CN213631696U - Formaldehyde production heat transfer device - Google Patents
Formaldehyde production heat transfer device Download PDFInfo
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- CN213631696U CN213631696U CN202022752033.5U CN202022752033U CN213631696U CN 213631696 U CN213631696 U CN 213631696U CN 202022752033 U CN202022752033 U CN 202022752033U CN 213631696 U CN213631696 U CN 213631696U
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Abstract
The utility model belongs to the technical field of chemical production equipment, in particular to a formaldehyde production heat exchange device, which comprises a heat exchange box, a U-shaped preheating pipe, a chimney, a smoke induced draft fan and an air induced draft fan; the heat exchange box comprises a heat exchange box body, a heat preservation box body, a U-shaped convolution smoke channel and a U-shaped convolution air channel; the U-shaped rotary flue gas channel is provided with a flue gas inlet pipe and a flue gas outlet pipe, and the U-shaped rotary air channel is provided with an air outlet pipe and an air inlet pipe; the heat exchange box body is positioned in the heat preservation box body, paraffin is arranged in the annular cavities of the heat preservation box body and the heat exchange box body, and a heat preservation layer is arranged outside the heat preservation box body; the air inlet of the air draught fan is communicated with the air outlet pipe, the air inlet pipe is communicated with the U-shaped preheating pipe, the U-shaped preheating pipe is positioned in the chimney, the air inlet of the smoke draught fan is communicated with the smoke outlet pipe, and the air outlet of the smoke draught fan is communicated with the bottom of the chimney. This heat transfer device passes through the flue gas and realizes preheating cold air or normal atmospheric temperature air, and the air entering evaporimeter after preheating will improve evaporation effect and efficiency in.
Description
The technical field is as follows:
the utility model belongs to the technical field of chemical production equipment, concretely relates to formaldehyde production heat transfer device.
Background art:
in the process of producing formaldehyde in a chemical plant, methanol, water vapor and air are conveyed into an evaporator in the first step, the temperature in winter in the northeast is low, and if cold air is directly conveyed into the evaporator for evaporation, the evaporation effect is influenced, and the evaporation efficiency is reduced. Therefore, it is necessary to design an air heat exchange device for formaldehyde production.
The novel content is as follows:
the invention aims to provide a heat exchange device for formaldehyde production, which preheats cold air through flue gas, and the preheated air enters an evaporator to improve the evaporation effect and efficiency. The structure design is reasonable, and the utility model is easy to be popularized and used on a large scale.
The technical scheme adopted by the novel method is as follows: a heat exchange device for formaldehyde production comprises a heat exchange box, a U-shaped preheating pipe, a chimney, a flue gas induced draft fan and an air induced draft fan; the heat exchange box comprises a heat exchange box body, a heat preservation box body, a U-shaped convolution smoke channel and a U-shaped convolution air channel; the U-shaped convolution flue gas channel is positioned in the heat exchange box body, the bottom of the U-shaped convolution flue gas channel is welded at the bottom of the heat exchange box body through a supporting plate, one end of the U-shaped convolution flue gas channel is provided with a smoke inlet pipe, the other end of the U-shaped convolution flue gas channel is provided with a smoke outlet pipe, the U-shaped convolution air channel is positioned in the U-shaped convolution flue gas channel, the bottom of the U-shaped convolution air channel is welded at the bottom of the U-shaped convolution flue gas channel through the supporting plate, one end of the U; the heat exchange box body is positioned in the heat preservation box body, the bottom of the heat exchange box body is welded at the bottom of the heat preservation box body through the supporting plate, paraffin is arranged in annular cavities of the heat preservation box body and the heat exchange box body, and a heat preservation layer is arranged outside the heat preservation box body; the air inlet of the air draught fan is communicated with an air outlet pipe of the U-shaped convolution air channel, an air inlet pipe of the U-shaped convolution air channel is communicated with the U-shaped preheating pipe, the U-shaped preheating pipe is located in the chimney, the air inlet of the smoke draught fan is communicated with a smoke outlet pipe of the U-shaped convolution smoke channel, and the air outlet of the smoke draught fan is communicated with the bottom of the chimney.
Furthermore, the heat insulation material of the heat insulation layer is made of polyurethane foam.
Further, the air inlet of the U-shaped preheating pipe is positioned at the bottom of the chimney and extends to the outside of the chimney.
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 structural diagram of a heat exchange box in the first embodiment;
FIG. 3 is a schematic side view of the first embodiment of the U-shaped swirling flue gas channel.
The specific implementation mode is as follows:
example one
Referring to the figures, the heat exchange device for formaldehyde production comprises a heat exchange box 1, a U-shaped preheating pipe 2, a chimney 3, a flue gas induced draft fan 4 and an air induced draft fan 5; the heat exchange box 1 comprises a heat exchange box body 11, a heat preservation box body 12, a U-shaped convolution smoke channel 20 and a U-shaped convolution air channel 19; the U-shaped convolution flue gas channel 20 is positioned in the heat exchange box body 11, the bottom of the U-shaped convolution flue gas channel 20 is welded at the bottom of the heat exchange box body 11 through a support plate, one end of the U-shaped convolution flue gas channel 20 is provided with a smoke inlet pipe 17, the other end of the U-shaped convolution flue gas channel is provided with a smoke outlet pipe 16, the U-shaped convolution air channel 19 is positioned in the U-shaped convolution flue gas channel 20, the bottom of the U-shaped convolution air channel 19 is welded at the bottom of the U-shaped convolution flue gas channel 20 through the support plate, one end of the U-shaped convolution air; the heat exchange box body 11 is positioned in the heat preservation box body 12, the bottom of the heat exchange box body 11 is welded at the bottom of the heat preservation box body 12 through a support plate, paraffin 13 is arranged in annular cavities of the heat preservation box body 12 and the heat exchange box body 11, and a heat preservation layer 14 is arranged outside the heat preservation box body 12; an air inlet of the air induced draft fan 5 is communicated with an air outlet pipe 18 of a U-shaped convolution air channel 19, an air inlet pipe 15 of the U-shaped convolution air channel 19 is communicated with a U-shaped preheating pipe 2, the U-shaped preheating pipe 2 is positioned in a chimney 3, an air inlet of the smoke induced draft fan 4 is communicated with a smoke outlet pipe 16 of a U-shaped convolution smoke channel 20, and an air outlet of the smoke induced draft fan is communicated with the bottom of the chimney 3; the heat insulation material of the heat insulation layer 14 is polyurethane foam; the air inlet of the U-shaped preheating pipe 2 is positioned at the bottom of the chimney 3 and extends to the outside of the chimney 3.
The heat exchange device is suitable for the production of formaldehyde in winter, a smoke inlet pipe of the U-shaped convoluted smoke channel is communicated with smoke exhaust pipes of boilers such as a tail gas boiler and a waste gas boiler, and an air outlet of the air induced draft fan is communicated with an air inlet of the evaporator. Under the action of an air draught fan, cold air enters the U-shaped convoluted smoke channel from the U-shaped preheating pipe to exchange heat with smoke, and the U-shaped preheating pipe is located in the chimney and is primarily preheated through waste heat in the chimney. Under the action of a smoke induced draft fan, smoke enters the U-shaped convoluted air channel to exchange heat with cold air. The cold air and the high-heat smoke exchange heat in the heat exchange box body to preheat the cold air, and the heat exchange box body realizes heat preservation through the heat preservation box body filled with paraffin and the heat preservation layer, so that the heat loss of the smoke is reduced. The air induced draft fan and the smoke induced draft fan are preferably induced draft fans produced by Suzhou full-wind environmental protection technology Co., Ltd, Shandong Beizhou group air conditioning equipment Co., Ltd, Shanghai and Xin electromechanical technology Co., Ltd, Suzhou rui and warming and ventilating equipment engineering Co., Ltd, Kun shan Xin Xu electromechanical Co., Ltd, Zibo Yue environmental protection equipment Co., Ltd, Shandong Miba Co., Ltd, Nantong Dadong Fan effective Co., Ltd, and Foshan Yue Xiu Fan manufacturing Co., Ltd.
Claims (3)
1. The utility model provides a formaldehyde production heat transfer device which characterized in that: the heat exchange device comprises a heat exchange box (1), a U-shaped preheating pipe (2), a chimney (3), a flue gas induced draft fan (4) and an air induced draft fan (5); the heat exchange box (1) comprises a heat exchange box body (11), a heat preservation box body (12), a U-shaped rotary flue gas channel (20) and a U-shaped rotary air channel (19); the U-shaped convolution smoke channel (20) is positioned in the heat exchange box body (11), the bottom of the U-shaped convolution smoke channel (20) is welded at the bottom of the heat exchange box body (11) through a supporting plate, a smoke inlet pipe (17) is arranged at one end of the U-shaped convolution smoke channel (20), a smoke outlet pipe (16) is arranged at the other end of the U-shaped convolution smoke channel, the U-shaped convolution air channel (19) is positioned in the U-shaped convolution smoke channel (20), the bottom of the U-shaped convolution air channel (19) is welded at the bottom of the U-shaped convolution smoke channel (20) through the supporting plate, an air outlet pipe (18) is arranged at one end of the U-shaped convolution air channel; the heat exchange box body (11) is positioned in the heat preservation box body (12), the bottom of the heat exchange box body (11) is welded at the bottom of the heat preservation box body (12) through a supporting plate, paraffin (13) is arranged in annular cavities of the heat preservation box body (12) and the heat exchange box body (11), and a heat preservation layer (14) is arranged outside the heat preservation box body (12); the air inlet of the air induced draft fan (5) is communicated with an air outlet pipe (18) of a U-shaped convolution air channel (19), an air inlet pipe (15) of the U-shaped convolution air channel (19) is communicated with the U-shaped preheating pipe (2), the U-shaped preheating pipe (2) is positioned in a chimney (3), the air inlet of the smoke induced draft fan (4) is communicated with a smoke outlet pipe (16) of the U-shaped convolution smoke channel (20), and the air outlet of the smoke induced draft fan is communicated with the bottom of the chimney (3).
2. The formaldehyde production heat exchange device of claim 1, wherein: the heat insulation material of the heat insulation layer (14) is made of polyurethane foam.
3. The formaldehyde production heat exchange device of claim 1 or 2, wherein: the air inlet of the U-shaped preheating pipe (2) is positioned at the bottom of the chimney (3) and extends to the outside of the chimney (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022752033.5U CN213631696U (en) | 2020-11-25 | 2020-11-25 | Formaldehyde production heat transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022752033.5U CN213631696U (en) | 2020-11-25 | 2020-11-25 | Formaldehyde production heat transfer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213631696U true CN213631696U (en) | 2021-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022752033.5U Active CN213631696U (en) | 2020-11-25 | 2020-11-25 | Formaldehyde production heat transfer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213631696U (en) |
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2020
- 2020-11-25 CN CN202022752033.5U patent/CN213631696U/en active Active
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