Heater device for heating working medium by using electric energy instead of fuel

Abstract

The invention belongs to the technical field of industrial equipment, namely heating furnaces, particularly relates to a heater device for heating a working medium by using electric energy instead of fuel, and aims to solve the problem that a traditional heating furnace uses fuel combustion and flame to directly heat the working medium flowing in a pipe. The equipment process has the problems of high carbon emission, low heat efficiency, low electrification rate and the like. According to the scheme, the device comprises a heater shell, a working medium mixture heating section, a working medium mixture heating standby section and a steam heating section; the heater shell is vertically arranged, a high-temperature circulating nitrogen inlet is formed in the top of the heater shell, a low-temperature circulating nitrogen outlet is formed in the bottom of the heater shell, and the working medium mixture heating section, the working medium mixture heating standby section and the steam heating section are sequentially arranged in the heater shell from top to bottom. According to the scheme, new energy electric power or valley electricity is used for heating the magnesite bricks for heat storage, the fan drives circulating nitrogen to replace heat stored in the magnesite bricks, and high-temperature nitrogen passes through the working medium heater to heat a working medium to reach preset parameters.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial equipment-heating furnaces, and in particular relates to a heating device which utilizes electric energy to replace fuel to heat a working medium. Background Art

[0002] In petroleum refining enterprises, traditional working fluid heating furnaces use fuel combustion, and the flame directly heats the flowing working fluid in the tube. This type of equipment and process has problems such as large carbon emissions, low thermal efficiency, and low electrification rate, which does not meet the requirements of low carbon and electrification rate of related equipment. At the same time, due to the particularity of the working fluid being flammable, explosive, and easy to coke, it is difficult to use resistance / electromagnetic / electrode and other methods for electrification transformation. Summary of the invention

[0003] The purpose of the present invention is to solve the problems of traditional tubular heating furnaces that use fuel combustion and flames to directly heat the flowing working fluid in the tube. This type of equipment and process has problems such as large carbon emissions, low thermal efficiency, and low electrification rate. The present invention proposes a heater device that uses electricity instead of fuel to heat the working fluid.

[0004] A heater device for heating a working medium by using electric energy instead of fuel, comprising a heater shell, a working medium mixture heating section, a working medium mixture heating standby section and a steam heating section;

[0005] The heater shell is arranged vertically, a high-temperature circulating nitrogen inlet is arranged at the top of the heater shell, a low-temperature circulating nitrogen outlet is arranged at the bottom of the heater shell, and a working fluid mixture heating section, a working fluid mixture heating standby section, and a steam heating section are arranged in the heater shell in sequence from top to bottom;

[0006] The inlet end of the working fluid mixture heating section is connected to a working fluid mixture inlet pipe passing through the outer wall of the heater shell;

[0007] In the initial working stage of the device, the outlet end of the working fluid mixture heating section is connected to the early working condition working fluid outlet pipeline passing through the outer wall of the heater shell; only the working fluid mixture heating section participates in the working fluid heating work;

[0008] When the subsequent device needs to increase the working fluid parameters, the inlet end of the working fluid mixture heating standby section is connected to the later working condition working fluid inlet pipeline connecting it to the working fluid mixture heating section, and the outlet end of the working fluid mixture heating standby section is connected to the later working condition working fluid outlet pipeline passing through the outer wall of the heater shell, and the mixture heating standby section works together with the working fluid mixture heating section to improve the working fluid parameters.

[0009] Furthermore, a hanging device is hung below the ventilation beam inside the heater shell, and the working fluid mixture heating section, the working fluid mixture heating standby section and the steam heating section are installed on the hanging device.

[0010] Furthermore, the outlet end of the working medium outlet pipeline of the early working condition and the outlet end of the working medium outlet pipeline of the late working condition are both connected to the external reactor through the working medium mixture outlet pipeline.

[0011] Furthermore, a plurality of manholes are provided on the heater housing.

[0012] Furthermore, the low-temperature circulating nitrogen outlet, the nitrogen circulating fan, the solid heat storage module and the high-temperature circulating nitrogen inlet are connected in sequence.

[0013] Beneficial effects:

[0014] This solution upgrades the traditional heating furnace to electrification, using surplus electricity to replace the heater that burns fuel to heat the working fluid, using unstable wind / solar new energy or cheap valley electricity to heat the magnesium bricks for heat storage, using fans to drive circulating nitrogen to replace the heat storage in the magnesium bricks, and passing high-temperature nitrogen through the working fluid heater to heat the working fluid to the predetermined parameters.

[0015] The heater uses electricity instead of fuel to heat the working fluid, introduces a new design concept, and uses circulating nitrogen as an intermediate energy carrier to replace flame heating.

[0016] The heater of the present invention can be equipped with a solid energy storage device, which can absorb wind / solar new energy or valley electricity without using fuel and emitting no waste heat flue gas into the atmosphere, thus conforming to the development direction of clean and low-carbon development.

[0017] The heater of the present invention increases the electrification of industrial heating equipment.

[0018] The heater of the present invention has high thermal efficiency and no waste heat is discharged to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of a heater device for heating a working medium by using electric energy instead of fuel according to the present invention;

[0020] Figure 2 is a side view of the heater of the present invention.

[0021] Figure 3 This is a schematic diagram of a hydrofining process used in the petroleum refining industry in accordance with an embodiment of the present invention;

[0022] In the figure: 1. High-temperature circulating nitrogen inlet; 2. Working fluid mixture heating section; 3. Working fluid mixture heating standby section; 4. Steam heating section; 5. Low-temperature circulating nitrogen outlet; 6. Suspension device; 7. Working fluid mixture inlet; 8. Working fluid mixture outlet; 9. Manhole; 10. Heater shell; 11. Working fluid outlet pipeline for later working conditions; 12. Working fluid outlet pipeline for early working conditions; 13. Working fluid outlet pipeline for early working conditions; 14. Electric heating system; 15. External reactor; 16. Solid heat storage module; 17. Nitrogen circulation fan. DETAILED DESCRIPTION

[0023] Specific implementation method 1: A heater device for heating a working medium by using electric energy instead of fuel, comprising a heater housing 10, a working medium mixture heating section 2, a working medium mixture heating standby section 3 and a steam heating section 4;

[0024] The heater housing 10 is arranged vertically, a high-temperature circulating nitrogen inlet 1 is arranged at the top of the heater housing 10, a low-temperature circulating nitrogen outlet 5 is arranged at the bottom of the heater housing 10, and a working fluid mixture heating section 2, a working fluid mixture heating standby section 3, and a steam heating section 4 are arranged in the heater housing 10 in sequence from top to bottom;

[0025] The inlet end of the working fluid mixture heating section 2 is connected to a working fluid mixture inlet pipe 7 that passes through the outer wall of the heater housing 10;

[0026] In the initial working stage of the device, the outlet end of the working fluid mixture heating section 2 is connected to the early working condition working fluid outlet pipeline 12 that passes through the outer wall of the heater shell 10; only the working fluid mixture heating section 2 participates in the working fluid heating work;

[0027] When the subsequent device needs to increase the working fluid parameters, the inlet end of the working fluid mixture heating standby section 3 is connected to the later working condition working fluid inlet pipeline 13 connecting it to the working fluid mixture heating section 2, and the outlet end of the working fluid mixture heating standby section 3 is connected to the later working condition working fluid outlet pipeline 11 passing through the outer wall of the heater shell 10. The mixture heating standby section 3 works together with the working fluid mixture heating section 2 to improve the working fluid parameters.

[0028] Specific implementation method 2: A heater device that uses electric energy instead of fuel to heat the working fluid, a hanging device 6 is hung under the ventilation beam inside the heater shell 10, and the working fluid mixture heating section 2, the working fluid mixture heating standby section 3 and the steam heating section 4 are installed on the hanging device 6.

[0029] Other implementations are the same as the first specific implementation.

[0030] Specific implementation method three: A heater device that uses electrical energy instead of fuel to heat the working medium, wherein the outlet end of the early working condition working medium outlet pipeline 12 and the outlet end of the late working condition working medium outlet pipeline 11 are both connected to the external reactor 15 through the working medium mixture outlet pipeline 8.

[0031] In this embodiment: the working fluid mixture passes through the working fluid mixture outlet pipe and then goes to the external reactor for reaction.

[0032] Other implementations are the same as the first specific implementation.

[0033] Specific implementation method 4: A heater device that uses electric energy instead of fuel to heat a working medium, wherein a plurality of manholes 9 are provided on the heater housing 10 .

[0034] In this embodiment: a plurality of manholes are provided on the heater housing, and the manholes are used for workers to enter for maintenance.

[0035] Other implementations are the same as the first specific implementation.

[0036] Specific embodiment 5: A heater device that uses electric energy instead of fuel to heat the working medium, wherein the low-temperature circulating nitrogen outlet 5, the nitrogen circulating fan 17, the solid heat storage module 16 and the high-temperature circulating nitrogen inlet 1 are connected in sequence.

[0037] In this embodiment: the over-electric heating system heats the solid heat storage module, stores energy, and heats the solid heat storage device; the nitrogen circulation fan blows the low-temperature circulating nitrogen through the solid heat storage module, takes away energy, and heats the low-temperature circulating nitrogen into high-temperature circulating nitrogen; the high-temperature circulating nitrogen enters the heater through the heater circulating nitrogen inlet pipe.

[0038] Other implementations are the same as the first specific implementation.

[0039] Principle of the invention:

[0040] Unstable wind / light / valley electricity heats the solid energy storage module and stores energy. The solid energy storage module heats the cold circulating gas to hot circulating gas. The circulating gas is driven by the circulating fan and flows through the heating surface to heat the working fluid. The circulating gas returns to the cycle to realize energy utilization, achieving the goal of using electricity instead of fuel to heat the working fluid.

[0041] See the examples Figure 3 To illustrate this embodiment, the working fluid mixture heating section is connected to the working fluid mixture inlet pipeline, the previous working condition working fluid outlet pipeline, and the working fluid mixture outlet, and the working fluid mixture heating standby section is temporarily not connected to the working fluid mixture inlet pipeline and the working fluid mixture outlet pipeline. The working fluid mixture inlet is used to discharge the heated working fluid, and the working fluid mixture outlet is used to discharge the heated working fluid.

[0042] When the catalyst activity in the subsequent equipment decreases and the working fluid temperature increases, the working fluid outlet pipeline of the previous working condition is removed, and the working fluid outlet pipeline of the later working condition is connected to the working fluid mixture heating standby section and the working fluid mixture outlet pipeline.

[0043] This device is different from traditional tubular heating furnaces. It introduces a new design concept, combines solid energy storage technology, uses cheap valley electricity or difficult-to-consume new energy electricity, and uses circulating nitrogen as an intermediate medium to solve the problems of traditional tubular heating furnaces such as high carbon emissions, low thermal efficiency, and low electrification rate, and meets the requirements for low carbon and electrification rates of related equipment.

[0044] In the system, valley electricity / wind and solar energy new energy electricity is used to heat the solid heat storage module through an electric heating system to store energy and heat the solid heat storage device; the nitrogen circulation fan blows the low-temperature circulating nitrogen through the solid heat storage module to take away energy and heat the low-temperature circulating nitrogen into high-temperature circulating nitrogen; the high-temperature circulating nitrogen enters the heater through the heater circulating nitrogen inlet pipe, and the high-temperature circulating nitrogen flows through the working fluid mixture heating section to heat the refined oil and hydrogen mixture entering from the refined oil and high-temperature circulating nitrogen inlets to a predetermined parameter, and after the high-temperature nitrogen is cooled, it becomes low-temperature nitrogen and continues to circulate; the heated working fluid is sent to the mixture outlet pipe for catalytic reaction to generate products; for example, after the refined oil and hydrogen mixture is heated, it is sent to the reactor through the refined oil and working fluid mixture outlet pipe to react and generate a bright oil finished product.

Claims

1. A heater device that utilizes electrical energy instead of fuel to heat a working medium, characterized in that: It comprises a heater shell (10), a working fluid mixture heating section (2), a working fluid mixture heating standby section (3) and a steam heating section (4); The heater shell (10) is arranged vertically, a high-temperature circulating nitrogen inlet (1) is provided at the top of the heater shell (10), a low-temperature circulating nitrogen outlet (5) is provided at the bottom of the heater shell (10), and a working fluid mixture heating section (2), a working fluid mixture heating standby section (3), and a steam heating section (4) are arranged in sequence from top to bottom in the heater shell (10); The inlet end of the working fluid mixture heating section (2) is connected to a working fluid mixture inlet pipe (7) passing through the outer wall of the heater shell (10); In the initial working stage of the device, the outlet end of the working fluid mixture heating section (2) is connected to an early working condition working fluid outlet pipe (12) that passes through the outer wall of the heater shell (10); only the working fluid mixture heating section (2) participates in the working fluid heating work; When the subsequent device needs to increase the working fluid parameters, the inlet end of the working fluid mixture heating standby section (3) is connected to a later working condition working fluid inlet pipeline (13) connecting it to the working fluid mixture heating section (2), and the outlet end of the working fluid mixture heating standby section (3) is connected to a later working condition working fluid outlet pipeline (11) passing through the outer wall of the heater shell (10), and the mixture heating standby section (3) works together with the working fluid mixture heating section (2) to increase the working fluid parameters.

2. A heater device for heating a working medium by using electric energy instead of fuel according to claim 1, characterized in that: A hanging device (6) is hung below the ventilation beam inside the heater housing (10), and the working fluid mixture heating section (2), the working fluid mixture heating standby section (3) and the steam heating section (4) are mounted on the hanging device (6).

3. A heater device for heating a working medium by using electric energy instead of fuel according to claim 1, characterized in that: The outlet end of the working medium outlet pipeline (12) for the early working condition and the outlet end of the working medium outlet pipeline (11) for the late working condition are both connected to the external reactor (15) via the working medium mixture outlet pipeline (8).

4. A heater device for heating a working medium by using electric energy instead of fuel according to claim 1, characterized in that: The heater housing (10) is provided with a plurality of manholes (9).

5. The heater device for heating a working medium by using electric energy instead of fuel according to claim 1, characterized in that: The low-temperature circulating nitrogen outlet (5), the nitrogen circulating fan (17), the solid heat storage module (16) and the high-temperature circulating nitrogen inlet (1) are connected in sequence.

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