Electric heating organic heat transfer material furnace

Abstract

The utility model discloses an electric heating organic heat carrier furnace which comprises an electric heater (1), a closed shell (2), a heat exchange tube (3) and heat conduction liquid (4). The electric heater (1) comprises a plurality of electric heating elements (1-1), the electric heating elements (1-1) are horizontally installed in the shell (2) and connected with a power source, the heat exchange tube (3) is horizontally installed in the shell (2), one end of the heat exchange tube (3) penetrates through the wall of the shell (2) to be connected with the heat exchange medium inlet header (5), and the other end of the heat exchange tube (3) penetrates through the wall of the shell (2) to be connected with the heat exchange medium outlet header (5). The other end of each heat exchange pipe (3) penetrates through the wall portion of the shell (2) to be connected with a heat exchange medium outlet collecting pipe (6), an inner cavity of the shell (2) is filled with heat conduction liquid (4), and the electric heating elements (1-1) and the heat exchange pipes (3) are immersed in the heat conduction liquid (4). The heat exchange medium is indirectly heated, and scaling is not prone to occurring in the heat exchange pipe.

Description

Technical Field

[0001] The utility model relates to an organic heat carrier furnace, in particular to an electric heating organic heat carrier furnace used in purification industries such as natural gas. Background Art

[0002] Oil-fired and gas-fired organic heat carrier furnaces are widely used for heating, drying or softening in the chemical industry and other fields. Oil-fired and gas-fired organic heat carrier furnaces all use direct flame heating. In natural gas and other purification industries, they are mainly used to heat natural gas before purification. They have the following disadvantages in actual use: (1) Oil-fired and gas have NOX and SO2 emissions, which are always polluting and put great pressure on environmental protection; (2) Direct flame heating makes it easy for the wall temperature of natural gas before purification to be too high in the heat exchange tube, resulting in serious scaling, easy tube burst and difficult maintenance. Summary of the invention

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an electrically heated organic heat carrier furnace which can avoid NOX and SO2 pollution, indirectly heat the heat exchange medium and is not prone to scaling in the heat exchange tube.

[0004] In order to solve the above technical problems, the utility model adopts such an electric heating organic heat carrier furnace, including an electric heater, a sealed shell, a heat exchange tube and a heat transfer fluid; the electric heater includes a plurality of electric heating elements, the plurality of electric heating elements are horizontally installed in the shell, the plurality of electric heating elements are connected to a power supply, the heat exchange tube is horizontally installed in the shell, and one end of the heat exchange tube passes through the shell wall to be connected to the heat exchange medium inlet header, and the other end of the heat exchange tube passes through the shell wall to be connected to the heat exchange medium outlet header, the inner cavity of the shell is filled with the heat transfer fluid, and the plurality of electric heating elements and the heat exchange tube are immersed in the heat transfer fluid.

[0005] As a preferred embodiment of the utility model, the electric heater also includes a junction box, the electric heating element is an electric heating rod, the shell has an opening and a cover plate closing the opening, one end of the plurality of electric heating elements is connected to a power source through the junction box and a cable, and the other end of the plurality of electric heating elements passes through the cover plate and is located inside the shell.

[0006] As a preferred embodiment of the utility model, a temperature detection sensor is provided in the inner cavity of the shell, and the temperature detection sensor and the electric heater are electrically connected to the central control unit of the electrically heated organic heat carrier furnace. An exhaust port is provided at the top of the shell, and a sewage outlet is provided at the bottom of the shell.

[0007] After adopting the above structure, the utility model has the following beneficial effects:

[0008] The utility model heats the heat transfer fluid by energizing the electric heating rod, and then indirectly heats the heat transfer medium in the heat exchange tube through the heat transfer fluid, which makes it difficult for the heat exchange tube to scale, and avoids the disadvantage of easy scaling in the heat exchange tube caused by direct flame heating.

[0009] The temperature of the heat transfer fluid of the utility model is automatically controlled by a temperature detection sensor, thereby preventing the wall temperature of the heat exchange tube from being too high or overheating.

[0010] The utility model adopts electric heating, does not need to consider the problems of NOX and SO2 emission, is easy to maintain, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0012] Figure 1 The utility model is a structural schematic diagram of an electrically heated organic heat carrier furnace. Implementation

[0013] See also Figure 1 An electrically heated organic heat carrier furnace shown in the figure comprises an electric heater 1, a sealed shell 2, a heat exchange tube 3 and a heat transfer fluid 4; the electric heater 1 comprises a plurality of electric heating elements 1-1, the plurality of electric heating elements 1-1 are horizontally fixedly installed in the shell 2, the plurality of electric heating elements 1-1 are connected to a power supply, the heat exchange tube 3 is horizontally fixedly installed in the shell 2, and one end of the heat exchange tube 3 passes through the wall of the shell 2 to be connected to a heat exchange medium inlet header 5, and the other end of the heat exchange tube 3 passes through the wall of the shell 2 to be connected to a heat exchange medium outlet header 6. The heat exchange medium of the utility model is preferably natural gas, and of course other media may also be used. The inner cavity of the shell 2 is filled with the heat transfer fluid 4, and the heat transfer fluid 4 is an organic heat carrier, such as heat transfer oil. The plurality of electric heating elements 1-1 and the heat exchange tube 3 are immersed in the heat transfer fluid 4.

[0014] As a preferred embodiment of the present invention, Figure 1 As shown, the electric heater 1 also includes a junction box 1-2, the electric heating element 1-1 is an electric heating rod, the shell 2 has an opening and a cover plate 2-1 that closes the opening, one end of the plurality of electric heating elements 1-1 is connected to a power source through the junction box 1-2 and a cable, and the other end of the plurality of electric heating elements 1-1 passes through the cover plate 2-1 and is located in the shell 2.

[0015] As a preferred embodiment of the present invention, Figure 1As shown, a temperature detection sensor 7 is provided in the inner cavity of the shell 2. The temperature detection sensor 7 and the electric heater 1 are electrically connected to the central control unit of the electrically heated organic heat carrier furnace. The central control unit usually adopts an industrial computer, etc., which is not shown in the figure. An exhaust port 2-2 is provided at the top of the shell 2, and a sewage outlet 2-3 is provided at the bottom of the shell 2.

[0016] After trial, the utility model indirectly heats the heat exchange medium in the heat exchange tube through the heat transfer fluid, avoiding the disadvantage of easy scaling caused by direct heating, and the temperature of the heat transfer fluid is automatically controlled by the temperature detection sensor, avoiding the problem of excessive temperature of the heat exchange tube wall. The utility model adopts electric heating, does not need to consider the problems of NOX and SO2 emissions, is simple to maintain, has a wide range of applications, and has achieved good practical effects.

Claims

1. An electrically heated organic heat carrier furnace, characterized in that: The invention comprises an electric heater (1), a sealed shell (2), a heat exchange tube (3) and a heat transfer fluid (4); the electric heater (1) comprises a plurality of electric heating elements (1-1), the plurality of electric heating elements (1-1) are horizontally mounted in the shell (2), the plurality of electric heating elements (1-1) are connected to a power source, the heat exchange tube (3) is horizontally mounted in the shell (2), one end of the heat exchange tube (3) passes through the wall of the shell (2) and is connected to a heat transfer medium inlet header (5), the other end of the heat exchange tube (3) passes through the wall of the shell (2) and is connected to a heat transfer medium outlet header (6), the inner cavity of the shell (2) is filled with the heat transfer fluid (4), and the plurality of electric heating elements (1-1) and the heat exchange tube (3) are immersed in the heat transfer fluid (4).

2. The electrically heated organic heat carrier furnace according to claim 1, characterized in that: The electric heater (1) further comprises a junction box (1-2), the electric heating element (1-1) is an electric heating rod, the shell (2) has an opening and a cover plate (2-1) closing the opening, one end of the plurality of electric heating elements (1-1) is connected to a power source via the junction box (1-2) and a cable, and the other end of the plurality of electric heating elements (1-1) passes through the cover plate (2-1) and is located inside the shell (2).

3. The electrically heated organic heat carrier furnace according to claim 1 or 2, characterized in that: A temperature detection sensor (7) is provided in the inner cavity of the shell (2); the temperature detection sensor (7), the electric heater (1) and a central control unit of an electrically heated organic heat carrier furnace are electrically connected; an exhaust port (2-2) is provided at the top of the shell (2); and a sewage outlet (2-3) is provided at the bottom of the shell (2).

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