Flue gas waste heat recycling system of oil production plant

Abstract

The utility model relates to the field of heat recovery, and discloses a flue gas waste heat recycling system for an oil production plant, which comprises a plurality of assembly boxes, the upper, lower, left and right sides of each assembly box are opened, each assembly box is divided into an upper layer and a lower layer, the number of each layer is equal, and the assembly boxes are fixedly connected up, down, left and right. Cover plates are fixedly connected to the top of the assembling box on the uppermost layer and the bottom of the assembling box on the lowermost layer, a plurality of partition plates are arranged between the assembling boxes on each layer, the partition plates are distributed in an upper-lower-layer staggered mode, side plates are fixedly connected to the outer walls of the assembling boxes on the rearmost side of the upper layer and the leftmost side of the lower layer respectively, and an air inlet hopper is fixedly connected to the left side wall of the assembling box on the upper layer; the air inlet hopper is communicated with the assembling boxes, the left side wall of the air inlet hopper is fixedly communicated with an air inlet pipe, the right side wall of the assembling box on the rightmost side of the lower layer is fixedly connected with an air outlet hopper, and the right side wall of the air outlet hopper is fixedly communicated with an air outlet pipe.

Description

Technical Field

[0001] The utility model relates to the field of heat recovery, and specifically to a system for recovering and reusing waste heat of flue gas in an oil production plant. Background Art

[0002] With the rapid development of industrialization, oil production plants will generate a large amount of waste gas during the production process. These waste gases contain a lot of heat. If they are directly discharged into the environment, it will not only cause waste of thermal energy, but may also cause pollution to the atmospheric environment.

[0003] Current heat recovery devices often adopt a fixed design and cannot be flexibly adjusted according to the size of the exhaust gas discharge. As a result, in actual applications, the heat recovery devices often cannot fully adapt to the production needs of the oil field, resulting in low energy utilization efficiency. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the utility model provides a system for recovering and reusing waste heat of flue gas in an oil production plant.

[0005] The technical solution adopted by this utility model:

[0006] A system for recovering and reusing waste heat from flue gas in an oil production plant comprises a plurality of assembly boxes, wherein the assembly boxes are opened on four sides, the top, bottom, left and right, and the assembly boxes are divided into two layers, each layer having an equal number of assembly boxes, which are fixedly connected up, down, left and right, and the top of the assembly box on the uppermost layer and the bottom of the assembly box on the lowermost layer are fixedly connected with a cover plate, and a plurality of partitions are arranged between the assembly boxes on each layer, and the partitions are staggered in the upper and lower layers, and the outer walls of the rearmost assembly boxes on the upper layer and the leftmost assembly boxes on the lower layer are fixedly connected with side panels respectively, and the left side wall of the assembly box on the upper layer is fixedly connected with an air inlet scoop, which is connected to the assembly box, and the left side wall of the air inlet scoop is fixedly connected with an air inlet duct, and the right side wall of the rightmost assembly box on the lower layer is fixedly connected with an air outlet scoop, and the right side wall of the air outlet scoop is fixedly connected with an air outlet duct, and an exhaust fan is installed inside the air outlet duct, and the right side of the air outlet duct An exhaust duct is provided, the right end of the air outlet duct is fixedly connected to the bottom of the side wall of the exhaust duct, an exhaust fan 2 is installed on the internal top of the exhaust duct, the front side wall and the rear side wall of the assembly box are respectively fixedly connected with connecting pipe 1 and connecting pipe 2, a heat exchange tube is provided in the assembly box, the heat exchange tube is reciprocated up and down, the heat exchange tube is a serpentine tube, the two ends of the heat exchange tube are respectively fixedly connected with connecting pipe 1 and connecting pipe 2, a water inlet pipe and a connecting pipe fitting 1 are provided on the front side of the assembly box, the upper and lower ends of the connecting pipe fitting 1 are respectively fixedly connected with the two connecting pipes 1 of the upper and lower layers, and several connecting pipe fittings 1 are fixedly connected with the water inlet pipe, a water outlet pipe and a connecting pipe fitting 2 are provided on the rear side of the assembly box, the two ends of the connecting pipe fitting 2 are respectively fixedly connected with the two connecting pipes 2 of the upper and lower layers, and the rear ends of several connecting pipe fittings 2 are fixedly connected with the water outlet pipe.

[0007] The assembly box includes a frame body, which is a cubic frame with four openings on its four sides. The left and right sides and the top of the upper frame body are respectively fixedly connected to the cover plate, the left and right sides and the bottom of the lower frame body are respectively fixedly connected to the cover plate, the left and right inner walls of the frame body are both fixedly connected to the filter screen, a sealing gasket is provided between the frame body and the cover plate, a partition is provided between the two upper frames, and the partition is inside the sealing gasket; the upper partition is arranged from left to right between the first frame body and the second frame body, between the third frame body and the fourth frame body, and between the fifth frame body and the sixth frame body, in order The partitions are arranged in this order; the partitions of the lower layer are arranged from left to right on the left outer wall of the first frame, between the second frame and the third frame, and between the fourth frame and the fifth frame, and the partitions are arranged in this order; the sealing gasket matches the size of the side of the frame, the four corners of the front side wall and the four corners of the rear side wall of the frame are fixedly connected with connecting angle irons, bolts are inserted between adjacent connecting angle irons, and the two frames are fixedly connected by the angle irons and bolts, the air inlet scoop is connected to the interior of the leftmost frame of the upper layer, and the air outlet scoop is connected to the interior of the rightmost frame of the lower layer.

[0008] Beneficial effects of the utility model:

[0009] The utility model adopts a design of multiple assembly boxes, which can be easily spliced ​​and assembled to form heat recovery devices of different sizes. This modular design allows the system to be flexibly adjusted according to the actual exhaust gas discharge volume to meet the needs of oil production plants of different sizes. By setting partitions between the assembly boxes, the direction and size of the air duct can be easily customized. This design not only allows the exhaust gas to flow evenly through each heat exchange tube, improving the heat exchange efficiency, but also makes the system more flexible and can adapt to different working environments and exhaust gas emission requirements. The filter can filter the dust contained in the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 It is a schematic diagram of the utility model from the rear side perspective;

[0012] Figure 3 It is a schematic cross-sectional view of part of the structure of the utility model;

[0013] Figure 4 It is a cross-sectional view of the utility model;

[0014] Figure 5 It is a structural schematic diagram of the utility model assembly box;

[0015] Figure 6 It is a schematic diagram of the air duct path of the utility model;

[0016] Figure 7 It is a connection schematic diagram of the heat exchange tube of the utility model.

[0017] In all the drawings, the specific reference numerals are: 1. assembly box; 11. frame; 12. filter; 13. sealing gasket; 14. connecting pipe one; 15. connecting pipe two; 16. connecting angle iron; 2. cover plate; 21. partition plate; 3. side plate; 4. air inlet scoop; 41. air inlet duct; 5. air outlet scoop; 51. air outlet duct; 52. exhaust fan one; 6. exhaust duct; 61. exhaust fan two; 7. water inlet pipe; 71. connecting pipe fitting one; 8. water outlet pipe; 81. connecting pipe fitting two; 9. heat exchange pipe. DETAILED DESCRIPTION

[0018] like Figure 1-7 As shown: a system for recovering and reusing waste heat from flue gas in an oil production plant, comprising a plurality of assembly boxes 1, the assembly boxes 1 are open on four sides, the assembly boxes 1 are divided into upper and lower layers, the number of each layer is equal, the assembly boxes 1 are fixedly connected up and down, the top of the assembly box 1 of the uppermost layer and the bottom of the assembly box 1 of the lowermost layer are fixedly connected with a cover plate 2, a plurality of partitions 21 are arranged between the assembly boxes 1 of each layer, the partitions 21 are staggered in the upper and lower layers, the outer walls of the assembly boxes 1 on the rear side of the upper layer and the leftmost side of the lower layer are respectively fixedly connected with side panels 3, the left side wall of the assembly box 1 of the upper layer is fixedly connected with an air inlet scoop 4, the air inlet scoop 4 is connected with the assembly box 1, the left side wall of the air inlet scoop 4 is fixedly connected with an air inlet pipe 41, the right side wall of the assembly box 1 on the rightmost side of the lower layer is fixedly connected with an air outlet scoop 5, the right side wall of the air outlet scoop 5 is fixedly connected with an air outlet pipe 51, an exhaust fan 52 is installed inside the air outlet pipe 51, and the right side of the air outlet pipe 51 has an exhaust fan 52. Tube 6, the right end of the air outlet pipe 51 is fixedly connected to the bottom of the side wall of the exhaust pipe 6, and an exhaust fan 2 61 is installed on the internal top of the exhaust pipe 6. The front side wall and the rear side wall of the assembly box 1 are respectively fixedly connected with a connecting pipe 14 and a connecting pipe 2 15. The assembly box 1 has a heat exchange tube 9, and the heat exchange tube 9 is reciprocated up and down. The heat exchange tube 9 is a serpentine tube. The two ends of the heat exchange tube 9 are respectively fixedly connected with the connecting pipe 14 and the connecting pipe 2 15. The front side of the assembly box 1 has a water inlet pipe 7 and a connecting pipe fitting 1 71. The upper and lower ends of the connecting pipe fitting 1 71 are respectively fixedly connected to the two connecting pipes 14 of the upper and lower layers, and several connecting pipe fittings 1 71 are fixedly connected to the water inlet pipe 7. The rear side of the assembly box 1 has a water outlet pipe 8 and a connecting pipe fitting 2 81. The two ends of the connecting pipe fitting 2 81 are respectively fixedly connected to the two connecting pipes 2 15 of the upper and lower layers, and the rear ends of several connecting pipe fittings 2 81 are fixedly connected to the water outlet pipe 8.

[0019] The assembly box 1 includes a frame 11, which is a cubic frame. The four sides of the frame 11 are open. The left and right sides and the top of the upper frame 11 are respectively fixedly connected to the cover plate 2, and the left and right sides and the bottom of the lower frame 11 are respectively fixedly connected to the cover plate 2. The inner walls of the left and right sides of the frame 11 are fixedly connected with a filter screen 12. There is a sealing gasket 13 between the frame 11 and the cover plate 2. A partition 21 is arranged between the two upper frames 11, and the partition 21 is inside the sealing gasket 13; the upper partition 21 is arranged from left to right between the first frame 11 and the second frame 11, between the third frame 11 and the fourth frame 11, and between the fifth frame 11 and the sixth frame 11. The partition 21 is arranged in this order; the partition 21 of the lower layer is arranged from left to right on the left outer wall of the first frame 11, between the second frame 11 and the third frame 11, and between the fourth frame 11 and the fifth frame 11, and the partition 21 is arranged in this order; the sealing gasket 13 matches the size of the side of the frame 11, and the four corners of the front side wall and the four corners of the rear side wall of the frame 11 are fixedly connected with connecting angle irons 16, and bolts are inserted between adjacent connecting angle irons 16. The two frames 11 are fixedly connected by angle irons 16 and bolts, and the air inlet scoop 4 is connected to the inside of the leftmost frame 11 of the upper layer, and the air outlet scoop 5 is connected to the inside of the rightmost frame 11 of the lower layer. The frame 11 and the cover plate 2 are designed to be detachable, and the detachable design structure is a prior art structure, so that the frame 11 and the cover plate 2 can be fixed and separated. The filter 12 can filter the dust contained in the exhaust gas. The two frames 11 are fixedly connected by angle irons 16 and bolts, which is a prior art device means and will not be described in detail.

[0020] The assembly box 1 can be spliced ​​and assembled, and the heat exchange tube 9 is installed in the assembly box 1, and connected with the connecting tube 1 14 and the connecting tube 2 15. The connection between the assembly boxes 1 is sealed by the sealing gasket 13, and the outer side of the assembly box 1 is sealed by the cover plate 2 and the side plate 3. The partition 21 is used to select a suitable position to place it, and one side of the assembly box 1 is blocked to define a custom air duct. The assembly boxes 1 are fixed to each other by bolts and nuts through the connecting angle irons 16. The exhaust gas enters the assembly box 1 through the air inlet pipe 41 and the air inlet hopper 4, and flows through the composed air duct. The exhaust gas is drained from the air outlet pipe 51 to the exhaust pipe 6 through the exhaust fan 1 52, and is discharged through the exhaust fan 2 61. Cold water enters each heat exchange tube 9 through the water inlet pipe 7 and the connecting pipe fitting 1 71. The heat of the exhaust gas is heat-exchanged with the cold water when passing through the heat exchange tube 9, and the hot water is discharged through the connecting pipe fitting 2 81 and the water outlet pipe 8. The water pipes are customized in series through pipe fittings. The overall modular design is convenient for users to assemble heat recovery devices of different sizes according to the exhaust gas displacement. The cover plate 2 and the frame 11 are detachable, so that dust brought by exhaust gas inside the frame 11 can be cleaned. The present invention only protects the mechanical part, and the functions realized by the software control part are not within the protection scope of the present invention.

Claims

1. A system for recovering and reusing waste heat from flue gas in an oil production plant, characterized in that: The utility model comprises a plurality of assembly boxes (1), wherein the assembly boxes (1) are opened on four sides, namely, top, bottom, left and right. The assembly boxes (1) are divided into two layers, each layer having an equal number of assembly boxes. The assembly boxes (1) are fixedly connected on the top, bottom and left and right sides. The top of the assembly boxes (1) on the top layer and the bottom of the assembly boxes (1) on the bottom layer are both fixedly connected with a cover plate (2). A plurality of partition plates (21) are arranged between the assembly boxes (1) on each layer. The partition plates (21) are staggered in the upper and lower layers. The outer walls of the assembly boxes (1) on the rearmost side of the upper layer and the leftmost side of the lower layer are respectively fixedly connected with side plates (21). 3), the left side wall of the upper assembly box (1) is fixedly connected with an air inlet scoop (4), the air inlet scoop (4) is connected with the assembly box (1), the left side wall of the air inlet scoop (4) is fixedly connected with an air inlet pipe (41), the right side wall of the lower rightmost assembly box (1) is fixedly connected with an air outlet scoop (5), the right side wall of the air outlet scoop (5) is fixedly connected with an air outlet pipe (51), an exhaust fan (52) is installed inside the air outlet pipe (51), the right side of the air outlet pipe (51) is provided with an exhaust pipe (6), and the right side of the air outlet pipe (51) is provided with an exhaust fan (52). The end is fixedly connected to the bottom of the side wall of the exhaust pipe (6), the top of the exhaust pipe (6) is equipped with an exhaust fan 2 (61), the front side wall and the rear side wall of the assembly box (1) are respectively fixedly connected with a connecting pipe 1 (14) and a connecting pipe 2 (15), the assembly box (1) has a heat exchange pipe (9), the heat exchange pipe (9) is distributed back and forth up and down, the heat exchange pipe (9) is a serpentine pipe, the two ends of the heat exchange pipe (9) are respectively fixedly connected to the connecting pipe 1 (14) and the connecting pipe 2 (15), the front side of the assembly box (1) is connected to the connecting pipe 1 (14) and the connecting pipe 2 (15), and the front side of the assembly box (1) is connected to the connecting pipe 1 (14) and the connecting pipe 2 (15). The assembly box (1) comprises a water inlet pipe (7) and a connecting pipe piece (71), wherein the upper and lower ends of the connecting pipe piece (71) are respectively fixedly connected to two connecting pipe pieces (14) of the upper and lower layers, and a plurality of connecting pipe pieces (71) are fixedly connected to the water inlet pipe (7). The rear side of the assembly box (1) comprises a water outlet pipe (8) and a connecting pipe piece (81), wherein the two ends of the connecting pipe piece (81) are respectively fixedly connected to two connecting pipe pieces (15) of the upper and lower layers, and the rear ends of a plurality of connecting pipe pieces (81) are fixedly connected to the water outlet pipe (8).

2. The oil production plant flue gas waste heat recovery and reuse system according to claim 1 is characterized in that: The assembly box (1) comprises a frame (11), the frame (11) is a cubic frame, the four sides of the frame (11) are open, the left and right sides and the top of the upper frame (11) are respectively fixedly connected to the cover plate (2), the left and right sides and the bottom of the lower frame (11) are respectively fixedly connected to the cover plate (2), the left and right inner walls of the frame (11) are both fixedly connected to the filter screen (12), a sealing gasket (13) is provided between the frame (11) and the cover plate (2), a partition (21) is provided between the two upper frames (11), and the partition (21) is inside the sealing gasket (13); the partition (21) of the upper layer is arranged from left to right between the first frame (11) and the second frame (11), between the third frame (11) and the fourth frame (11), between the fifth frame (11) and the sixth frame (11), and between the fifth frame (11) and the sixth frame (11). The partitions (21) are arranged between the first frame body (11) and the second frame body (11), and between the third frame body (11) and the fourth frame body (11) and the fifth frame body (11) in this order; the partitions (21) of the lower layer are arranged from left to right on the left outer wall of the first frame body (11), between the second frame body (11) and the third frame body (11), and between the fourth frame body (11) and the fifth frame body (11), and the partitions (21) are arranged in this order; the sealing gasket (13) matches the size of the side of the frame body (11); the four corners of the front side wall and the four corners of the rear side wall of the frame body (11) are fixedly connected with connecting angle irons (16); bolts are inserted between adjacent connecting angle irons (16); the two frames (11) are fixedly connected by the angle irons (16) and the bolts; the air inlet scoop (4) is connected to the interior of the leftmost frame body (11) of the upper layer, and the air outlet scoop (5) is connected to the interior of the rightmost frame body (11) of the lower layer.

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