Circulating water heat exchanger for utilizing waste heat of associated gas discharge torch

Abstract

The utility model discloses a circulating water heat exchanger for utilizing waste heat of an associated gas discharge torch, belongs to the technical field of heat energy recycling equipment, and aims to solve the problem that the combustion heat energy of the existing oilfield associated gas torch is reduced and wasted for heat energy utilization. A conical spiral heat-conducting coil pipe main body is formed by connecting one end of a conical spiral heat-conducting coil pipe group in parallel with a metal heat-conducting coil pipe water outlet pipe bundle and connecting the other end of the conical spiral heat-conducting coil pipe group in parallel with a metal heat-conducting coil pipe water inlet pipe bundle; isolation supporting connecting plate ribs are welded in gaps between pipe bodies of the conical spiral heat conduction coil pipe set in a clamped mode, a coil pipe centralizing positioner is welded to the top of the metal heat conduction coil pipe set, and a heat conduction coil pipe supporting bottom tray is welded to the bottom of the metal heat conduction coil pipe set in a connected mode. And the external connecting pipe joint of the water outlet pipe bundle of the metal heat-conducting coil pipe and the external connecting pipe joint of the water inlet pipe bundle of the metal heat-conducting coil pipe extend outwards and are connected to the outer side of the torch cylinder body. The whole structure is practical and suitable for utilization of heat energy of the associated gas discharge torch.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat energy recovery and utilization equipment, specifically relating to a device for recovering and utilizing heat energy from associated gas flares in petroleum. Technical Background

[0002] With the booming development of the oil and gas industry and the increasing demands for energy conservation, emission reduction, low carbon emissions, and environmental protection in oil fields, higher requirements are being placed on the technology for recovering and utilizing the heat energy generated by associated gas combustion flares. In known technologies, associated gas in oil fields refers to gases that cannot be directly utilized and are discharged along with petroleum liquids during oil field extraction. While existing associated gas flares, employing methods such as fire-driven, steam-driven, or gas-driven combustion, control emissions and combustion through operational devices to minimize waste, still suffer from wasted associated gas combustion heat energy, failing to achieve effective recovery and utilization. Conventional heat exchangers cannot withstand the high temperatures exceeding 1000℃ and the presence of corrosive components like H2S and CO2 in associated gas flares. For example, a associated gas venting combustion monitoring and control flare disclosed in Chinese Patent Publication No. CN209605172U, while capable of real-time monitoring of associated gas flare combustibility and improving combustion safety, still has room for improvement in associated gas flare heat energy recovery and utilization due to its structural limitations. This directly relates to the recovery and reuse of associated gas flare heat energy in oilfields and the achievement of low-carbon and environmental protection goals. Therefore, it is necessary to research and develop a novel flare combustion heat energy utilization device suitable for reducing waste and utilizing associated gas combustion heat energy. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and solve the problem of waste heat energy from associated gas flares in oil fields. Based on the characteristics of the combustion heat radiation principle of associated gas flames, this invention provides a novel and practical hot water heat exchange device for utilizing waste heat from associated gas flares, which has high absorption and heat exchange efficiency for the combustion heat of associated gas flares.

[0004] The technical solution adopted by this utility model to solve the above problems is:

[0005] A circulating water heat exchanger for utilizing waste heat from associated gas emission flares includes: a flare cylinder, an associated gas flare combustion nozzle, a conical spiral heat-conducting coil body, isolation support connecting plates, a heat-conducting coil support base, a coil straightening and positioning device, and a refractory concrete cylindrical base. The conical spiral heat-conducting coil body consists of a conical spiral heat-conducting coil assembly with one end connected in parallel to a metal heat-conducting coil outlet pipe bundle and the other end connected in parallel to a metal heat-conducting coil inlet pipe bundle. The conical spiral heat-conducting coil assembly is further characterized by its various tube bodies... The gaps between the components are reinforced with insulating support plates and ribs. A coil straightening and positioning device is welded to the top structure of the conical spiral heat-conducting coil assembly, and a heat-conducting coil support base is welded to the bottom structure. The bottom of the heat-conducting coil support base is connected to the refractory concrete cylindrical base by anchor bolts. The main body of the conical spiral heat-conducting coil is fitted into the inner cavity of the flare tube. The external connecting pipe joints of the metal heat-conducting coil outlet pipe bundle and the metal heat-conducting coil inlet pipe bundle are both extended and connected to the outside of the flare tube.

[0006] The above-mentioned circulating water heat exchanger for waste heat utilization of associated gas emission flare, wherein the metal heat-conducting coil outlet pipe bundle is composed of a metal heat-conducting coil body with a conical spiral heat-conducting coil body, the top side of the outlet pipe of the metal heat-conducting coil body is welded to a heating coil rotary pipe elbow, the other end of the heating coil rotary pipe elbow is welded to the upper end of the outlet pipe bundle vertical connecting pipe group, the lower end of the outlet pipe bundle vertical connecting pipe group is welded to an outlet pipe bundle vertical connecting pipe elbow, the other end of the outlet pipe bundle vertical connecting pipe elbow penetrates the pipe wall of the outlet water collection pipe, is sealed and welded to the outlet water collection pipe, and the sealed pipe cavity of the outlet water collection pipe and the return water pipeline are mutually sealed and welded to form a connecting channel of the return water pipe bundle, forming a conical spiral metal coil circulating water outlet pipe loop;

[0007] The conical spiral metal coil circulating water inlet pipe bundle consists of a heating coil water inlet pipe elbow welded to the water outlet at the bottom of the metal heat-conducting coil body, and the other end of the heating coil water inlet pipe elbow penetrating the pipe wall of the water inlet manifold and sealed together with the sealed pipe cavity of the water inlet pipe bundle manifold. It is formed by sealing and welding the water supply line of the heating coil together to form a connecting channel for the water inlet pipe bundle, thus forming a conical spiral metal coil circulating water inlet pipe loop.

[0008] The circulating water heat exchanger for utilizing waste heat from associated gas emission flares described above, wherein the conical spiral heat-conducting coil body is a conical spiral heat-conducting coil assembly with a spiral vertical conical cylindrical structure formed by winding and bending 1-8 heat-conducting tubes connected in a continuous and sealed manner. The heat-conducting tubes of the conical spiral heat-conducting coil body are heat-conducting coils made of any one of stainless steel tubes, alloy steel tubes, and silicon carbide ceramic heat exchange tubes; the vertical taper of the outer body of the conical spiral heat-conducting coil body is 1° to 8°.

[0009] The aforementioned circulating water heat exchanger for utilizing waste heat from associated gas emission flares comprises a metal heat-conducting coil outlet pipe bundle, wherein the fluid steel pipe of the metal heat-conducting coil body is directly bent into a bend, and the bend is connected to the upper end of the outlet pipe bundle vertical connecting pipe assembly, replacing the bend of the heating coil; the fluid steel pipe of the metal heat-conducting coil body of the outlet pipe bundle vertical connecting pipe assembly is directly bent into a bend and welded to the outlet water collection pipe, replacing the bend of the outlet pipe bundle vertical connecting pipe.

[0010] In the aforementioned circulating water heat exchanger for utilizing waste heat from associated gas emission flares, the supporting connecting ribs are any one of the following: metal square steel sections, metal round steel sections, or metal steel pipe sections. These supporting connecting ribs are composite pad structures welded into the gaps between the turns of the metal heat-conducting coil, serving as inter-turn support and isolation, and coil shaping and reinforcement.

[0011] The circulating water heat exchanger for utilizing waste heat from associated gas emission flares described above, wherein the annular heat-conducting coil support base is made of any one of stainless steel plate, alloy steel plate, or high-temperature resistant steel plate, and the annular heat-conducting coil support base is a horizontally welded structure welded to the bottom of the conical spiral heat-conducting coil body.

[0012] The circulating water heat exchanger for waste heat utilization of associated gas emission flares mentioned above includes a coil straightening and positioning device comprising an arc-shaped support connecting steel plate, a body interconnecting plate, and a three-dimensional connecting support steel plate. The inner end of the body interconnecting plate is connected to the arc-shaped support connecting steel plate, and the outer end is connected to the three-dimensional connecting support steel plate. The three-dimensional connecting support steel plate is embedded in the refractory and heat-insulating layer of the flare cylinder. The arc-shaped support connecting steel plate is welded to the conical spiral heat-conducting coil body.

[0013] The aforementioned circulating water heat exchanger for utilizing waste heat from associated gas flare combustion includes an outlet water collection pipe connected to the outlet water bundle vertical pipe group. Several parallel connection holes are made in the pipe wall of the outlet water collection pipe. The metal heat-conducting fluid pipes of the parallel outlet water bundle vertical pipe group are inserted into the connection holes, and their openings are sequentially penetrated and welded to the pipe wall of the outlet water collection pipe. The outer end of the outlet water collection pipe is sealed by a screen cover, and the inner end is welded to the return water pipeline to form an outlet water fluid medium circulation loop.

[0014] In the aforementioned circulating water heat exchanger for utilizing waste heat from associated gas flare combustion, the inlet water bundle manifold connected to the circulating water inlet tube bundle of the metal heat-conducting coil has several parallel connection holes on its pipe wall. The bottom openings of the metal heat-conducting fluid pipes with parallel heating coil inlet water pipe elbows are inserted into the connection holes and sequentially penetrated and welded to the pipe wall of the inlet water bundle manifold. The outer end of the inlet water bundle manifold is sealed with a screen cap, and the inner end is welded to the inlet water pipeline to form an inlet water fluid medium circulation loop.

[0015] The circulating water heat exchanger for utilizing waste heat from associated gas flare combustion described above has a flare body consisting of a steel plate cylindrical outer body formed by rolling and welding steel plates, with a fire-resistant and heat-insulating layer lining the inner body. The bottom of the flare body is welded with an installation and fixing flange, and a detection manhole cover is installed on the flare body located below the heat-conducting coil support base tray.

[0016] When using this invention, according to design requirements and actual needs, for existing associated gas flare cylinders, the new circulating water heat exchanger for utilizing the waste heat of associated gas flare combustion is directly installed inside the associated gas flare cylinder. The associated gas flare combustion nozzle is connected to the associated gas delivery pipeline, and the heating coil supply water pipeline and return water pipeline are connected. At the same time as the associated gas flare combustion in the oilfield, the fluid medium circulation system composed of the conical spiral heat-conducting coil body, the heating coil rotary pipe elbow, the outlet pipe bundle vertical connecting pipe group, and the heating coil supply water pipeline and return water pipeline installed in the flare cylinder of this new circulating water heat exchanger can conduct and absorb the heat energy of associated gas flare combustion into the new circulating water heat exchanger. The circulating water outlet temperature of the circulating water heat exchanger can reach 80-94℃, and the circulating water is output for heat energy reuse.

[0017] Because this utility model adopts the above-mentioned technical solution, the fluid medium circulation system set inside the flare tube, based on the principle of flare flame baking and thermal radiation, designs a conical spiral-shaped conical heat-conducting coil heat exchanger device with a large heating area and high heat exchange efficiency. Its heat-conducting coil has a conical spiral-shaped heat-conducting coil assembly structure that is larger at the bottom and smaller at the top. The pipe openings at both ends of the heat-conducting coil assembly form the inlet and outlet water flow channels through the heating coil rotary pipe elbow, the outlet pipe bundle vertical connecting pipe assembly, and the return water pipeline, forming a closed-loop circulation circuit, realizing the effective utilization of associated gas flare heat energy through the hot water circulation heat exchanger. Specifically, this application utilizes the combustion heat energy of the associated gas emission flare to directly radiate and bake the heat-conducting coil assembly, causing the tube wall of the heat-conducting coil assembly to heat up rapidly and directly heat the circulating water flowing inside the tube, achieving rapid heating and heat exchange circulation, and achieving comprehensive application effects such as recovering and reusing flare heat energy, energy saving and consumption reduction, environmental protection, and carbon emission reduction. It effectively solves the problem of reducing waste and utilizing heat energy from associated gas flares in oil fields. Actual operation tests have also shown that it has advantages such as a novel and practical overall structure, high absorption and heat exchange efficiency of associated gas flare combustion heat, and ease of use. It is suitable for associated gas treatment, waste heat recovery, and industrial energy-saving scenarios in oilfield extraction, petroleum refining, and other applications.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the specific structure of an embodiment of the present utility model.

[0021] Figure 2 yes Figure 1 The right-side enlarged structural diagram of the connection between the outlet pipe bundle vertical connecting pipe group and the return water pipeline in the embodiment.

[0022] Figure 3 yes Figure 1 The left-side enlarged structural diagram of the connection between the heating coil inlet pipe elbow and the inlet pipe bundle manifold and the heating coil water supply line in the embodiment.

[0023] Figure 4 yes Figure 1 An enlarged cross-sectional view of the heat-conducting coil support tray in the embodiment, shown in the AA direction.

[0024] Figure 5 yes Figure 1 An enlarged structural diagram of part B in the embodiment.

[0025] Figure 6 yes Figure 1 A schematic cross-sectional view of the embodiment along the CC direction.

[0026] The labels in the attached diagram are as follows: 1-Conical spiral heat-conducting coil body; 101-Supporting connecting plate rib; 2-Metal heat-conducting coil outlet pipe bundle; 201-Heating coil rotary pipe elbow; 202-Outlet pipe bundle vertical connecting pipe assembly; 203-Outlet pipe bundle vertical connecting pipe elbow; 204-Outlet water collection pipe; 205-Return water line; 206-Screen cover end cap; 3-Metal heat-conducting coil circulating water inlet pipe bundle; 301-Heating coil water inlet pipe elbow; 302-Inlet pipe bundle 303 - Heating coil water supply line; 4 - Flare body; 401 - Mounting flange; 402 - Fire-resistant and heat-insulating layer; 403 - Steel plate cylindrical outer body; 404 - Inspection manhole cover; 5 - Associated gas flare combustion nozzle; 6 - Heat-conducting coil support base tray; 7 - Coil straightener; 701 - Arc-shaped support connecting steel plate; 702 - Body interconnecting plate; 703 - Three-dimensional connection support steel plate; 8 - Fire-resistant concrete cylindrical base. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] As attached Figures 1-6As shown, this embodiment includes: a flare cylinder 4, an associated gas flare combustion nozzle 5, a conical spiral heat-conducting coil body 1, an isolation support connecting plate 101, a heat-conducting coil support base tray 6, a coil straightening and positioning device 7, and a refractory concrete cylindrical base 8. The conical spiral heat-conducting coil body 1 consists of a conical spiral heat-conducting coil assembly with one end connected in parallel to the metal heat-conducting coil outlet pipe bundle 2 and the other end connected in parallel to the metal heat-conducting coil inlet pipe bundle 3. Gaskets are welded between the tubes of the conical spiral heat-conducting coil assembly. The top structure of the conical spiral heat-conducting coil assembly is welded with a coil straightening and positioning device 7, and the bottom structure is welded with a heat-conducting coil support base 6. The bottom of the heat-conducting coil support base 6 is connected to the refractory concrete cylindrical base 8 by anchor bolts. The conical spiral heat-conducting coil body 1 is fitted into the inner cavity of the flare tube 4. The external connecting pipe joints of the metal heat-conducting coil water outlet bundle 2 and the metal heat-conducting coil water inlet bundle 3 are both extended and connected to the outside of the flare tube 4.

[0030] Preferred options are listed in the appendix. Figures 1-3 In this embodiment, the metal heat-conducting coil water outlet pipe bundle 2 is composed of a heating coil rotary pipe elbow 201 welded to the top side of the water outlet pipe of the metal heat-conducting coil body 1, and the other end of the heating coil rotary pipe elbow 201 welded to the upper end of the water outlet pipe bundle vertical connecting pipe group 202. The lower end of the water outlet pipe bundle vertical connecting pipe group 202 is welded to the water outlet pipe bundle vertical connecting pipe elbow 203. The other end of the water outlet pipe bundle vertical connecting pipe elbow 203 penetrates the pipe wall of the water outlet collecting pipe, is sealed, and is welded in parallel to the water outlet collecting pipe 204. The sealed cavity of the water outlet collecting pipe 204 and the return water pipe 205 are mutually sealed and welded to form a connecting channel for the return water pipe bundle, thus forming a conical spiral metal coil circulating water outlet pipe loop.

[0031] For further selection, see Appendix. Figures 1-3 In this embodiment, the conical spiral metal coil circulating water inlet pipe bundle 3 is composed of a heating coil water inlet pipe elbow 301 welded to the water outlet of the bottom end of the metal heat-conducting coil body 1, and the other end of the heating coil water inlet pipe elbow 301 penetrates the pipe wall of the water inlet manifold and is sealed and welded in parallel to the sealed cavity of the water inlet pipe bundle collection pipe 302. It is also sealed and welded to the heating coil water supply pipeline 303 to form a connecting channel for the water inlet pipe bundle, thus forming a conical spiral metal coil circulating water inlet pipe loop.

[0032] For example, see Appendix Figure 1 In this embodiment, the conical spiral heat-conducting coil body 1 is a conical spiral heat-conducting coil assembly with a spiral vertical conical cylindrical structure made by winding and bending a fluid steel pipe coil into a whole, consisting of 4 heat-conducting tubes connected in a continuous and sealed manner. The heat-conducting tubes of the conical spiral heat-conducting coil body 1 are alloy steel pipes.

[0033] Specifically, see Appendix Figures 1-2 In this embodiment, the metal heat-conducting coil outlet pipe bundle 2 is made by directly bending the fluid steel pipe of the metal heat-conducting coil body 1 into a bend pipe. The bend pipe is connected to the upper end of the outlet pipe bundle vertical connecting pipe assembly 202 to replace the heating coil bend pipe 201. The bend pipe of the metal heat-conducting coil body 202 is directly bent into a bend pipe and welded to the outlet manifold 204 to replace the outlet pipe bundle vertical connecting pipe bend 203.

[0034] For example, see Appendix Figure 1 The supporting connecting rib 101 described in this embodiment is a supporting connecting rib made of metal round steel segments.

[0035] For further details, please see the appendix. Figure 1 , Figure 4 In this embodiment, the heat-conducting coil support base tray 6 is an annular base tray made of alloy steel plate. The heat-conducting coil support base tray 6 is a horizontally welded structure welded to the bottom of the conical spiral heat-conducting coil body.

[0036] Preferred options are listed in the appendix. Figure 1 , Figures 5-6 The coil straightening and positioning device 7 described in this embodiment includes an arc-shaped support connecting steel plate 701, a body interconnecting plate 702, and a three-dimensional connecting support steel plate 703. The inner end of the body interconnecting plate 702 is connected to the arc-shaped support connecting steel plate 701, and the outer end is connected to the three-dimensional connecting support steel plate 703. The three-dimensional connecting support steel plate 703 is embedded in the inner lining refractory heat insulation layer 402 of the flare tube 4, and the arc-shaped support connecting steel plate 701 is welded to the conical spiral heat-conducting coil body 1.

[0037] For further optimization, see the appendix. Figure 1 In this embodiment, the vertical taper a of the outer body of the conical spiral heat-conducting coil 1 is 1.5°.

[0038] For further selection, see Appendix. Figures 1-2 In this embodiment, the outlet pipe bundle vertical connecting pipe group 202 is connected to the outlet manifold 204, which has several parallel connecting holes on the pipe wall. The metal heat-conducting fluid pipes of the parallel outlet pipe bundle vertical connecting pipe group 202 are inserted into the connecting holes and sequentially penetrated and welded to the pipe wall of the outlet manifold 204. The outer end of the outlet manifold 204 is sealed by the screen cover end cap 206, and the inner end is welded to the return water pipeline 205 to form an outlet fluid medium circulation loop.

[0039] For further details, see the appendix. Figure 1 , Figure 3In this embodiment, the inlet manifold 302 connected to the metal heat-conducting coil circulating water inlet pipe bundle 3 has several parallel connection holes on its pipe wall. The bottom openings of the metal heat-conducting fluid pipes of the parallel heating coil water inlet pipe elbows 301 are inserted into the connection holes and sequentially penetrated and welded to the pipe wall of the inlet manifold 302. The outer end of the inlet manifold 302 is sealed with a screen cover 206, and the inner end is welded to the inlet pipe line 303 to form an inlet fluid medium circulation loop.

[0040] Preferred options are listed in the appendix. Figure 1 In this embodiment, the flare tube 4 is composed of a steel plate cylindrical outer body 403 formed by steel plate roll welding, and a fire-resistant heat insulation layer 402 is lined inside the body. The bottom of the flare tube 4 is welded with an installation and fixing flange 401, and a detection manhole cover 404 is installed on the flare tube located under the heat conduction coil support base tray 6.

[0041] The above is merely one embodiment. Any other technical features and solutions derived by adding components, making equivalent substitutions, and making partial improvements without creative effort by those skilled in the art are all within the scope of protection of this utility model patent.

Claims

1. A circulating water heat exchanger for utilizing waste heat from associated gas emission flares, comprising a flare body (4) and associated gas flare combustion nozzles (5), characterized in that, It also includes a conical spiral heat-conducting coil body (1), isolation support connecting ribs (101), heat-conducting coil support base tray (6), coil straightening and positioning device (7), and refractory concrete cylindrical base (8). The conical spiral heat-conducting coil body (1) consists of one end of a conical spiral heat-conducting coil assembly connected in parallel to the metal heat-conducting coil outlet pipe bundle (2) and the other end connected in parallel to the metal heat-conducting coil inlet pipe bundle (3). Isolation support connecting ribs (101) are sandwiched and welded in the gaps between the tubes of the conical spiral heat-conducting coil assembly. The top structure of the conical spiral heat-conducting coil assembly is welded with a coil straightening and positioning device (7), and the bottom structure is welded with a heat-conducting coil support base (6). The bottom of the heat-conducting coil support base (6) is connected to the refractory concrete cylindrical base (8) by anchor bolts. The conical spiral heat-conducting coil body (1) is fitted into the inner cavity of the torch cylinder (4). The external connecting pipe joints of the metal heat-conducting coil outlet pipe bundle (2) and the external connecting pipe joints of the metal heat-conducting coil inlet pipe bundle (3) are extended and connected to the outside of the torch cylinder (4).

2. A circulating water heat exchanger for utilizing waste heat from associated gas emission flares according to claim 1, characterized in that, The metal heat-conducting coil outlet pipe bundle (2) is composed of a heating coil rotary pipe elbow (201) welded to the outlet pipe opening of the metal heat-conducting coil top side of the conical spiral heat-conducting coil body (1), and the other end of the heating coil rotary pipe elbow (201) welded to the upper end of the outlet pipe bundle vertical connecting pipe group (202). The outlet pipe bundle vertical connecting pipe group (202) is welded to the lower end of the outlet pipe bundle vertical connecting pipe elbow (203). The other end of the outlet pipe bundle vertical connecting pipe elbow (203) penetrates the pipe wall of the outlet water collection pipe and is sealed and welded to the outlet water collection pipe (204). The sealed pipe cavity of the outlet water collection pipe (204) and the return water line (205) are sealed and welded to each other to form a connecting channel of the return water pipe bundle, forming a conical spiral metal coil circulating outlet pipe loop. The conical spiral metal coil circulating water inlet pipe bundle (3) is composed of a heating coil water inlet pipe elbow (301) welded to the water outlet of the bottom side of the metal heat-conducting coil body (1), and the other end of the heating coil water inlet pipe elbow (301) penetrates the pipe wall of the water inlet manifold and is sealed and welded to the sealed cavity of the water inlet pipe bundle collection pipe (302) and the heating coil water supply line (303) to form a connecting channel for the water inlet pipe bundle.

3. A circulating water heat exchanger for utilizing waste heat from associated gas emission flares according to claim 1, characterized in that, The conical spiral heat-conducting coil body (1) is a conical spiral heat-conducting coil assembly with a spiral vertical conical cylindrical structure, which is formed by winding and bending 1-8 heat-conducting tubes connected in a continuous and sealed manner. The heat-conducting tubes of the conical spiral heat-conducting coil body (1) are heat-conducting coils made of any one of stainless steel tubes, alloy steel tubes, and silicon carbide ceramic heat exchange tubes. The vertical taper (a) of the outer body of the conical spiral heat-conducting coil body (1) is 1° to 8°.

4. A circulating water heat exchanger for utilizing waste heat from associated gas emission flares according to claim 1, characterized in that, The metal heat-conducting coil outlet pipe bundle (2) is a bend made directly from the fluid steel pipe of the metal heat-conducting coil body (1) of the conical spiral heat-conducting coil. The bend is connected to the upper end of the outlet pipe bundle vertical connecting pipe assembly (202) to replace the heating coil bend (201). The metal heat-conducting coil of the outlet pipe bundle vertical connecting pipe assembly (202) is directly bent into a bend and welded to the outlet collection pipe (204) to replace the outlet pipe bundle vertical connecting pipe bend (203).

5. A circulating water heat exchanger for utilizing waste heat from associated gas emission flares according to claim 1, characterized in that, The supporting connecting plate reinforcement (101) is any one of the following: metal square steel segment, metal round steel segment, or metal steel pipe section.

6. A circulating water heat exchanger for utilizing waste heat from associated gas emission flares according to claim 1, characterized in that, The annular heat-conducting coil support base tray (6) is made of any of the following materials: stainless steel plate, alloy steel plate, and high-temperature resistant steel plate. The annular heat-conducting coil support base tray (6) is a horizontally welded structure welded to the bottom of the conical spiral heat-conducting coil body (1).

7. A circulating water heat exchanger for utilizing waste heat from associated gas emission flares according to claim 1, characterized in that, The coil straightening and positioning device (7) includes an arc-shaped support connecting steel plate (701), a body interconnecting plate (702), and a three-dimensional connecting support steel plate (703). The inner end of the body interconnecting plate (702) is connected to the arc-shaped support connecting steel plate (701), and the outer end is connected to the three-dimensional connecting support steel plate (703). The three-dimensional connecting support steel plate (703) is embedded in the inner lining refractory heat insulation layer (402) of the flare tube (4). The arc-shaped support connecting steel plate (701) is welded to the conical spiral heat-conducting coil body (1).

8. A circulating water heat exchanger for utilizing waste heat from associated gas emission flares according to claim 2, characterized in that, The outlet pipe bundle vertical connecting pipe group (202) is connected to an outlet manifold (204) with several parallel connecting holes on the pipe wall. The metal heat-conducting fluid pipes of the parallel outlet pipe bundle vertical connecting pipe group (202) are inserted into the connecting holes and sequentially penetrated and welded to the pipe wall of the outlet manifold (204). The outer end of the outlet manifold (204) is sealed by a screen cover head (206), and the inner end is welded to a return water pipeline (205) to form an outlet fluid medium circulation loop.

9. A circulating water heat exchanger for utilizing waste heat from associated gas emission flares according to claim 1, characterized in that, The inlet manifold (302) connected to the metal heat-conducting coil circulating water inlet pipe bundle (3) has several parallel connection holes on its pipe wall. The bottom openings of the metal heat-conducting fluid pipes of the parallel heating coil water inlet pipe elbows (301) are inserted into the connection holes and sequentially penetrated and welded to the pipe wall of the inlet manifold (302). The outer end of the inlet manifold (302) is sealed with a screen cap (206), and the inner end is welded to the water inlet pipeline (303) to form an inlet fluid medium circulation loop.

10. A circulating water heat exchanger for utilizing waste heat from associated gas emission flares according to claim 1, characterized in that, The torch tube (4) is composed of a steel plate cylindrical outer body (403) formed by steel plate roll welding, and a fire-resistant heat insulation layer (402) is lined inside the body. The bottom of the torch tube (4) is welded with an installation and fixing flange (401), and a detection manhole cover (404) is installed on the torch tube located below the heat conduction coil support base tray (6).

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