Intelligent integrated evaporator for preparing formaldehyde

Abstract

The present application relates to the technical field of formaldehyde production, in particular to a kind of preparation of formaldehyde intelligent integrated evaporator, including evaporation conduction structure, first injection pipe, evaporation processing structure and second injection pipe, the lower end of evaporation conduction structure is communicated with evaporation processing structure, the upper end side of evaporation processing structure is communicated with first injection pipe, the side of evaporation processing structure away from first injection pipe is communicated with second injection pipe, evaporation processing structure includes butt joint pipe seat, sealed communication seat, evaporation heating part and butt joint valve seat, the lower end of butt joint pipe seat is fixedly connected with sealed communication seat, the center lower end of sealed communication seat is communicated with evaporation heating part, the lower end of evaporation heating part is equipped with butt joint valve seat, the center lower end of butt joint valve seat is communicated with discharge guide pipe, the lower end side of butt joint valve seat is fixedly connected with support stable seat. Through the setting of evaporation conduction structure and evaporation processing structure, the preparation evaporation processing of formaldehyde is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of formaldehyde production, in particular to an intelligent integrated evaporator for preparing formaldehyde. BACKGROUND

[0002] Evaporation is a physical process of converting liquid into gas. Generally speaking, an evaporator is an object that converts liquid into gas. There are a large number of evaporators in industry, and evaporators are also used in the production of formaldehyde. Formaldehyde can be prepared by dehydrogenation or oxidation of methanol under the catalysis of metals such as silver and copper, and can also be separated from hydrocarbon oxidation products. Formaldehyde is used as a pesticide and a disinfectant, and as an important industrial raw material, it needs to be kept absolutely dry during preparation. After the raw materials are added by a feeding mechanism, the evaporator is heated to produce formaldehyde gas.

[0003] As the closest prior art, according to Chinese Patent Publication No. CN102584549A, a raw material gas preparation process and equipment for formaldehyde production are disclosed, in particular, a formaldehyde raw material gas preparation process and equipment for reducing system resistance and further recovering waste heat of the device by improving the structure and heat exchange process of the existing central circulating pipe evaporator. A layer of packing is placed on the tube sheet of the evaporator tube. Methanol and water are simultaneously added to the evaporator in proportion, and the liquid level is controlled below the air inlet. The formaldehyde circulating liquid of the first absorption tower first enters the evaporator tube shell, and then enters the heat exchanger for cooling. The methanol water solution is pumped out from the bottom of the evaporator by the evaporator circulating pump, heated in the cooling section of the lower part of the oxidizer, and then sprayed above the packing. Air passes through the tube and the packing to contact with the methanol water solution in reverse, forming a methanol-air-water vapor mixture. The advantages are power saving, water saving, and large amount of byproduct water vapor;

[0004] At present, the formaldehyde production integrated evaporator needs to be heated during use to ensure the reaction temperature and ensure the evaporation production work. However, the current formaldehyde production integrated evaporator and the above-mentioned case are not convenient for multi-stage continuous heating treatment, which may cause cooling and re-liquidization, thereby affecting the evaporation production effect. Therefore, an improved device is needed to solve the above problems. SUMMARY

[0005] In view of the problems in the prior art, the present application provides an intelligent integrated evaporator for preparing formaldehyde.

[0006] The technical scheme adopted by the present application to solve the technical problems is: an intelligent integrated evaporator for preparing formaldehyde, comprising an evaporation conduction structure, a first feeding pipe, an evaporation treatment structure and a second feeding pipe, the lower end of the evaporation conduction structure is communicated with the evaporation treatment structure, the upper end of the evaporation treatment structure is communicated with the first feeding pipe on one side, and the side of the evaporation treatment structure away from the first feeding pipe is communicated with the second feeding pipe.

[0007] The evaporation treatment structure includes a docking pipe base, a sealing communication base, an evaporation heating part and a docking valve base, the lower end of the docking pipe base is fixedly connected with the sealing communication base, the central lower end of the sealing communication base is communicated with the evaporation heating part, the lower end of the evaporation heating part is provided with the docking valve base, the central lower end of the docking valve base is communicated with the discharge guide pipe, and the lower end side of the docking valve base is fixedly connected with the support stable base.

[0008] Specifically, the evaporation conduction structure includes a conduction pipe, a conduction matching base, a heating rod and a collection pipe, the lower end of the conduction pipe is communicated with the conduction matching base, the central lower end of the conduction matching base is installed with the heating rod, the side end lower part of the conduction matching base is communicated with the collection pipe, the lower end of the collection pipe is communicated with the collection disc, the lower end of the heating rod is through-connection with the collection disc, and the bottom end of the heating rod is through-connection with the insulation protection base, the heating rod through the insulation protection base is electrically connected with the first heating cone sheet, the lower end of the first heating cone sheet is fixedly connected with the second heating cone sheet, the lower end of the second heating cone sheet is fixedly connected with the third heating cone sheet, and the lower end of the third heating cone sheet is fixedly connected with the fourth heating cone sheet.

[0009] Specifically, the first heating cone sheet, the second heating cone sheet, the third heating cone sheet and the fourth heating cone sheet are externally sleeved with a heating evaporation base, the upper end of the heating evaporation base is provided with an auxiliary heater, and the auxiliary heater is provided with six, which are uniformly and annularly distributed around the heating evaporation base, the first heating cone sheet, the second heating cone sheet, the third heating cone sheet and the fourth heating cone sheet can be heated, gaseous formaldehyde is conducted through the gaps of the side ends of the first heating cone sheet, the second heating cone sheet, the third heating cone sheet and the fourth heating cone sheet, meanwhile, the first heating cone sheet, the second heating cone sheet, the third heating cone sheet and the fourth heating cone sheet can be reheated to prevent gaseous formaldehyde from cooling, and at the same time, part of the initial low-temperature formaldehyde can increase the conduction temperature and improve the evaporation efficiency by contacting the first heating cone sheet, the second heating cone sheet, the third heating cone sheet and the fourth heating cone sheet, and part of the formaldehyde will be liquefied during transmission and flow back to the evaporation treatment structure through the first heating cone sheet, the second heating cone sheet, the third heating cone sheet and the fourth heating cone sheet for secondary processing.

[0010] Specifically, the evaporation heating part includes a steam outlet pipe, a docking pipe, a steam inlet pipe and a heat preservation base, the lower end of the steam outlet pipe is communicated with the docking pipe, the lower end of the docking pipe is communicated with the steam inlet pipe, the steam outlet pipe and the steam inlet pipe are through-connection with the heat preservation base and the insulation sleeve, the heat preservation base is arranged in the inside of the insulation sleeve, and a gap is arranged between the heat preservation base and the insulation sleeve, an electric heating wire is arranged at the gap position between the heat preservation base and the insulation sleeve, and the outside of the insulation sleeve is sleeved with a heat preservation outer plate.

[0011] Specifically, the connecting pipes are arranged in a cross-symmetrical pattern, and steam is conducted to the connecting pipes through the steam inlet pipe and discharged to the external pipe body through the steam outlet pipe.

[0012] Specifically, the first heating cone, the second heating cone, the third heating cone, and the fourth heating cone are designed with a conical structure, which can perform secondary heating treatment. The upper end of the heating evaporation seat is connected to the collecting pipe and the collecting plate.

[0013] Specifically, the lower end of the heating evaporation seat is connected to a connecting pipe seat and a sealing connecting seat. The first injection pipe and the second injection pipe are connected through the sealing connecting seat. The lower end of the sealing connecting seat is connected to the heat preservation seat. The electric heating wire is electrically connected to an external power source, and the heating rod is electrically connected to an external power source.

[0014] Specifically, a load-bearing end frame is fixedly connected to the side end of the thermal insulation outer panel, a buffer rod is buffered to the lower end of the load-bearing end frame, and a support and stabilizing frame is limited to the lower end of the buffer rod.

[0015] The beneficial effects of this invention are:

[0016] First, this invention, through the structural design of the evaporation conduction structure, enables evaporation conduction. During the conduction of gaseous formaldehyde, it can assist in reheating. The auxiliary heater heats the heating evaporation seat, causing the formaldehyde to vaporize and conduct through the heating evaporation seat. Simultaneously, the first, second, third, and fourth heating cones can heat the gaseous formaldehyde through the gaps at the sides of these cones. The first, second, third, and fourth heating cones can also reheat the gaseous formaldehyde, preventing it from cooling. Furthermore, some initially low-temperature formaldehyde can increase its conduction temperature and improve evaporation efficiency through contact with the first, second, third, and fourth heating cones. During transport, some formaldehyde liquefies and flows back into the evaporation treatment structure through the first, second, third, and fourth heating cones for secondary processing.

[0017] Second, the present invention, through the structural design of the evaporation treatment structure, can quickly perform formaldehyde vaporization treatment. Formaldehyde is conducted to the interior of the insulation base through the first injection pipe and the second injection pipe. At this time, the electric heating wire can heat the interior of the insulation base. At the same time, high-temperature steam can be introduced through the steam inlet pipe, transmitted through the connecting pipe, and then discharged through the steam outlet pipe. The connecting pipe adopts a convection staggered design, which can enhance the transmission pressure, improve the heating efficiency, and help the evaporation treatment of formaldehyde. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a three-dimensional structural diagram of the main body from a frontal perspective in this invention;

[0020] Figure 2 This is a frontal three-dimensional structural diagram of the evaporation conduction structure in this invention;

[0021] Figure 3 This is a split view of the evaporation conduction structure in this invention;

[0022] Figure 4 This is a frontal perspective three-dimensional structural diagram of the evaporation treatment structure in this invention;

[0023] Figure 5 This is a exploded view of the evaporation treatment structure in this invention;

[0024] Figure 6 This is an exploded view of the evaporation heating section in this invention;

[0025] Figure 7 In this invention Figure 6 Enlarged view of point A;

[0026] Figure 8 This is a frontal perspective three-dimensional structural diagram of the second embodiment of the main body of the present invention.

[0027] In the diagram: 1-Evaporation conduction structure, 2-First injection pipe, 3-Evaporation treatment structure, 4-Second injection pipe, 5-Conduction pipe, 6-Conduction mating seat, 7-Heating rod, 8-Collection pipe, 9-Collection plate, 10-Insulation protection seat, 11-First heating cone, 12-Second heating cone, 13-Third heating cone, 14-Fourth heating cone, 15-Heating evaporation seat, 16-Auxiliary heater, 17-Connecting pipe seat, 18-Sealing connection seat, 19-Evaporation heating section, 20-Connecting valve seat, 21-Discharge conduit, 22-Supporting and stabilizing seat, 23-Steam outlet pipe, 24-Connecting pipe, 25-Steam inlet pipe, 26-Insulation seat, 27-Electric heating wire, 28-Insulation sleeve, 29-Insulation outer plate, 30-Supporting and stabilizing frame, 31-Buffer rod, 32-Bearing end frame. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] The invention will be further described below with reference to the accompanying drawings. Example 1

[0031] like Figures 1-7 As shown, an intelligent integrated evaporator for preparing formaldehyde according to the present invention includes an evaporation conduction structure 1, a first injection pipe 2, an evaporation treatment structure 3, and a second injection pipe 4. The lower end of the evaporation conduction structure 1 is connected to the evaporation treatment structure 3, one side of the upper end of the evaporation treatment structure 3 is connected to the first injection pipe 2, and the side of the evaporation treatment structure 3 away from the first injection pipe 2 is connected to the second injection pipe 4.

[0032] like Figure 4 , Figure 5 As shown, the evaporation treatment structure 3 includes a connecting pipe seat 17, a sealing communication seat 18, an evaporation heating part 19, and a docking valve seat 20. The lower end of the connecting pipe seat 17 is fixedly connected to the sealing communication seat 18. The lower center of the sealing communication seat 18 is connected to the evaporation heating part 19. The lower end of the evaporation heating part 19 is provided with a docking valve seat 20. The lower center of the docking valve seat 20 is connected to a discharge conduit 21. The lower side of the docking valve seat 20 is fixedly connected to a support and stabilizing seat 22.

[0033] like Figure 2 , Figure 3As shown, the evaporation conduction structure 1 includes a conduction tube 5, a conduction mating seat 6, a heating rod 7, and a collecting pipe 8. The lower end of the conduction tube 5 is connected to the conduction mating seat 6. The heating rod 7 is installed at the lower center of the conduction mating seat 6. The lower part of the side end of the conduction mating seat 6 is connected to the collecting pipe 8. The lower end of the collecting pipe 8 is connected to the collecting plate 9. The lower end of the heating rod 7 is connected to the collecting plate 9, and the bottom end of the heating rod 7 is connected to the insulating protection seat 10. The heating rod 7 is electrically connected to the first heating cone 11 through the insulating protection seat 10. The first heating cone 11... The lower end of the heating rod 7 is fixedly connected to a second heating cone 12, the lower end of the second heating cone 12 is fixedly connected to a third heating cone 13, and the lower end of the third heating cone 13 is fixedly connected to a fourth heating cone 14. Gaseous formaldehyde is conducted to the collecting pipe 8 through the collecting plate 9, and then to the conducting pipe 5 through the conducting mating seat 6 for centralized collection and processing, thus facilitating the transmission and processing of gaseous formaldehyde. At the same time, the structure of the heating rod 7 allows for reheating, so that the gaseous formaldehyde can undergo a heating reaction within the conducting mating seat 6.

[0034] A heating evaporation seat 15 is sleeved on the outside of the first heating cone 11, the second heating cone 12, the third heating cone 13, and the fourth heating cone 14. An auxiliary heater 16 is provided at the upper end of the heating evaporation seat 15, and there are six auxiliary heaters 16, which are evenly distributed in a ring around the heating evaporation seat 15.

[0035] like Figure 6 , Figure 7 As shown, the evaporation heating unit 19 includes a steam outlet pipe 23, a connecting pipe 24, a steam inlet pipe 25, and an insulation base 26. High-temperature steam is introduced through the steam inlet pipe 25. The temperature of the high-temperature steam exceeds the boiling point of formaldehyde. The high-temperature steam is conducted to the connecting pipe 24 through the steam inlet pipe 25. The steam inlet pipes 25 are symmetrically arranged and all are guided through the connecting pipe 24. Within the connecting pipe 24, the high-temperature steam can collide, increasing the conduction pressure. The formaldehyde production solution is heated and vaporized through the connecting pipe 24. The lower end of the steam outlet pipe 23 is connected to the connecting pipe 24, and the lower end of the connecting pipe 24 is connected to the steam inlet pipe 25. A heat-insulating base 26 and an insulating sleeve 28 are connected through the steam outlet pipe 23 and the steam inlet pipe 25. The heat-insulating base 26 is located inside the insulating sleeve 28, and there is a gap between the heat-insulating base 26 and the insulating sleeve 28. An electric heating wire 27 is installed at the gap between the heat-insulating base 26 and the insulating sleeve 28. An insulating outer plate 29 is sleeved on the outside of the insulating sleeve 28. The electric heating wire 27 can perform internal heating treatment by connecting to an external power source, so that the formaldehyde production solution can be heated and reacted inside the heat-insulating base 26. The insulating sleeve 28 and the insulating outer plate 29 play a protective role, preventing heat transfer and providing flame-retardant insulation protection.

[0036] The connecting pipes 24 are symmetrically distributed, and steam is conducted to the connecting pipes 24 through the steam inlet pipe 25 and discharged to the external pipe body through the steam outlet pipe 23.

[0037] The first heating cone 11, the second heating cone 12, the third heating cone 13, and the fourth heating cone 14 are designed with a conical structure, enabling secondary heating. The upper end of the heating evaporator 15 is connected to the collecting pipe 8 and the collecting plate 9. The first heating cone 11, the second heating cone 12, the third heating cone 13, and the fourth heating cone 14 can perform heating. Gaseous formaldehyde is conducted through the gaps at the side ends of the first heating cone 11, the second heating cone 12, the third heating cone 13, and the fourth heating cone 14. Simultaneously, the first heating cone 11... The second heating cone 12, the third heating cone 13, and the fourth heating cone 14 can be reheated to prevent the gaseous formaldehyde from cooling down. At the same time, some of the initially low-temperature formaldehyde can increase the conduction temperature and improve the evaporation efficiency by contacting the first heating cone 11, the second heating cone 12, the third heating cone 13, and the fourth heating cone 14. During the transfer, some of the formaldehyde will liquefy and flow back to the evaporation treatment structure 3 through the first heating cone 11, the second heating cone 12, the third heating cone 13, and the fourth heating cone 14 for secondary treatment.

[0038] The lower end of the heating evaporator seat 15 is connected to the connecting pipe seat 17 and the sealing connecting seat 18. The first injection pipe 2 and the second injection pipe 4 are connected through the sealing connecting seat 18. The lower end of the sealing connecting seat 18 is connected to the heat preservation seat 26. The electric heating wire 27 is electrically connected to the external power supply, and the heating rod 7 is electrically connected to the external power supply. Through the electrical connection, it can act on the resistance to carry out heating production work and realize the control of evaporation temperature.

[0039] The working principle of Example 1 is as follows: During use, the user assembles the evaporation conduction structure 1, the first injection pipe 2, the evaporation treatment structure 3, and the second injection pipe 4. The user introduces the formaldehyde production solution through the first injection pipe 2 and the second injection pipe 4, storing it inside the insulation base 26. At this time, the electric heating wire 27, connected to an external power source, can perform internal heating, allowing the formaldehyde production solution to react within the insulation base 26. The insulating sleeve 28 and the outer insulation plate 29 provide protection, preventing heat transfer while also providing flame-retardant insulation. Then, the user introduces high-temperature steam through the steam inlet pipe 25. The temperature of the high-temperature steam exceeds the boiling point of formaldehyde. The high-temperature steam is conducted through the steam inlet pipe 25 to the connecting pipe 24. The steam inlet pipes 25 are symmetrically arranged, all passing through the connecting pipe 24. Within the connecting pipe 24, the high-temperature steam collides, increasing the conduction pressure. The formaldehyde production solution is heated through the connecting pipe 24 and undergoes vaporization. Low-temperature steam is discharged through the steam outlet pipe 23. At this time, the formaldehyde evaporates within the insulation base 26. The formaldehyde is conducted to the interior of the heating evaporator 15 through the sealed connecting seat 18. At this time, the auxiliary heater 16 is energized and can heat the interior of the heating evaporator 15 to ensure the formaldehyde transmission temperature. The heating rod 7 is also energized and can supply power to the first heating cone 11, the second heating cone 12, the third heating cone 13, and the fourth heating cone 14, allowing these cones to be heated again for further heating. Simultaneously, low... The warm formaldehyde can flow back into the insulation seat 26 through the first heating cone 11, the second heating cone 12, the third heating cone 13, and the fourth heating cone 14 for a second reaction. After that, the gaseous formaldehyde is conducted to the collecting pipe 8 through the collecting plate 9, and then to the conducting pipe 5 through the conducting mating seat 6 for centralized collection and treatment. At the same time, the docking valve seat 20 and the discharge pipe 21 are connected. The connection at the bottom can be controlled by the docking valve seat 20. After production is completed, waste can be discharged through the docking valve seat 20 and the discharge pipe 21 to complete the work. Example 2

[0040] Based on Example 1, such as Figure 8 As shown, a bearing end frame 32 is fixedly connected to the side end of the insulation outer panel 29, a buffer rod 31 is buffered connected to the lower end of the bearing end frame 32, and a support and stabilizing frame 30 is limited connected to the lower end of the buffer rod 31.

[0041] In this embodiment, the side end of the insulation outer plate 29 is fixed to the bearing end frame 32, while the support and stabilizing frame 30 provides bottom support. The buffer rod 31 can extend and retract, and through deformation, it can provide buffer protection. The buffer rod 31 is equipped with hydraulic oil, which can ensure the stability of the bearing end frame 32 and the upper insulation outer plate 29, and improve the overall load-bearing capacity of the equipment.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smart integrated evaporator for preparing formaldehyde, characterized in that: It includes an evaporation conduction structure (1), a first injection pipe (2), an evaporation treatment structure (3), and a second injection pipe (4). The lower end of the evaporation conduction structure (1) is connected to the evaporation treatment structure (3), one side of the upper end of the evaporation treatment structure (3) is connected to the first injection pipe (2), and the side of the evaporation treatment structure (3) away from the first injection pipe (2) is connected to the second injection pipe (4). The evaporation treatment structure (3) includes a connecting pipe seat (17), a sealing communication seat (18), an evaporation heating part (19), and a docking valve seat (20). The lower end of the connecting pipe seat (17) is fixedly connected to the sealing communication seat (18). The lower center of the sealing communication seat (18) is connected to the evaporation heating part (19). The lower end of the evaporation heating part (19) is provided with a docking valve seat (20). The lower center of the docking valve seat (20) is connected to a discharge conduit (21). The lower side of the docking valve seat (20) is fixedly connected to a support and stabilizing seat (22). The evaporation conduction structure (1) includes a conduction tube (5), a conduction mating seat (6), a heating rod (7), and a collecting tube (8). The lower end of the conduction tube (5) is connected to the conduction mating seat (6). The heating rod (7) is installed at the lower center of the conduction mating seat (6). The lower side of the conduction mating seat (6) is connected to the collecting tube (8). The lower end of the collecting tube (8) is connected to the collecting plate (9). The lower end of the heating rod (7) is connected to the collecting plate (9). The bottom end of the heating rod (7) is connected to the insulating protection seat (10). The heating rod (7) is electrically connected to the first heating cone (11) through the insulating protection seat (10). The lower end of the first heating cone (11) is fixedly connected to the second heating cone (12). The lower end of the second heating cone (12) is fixedly connected to the third heating cone (13). The lower end of the third heating cone (13) is fixedly connected to the fourth heating cone (14). The first heating cone (11), the second heating cone (12), the third heating cone (13), and the fourth heating cone (14) are fitted with a heating evaporation seat (15). The upper end of the heating evaporation seat (15) is provided with an auxiliary heater (16), and there are six auxiliary heaters (16) that are evenly distributed in a ring around the heating evaporation seat (15).

2. The intelligent integrated evaporator for preparing formaldehyde according to claim 1, characterized in that: The evaporation heating unit (19) includes a steam outlet pipe (23), a connecting pipe (24), a steam inlet pipe (25), and a heat preservation base (26). The lower end of the steam outlet pipe (23) is connected to the connecting pipe (24), and the lower end of the connecting pipe (24) is connected to the steam inlet pipe (25). The heat preservation base (26) and the insulating sleeve (28) are connected through the steam outlet pipe (23) and the steam inlet pipe (25). The heat preservation base (26) is located inside the insulating sleeve (28), and there is a gap between the heat preservation base (26) and the insulating sleeve (28). An electric heating wire (27) is provided at the gap between the heat preservation base (26) and the insulating sleeve (28). An insulating outer plate (29) is sleeved on the outside of the insulating sleeve (28).

3. The intelligent integrated evaporator for preparing formaldehyde according to claim 2, characterized in that: The connecting pipe (24) is symmetrically distributed, and steam is conducted to the connecting pipe (24) through the steam inlet pipe (25) and discharged to the external pipe body through the steam outlet pipe (23).

4. The intelligent integrated evaporator for preparing formaldehyde according to claim 2, characterized in that: The first heating cone (11), the second heating cone (12), the third heating cone (13), and the fourth heating cone (14) are designed with a cone shape and can be used for secondary heating. The upper end of the heating evaporation seat (15) is connected to the collecting pipe (8) and the collecting plate (9).

5. The intelligent integrated evaporator for preparing formaldehyde according to claim 2, characterized in that: The lower end of the heating evaporation seat (15) is connected to the connecting pipe seat (17) and the sealing connecting seat (18). The first injection pipe (2) and the second injection pipe (4) are connected through the sealing connecting seat (18). The lower end of the sealing connecting seat (18) is connected to the heat preservation seat (26). The electric heating wire (27) is electrically connected to the external power supply, and the heating rod (7) is electrically connected to the external power supply.

6. The intelligent integrated evaporator for preparing formaldehyde according to claim 2, characterized in that: The side end of the insulation outer panel (29) is fixedly connected to a bearing end frame (32), the lower end of the bearing end frame (32) is buffered and connected to a buffer rod (31), and the lower end of the buffer rod (31) is limited and connected to a support and stabilizing frame (30).

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