CN215261250U - Cooling and dehumidifying heat exchanger - Google Patents
Cooling and dehumidifying heat exchanger Download PDFInfo
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- CN215261250U CN215261250U CN202121451550.7U CN202121451550U CN215261250U CN 215261250 U CN215261250 U CN 215261250U CN 202121451550 U CN202121451550 U CN 202121451550U CN 215261250 U CN215261250 U CN 215261250U
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- heat exchanger
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Abstract
The utility model discloses a heat exchanger with cooling dehumidification function, include the reheat heat exchanger and the condensation heat exchanger, the cooling blower who is shell and tube type heat exchanger together, reheat heat exchanger and condensation heat exchanger's tube side head and the tail directly communicate, and the tube side export of the below of condensation heat exchanger and reheat heat exchanger's shell side entry intercommunication, cooling blower and the shell side intercommunication with condensation heat exchanger set up the condensate discharge port at condensation heat exchanger's tube side export minimum. The damp-heat gas is cooled to a saturated state through tube passes of the reheating heat exchanger and the condensing heat exchanger, condensed water is discharged, and the temperature is raised to a state far away from a water dew point when the damp-heat gas passes through a shell pass of the reheating heat exchanger. The device has simple structure and lower manufacturing and using cost.
Description
Technical Field
The utility model relates to a heat exchanger with cooling dehumidification function.
Background
In some industrial applications, such as adsorption concentration, there are a lot of water vapor and acidic gas components in the desorbed gas from malodorous gas treatment, and when the gas temperature is lowered to below the dew point temperature, acid corrosion may occur to the transportation pipeline and the subsequent equipment. The existing flue gas dehumidification equipment is usually complex and is not suitable for reducing the temperature of gas generally, and the dehumidification process of desorption gas only needs to adjust the temperature and humidity of the gas to be far away from a dew point, so that the actual requirement can be met in a state of avoiding pipeline corrosion.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a cooling dehumidification heat exchanger, include the reheat heat exchanger and the condensation heat exchanger, the cooling blower who is shell and tube type heat exchanger together, reheat heat exchanger and condensation heat exchanger's tube side head and the tail directly communicate, reheat heat exchanger is under last condensation heat exchanger, and the tube side export of the below of condensation heat exchanger communicates with reheat heat exchanger's shell side entry, cooling blower and the shell side intercommunication with condensation heat exchanger. And a condensate outlet is arranged at the lowest point of the tube side outlet of the condensing heat exchanger.
Preferably, fins can be arranged outside the heat exchange tubes of the reheating heat exchanger and the condensing heat exchanger, so that the heat exchange efficiency is improved.
Alternatively, a condensation dehumidifier with external power drive can be inserted into a pipeline connecting the tube side outlet of the condensation heat exchanger and the shell side inlet of the reheating heat exchanger to further reduce the gas humidity, so that the deep dehumidification heat exchanger is formed.
Alternatively, the heat exchange tubes of the reheat heat exchanger and the condensing heat exchanger may be made of a corrosion-resistant heat conductive material, or a corrosion-resistant coating may be provided on the inner surface of the heat exchange tubes. Therefore, the corrosion resistance of the cooling and dehumidifying heat exchanger can be obviously improved.
The positive effects of the utility model are that, damp and hot gas cools down to the saturated condition through reheat heat exchanger and condensation heat exchanger's tube side, discharges the comdenstion water to the state of keeping away from the water dew point of rising temperature when the shell side through reheat heat exchanger. The temperature of the desorbed gas subjected to dehumidification treatment is reduced, and the subsequent changeover valve of the desorbed gas incineration equipment RTO is protected from high-temperature damage. The device has simple structure and lower manufacturing and using cost.
The invention will be further explained with reference to the drawings and the specific embodiments.
Drawings
FIG. 1 is a schematic view of the basic structure of a cooling and dehumidifying heat exchanger
FIG. 2 is a schematic view of a deep dehumidification heat exchanger
FIG. 3 is a schematic diagram of an automatic control deep dehumidification heat exchanger
Detailed Description
Example 1A cooling and dehumidifying heat exchanger is shown in figure 1.
The structure composition includes: a shell-and-tube reheating heat exchanger 1, a shell-and-tube condensing heat exchanger 2 and a cooling fan 3. The tube side of the reheating heat exchanger 1 is directly communicated with the tube side of the condensing heat exchanger 2 end to end, the reheating heat exchanger 1 is arranged above the condensing heat exchanger 2, a tube side outlet 22 below the condensing heat exchanger 2 is communicated with a shell side inlet 13 of the reheating heat exchanger, the cooling fan 3 is communicated with the shell side of the condensing heat exchanger, and large-air-volume ambient air is introduced into the shell side of the condensing heat exchanger. The high volume of ambient air, shown as open arrows in the figure. The condensate outlet 25 of the drain valve 41 is arranged at the lowest point of the tube side outlet 22 of the condensing heat exchanger 2.
The desorption gas to be treated is shown as a single-line arrow in the figure, enters from a tube pass inlet 11 of the reheating heat exchanger 1, enters a shell pass of the reheating heat exchanger 1 after passing through tube passes of the reheating heat exchanger 1 and the condensing heat exchanger 2, and is finally discharged from a shell pass outlet 24 of the reheating heat exchanger, so that the whole temperature reduction and dehumidification treatment process is completed. The condensed water carrying corrosive acid liquid produced is discharged from the condensate discharge port 25 through the drain valve 41.
In order to enhance the heat exchange efficiency, fins 5 can be arranged outside the heat exchange tubes of the reheating heat exchanger 1 and the condensing heat exchanger 2 to improve the heat exchange efficiency.
Example 2A deep dehumidification heat exchanger, see figure 2.
Under some conditions, for example, the temperature of the desorbed gas is not high (lower than 100 ℃, but higher than the ambient temperature), and the relative humidity reaches or approaches the saturation state, the dehumidification effect of the technical scheme of embodiment 1 may not be significant enough, and the effect of dehumidification to prevent acid corrosion may not be achieved.
The technical scheme of the embodiment 1 is improved. A pipeline which is connected with a tube pass outlet of the condensing heat exchanger and a shell pass inlet of the reheating heat exchanger is provided with a condensing dehumidifier 6 with external power drive to further reduce the gas humidity, so that the cooling dehumidifying heat exchanger becomes a deep dehumidifying heat exchanger. The dehumidifier 6 is also connected to a drain valve 42, and the discharged condensed water is collected with the condensed water discharged from the drain valve 41 and discharged together. When the temperature of the desorbed gas is further reduced and the dehumidification function of the heat exchanger is further deteriorated, the desorption gas entering a downstream pipeline system possibly generates condensed acid liquid, the condensation dehumidifier 6 plays a final role of 'gate keeper'. Once the downstream pipeline generates acid liquor, the temperature of the desorbed gas is recovered to be normal, and the dehumidification function of the heat exchanger is not easy to naturally eliminate when working normally, so that the corrosion damage of the downstream pipeline system is caused.
Example 3An automatic control deep dehumidification heat exchanger is shown in figure 3.
Based on optimization for operational economics, a dehumidifier feedback control arrangement is provided comprising a controller 71 and a relative humidity detector 72 connected behind the shell side outlet 24 of the reheat heat exchanger. The controller 71 controls the start and stop of the compressor 61 of the dehumidifier 6 and the operation parameters according to the feedback data of the rh detector 72. The feedback control device of the condensation dehumidifier 6 is usually set to a conditional start operation mode, i.e. when the cooling and dehumidifying functions of the heat exchanger cannot meet the dehumidifying requirements of the system, the operation is started, and the operation parameters are adjusted according to the relative humidity value measured by the relative humidity detector 72.
Claims (5)
1. The utility model provides a cooling dehumidification heat exchanger, includes the reheat heat exchanger and the condensation heat exchanger, the cooling blower that are shell and tube heat exchanger together, the tube side head and the tail of reheat heat exchanger and condensation heat exchanger directly communicate, and reheat heat exchanger is under last condensation heat exchanger, and the tube side export of the below of condensation heat exchanger and reheat heat exchanger's shell side entry intercommunication, cooling blower and the shell side intercommunication with condensation heat exchanger set up the condensate discharge port in condensation heat exchanger's tube side export minimum.
2. The cooling and dehumidifying heat exchanger of claim 1 wherein fins are provided outside the heat exchange tubes of the reheat heat exchanger and the condensing heat exchanger.
3. The cooling and dehumidifying heat exchanger of claim 1 wherein a condensing dehumidifier with an external power drive is provided in a pipe connecting the tube-side outlet of the condensing heat exchanger and the shell-side inlet of the reheating heat exchanger.
4. A cooling and dehumidifying heat exchanger as claimed in any one of claims 1 to 3, wherein the heat exchange tubes of the reheating heat exchanger and the condensing heat exchanger are made of a corrosion-resistant heat-conductive material, or a corrosion-resistant coating is provided on the inner surface of the heat exchange tubes.
5. The cooling and dehumidifying heat exchanger of claim 3 or 4, further comprising a dehumidifier feedback control device comprising a controller and a relative humidity detector connected to the back of the shell side outlet of the reheating heat exchanger, wherein the controller controls the start-stop and operation parameters of the dehumidifier according to the feedback data of the relative humidity detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121451550.7U CN215261250U (en) | 2021-06-17 | 2021-06-17 | Cooling and dehumidifying heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121451550.7U CN215261250U (en) | 2021-06-17 | 2021-06-17 | Cooling and dehumidifying heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215261250U true CN215261250U (en) | 2021-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121451550.7U Active CN215261250U (en) | 2021-06-17 | 2021-06-17 | Cooling and dehumidifying heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215261250U (en) |
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2021
- 2021-06-17 CN CN202121451550.7U patent/CN215261250U/en active Active
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