Ceramic membrane filtration and heat exchange integrated equipment

Abstract

The invention relates to ceramic membrane filtration and heat exchange integrated equipment which comprises a barrel, a ceramic membrane element and a plurality of heat exchange tubes, the barrel is vertically distributed, and the upper end and the lower end of the barrel are open; the ceramic membrane element is fixedly mounted in the barrel, a clear liquid annulus with two closed ends is formed between the ceramic membrane element and the inner wall of the barrel, and a clear liquid outlet communicated with the clear liquid annulus is formed in the lower end of the side wall of the barrel; a plurality of filter membrane channels penetrating up and down are uniformly arranged on the ceramic membrane element at intervals, the plurality of heat exchange tubes are vertically and fixedly mounted in the plurality of filter membrane channels respectively, two ends of each heat exchange tube extend out of two ends of the plurality of filter membrane channels respectively, and a sewage annulus with two open ends is formed between the plurality of heat exchange tubes and the plurality of filter membrane channels respectively. The device has the beneficial effects that the structure is simple, the design is reasonable, waste heat recovery is performed while sewage treatment is performed, heat loss is reduced, the energy utilization rate is increased, and resources are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of oil mining wastewater treatment equipment, and in particular to ceramic membrane filtration and heat exchange integrated equipment. Background Art

[0002] As oilfield production enters its later stages, the water content of the oil will continue to increase. Therefore, after extraction, the crude oil must be separated from the water. This process inevitably generates a large amount of oilfield wastewater. Preliminary estimates place the total volume of oily wastewater in China's oilfields at approximately 15 million to 20 million tons, with temperatures ranging from 40°C to 70°C. Failure to fully utilize wastewater waste heat before reinjection or discharge not only wastes waste heat resources but also causes severe scaling and corrosion in the sewage treatment system and water injection system equipment and piping, leading to increasing maintenance costs.

[0003] Wastewater treatment and waste heat recovery are both hot topics both domestically and internationally. The current method of treating wastewater first and then recovering waste heat will result in a loss of some heat during the wastewater treatment process. Research on integrated wastewater treatment and waste heat recovery equipment has not yet been conducted. The current method of treating wastewater first and then recovering waste heat will result in the following problems during the wastewater treatment process:

[0004] 1) Existing waste heat recovery equipment recovers waste heat only after sewage treatment, resulting in large heat loss and inability to fully utilize the waste heat.

[0005] 2) The method of treating sewage first and then recovering waste heat divides the process into two steps, which means that the sewage treatment equipment and waste heat recovery equipment need to be installed separately, increasing the floor space.

[0006] 3) Separating sewage treatment and waste heat recovery will increase the number of equipment and lead to increased economic costs. Summary of the Invention

[0007] The present invention provides a ceramic membrane filtration and heat exchange integrated device, aiming to solve the problems in the prior art.

[0008] The technical solution of the present invention to solve the above technical problems is as follows:

[0009] A ceramic membrane filtration and heat exchange integrated equipment, comprising a cylinder, a ceramic membrane element and a plurality of heat exchange tubes, wherein the cylinder is distributed vertically and its upper and lower ends are open; the ceramic membrane element is fixedly installed in the cylinder, and a clear liquid annulus with both ends closed is formed between the ceramic membrane element and the inner wall of the cylinder, and a clear liquid discharge outlet connected to the clear liquid annulus is provided at the lower end of the side wall of the cylinder; a plurality of filter membrane channels penetrating up and down are evenly spaced on the ceramic membrane element, and a plurality of heat exchange tubes are respectively fixedly installed vertically in the plurality of filter membrane channels, and their two ends respectively extend to the outside of the two ends of the plurality of filter membrane channels, and sewage annuities with both ends open are formed between the plurality of heat exchange tubes and the plurality of filter membrane channels.

[0010] The beneficial effects of the present invention are as follows: during operation, the oilfield wastewater to be treated enters from the upper ends of the multiple filter membrane channels, is filtered through the multiple filter membrane channels, and the clear liquid is collected in the clear liquid annulus formed between the cylinder and the ceramic membrane element and discharged from the clear liquid outlet; at the same time, the filtered sludge is discharged from the lower ends of the multiple filter membrane channels;

[0011] During this process, the heat exchange fluid is fed in from the upper ends of multiple heat exchange tubes to exchange heat with the oilfield wastewater in multiple filter membrane channels. After the heat in the oilfield wastewater is recovered, it is discharged from the lower ends of the multiple heat exchange tubes, thereby realizing the recovery of waste heat from the oilfield wastewater.

[0012] The present invention has a simple structure and a reasonable design, realizes waste heat recovery during sewage treatment, reduces heat loss, improves energy utilization, and saves resources.

[0013] On the basis of the above technical solution, the present invention can also be improved as follows.

[0014] Furthermore, it also includes an upper large converging pipe, the lower end of which is connected and communicated with the upper ends of the plurality of heat exchange tubes through a large connector.

[0015] The beneficial effects of adopting the above further solution are simple structure, reasonable design, heat exchange liquid is sent into multiple heat exchange tubes from the large converging pipe above, liquid supply is convenient, and pipelines are saved.

[0016] Furthermore, the upper end of the upper large converging pipe is fixedly connected to the upper small converging pipe.

[0017] The beneficial effect of adopting the above further solution is that the size of the upper small converging tube is smaller than the upper large converging tube, which saves space, consumables and reduces costs.

[0018] Furthermore, a plurality of vertically penetrating connecting pipes are evenly spaced and extended vertically downward from the large connecting head, and the upper ends of the plurality of heat exchange tubes are detachably connected to the lower ends of the plurality of connecting pipes through small connecting heads.

[0019] The beneficial effects of adopting the above further solution are simple structure, reasonable design, the large connector is detachably connected to the multiple heat exchange tubes through multiple small connectors, and disassembly and assembly are convenient, saving time and effort.

[0020] Furthermore, the inner sides of the end surfaces of the lower ends of the plurality of connecting tubes are respectively recessed to form steps, and the upper ends of the plurality of heat exchange tubes are respectively fitted with the plurality of steps.

[0021] The beneficial effect of adopting the above further solution is that the shapes of the multiple connecting pipes are reasonably designed to facilitate better assembly of the heat exchange pipes.

[0022] Furthermore, the plurality of small connectors respectively include tightening sleeves, and the plurality of tightening sleeves are respectively threadedly sleeved on the lower ends of the plurality of connecting pipes; annular protrusions are provided on the inner walls of the plurality of tightening sleeves, and the upper ends of the plurality of heat exchange tubes respectively extend into the plurality of tightening sleeves, and are respectively clamped with the plurality of annular protrusions through clamping rings.

[0023] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and the use of threaded connection between the tightening sleeve and the connecting pipe and the clamping ring to achieve detachable connection between the connecting pipe and the heat exchange pipe, which is convenient for assembly and saves time and effort.

[0024] Furthermore, sealing rings and retaining rings are respectively installed between the multiple annular protrusions and the lower ends of the multiple connecting pipes from top to bottom.

[0025] The beneficial effects of adopting the above further solution are simple structure and reasonable design, and the use of sealing rings and retaining rings can further improve the sealing between the heat exchange tube and the connecting tube.

[0026] Furthermore, it also includes a lower large converging tube, and the lower ends of the plurality of heat exchange tubes are respectively connected to the upper ends of the lower large converging tube.

[0027] The beneficial effect of adopting the above further solution is that the large converging pipe at the bottom is used to collect the solutions after heat exchange in multiple heat exchange tubes, which makes collection convenient, saves time and labor.

[0028] Furthermore, the lower end of the lower large converging pipe is connected to the lower small converging pipe.

[0029] The beneficial effect of adopting the above further solution is that the size of the lower small converging tube is smaller than the lower large converging tube, which saves space, saves consumables and reduces costs.

[0030] Furthermore, the upper end of the ceramic membrane element is connected to a sewage inlet pipe, which is coaxially sleeved outside the upper large converging pipe; the upper end of the ceramic membrane element is connected to a sludge discharge pipe, which is coaxially sleeved outside the lower large converging pipe.

[0031] The beneficial effects of adopting the above further scheme are simple structure and reasonable design. The sewage to be treated is sent to multiple filter membrane channels by the sewage inlet pipe, and the sludge discharged from multiple filter membrane channels is collected by the sludge discharge pipe, which is convenient for treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 for Figure 1 Cross-sectional view along the AA axis;

[0034] Figure 3 Schematic diagram of the internal structure of the present invention;

[0035] Figure 4 for Figure 3 Enlarged view of middle B;

[0036] Figure 5 for Figure 3 Cross-sectional view in CC direction;

[0037] Figure 6 Schematic diagram of the structure of the small connector of the present invention;

[0038] Figure 7 for Figure 6 Cross-sectional view in the middle DD direction;

[0039] Figure 8 This is a schematic structural diagram of a first embodiment of a heat exchange tube in the present invention;

[0040] Figure 9 Schematic diagram of the structure of the second embodiment of the heat exchange tube in the present invention;

[0041] Figure 10 Schematic diagram of the structure of the third embodiment of the heat exchange tube in the present invention;

[0042] Figure 11 This is a schematic structural diagram of a fourth embodiment of the heat exchange tube in the present invention.

[0043] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0044] 1. Cylinder; 2. Ceramic membrane element; 3. Heat exchange tube; 4. Clear liquid annulus; 5. Clear liquid discharge port; 6. Upper large converging tube; 7. Large connector; 8. Upper small converging tube; 9. Connecting tube; 10. Tightening sleeve; 11. Annular protrusion; 12. Snap ring; 13. Sealing ring; 14. Retaining ring; 15. Lower large converging tube; 16. Lower small converging tube; 17. Small connector. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0047] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0049] Example 1

[0050] like Figures 1 to 11 As shown, this embodiment provides a ceramic membrane filtration and heat exchange integrated equipment, including a cylinder 1, a ceramic membrane element 2 and a plurality of heat exchange tubes 3, the cylinder 1 is distributed vertically, and its upper and lower ends are open; the ceramic membrane element 2 is fixedly installed in the cylinder 1, and a clear liquid annulus 4 with both ends closed is formed between it and the inner wall of the cylinder 1, and a clear liquid discharge outlet 5 connected to the clear liquid annulus 4 is provided at the lower end of the side wall of the cylinder 1; a plurality of filter membrane channels penetrating up and down are evenly spaced on the ceramic membrane element 2, and the plurality of heat exchange tubes 3 are respectively fixedly installed vertically in the plurality of filter membrane channels, and their two ends respectively extend to the outside of the two ends of the plurality of filter membrane channels, and sewage annuities with both ends open are formed between the plurality of heat exchange tubes 3 and the plurality of filter membrane channels.

[0051] During operation, the oilfield wastewater to be treated enters from the upper ends of the multiple filter membrane channels. After being filtered through the multiple filter membrane channels, the clear liquid is collected in the clear liquid annulus 4 formed between the cylinder 1 and the ceramic membrane element 2 and discharged from the clear liquid outlet 5. At the same time, the filtered sludge is discharged from the lower ends of the multiple filter membrane channels.

[0052] During this process, the heat exchange fluid is fed in from the upper ends of the multiple heat exchange tubes 3 to exchange heat with the oilfield wastewater in the multiple filter membrane channels. After the heat in the oilfield wastewater is recovered, it is discharged from the lower ends of the multiple heat exchange tubes 3, thereby realizing the recovery of waste heat from the oilfield wastewater.

[0053] Preferably, in this embodiment, the heat exchange tube 3 may adopt the following different structures:

[0054] Solution 1: The heat exchange tube 3 is a straight tubular structure with a smooth outer wall.

[0055] Solution 2: The heat exchange tube 3 is a straight tubular structure with a smooth outer wall, and ribs are spirally wound on its outer wall. The ribs can increase the contact area between the heat exchange tube 3 and the oilfield wastewater, thereby improving the heat exchange effect.

[0056] Solution 3: The heat exchange tube 3 is a wavy tubular structure.

[0057] Solution 4: The heat exchange tube 3 is a straight tubular structure with a smooth outer wall, and a plurality of heat exchange strips are fixedly installed on the outer wall at even intervals along its circumference, and the plurality of heat exchange strips extend along the axial direction of the heat exchange tube 3 respectively.

[0058] Based on the above solution, sealing members such as sealing rings are fixedly installed between the upper and lower ends of the cylinder 1 and the upper and lower ends of the ceramic membrane element 2 respectively.

[0059] In addition, the number of the clear liquid discharge port 5 may be one or more.

[0060] The ceramic membrane element 2 is an integrated structure, and a plurality of filter membrane channels are evenly spaced and distributed on the ceramic membrane element 2 .

[0061] Alternatively, the ceramic membrane element 2 includes a plurality of mutually independent cylindrical structures, and the plurality of filtration membrane channels are respectively on the plurality of cylindrical structures.

[0062] This embodiment has a simple structure and a reasonable design, and realizes waste heat recovery during sewage treatment, thereby reducing heat loss, improving energy utilization, and saving resources.

[0063] Example 2

[0064] On the basis of Example 1, this embodiment further includes an upper large converging pipe 6 , the lower end of which is connected and communicated with the upper ends of the plurality of heat exchange tubes 3 via a large connector 7 .

[0065] This solution has a simple structure and a reasonable design. The heat exchange liquid is fed into the multiple heat exchange tubes 3 through the upper large converging tube 6, which makes liquid supply convenient and saves pipelines.

[0066] Preferably, in this embodiment, the upper large converging pipe 6 is preferably a tubular structure with a thin upper end and a thick lower end.

[0067] Example 3

[0068] On the basis of Example 2, in this embodiment, the upper end of the upper large converging pipe 6 is fixedly connected to the upper small converging pipe 8 .

[0069] The upper small converging tube 8 is smaller than the upper large converging tube 6 , which saves space, consumables and reduces costs.

[0070] Example 4

[0071] Based on any one of Examples 2 to 3, in this embodiment, a plurality of connecting tubes 9 extending vertically downward from the large connecting head 7 are evenly spaced apart, and the upper ends of the plurality of heat exchange tubes 3 are detachably connected to the lower ends of the plurality of connecting tubes 9 through small connecting heads 17.

[0072] This solution has a simple structure and a reasonable design. The large connector 7 is detachably connected to the multiple heat exchange tubes 3 through multiple small connectors 17, which makes disassembly and assembly convenient, saving time and effort.

[0073] Alternatively, the upper ends of the plurality of heat exchange tubes 3 are respectively welded together with the lower ends of the plurality of connecting tubes 9 and communicated with each other.

[0074] Example 5

[0075] On the basis of Example 4, in this embodiment, the inner sides of the end surfaces of the lower ends of the plurality of connecting tubes 9 are respectively recessed to form steps, and the upper ends of the plurality of heat exchange tubes 3 are respectively fitted with the plurality of steps.

[0076] The shapes of the multiple connecting pipes 9 are reasonably designed to better assemble the heat exchange pipes 3.

[0077] Alternatively, the lower ends of the plurality of connecting tubes 9 are planar structures, and the upper ends of the plurality of heat exchange tubes 3 are respectively fitted with the lower ends of the plurality of connecting tubes 9 .

[0078] Example 6

[0079] On the basis of any one of Examples 4 to 5, in this embodiment, the plurality of small connectors 17 respectively include a tightening sleeve 10, and the plurality of tightening sleeves 10 are respectively threadedly sleeved on the lower ends of the plurality of connecting pipes 9; an annular protrusion 11 is provided on the inner wall of the plurality of tightening sleeves 10, and the upper ends of the plurality of heat exchange tubes 3 respectively extend into the plurality of tightening sleeves 10, and are respectively clamped with the plurality of annular protrusions 11 through a clamping ring 12.

[0080] This solution has a simple structure and a reasonable design. The threaded connection between the tightening sleeve 10 and the connecting pipe 9 and the clamping ring 12 are used to achieve a detachable connection between the connecting pipe 9 and the heat exchange pipe 3, which is convenient for assembly and saves time and effort.

[0081] Preferably, in this embodiment, the plurality of tightening sleeves 10 are preferably structured with a thick upper end and a thin lower end, and the lower ends thereof are respectively tapered.

[0082] In addition, a plurality of tightening sleeves 10 are respectively threadedly sleeved on the outer sides of the lower ends of the plurality of connecting pipes 9 .

[0083] Example 7

[0084] On the basis of Example 6, in this embodiment, sealing rings 13 and retaining rings 14 are respectively installed between the multiple annular protrusions 11 and the lower ends of the multiple connecting pipes 9 from top to bottom.

[0085] This solution has a simple structure and a reasonable design. The sealing performance between the heat exchange tube 3 and the connecting tube 9 can be further enhanced by using the sealing ring 13 and the retaining ring 14 .

[0086] Based on the above solution, the sealing ring 13 and the retaining ring 14 are respectively located between the corresponding annular protrusion 11 and the lower end of the continuous tube 9 .

[0087] Preferably, in this embodiment, the sealing ring 13 is preferably a rubber sealing ring.

[0088] Example 8

[0089] On the basis of any one of Examples 2 to 7, this embodiment further includes a lower large converging tube 15 , and the lower ends of the plurality of heat exchange tubes 3 are respectively connected to the upper ends of the lower large converging tube 15 .

[0090] This solution utilizes the large collecting tube 15 at the bottom to collect the solutions after heat exchange in multiple heat exchange tubes 3, which is convenient for collection and saves time and effort.

[0091] Based on the above solution, the lower large converging pipe 15 has a structure with a thick upper end and a thin lower end, and its upper end is closed and its lower end is open.

[0092] In addition, the upper end of the lower large converging pipe 15 is provided with a plurality of threaded holes, and the lower ends of the plurality of heat exchange tubes 3 extend into the plurality of threaded holes and are threadedly connected, which facilitates assembly and disassembly.

[0093] Alternatively, the lower ends of the plurality of heat exchange tubes 3 respectively pass through the upper end of the lower large converging tube 15 and are welded.

[0094] Example 9

[0095] On the basis of Example 8, in this embodiment, the lower end of the lower large converging pipe 15 is connected to a lower small converging pipe 16 .

[0096] The size of the lower small converging tube 16 is smaller than the lower large converging tube, which saves space, consumables and reduces costs.

[0097] Preferably, in this embodiment, the upper end of the lower small converging pipe 16 is threadedly connected to the lower end of the lower large converging pipe 15 .

[0098] Alternatively, the upper end of the lower small converging pipe 16 and the lower end of the lower large converging pipe 15 are welded together.

[0099] Example 10

[0100] Based on any one of Examples 8 to 9, in this embodiment, the upper end of the ceramic membrane element 2 is connected to a sewage inlet pipe, and the sewage inlet pipe is coaxially sleeved outside the upper large converging pipe 6; the upper end of the ceramic membrane element 2 is connected to a sludge discharge pipe, and the sludge discharge pipe is coaxially sleeved outside the lower large converging pipe 15.

[0101] This solution has a simple structure and reasonable design. It uses a sewage inlet pipe to send the oilfield sewage to be treated to multiple filter membrane channels, and uses a sludge discharge pipe to collect the sludge discharged from multiple filter membrane channels, which is convenient for treatment.

[0102] Preferably, in this embodiment, the above-mentioned sewage inlet pipe and sludge discharge pipe are preferably circular tubular structures, and the upper end of the upper small converging pipe 8 extends outside the upper end of the sewage inlet pipe, and the lower end of the lower small converging pipe 16 extends outside the sludge discharge pipe.

[0103] The working principle of the present invention is as follows:

[0104] During operation, the oilfield wastewater to be treated enters from the upper ends of the multiple filter membrane channels. After being filtered through the multiple filter membrane channels, the clear liquid is collected in the clear liquid annulus 4 formed between the cylinder 1 and the ceramic membrane element 2 and discharged from the clear liquid outlet 5. At the same time, the filtered sludge is discharged from the lower ends of the multiple filter membrane channels.

[0105] During this process, the heat exchange fluid is fed in through the upper small converging tube 8, the upper large converging tube 6 and the upper ends of the multiple heat exchange tubes 3, and exchanges heat with the oilfield wastewater in the multiple filter membrane channels. After the heat in the oilfield wastewater is recovered, it is discharged through the lower ends of the multiple heat exchange tubes 3, the lower large converging tube 15 and the lower small converging tube 16, thereby realizing the recovery of waste heat from the oilfield wastewater.

[0106] Based on the treatment requirements of integrated oilfield wastewater filtration and heat exchange, the present invention provides a ceramic membrane filtration and heat exchange integrated equipment, which has the following beneficial effects:

[0107] 1) This invention combines a ceramic membrane filter with a heat exchanger, allowing waste heat to be recovered during the sewage treatment process. Compared with traditional sewage treatment equipment, this invention reduces heat loss and improves waste heat recovery efficiency.

[0108] 2) The present invention is easy to assemble and disassemble, and is simple to clean. It can be cleaned by simply removing the connector and taking off the heat exchange tube.

[0109] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0110] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0111] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ceramic membrane filtration and heat exchange integrated equipment, characterized by: The invention comprises a cylinder (1), a ceramic membrane element (2) and a plurality of heat exchange tubes (3), wherein the cylinder (1) is vertically distributed and its upper and lower ends are both open; the ceramic membrane element (2) is fixedly installed in the cylinder (1), and a clear liquid annulus (4) with both ends closed is formed between the ceramic membrane element (2) and the inner wall of the cylinder (1); a clear liquid discharge port (5) connected to the clear liquid annulus (4) is provided at the lower end of the side wall of the cylinder (1); a plurality of filter membrane channels penetrating vertically are evenly spaced on the ceramic membrane element (2); a plurality of heat exchange tubes (3) are respectively fixedly installed vertically in the plurality of filter membrane channels, and their two ends respectively extend to the outside of the two ends of the plurality of filter membrane channels; a sewage annulus with both ends open is formed between the plurality of heat exchange tubes (3) and the plurality of filter membrane channels.

2. The ceramic membrane filtration and heat exchange integrated equipment according to claim 1, characterized in that: It also includes an upper large converging pipe (6), the lower end of which is connected and communicated with the upper ends of the plurality of heat exchange pipes (3) via a large connector (7).

3. The ceramic membrane filtration and heat exchange integrated equipment according to claim 2, characterized in that: The upper end of the upper large converging pipe (6) is fixedly connected to the upper small converging pipe (8).

4. The ceramic membrane filtration and heat exchange integrated equipment according to claim 2, characterized in that: A plurality of vertically extending connecting pipes (9) extending vertically downward at even intervals from the large connecting head (7) are connected; the upper ends of the plurality of heat exchange tubes (3) are detachably connected to the lower ends of the plurality of connecting pipes (9) via small connecting heads (17).

5. The ceramic membrane filtration and heat exchange integrated equipment according to claim 4, characterized in that: The inner sides of the end surfaces of the lower ends of the plurality of connecting tubes (9) are respectively recessed to form steps, and the upper ends of the plurality of heat exchange tubes (3) are respectively fitted with the plurality of steps.

6. The ceramic membrane filtration and heat exchange integrated equipment according to claim 4, characterized in that: The plurality of small connectors (17) respectively include tightening sleeves (10), and the plurality of tightening sleeves (10) are respectively threadedly sleeved on the lower ends of the plurality of connecting pipes (9); annular protrusions (11) are provided on the inner walls of the plurality of tightening sleeves (10), and the upper ends of the plurality of heat exchange tubes (3) respectively extend into the plurality of tightening sleeves (10) and are respectively clamped with the plurality of annular protrusions (11) through clamping rings (12).

7. The ceramic membrane filtration and heat exchange integrated equipment according to claim 6, characterized in that: Sealing rings (13) and retaining rings (14) are respectively installed between the multiple annular protrusions (11) and the lower ends of the multiple connecting pipes (9) from top to bottom.

8. The ceramic membrane filtration and heat exchange integrated equipment according to any one of claims 2 to 7, characterized in that: It also includes a lower large converging pipe (15), and the lower ends of the plurality of heat exchange pipes (3) are respectively connected to the upper ends of the lower large converging pipe (15).

9. The ceramic membrane filtration and heat exchange integrated equipment according to claim 8, characterized in that: The lower end of the lower large converging pipe (15) is connected to the lower small converging pipe (16).

10. The ceramic membrane filtration and heat exchange integrated equipment according to claim 8, characterized in that: The upper end of the ceramic membrane element (2) is connected to a sewage inlet pipe, which is coaxially sleeved outside the upper large converging pipe (6); the upper end of the ceramic membrane element (2) is connected to a sludge discharge pipe, which is coaxially sleeved outside the lower large converging pipe (15).

Images