diameter of the cross-section of the inner cavity of the shell. At the same time, at least one of the docking surface of the open mouth at the upper end of the shell and the docking surface of the upper shell cover is provided with a limiting groove, and the filter assembly can be embedded in the limiting groove and fixed at the position of the open mouth at the upper end of the shell by docking and clamping the shell and the upper shell cover.

[0007] As a preferred solution of the present application: the filter assembly is a plate-like structure, and the filter assembly includes a frame and a filter screen, and the filter screen is detachably mounted on the frame.

[0008] As a preferred solution of the present application: the skeleton includes an annular outer ring and reinforcing ribs, the inner side of the annular outer ring is provided with a convex edge extending radially, the convex edge and at least one of the inner wall of the annular outer ring near the upper end and the inner wall near the lower end form a groove, and the filter can be installed in the groove; the reinforcing rib is horizontally arranged in the annular outer ring and its two ends are respectively connected to the convex edge.

[0009] As a preferred solution of the present application: the filter screen includes multiple models, and each model corresponds to a mesh size.

[0010] As a preferred solution of the present application: the liquid inlet is connected to the shell in a manner of being inclined at 40-55 degrees.

[0011] As a preferred solution of the present application: the upper shell cover and the lower shell cover are respectively connected to the upper and lower open ends of the outer shell through flange interfaces, and the flange interfaces are integrally formed with the connecting surfaces of the upper shell cover, the lower shell cover and the outer shell.

[0012] As a preferred solution of the present application: at least the upper shell cover is a cover shell structure, that is, the upper shell cover includes a shell cavity, and the upper shell cover is connected to the open mouth at the upper end of the outer shell to form a liquid outlet cavity with the filter assembly as the dividing line.

[0013] As a preferred solution of the present application: the shell cavity depth of the upper shell cover is smaller than the shell cavity depth of the outer shell.

[0014] Compared with the prior art, the advantages of this application are:

[0015] The filter of the present application is composed of an outer shell, an upper shell cover and a lower shell cover to form a structure that can be opened at the top and the bottom, and the liquid inlet and the filter component are arranged at a position close to the upper open port of the outer shell. The filter component is preferably a plate structure and is located above the liquid inlet. At the same time, the liquid outlet is arranged on the upper shell cover, so that the upper shell cover area above the filter component forms a liquid outlet cavity, and the outer shell area below the filter component forms a liquid inlet cavity with the filter component as a dividing line. Since a structure that can be opened at the top and the bottom is adopted, when cleaning, it is only necessary to open the corresponding shell cover to take out the condensed material inside the corresponding cavity. Compared with the existing basket filters and bag filters, there is no need to take out the filter component The condensed material in the filter can be removed, which improves work efficiency and reduces the difficulty of cleaning. In addition, the filter sets the liquid inlet below the filter assembly, which not only expands the volume of the liquid inlet cavity, but also uses the liquid inlet flow rate to drive the flow of liquid in the liquid inlet cavity, ensuring that the fluid is more evenly distributed in the liquid inlet cavity, thereby improving the filtering effect. It can be seen that the filter of the present application is not only easy to clean and maintain, but also has a good filtering effect. At the same time, the larger liquid inlet cavity increases the service life of the filter, solving the problem that the existing filter is limited by the installation position of the filter element and the volume and structure of the filter cavity, resulting in inconvenience in cleaning and maintenance of the filter and a short service life requiring frequent switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the filter structure provided by the utility model;

[0017] Figure 2 This is a schematic diagram of the installation and decomposition state of the filter assembly provided by the utility model;

[0018] Figure 3 The utility model provides Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0019] Figure 4 This is a schematic diagram of the main structure of the annular outer ring in the filter assembly provided by the utility model;

[0020] Figure 5 It is a schematic diagram of the main structure of the filter assembly provided by the utility model.

[0021] Reference numerals

[0022] 10 is the outer shell; 101 is the liquid inlet; 20 is the upper shell cover; 201 is the liquid outlet; 202 is the exhaust port; 30 is the lower shell cover; 40 is the filter assembly; 401 is the skeleton; 4011 is the annular outer ring; 4012 is the reinforcing rib; 4013 is the slot; 402 is the filter screen; 50 is the limit slot; 60 is the flange interface. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below in conjunction with specific implementations and with reference to the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope of the present invention and its application.

[0024] This embodiment provides a filter suitable for heavy oil slurry bed hydrodeconstruction process, such as Figure 1 As shown, the filter comprises a shell 10, an upper shell cover 20 and a lower shell cover 30, wherein the shell 10 is a cylindrical structure with two ends open, and a liquid inlet 101 and a filter assembly 40 are provided near the upper end opening of the shell 10, and the filter assembly 40 is located above the liquid inlet 101. In this embodiment, the filter assembly 40 is preferably a plate-shaped structure, and of course, it can also be a bucket-shaped structure with limited depth when necessary; the upper shell cover 20 and the lower shell cover 30 are respectively adapted to the upper and lower openings of the shell 10, that is, the upper shell cover The upper shell cover 20 and the lower shell cover 30 can cover the upper and lower ports of the outer shell 10 to seal the outer shell 10, and a liquid outlet 201 and an exhaust port 202 are provided on the upper shell cover 20. In this embodiment, the upper shell cover 20, the lower shell cover 30 and the outer shell 10 can be tightly docked and locked using traditional flanges, threads, clamps, buckles and other connecting structures. In this embodiment, the flange interface 60 is preferably used for tight docking. The flange interface 60 is preferably integrally formed with the docking surfaces of the upper shell cover 20, the lower shell cover 30 and the outer shell 10.

[0025] Specifically, the filter of the present embodiment is composed of an outer shell 10, an upper shell cover 20 and a lower shell cover 30 to form a structure that can be opened at the top and the bottom, and the liquid inlet 101 and the filter component 40 are arranged at a position close to the upper end opening of the outer shell 10, and the filter component 40 is located above the liquid inlet 101. At the same time, the liquid outlet 201 is arranged on the upper shell cover 20, so that the filter component 40 is used as a dividing line, and the upper shell cover 20 area above the dividing line forms a liquid outlet cavity, and the outer shell 10 area below the dividing line forms a liquid inlet cavity. Since a structure that can be opened at the top and the bottom is adopted, when cleaning, it is only necessary to open the corresponding shell cover to remove the condensed material inside the filter. Compared with the existing basket filter and bag filter, the condensed material in the filter can be removed without removing the filter component 40, thereby improving work efficiency and reducing cleaning difficulty. In addition, the filter of the present embodiment arranges the liquid inlet 101 below the filter component 40, which not only expands the volume of the liquid inlet cavity, but also uses the liquid inlet flow rate to drive the liquid flow in the liquid inlet cavity, ensuring that the material in the liquid inlet cavity remains in a dynamic state, thereby improving the filtering effect.

[0026] It can be seen that the filter of this embodiment is not only easy to clean and maintain, but also has a good filtering effect. At the same time, the larger liquid inlet chamber increases the service life of the filter, solving the shortcomings of the existing filter that is limited by the installation position of the filter element and the volume and structure of the filter cavity, resulting in inconvenient filter cleaning and maintenance and a short service life requiring frequent switching.

[0027] like Figure 2 As shown, it is a schematic diagram of the installation and disassembly state of the filter assembly 40 provided in this embodiment. The size of the filter assembly 40 is larger than the inner diameter of the cross-section of the inner cavity of the shell 10 and smaller than the outer diameter of the cross-section of the inner cavity of the shell 10, that is, the size of the filter assembly 40 is slightly larger than the cross-section of the inner cavity of the shell 10, and the filter assembly 40 is a circular plate structure corresponding to the shape of the cross-section of the inner cavity of the shell 10. At the same time, at least one of the docking surface of the open mouth at the upper end of the shell 10 and the docking surface of the upper shell cover 20 is provided with a limiting groove 50, and the filter assembly 40 can be embedded in the limiting groove 50 and fixed at the position of the open mouth at the upper end of the shell 10 by docking and clamping the shell 10 and the upper shell cover 20.

[0028] In the present embodiment, preferably, limiting grooves 50 are respectively provided on the docking surfaces of the upper open mouth of the outer shell 10 and the docking surfaces of the upper shell cover 20, and the filter assembly 40 is limited and supported by the limiting grooves 50, and after the upper shell cover 20 and the upper open mouth of the outer shell 10 are docked, the depths of the limiting grooves 50 on the two docking surfaces are just slightly less than or equal to the thickness of the filter assembly 40, so that on the one hand, the filter assembly 40 can be stably fixed, and on the other hand, the sealing of the connection between the upper shell cover 20 and the outer shell 10 can be ensured; it can be seen that in the present embodiment, limiting grooves 50 are respectively provided on the docking surfaces of the upper shell cover 20 and the outer shell 10 to achieve detachable installation of the filter assembly 40 at the upper open mouth of the outer shell 10, which not only improves the convenience of disassembly and assembly of the filter assembly 40, but also increases the volume of the liquid inlet cavity, thereby extending the service life of the filter.

[0029] like Figure 4-5 401, and the filter assembly 402 is a schematic diagram of the structure of the filter assembly 40 provided in the present embodiment. The filter assembly 40 is a circular plate structure corresponding to the cross-sectional structure of the cylindrical housing 10, and is horizontally arranged at the upper open end of the housing 10. The filter assembly 40 comprises a frame 401 and a filter screen 402, and the filter screen 402 is detachably mounted on the frame 401. That is, the filter assembly 40 in the present embodiment is composed of a frame 401 and a filter screen 402, and the filter screen 402 is detachable relative to the frame 401. The advantage of this design is that only the filter screen 402 with different mesh sizes can be replaced according to the filtering needs, without the need to disassemble the filter assembly 401. The skeleton 401 is removed to improve the versatility and service life of the filter; in the present embodiment, the filter screen 402 preferably includes a plurality of models, each model corresponds to a mesh number, for example, model A is set as a coarse filtration filter screen 402, the mesh number of the filter screen 402 is set to 20-40 meshes, model B is a medium filtration filter screen 402, the mesh number of the filter screen 402 is set to 40-80 meshes, model C is a fine filtration filter screen 402, the mesh number of the filter screen 402 is set to 80-100 meshes, so that it is convenient to select the required model of the filter screen 402 for use according to the requirements of the filtration stage and accuracy.

[0030] In this embodiment, the fixing method between the filter 402 and the skeleton 401 can be achieved by means of the limiting grooves 50 provided on the outer shell 10 and the upper shell cover 20, that is, during installation, the filter 402 and the skeleton 401 are both embedded in the limiting grooves 50 and clamped and fixed by the limiting grooves 50 on the outer shell 10 and the upper shell cover 20; or, the filter 402 is fixed to the skeleton 401 by means of traditional binding or screwing.

[0031] according to Figure 4 It can be seen that the skeleton 401 includes an annular outer ring 4011 and a reinforcing rib 4012. A convex edge extends radially on the inner side of the annular outer ring 4011. It can be understood that the height of the convex edge is based on the ability to support the filter screen 402 without affecting normal filtration. The convex edge and at least one of the inner wall near the upper end and the inner wall near the lower end of the annular outer ring 4011 form a groove 4013. In this embodiment, the convex edge and the inner wall near the upper end and the inner wall near the lower end of the annular outer ring 4011 respectively form a groove 4013, see Figure 3 As shown, the filter 402 can be installed in at least one slot 4013. According to the filtering requirements, two filters 402 of the same type or two filters 402 of different types can be selected and installed in the slots 4013 at the upper and lower positions respectively for combined use; the reinforcing rib 4012 is horizontally arranged in the annular outer ring 4011 and its two ends are respectively connected to the convex edges. The reinforcing rib 4012 is used to increase the strength of the skeleton 401 while supporting the middle position of the filter 402 to ensure the stability of the installation of the filter 402.

[0032] As a preferred embodiment of the present application, the liquid inlet 101 is connected to the outer shell 10 in an inclined manner of 40-55°, and is preferably installed at an inclined angle of 45°, and the inside of the liquid inlet 101 connected to the outer shell 10 is polished to form a smooth fillet; it should be noted that in the heavy oil slurry bed hydrodeconstruction process, the asphaltene and colloid content in the hydrodeconstruction circulating oil is as high as about 25%, and the freezing point is greater than 50°C. Therefore, when the temperature is low, the circulating oil is prone to condensation, affecting the filtering effect. The present embodiment uses an inclined manner of 45° to allow the hot circulating oil (material) to enter the liquid inlet cavity. On the one hand, it can flush the material in the liquid inlet cavity. This flushing effect can form a stirring effect in the liquid inlet cavity, which can effectively prevent the material from sticking; on the other hand, it can ensure that the hot circulating oil from the liquid inlet 101 is evenly distributed in the liquid inlet cavity, so as to enhance the uniformity of the temperature in the liquid inlet cavity and avoid condensation caused by local low temperature.

[0033] As a preferred embodiment of the present application, at least the upper shell cover 20 is a cover shell structure, that is, the upper shell cover 20 includes a shell cavity. In this embodiment, the upper shell cover 20 is preferably a cover shell structure, and the lower shell cover 30 is a plate-like structure. The upper shell cover 20 is connected to the open mouth at the upper end of the outer shell 10 to form a liquid outlet cavity with the filter assembly 40 as the dividing line. The upper shell cover 20 with this structure can increase the volume of the liquid outlet cavity.

[0034] The shell cavity depth of the upper shell cover 20 is smaller than the shell cavity depth of the outer shell 10, ensuring that the volume of the liquid inlet cavity is larger than the volume of the liquid outlet cavity, meeting actual needs and improving the service life.

[0035] In this implementation, the filter is actually used as Figure 1 The liquid inlet 101 is placed in the state shown, that is, it is placed in a vertical state, and it is used between the high-pressure zone and the low-pressure zone of the slurry bed hydrodeconstruction process; when it is used in the link from high pressure to low pressure, the liquid inlet 101 is located in the high-pressure zone, and the specific pressure at the liquid inlet end can be about 3 MPa, and the liquid outlet 201 is located in the low-pressure zone, and the specific pressure at the liquid outlet end can be about 0.5 MPa. At this time, a pressure difference is formed between the liquid inlet 101 and the liquid outlet 201, which ensures that the liquid inlet 101 located at a lower position can be normally filled with liquid, thereby ensuring Normal use of the filter; when it is used in the link from low pressure to high pressure, the liquid inlet 101 is located in the low pressure area, and the liquid outlet 201 is located in the high pressure area. At the same time, a hydrogenation pump is connected to the liquid outlet 201 end, and the hydrogenation pump extracts the filtered circulating oil by suction. That is, by connecting the hydrogenation pump to the liquid outlet 201 end, the pressure distribution between the liquid inlet 101 and the liquid outlet 201 is changed, ensuring the normal liquid inlet 101 located at a lower position, thereby ensuring the normal use of the filter.

[0036] During the filtering process, the hot circulating oil is slowly injected into the liquid inlet cavity from the liquid inlet 101. When the circulating oil level rises to exceed the filter assembly 40, the filter assembly 40 filters the circulating oil, and the sediment (or condensed material) will sink to the bottom of the liquid inlet cavity. The filtered circulating oil will enter the liquid outlet cavity. When the liquid level reaches or exceeds the liquid outlet 201, the filtered circulating oil will be actively discharged from the liquid outlet 201 or sucked out by the hydrogenation pump, and circulated in sequence; it should be noted that, under normal circumstances, the filter is continuously used in the corresponding process link, and is only cleaned when the sediment inside the liquid inlet cavity reaches a certain amount; when cleaning, the upper shell cover 20 and the lower shell cover 30 are opened at the same time, so that not only the liquid inlet cavity and the liquid outlet cavity are leaked to facilitate the removal of the internal sediment, but also the filter assembly 40 is in a leaking state, which can be directly cleaned, thereby improving work efficiency and reducing the difficulty of cleaning.

[0037] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several improvements can be made without departing from the premise of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A filter suitable for heavy oil slurry bed hydrodeconstruction process, characterized by: The invention comprises a shell (10), an upper shell cover (20) and a lower shell cover (30); the shell (10) is a cylindrical structure with two ends open; the shell (10) is provided with a liquid inlet (101) and a filter assembly (40) near the upper open end; the filter assembly (40) is located above the liquid inlet (101); the upper shell cover (20) and the lower shell cover (30) are respectively adapted to the upper and lower open ends of the shell (10); and the upper shell cover (20) is provided with a liquid outlet (201) and an exhaust port (202).

2. The filter suitable for heavy oil slurry bed hydrodeconstruction process according to claim 1, characterized in that: The size of the filter assembly (40) is larger than the inner diameter of the inner cavity cross section of the outer shell (10) and smaller than the outer diameter of the inner cavity cross section. At the same time, at least one of the docking surface of the upper open opening of the outer shell (10) and the docking surface of the upper shell cover (20) is provided with a limiting groove (50). The filter assembly (40) can be embedded in the limiting groove (50) and fixed at the position of the upper open opening of the outer shell (10) by docking and clamping the outer shell (10) and the upper shell cover (20).

3. The filter suitable for heavy oil slurry bed hydrodeconstruction process according to claim 1, characterized in that: The filter assembly (40) is a plate-shaped structure, comprising a frame (401) and a filter screen (402), wherein the filter screen (402) is detachably mounted on the frame (401).

4. The filter suitable for heavy oil slurry bed hydrodeconstruction process according to claim 3, characterized in that: The skeleton (401) comprises an annular outer ring (4011) and reinforcing ribs (4012); a convex edge extends radially on the inner side of the annular outer ring (4011); the convex edge and at least one of the inner wall of the annular outer ring (4011) close to the upper end and the inner wall close to the lower end form a groove (4013); the filter screen (402) can be installed in the groove (4013); the reinforcing rib (4012) is horizontally arranged in the annular outer ring (4011) and its two ends are respectively connected to the convex edge.

5. The filter suitable for heavy oil slurry bed hydrodeconstruction process according to claim 3, characterized in that: The filter screen (402) includes multiple models, each model corresponding to a mesh size.

6. The filter suitable for heavy oil slurry bed hydrodeconstruction process according to claim 1, characterized in that: The liquid inlet (101) is connected to the housing (10) at an angle of 40-55°.

7. The filter suitable for heavy oil slurry bed hydrodeconstruction process according to claim 1, characterized in that: The upper shell cover (20) and the lower shell cover (30) are respectively butted against upper and lower open ends of the outer shell (10) via flange interfaces (60), and the flange interfaces (60) are integrally formed with butt surfaces of the upper shell cover (20), the lower shell cover (30) and the outer shell (10).

8. The filter suitable for heavy oil slurry bed hydrodeconstruction process according to claim 1, characterized in that: At least the upper shell cover (20) is a cover shell structure, that is, the upper shell cover (20) comprises a shell cavity, and the upper shell cover (20) is butted with the upper opening of the outer shell (10) to form a liquid outlet cavity with the filter assembly (40) as a dividing line.

9. The filter suitable for heavy oil slurry bed hydrodeconstruction process according to claim 1, characterized in that: The shell cavity depth of the upper shell cover (20) is smaller than the shell cavity depth of the outer shell (10).

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