Coupling heating device

Abstract

The utility model relates to the technical field of new energy, and discloses a coupling heating device. The coupling heating device comprises a shell, an electromagnetic induction heating system, a fuel gas heating system, a heating pipe, a circulating liquid ascending pipe and a circulating liquid descending pipe. According to the coupling heating device, one or two of fuel gas and green electricity can be adopted for heating, traditional energy and green electric power resources are complementarily utilized, transition from fossil fuel to green low-carbon electric power resources is gradually achieved, and the coupling heating device can be widely applied to the field of oil fields and chemical engineering.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, and in particular to a coupling heating device. Background Art

[0002] Heating equipment in oilfields and chemical industries is a crucial component of oil and gas gathering, transportation, storage, and processing. Often fueled by natural gas, heating equipment suffers from low thermal efficiency, high heat loss from flue gas, and environmental pollution caused by emissions of carbon oxides and nitrogen oxides.

[0003] In recent years, with the completion and commissioning of green power generation projects, electricity resources have become "oversupplied" and their utilization rates have been low. Against the backdrop of my country's "dual carbon" development, effectively utilizing green electricity to replace fuels, taking into account the unique characteristics of green power resources, has become a key direction for green development in the oil and chemical industries.

[0004] With declining oil production, existing heating equipment is operating at low loads and exhaust temperatures, posing a significant risk of dew-point corrosion. Green electricity is susceptible to environmental and weather factors and is unstable. Therefore, while retaining the existing gas heating function of the existing heating equipment, we coupled it with green electricity heating. This allows for flexible heating methods tailored to energy availability, ensuring continuous and safe operation of the heating equipment while fully utilizing regional green electricity resources.

[0005] Integrating renewable energy into oilfield and chemical heating fields is an effective means to achieve the "dual carbon" goals, utilize resource advantages, and promote green transformation. Utility Model Content

[0006] The purpose of this utility model is to address the above problems and provide a coupled heating device, which has the advantages of fast heating speed, high energy utilization rate, flexible heating method, etc. At the same time, it can stably control the exhaust temperature, reduce pollutant emissions, and absorb excess green electricity.

[0007] To achieve the above objectives, the present invention provides a coupled heating device, comprising a housing, an electromagnetic induction heating system, a gas heating system, a heating pipe, a circulating liquid riser pipe, and a circulating liquid descender pipe. The housing is connected to the induction heating system via the circulating liquid riser pipe and the circulating liquid descender pipe.

[0008] Optionally, part of the circulating liquid inside the shell flows into the induction heating system through the circulating liquid downcomer to be heated, and the other part is subjected to heat exchange through contact with the gas heating system.

[0009] Optionally, the plurality of circulating liquid ascending pipes and circulating liquid descending pipes are connected to a collecting pipe.

[0010] Optionally, the specifications of the several circulating liquid riser pipes and circulating liquid downcomer pipes are DN40, DN50, DN65, DN80, DN100, DN150, and DN200.

[0011] Optionally, the specifications of the collecting pipe are DN200, DN250, DN300, and DN400.

[0012] Optionally, the plurality of circulating liquid downpipes are connected to the bottom of the shell, and the plurality of circulating liquid uppipes are connected to the upper portion of the shell near where the heating pipes are located.

[0013] Optionally, the circulating fluid is desalted water or heat transfer oil.

[0014] Optionally, the electromagnetic induction heating system includes: a collecting pipe, an induction coil, an insulation layer, and a control system.

[0015] Optionally, the gas heating system includes a burner, a fire tube, a smoke pipe, and a chimney.

[0016] Optionally, the induction coil is characterized in that the induction coil adopts medium and low frequency heating, and the heating frequency is 50 to 2500HZ.

[0017] Optionally, the burner is a low-nitrogen burner.

[0018] The utility model provides a coupled heating device. Compared with the prior art, it has the following advantages:

[0019] (1) Stabilize the exhaust gas temperature of the gas heating system. Use electromagnetic induction heating to fine-tune the exhaust gas temperature to avoid excessively low exhaust gas temperature due to load changes.

[0020] (2) High flexibility. The heating method can be flexibly matched according to the energy supply situation to make full use of energy.

[0021] (3) Green, environmentally friendly, and pollution-free. Reduce the pollution of carbon oxides and nitrogen oxides caused by direct combustion of fuel gas, make full use of green electricity resources, and be clean, environmentally friendly, green and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a main view of a coupled heating device;

[0023] Figure 2 It is a left view of a coupled heating device;

[0024] Figure 3 yes Figure 1 Schematic diagram of the amplified structure of the electromagnetic induction system.

[0025] Figure 4 yes Figure 1Enlarged structural diagram of the gas heating system.

[0026] Description of Reference Numerals

[0027] Figure: 1, shell; 2, electromagnetic induction heating system; 3, gas heating system; 4, heating pipe; 5, circulating liquid riser; 6, circulating liquid downpipe; 201, collecting pipe; 202, insulation layer; 203, induction coil; 204, control system; 301, burner; 302, fire pipe; 303, smoke pipe; 304, chimney; 501, rising pipe insulation layer DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Furthermore, persons of ordinary skill in the art will appreciate that the figures provided herein are for illustration purposes only and are not necessarily drawn to scale.

[0030] In this utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the orientation in the assembled state. "Inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0031] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0032] See the instructions attached Figures 1-4 The coupled heating device shown in FIG. comprises a housing 1, an electromagnetic induction heating system 2, a gas heating system 3, a heating pipe 4, a circulating liquid rising pipe 5, and a circulating liquid descending pipe 6. The housing 1 contains circulating liquid. Figure 4As shown, the gas heating system 3 includes a burner 301, a fire tube 302, a smoke tube 303 and a chimney 304. The fire tube 302 and the smoke tube 303 are arranged in the middle and lower part of the shell 1, below the heating tube 4. The heating tube 4 is arranged in the upper part of the shell 1. The burner 301 and the chimney 304 are arranged in the front part of the shell 1. The shell 1 is connected to the induction heating system 2 through several circulating liquid risers 5 and circulating liquid downcomers 6.

[0033] Furthermore, the specifications of the circulating liquid ascending pipe 5 and the circulating liquid descending pipe 6 are DN40, DN50, DN65, DN80, DN100, DN150, and DN200; the specifications of the collecting pipe are DN200, DN250, DN300, and DN400. The specifications can be selected according to actual needs.

[0034] Furthermore, the circulating fluid uses desalted water and heat transfer oil.

[0035] Furthermore, the burner adopts a low-nitrogen burner.

[0036] Furthermore, several circulating liquid riser pipes 5 and circulating liquid downpipes 6 are connected to the collecting pipe 201. The circulating liquid downpipe 6 is connected to the bottom of the shell 1. The circulating liquid flows into the collecting pipe 201 due to gravity for heating. The circulating liquid riser pipe 5 is connected to the top of the shell 1 near the heating pipe 4. The heated circulating liquid flows back to the shell 1 through the circulating liquid riser pipe 5.

[0037] Furthermore, if Figure 3 As shown, the induction heating system includes a manifold 201 , a heat insulation layer 202 , an induction coil 203 , and a control system 204 .

[0038] Furthermore, the induction heating system can adjust the flow rate of the circulating fluid flowing into the induction heating system for auxiliary heating according to the energy supply through the control system 204. The heating temperature can be flexibly adjusted according to the heating demand, the heat load of the heating equipment can be stabilized, and the exhaust temperature can be adjusted.

[0039] Furthermore, the induction coil adopts medium and low frequency heating, with a heating frequency of 50 to 2500 Hz, and the actual frequency is determined according to the temperature requirement of the heating medium.

[0040] Working Principle: The housing contains a circulating fluid, a heating medium. Fuel is ignited by a burner and combusted within a fire tube, generating a significant amount of heat. This heat heats the circulating fluid, and the resulting flue gases are discharged through a chimney. The heating tubes are immersed in the circulating fluid, exchanging heat with it to raise the temperature of the internal materials. The above process is essentially the same as that of existing heating equipment. The improvement of this embodiment is that a portion of the circulating fluid flows through the bottom circulating fluid downpipe into the induction heating system for induction heating. After electromagnetic induction heating, it returns to the upper portion of the housing through the circulating fluid riser. An insulation layer is provided on the outside of the circulating fluid riser to prevent condensation and backflow of the circulating fluid. This coupled heating device can select the appropriate heating method based on energy availability, gradually replacing natural gas with electricity. This substitution process can gradually reduce fuel consumption, eliminate carbon oxide and nitrogen oxide pollution caused by direct combustion of fuel gas, reduce heat loss caused by large flue gas emissions, and improve energy efficiency. Furthermore, the induction heating system facilitates temperature control, stabilizes the heat load of the heating equipment, improves low exhaust temperature, extends maintenance cycles, and improves the heating equipment's thermal efficiency.

[0041] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coupled heating device, characterized in that: The invention comprises a shell (1), an electromagnetic induction heating system (2), a gas heating system (3), a heating pipe (4), a circulating liquid ascending pipe (5), and a circulating liquid descending pipe (6); the shell (1) is connected to the electromagnetic induction heating system (2) via the circulating liquid ascending pipe (5) and the circulating liquid descending pipe (6), and the circulating liquid in the shell (1) exchanges heat with the gas heating system (3); the electromagnetic induction heating system (2) comprises a collecting pipe (201), a heat insulating layer (202), an induction coil (203), and a control system (204); the gas heating system (3) comprises a burner (301), a fire pipe (302), a smoke pipe (303), and a chimney (304).

2. A coupled heating device according to claim 1, characterized in that: The specifications of the circulating liquid ascending pipe (5) and the circulating liquid descending pipe (6) are DN40, DN50, DN65, DN80, DN100, DN150, and DN200; the specifications of the collecting pipe (201) are DN200, DN250, DN300, and DN400.

3. A coupled heating device according to claim 1, characterized in that: The circulating liquid downpipe (6) is connected to the bottom of the shell (1), and the circulating liquid uppipe (5) is connected to the upper part of the shell (1) near the location of the heating pipe (4).

4. A coupled heating device according to claim 1, characterized in that: The circulating fluid is desalted water and heat transfer oil.

5. The coupled heating device according to claim 1, characterized in that: The induction coil (203) adopts medium-low frequency heating, with a heating frequency of 50 to 2500 Hz.

6. The coupled heating device according to claim 1, characterized in that: The burner (301) is a low-nitrogen burner.

Images