Reactor electric heating device and method

Abstract

The invention relates to the technical field of reactor heating and heat preservation, in particular to reactor electric heating equipment and method.The equipment specifically comprises two heaters arranged in a mirror symmetry mode, each heater comprises a heating shell of a cover-shaped structure, and through grooves are formed in the opposite sides of the heating shells in a penetrating mode; the through grooves in the two heaters jointly form a channel wrapping the reactor after the heaters are combined, and the channel wraps and accommodates all or at least part of the reactor; a heat preservation layer is arranged in the heating shell, a notch is formed in the heat preservation layer to form a heating area communicated with the channel, and an electric heating unit is installed in the heating area. The heater is formed by arranging the two heating shells of the cover-shaped structures in the mirror symmetry mode, the heater can be used for wrapping and containing the reactor and conducting heating and heat preservation on the reactor through the electric heating unit, effective and safe heating of the reactor is achieved, and no pollution is caused to gas in the reactor.

Description

Technical Field

[0001] The present invention relates to the technical field of reactor heating and heat preservation, and particularly to a reactor electric heating device and method. Background Art

[0002] Reactors are usually used in chemical processes that require strict control of the atmosphere and avoidance of contamination, especially those reactions involving gaseous reducing agents. Such reactors are widely used in multiple fields. Since the materials in the reactor cannot be contaminated, and the reduction media introduced into the reactor are carbon monoxide, hydrogen, natural gas, nitrogen, etc., common heating devices such as rotary kilns, pulverized coal burners, hot blast stoves and other direct combustion devices cannot be used to achieve the purpose.

[0003] Therefore, this application proposes a reactor electric heating device and method. Summary of the Invention

[0004] In view of the above technical problems, the present invention overcomes the shortcomings of the prior art and provides a reactor electric heating device and method, forming a heater to wrap and accommodate the reactor for heating and heat preservation, achieving effective and safe heating of the reactor, and having no pollution to the gas in the reactor.

[0005] In a first aspect, the present invention proposes a reactor electric heating device, which specifically includes two heaters arranged symmetrically with mirror images. The heater includes a heating outer shell with a lid-like structure, and through grooves penetrate through the opposite sides of the heating outer shell. The through grooves on the two heaters jointly form a channel for wrapping the reactor after the heaters are combined. This channel wraps and accommodates all or at least part of the reactor; A heat preservation layer is arranged inside the heating outer shell, and the heat preservation layer is provided with a notch to form a heating area communicating with the channel, and an electric heating unit is installed in the heating area.

[0006] Further, the electric heating unit includes a plurality of spiral-shaped heating wires connected to form a circuit, and the heating wires are connected into a circuit through tungsten steel connection terminals and connection copper plates.

[0007] Further, a plurality of heating wires are arranged horizontally and at equal intervals in the heating area.

[0008] Further, the heating wires are spirally wound around the outer wall of an insulating tube, and both ends of the insulating tube are respectively connected to the side wall of the heating outer shell.

[0009] Further, the insulating tube includes a porcelain tube.

[0010] Further, a plurality of porcelain nails are installed on the heating outer shell, and the upper sides of the porcelain nails abut against and support the insulating tube.

[0011] Further, the heat preservation layer includes ceramic needle felt.

[0012] Further, lifting lugs are provided on the heating housing.

[0013] Further, a plurality of gusset plates are welded on the heating housing.

[0014] In a second aspect, the present invention also provides a method for electrically heating a reactor, which uses the reactor electric heating device described in any item of the first aspect to electrically heat the reactor. Specifically, two heating housings are installed in a mirror-symmetrical manner and wrap and accommodate the reactor, and the electric heating unit is turned on to transfer heat from the heating zone to the reactor in the channel.

[0015] The beneficial effects of the present invention are as follows: The reactor electric heating device and method provided by the present invention form a heater by mirror-symmetrically arranging two heating housings in a lid-like structure, which can be used to wrap and accommodate the reactor and heat and keep warm the reactor by using the electric heating unit, realizing effective and safe heating of the reactor and having no pollution to the gas in the reactor. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the reactor electric heating device in the specific embodiment of the present invention; Figure 2 is a schematic structural diagram of the heater in the specific embodiment of the present invention; Figure 3 is a schematic diagram of the heating zone and the through groove in the specific embodiment of the present invention; Figure 4 is a schematic diagram of the internal structure of the reactor electric heating device after being unfolded in the specific embodiment of the present invention; Figure 5 is a schematic side view of the reactor electric heating device in the specific embodiment of the present invention; In the figure: 10, heating housing; 11, through groove; 12, heat insulation layer; 13, heating zone; 14, through hole; 21, wiring copper plate; 22, tungsten steel wiring terminal; 23, heating wire; 24, lifting lug; 25, insulating tube; 26, porcelain nail; 27, hanging area. Specific Embodiments

[0017] As one of the optional specific embodiments of the present invention, as Figure 1 and Figure 2As shown in the figure, the reactor electric heating device includes two heaters arranged symmetrically with mirror images. Each heater includes a heating outer shell 10 with a cover-like structure. A lifting lug 24 is connected to the top of the heating outer shell 10, and through grooves 11 penetrate through opposite sides of the heating outer shell 10. The through grooves 11 on the two heaters jointly form a channel for covering the reactor after the heaters are combined. This channel is used to cover and accommodate all or at least part of the reactor; a heat preservation layer 12 is arranged inside the heating outer shell 10, and the heat preservation layer 12 is provided with a notch to form a heating area 13 communicating with the channel. An electric heating unit is installed in the heating area 13. Figure 3 It is a schematic diagram of the heating area 13 and the through groove 11.

[0018] As Figure 4 and Figure 5 shown, the electric heating unit in this embodiment includes a plurality of spiral heating wires 23 connected to form a loop. Specifically, the heating wires 23 are connected into a loop through tungsten steel terminal blocks 22 and wiring copper plates 21. Among them, a plurality of heating wires 23 are arranged horizontally and at equal intervals in the heating area 13. The heating wires 23 are specifically spirally wound around the outer wall of an insulating tube 25, and both ends of the insulating tube 25 are respectively connected to through holes 14 on the side walls of the heating outer shell 10 to achieve fixed-distance installation of each heating wire 23. In addition, a plurality of porcelain nails 26 are installed on the heating outer shell 10. The upper side of the porcelain nails 26 is used to abut against and support the insulating tube 25 to achieve further stable installation of the insulating tube 25 and the heating wires 23. In this embodiment, the insulating tube 25 is exemplified by a porcelain tube. In some other embodiments, the insulating tube 25 can also be made of other insulating and heat-resistant materials.

[0019] Refer to Figure 5 , in the hanging area 27, the heat preservation layer 12 made of ceramic needle felt is specifically installed in the heating outer shell 10 by using a plurality of anchor hooks.

[0020] The manufacturing process of the reactor electric heating equipment is as follows: (1) The heating outer shell 10 is manufactured according to the size of the reactor. The plate material is 304 stainless steel plate with a thickness of 8 mm and the insulation layer has a thickness of 150 mm. Each set consists of two corresponding parts of the heating outer shell 10; (2) According to the size of the heating outer shell 10, stiffening plates are welded on the side of the insulation layer 12 to prevent the heating outer shell 10 from deforming due to heat. The stiffening plates have a thickness of 8 mm and a width of 100 mm. The vertical welding method is adopted, and the grid size is not more than 200 mm². Two anchor hooks are welded in each grid to hang the high-density ceramic needle felt for heat insulation to prevent the ceramic needle felt from falling off. The anchor hooks are about 140 mm long and the welding angle is inclined upward at 45 degrees; (3) The total electric heating power of the whole set is 54 KW, which is divided into 6 parts, each part being 9 KW. The heating wire 23 has a diameter of 6 mm. Each part of the heating wire 23 is processed and wound into a spiral body with an outer diameter of 47 mm and an inner diameter of 35 mm. The length of the wound heating wire coil is 500 mm and it consists of 4 parts. It forms a heating area by going up and down 4 layers back and forth. The vertical interval between each coil of the heating wire 23 is 80 mm; (4) Each heating outer shell 10 is composed of 3 groups of electric heating wire. The electric heating wire consists of 2 parts to form a circuit. According to the corresponding upper, middle and lower heights of the heating outer shell 10, it is divided into 3 circuits and the power supply is connected in a star connection method; (5) The connection between the heating wires 23 uses a tungsten steel rod with an outer diameter of 14 mm as the lead-out rod (the length of the lead-out rod is cut according to the actual size). One end is welded to the heating wire 23 and the other end is welded with a 14 mm / 50 mm stainless steel bolt to facilitate the connection of the power supply and the spacing between the heating wires 23 to form a complete circuit.

[0021] As one of the optional implementation manners of the present invention, the reactor is electrically heated by using the aforementioned reactor electric heating equipment. Specifically, two heating outer shells 10 are installed in a mirror-symmetrical manner and wrap and accommodate the reactor. The electric heating unit is turned on to transfer the heat from the heating area 13 to the reactor in the channel, so as to achieve effective and safe heating of the reactor, and there is no pollution to the gas in the reactor.

[0022] In addition to the above embodiments, the present invention may also have other implementation manners. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope required by the present invention.

Claims

1. A reactor electric heating device, characterized in that, It includes two heaters arranged in mirror symmetry. The heater includes a heating outer shell (10) with a lid-like structure, and through grooves (11) penetrate through opposite sides of the heating outer shell (10). The through grooves (11) on the two heaters jointly form a channel that wraps the reactor after the heaters are combined, and this channel wraps and accommodates all or at least part of the reactor. A heat insulation layer (12) is arranged inside the heating outer shell (10), and the heat insulation layer (12) is provided with a notch to form a heating area (13) communicating with the channel, and an electric heating unit is installed in the heating area (13).

2. The reactor electric heating device according to claim 1, characterized in that, The electric heating unit includes a plurality of helical heating wires (23) connected to form a circuit, and the heating wires (23) are connected into a circuit through tungsten steel terminal blocks (22) and wiring copper plates (21).

3. The reactor electric heating device according to claim 2, characterized in that, A plurality of heating wires (23) are arranged horizontally and at equal intervals in the heating area (13).

4. The reactor electric heating device according to claim 2, characterized in that, The heating wires (23) are helically wound around the outer wall of an insulating tube (25), and both ends of the insulating tube (25) are respectively connected to the side wall of the heating outer shell (10).

5. The reactor electric heating device according to claim 4, characterized in that, The insulating tube (25) includes a porcelain tube.

6. The reactor electric heating device according to claim 4, wherein A plurality of porcelain nails (26) are installed on the heating outer shell (10), and the upper sides of the porcelain nails (26) abut against and support the insulating tube (25).

7. The reactor electric heating device according to claim 1, characterized in that, The heat insulation layer (12) includes ceramic needle felt.

8. The reactor electric heating device according to claim 1, wherein Lifting lugs (24) are provided on the heating outer shell (10).

9. The reactor electric heating device according to claim 1, characterized in that, A plurality of rib plates are welded on the heating outer shell (10).

10. A method for electrically heating a reactor, characterized in that, Use the reactor electric heating device described in any one of claims 1-9 to electrically heat the reactor. Specifically, the two heating outer shells (10) are installed in mirror symmetry and wrap and accommodate the reactor, and the electric heating unit is turned on to deliver heat from the heating area (13) to the reactor in the channel.

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