CN213480595U - Formaldehyde production line air preheating device - Google Patents
Formaldehyde production line air preheating device Download PDFInfo
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- CN213480595U CN213480595U CN202022752032.0U CN202022752032U CN213480595U CN 213480595 U CN213480595 U CN 213480595U CN 202022752032 U CN202022752032 U CN 202022752032U CN 213480595 U CN213480595 U CN 213480595U
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- preheating
- cavity
- box
- welded
- distance
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000005485 electric heating Methods 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000011496 polyurethane foam Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 abstract description 5
- 238000001704 evaporation Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000012824 chemical production Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model belongs to the technical field of chemical production equipment, in particular to air preheating equipment of a formaldehyde production line, which comprises a first preheating cavity, a second preheating cavity, a third preheating cavity and an electric heating rod; the 3 preheating cavities are welded into a whole through a sealing plate, the preheating cavities on two sides are welded with end sockets, and the end sockets are provided with air inlet pipes and air outlet pipes; 3 uniformly distributed first preheating boxes are welded in the first preheating cavity, 2 second preheating boxes are welded in the second preheating cavity, and 1 third preheating box is welded in the third preheating cavity; the 3 preheating boxes are respectively provided with an electric heating rod, the two sides of each preheating box are provided with uniformly distributed fins, the distance between the fins of the first preheating box is smaller than the distance between the two fins of the second preheating box, and the distance between the two fins of the second preheating box is smaller than the distance between the two fins of the third preheating box; this preheating equipment realizes preheating cold air or normal atmospheric temperature air through tertiary preheating, and the air after preheating gets into in the evaporimeter will improve evaporation effect and efficiency.
Description
The technical field is as follows:
the utility model belongs to the technical field of chemical production equipment, concretely relates to formaldehyde production line air preheating device.
Background art:
in the process of producing formaldehyde in a chemical plant, methanol, water vapor and air are conveyed to an evaporator in the first step, and if cold air or normal-temperature air is directly conveyed to the evaporator for evaporation, the evaporation effect is influenced, and the evaporation efficiency is reduced. Therefore, it is necessary to design an air preheating device for a formaldehyde production line.
The novel content is as follows:
the invention aims to provide air preheating equipment for a formaldehyde production line, which realizes the preheating of cold air or normal temperature air through three-level preheating, and the preheated air enters an evaporator to improve the evaporation effect and efficiency. Simple structure, reasonable design, easy popularization and use on a large scale.
The technical scheme adopted by the novel method is as follows: the air preheating device for the formaldehyde production line comprises a first preheating cavity, a second preheating cavity, a third preheating cavity and an electric heating rod; the first preheating cavity, the second preheating cavity and the third preheating cavity are sequentially welded into a whole through sealing plates, a seal head is welded on the first preheating cavity, an air inlet pipe is welded on the seal head, a seal head is welded on the third preheating cavity, an air outlet pipe is welded on the seal head, and connecting flanges are welded on the air outlet pipe and the air inlet pipe; 3 uniformly distributed first preheating boxes are welded in the first preheating cavity, 2 second preheating boxes are welded in the second preheating cavity, and 1 third preheating box is welded in the third preheating cavity; the first preheating box, the second preheating box and the third preheating box are respectively internally provided with an electric heating rod, and fins are uniformly distributed on two sides of the first preheating box, the second preheating box and the third preheating box, wherein the distance between two adjacent fins on the first preheating box is smaller than the distance between two adjacent fins on the second preheating box, and the distance between two adjacent fins on the second preheating box is smaller than the distance between two adjacent fins on the third preheating box; the length of the first preheating cavity is greater than that of the second preheating cavity, and the length of the second preheating cavity is greater than that of the third preheating cavity.
Furthermore, polyurethane foam heat-insulating layers are arranged outside the first preheating cavity, the second preheating cavity, the third preheating cavity, the sealing plate and the sealing head which are connected with the first preheating cavity, the second preheating cavity and the third preheating cavity.
Further, the distance between two adjacent fins on the third preheating box is 2 times of the distance between two adjacent fins on the second preheating box, and the distance between two adjacent fins on the second preheating box is 2 times of the distance between two adjacent fins on the first preheating box.
Furthermore, the first preheating cavity, the second preheating cavity, the third preheating cavity, the first preheating box, the second preheating box, the third preheating box, the fins, the sealing plate and the end enclosure are made of steel.
This neotype beneficial effect: the utility model provides a safe and reliable's sampling device for formaldehyde production line, this sampling device's sampling bottle top is equipped with the open protection casing of front side, can prevent effectively that chemical industry liquid from splashing or flowing on one's body of sampler in the sample process, has eliminated the potential safety hazard, safe and reliable, simple structure, low in manufacturing cost is honest and clean, and economy is suitable for, easily promotes and uses on a large scale.
Description of the drawings:
FIG. 1 is a schematic top view of the first embodiment;
FIG. 2 is a schematic front view of the first embodiment;
FIG. 3 is a schematic structural view of a first preheating chamber in the first embodiment;
FIG. 4 is a schematic structural view of a second preheating chamber in the first embodiment;
FIG. 5 is a schematic structural view of a first preheating chamber in the first embodiment;
fig. 6 is a schematic structural diagram of the second embodiment.
The specific implementation mode is as follows:
example one
Referring to fig. 1-5, an air preheating device for a formaldehyde production line comprises a first preheating cavity 1, a second preheating cavity 6, a third preheating cavity 8 and an electric heating rod 3; the first preheating cavity 1, the second preheating cavity 6 and the third preheating cavity 8 are sequentially welded into a whole through the sealing plates 5, the first preheating cavity 1 is welded with the end socket 10, the end socket 10 is welded with the air inlet pipe 13, the third preheating cavity 8 is welded with the end socket 10, the end socket 10 is welded with the air outlet pipe 11, and the air outlet pipe 11 and the air inlet pipe 13 are welded with the connecting flanges 12; 3 uniformly distributed first preheating boxes 2 are welded in the first preheating cavity 1, 2 second preheating boxes 7 are welded in the second preheating cavity 6, and 1 third preheating box 9 is welded in the third preheating cavity 8; the first preheating box 2, the second preheating box 7 and the third preheating box 9 are internally provided with electric heating rods 3 respectively, and two sides of the first preheating box 2, the second preheating box 7 and the third preheating box 9 are provided with uniformly distributed fins 4, wherein the distance between two adjacent fins 4 on the first preheating box 2 is smaller than the distance between two adjacent fins 4 on the second preheating box 7, and the distance between two adjacent fins 4 on the second preheating box 7 is smaller than the distance between two adjacent fins 4 on the third preheating box 9; the length of the first preheating cavity 1 is greater than that of the second preheating cavity 6, and the length of the second preheating cavity 6 is greater than that of the third preheating cavity 8; the distance between two adjacent fins 4 on the third preheating box 9 is 2 times of the distance between two adjacent fins 4 on the second preheating box 7, and the distance between two adjacent fins 4 on the second preheating box 7 is 2 times of the distance between two adjacent fins 4 on the first preheating box 2; the first preheating cavity 1, the second preheating cavity 6, the third preheating cavity 8, the first preheating box 2, the second preheating box 7, the third preheating box 9, the fins 4, the sealing plate 5 and the end enclosure 10 are made of steel.
The air inlet pipe of the preheating device is communicated with the air inlet duct, and the air outlet pipe of the preheating device is communicated with the air inlet of the evaporator. The air gets into first preheating chamber earlier and carries out high-efficient preheating, is provided with 3 preheating cabinets that are equipped with the electrical heating stick in the first preheating chamber, preheats the air fast through 3 electrical heating sticks to fin in the first preheating chamber is for intensive arranging, and heat exchange efficiency is high, this chamber air heating's main cavity room. Because the temperature that the air preheated need not be too high, so the air after preheating gets into the second and preheats the intracavity and further preheats through 2 electric heating rods, and this preheating chamber is less than first preheating chamber to the heating efficiency of air, and the intensification range of air is less, and is less than first preheating chamber power consumption. The cavity of the second preheating cavity is smaller than that of the first preheating cavity, but the fin spacing of the cavity is larger than that of the first preheating cavity, so that the air circulation influence is small. The third preheating cavity is only used for carrying out heat preservation and preheating through 1 electric heating rod, the cavity of the third preheating cavity is smaller than that of the second preheating cavity, but the fin interval of the third preheating cavity is larger than that of the first preheating cavity, and air circulation is facilitated. The electric heating rod is preferably an electric heating rod or an electric heating tube set produced by Shenyang Enteng electric heating technology Co., Ltd, Situ electric heater Co., Ltd in salt cities, Jiangsu Kaibo explosion-proof electric appliance Co., Ltd, Jiuxin electric heating appliance Co., Ltd, Jiangsu Yangtian electric heating equipment Co., Ltd and Taiji electric heating Co., Ltd in Dongguan cities.
Example two
Referring to fig. 6, on the basis of the technical solution of the first embodiment, a polyurethane foam heat insulation layer 14 is disposed outside the first preheating cavity 1, the second preheating cavity 6, the third preheating cavity 8, and the sealing plate 5 and the end enclosure 10 connected thereto. The heat preservation can reduce the calorific loss who preheats the chamber, improves heat exchange efficiency.
EXAMPLE III
On the basis of the technical scheme of the first embodiment, the electric heating device further comprises an electric controller, and all the electric heating rods are connected with the electric controller to control the opening and closing of the electric heating rods in a centralized mode. The electric appliance controller is preferably a controller produced by Yangzhou people's electric technology, Tongxiang electric technology, Zhejiang arbor electric technology, Tongling Zhemei electric technology, Zhengzhou Wantai electric technology, Anhui electric technology, Zhejiang Shunjiang Tongqi electric technology, and Wenzhou Kanjin electric technology.
Claims (4)
1. The utility model provides a formaldehyde production line air preheating device which characterized in that: the air preheating device comprises a first preheating cavity (1), a second preheating cavity (6), a third preheating cavity (8) and an electric heating rod (3); the preheating device is characterized in that the first preheating cavity (1), the second preheating cavity (6) and the third preheating cavity (8) are sequentially welded into a whole through a sealing plate (5), a sealing head (10) is welded on the first preheating cavity (1), an air inlet pipe (13) is welded on the sealing head (10), a sealing head (10) is welded on the third preheating cavity (8), an air outlet pipe (11) is welded on the sealing head (10), and connecting flanges (12) are welded on the air outlet pipe (11) and the air inlet pipe (13); 3 uniformly distributed first preheating boxes (2) are welded in the first preheating cavity (1), 2 second preheating boxes (7) are welded in the second preheating cavity (6), and 1 third preheating box (9) is welded in the third preheating cavity (8); the electric heating rods (3) are respectively arranged in the first preheating box (2), the second preheating box (7) and the third preheating box (9), fins (4) are uniformly distributed on two sides of the first preheating box (2), the second preheating box (7) and the third preheating box (9), wherein the distance between two adjacent fins (4) on the first preheating box (2) is smaller than the distance between two adjacent fins (4) on the second preheating box (7), and the distance between two adjacent fins (4) on the second preheating box (7) is smaller than the distance between two adjacent fins (4) on the third preheating box (9); the length of the first preheating cavity (1) is greater than that of the second preheating cavity (6), and the length of the second preheating cavity (6) is greater than that of the third preheating cavity (8).
2. The formaldehyde production line air preheating equipment of claim 1, characterized in that: and polyurethane foam heat-insulating layers (14) are arranged outside the first preheating cavity (1), the second preheating cavity (6), the third preheating cavity (8) and the connected sealing plates (5) and the sealing heads (10).
3. The formaldehyde production line air preheating equipment as claimed in claim 1 or 2, characterized in that: the distance between two adjacent fins (4) on the third preheating box (9) is 2 times of the distance between two adjacent fins (4) on the second preheating box (7), and the distance between two adjacent fins (4) on the second preheating box (7) is 2 times of the distance between two adjacent fins (4) on the first preheating box (2).
4. The formaldehyde production line air preheating equipment as claimed in claim 1 or 2, characterized in that: the first preheating cavity (1), the second preheating cavity (6), the third preheating cavity (8), the first preheating box (2), the second preheating box (7), the third preheating box (9), the fins (4), the sealing plate (5) and the end enclosure (10) are made of steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022752032.0U CN213480595U (en) | 2020-11-25 | 2020-11-25 | Formaldehyde production line air preheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022752032.0U CN213480595U (en) | 2020-11-25 | 2020-11-25 | Formaldehyde production line air preheating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213480595U true CN213480595U (en) | 2021-06-18 |
Family
ID=76357219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022752032.0U Expired - Fee Related CN213480595U (en) | 2020-11-25 | 2020-11-25 | Formaldehyde production line air preheating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213480595U (en) |
-
2020
- 2020-11-25 CN CN202022752032.0U patent/CN213480595U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210618 |
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| CF01 | Termination of patent right due to non-payment of annual fee |