Constant-temperature dehumidification system suitable for zeolite rotating wheel

Abstract

The utility model discloses a constant temperature dehumidification system suitable for a zeolite rotating wheel in the field of waste gas treatment, which comprises a waste gas pretreatment box, a zeolite rotating wheel absorption device and a thermal oxidation device, a waste gas temporary storage cavity, a waste gas dehumidification cavity and a constant temperature waste gas cavity are sequentially arranged in the waste gas pretreatment box from left to right; a waste gas inlet is arranged corresponding to the waste gas temporary storage cavity, a surface air cooler is arranged corresponding to the waste gas dehumidification cavity, a hot gas inlet and a waste gas outlet are respectively arranged corresponding to the constant-temperature waste gas cavity, the surface air cooler is connected with a refrigeration device, the zeolite rotating wheel absorption device comprises a treatment area and a conveying area, and the waste gas outlet is communicated with the input end of the treatment area. The thermal oxidation device comprises a waste gas treatment port and a hot gas outlet, the waste gas treatment port is communicated with the output end of the treatment area, the hot gas outlet is communicated with the input end of the conveying area, and the output end of the conveying area is communicated with the hot gas inlet through a discharge pipeline. The device can reduce the humidity of waste gas and ensure the normal operation of subsequent equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment, and particularly relates to a constant temperature dehumidification system suitable for a zeolite wheel. Background Art

[0002] In the existing motor production process, in order to ensure the insulation performance of the motor, after the winding is wound, the rotor or stator needs to be sprayed or immersed in insulating paint, and then a drying process is carried out. The exhaust gas generated during drying contains a large amount of volatile organic compounds and moisture. Usually, a spray tower is used to wash the exhaust gas to purify, remove dust, and cool the gas.

[0003] The zeolite wheel is an efficient and environmentally friendly waste gas treatment equipment, and the waste gas humidity is an important factor affecting the adsorption efficiency of the zeolite wheel. The waste gas humidity after spray washing and cooling is higher than 90%. When the humidity is too high, it will not only reduce the waste gas purification efficiency, but also cause equipment failure. Therefore, it is necessary to solve the temperature and humidity problems of the zeolite wheel in the waste gas pretreatment stage. Utility Model Content

[0004] The utility model aims to provide a constant temperature dehumidification system suitable for a zeolite wheel, which can reduce the humidity of exhaust gas and control the humidity of exhaust gas before entering the zeolite wheel to ≤75%, thereby ensuring the normal operation of subsequent equipment.

[0005] The purpose of the utility model is achieved as follows: a constant temperature dehumidification system suitable for a zeolite rotor, comprising a waste gas pretreatment box, a zeolite rotor absorption device and a thermal oxidation device, wherein the waste gas pretreatment box is provided with a waste gas temporary storage chamber, a waste gas dehumidification chamber and a constant temperature waste gas chamber from left to right, a waste gas inlet is provided corresponding to the waste gas temporary storage chamber, a surface cooler is provided corresponding to the waste gas dehumidification chamber, a hot gas inlet and a waste gas outlet are provided corresponding to the constant temperature waste gas chamber, the surface cooler is connected to the refrigeration device, the zeolite rotor absorption device comprises a treatment area and a conveying area, the waste gas outlet is connected to the input end of the treatment area, the thermal oxidation device comprises a waste gas treatment port and a hot gas outlet, the waste gas treatment port is connected to the output end of the treatment area, the hot gas outlet is connected to the input end of the conveying area, and the output end of the conveying area is connected to the hot gas inlet through a discharge pipe.

[0006] When the utility model is used, high-humidity exhaust gas enters the exhaust gas pretreatment box from the exhaust gas inlet, and water is used as a heat exchange medium to cool the surface of the surface cooler to make its temperature lower than the exhaust gas dew point temperature. Then, the water vapor in the exhaust gas will condense into water droplets on the surface of the surface cooler, and the moisture in the exhaust gas will decrease as the temperature decreases. The exhaust gas enters the constant temperature exhaust gas chamber after being dehumidified by the surface cooler. At the same time, the high-temperature tail gas generated by the oxidation-reduction reaction enters the constant temperature exhaust gas chamber through the hot gas inlet to mix and heat the exhaust gas. As the gas temperature increases, the corresponding saturated water vapor content increases. When the gas temperature of the same water content increases, its relative humidity will decrease, thereby further reducing the exhaust gas humidity. Compared with the prior art, the beneficial effect of the utility model is that the waste heat generated by the thermal oxidation device is used to reduce the relative humidity of the exhaust gas, and the technical solution of energy recovery is adopted, which not only improves the utilization rate of energy, but also improves the adsorption efficiency of the zeolite wheel absorption device.

[0007] As a further improvement of the utility model, it also includes a spray tower, a spray tower water tank and a water receiving tray. The water receiving tray is arranged below the surface cooler and is connected to the spray tower water tank through a condensation drain pipe. The spray tower is connected to the exhaust gas inlet through a high-humidity exhaust gas pipe.

[0008] As a further improvement of the present invention, the exhaust gas inlet is arranged on the left side of the exhaust gas pretreatment box, the hot gas inlet is arranged on the upper side of the exhaust gas pretreatment box, the exhaust gas outlet is arranged on the right side of the exhaust gas pretreatment box, and a wire mesh filter is arranged between the hot gas inlet and the exhaust gas outlet corresponding to the constant temperature exhaust gas chamber.

[0009] As a further improvement of the present invention, the exhaust gas pretreatment box includes a first inspection door and a second inspection door, the first inspection door is arranged between the exhaust gas inlet and the surface cooler, and the second inspection door is arranged between the surface cooler and the wire mesh filter.

[0010] As a further improvement of the present invention, the refrigeration device includes a refrigeration unit and a chilled water tank, the chilled water tank includes a cold water outlet and a cold water inlet, the cold water outlet is connected to the input end of the surface cooler through a cold water inlet pipe, the output end of the surface cooler is connected to the input end of the refrigeration unit through a cold water outlet pipe, and the output end of the refrigeration unit is connected to the cold water inlet through a chilled water pipe.

[0011] As a further improvement of the utility model, the zeolite rotor absorption device includes a driving motor, a driving wheel is coaxially arranged at the output end of the driving motor, the driving wheel is connected to the driven wheel through a synchronous belt, and the driven wheel is coaxially arranged with the zeolite rotor.

[0012] As a further improvement of the present invention, the processing area includes an adsorption area and a desorption area, and the airflow direction of the transmission area is opposite to that of the processing area.

[0013] As a further improvement of the present invention, the thermal oxidation device further comprises a combustion chamber, and a heater is arranged in the combustion chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model.

[0015] Figure 2 This is a schematic structural diagram of the second embodiment of the present utility model.

[0016] Among them, 1 exhaust gas pretreatment box, 101 exhaust gas inlet, 102 hot gas inlet, 103 exhaust gas outlet, 2 zeolite rotor, 3 drive motor, 4 thermal oxidation device, 401 combustion chamber, 402 heater, 5 surface cooler, 6 wire mesh filter, 7 chilled water tank, 701 cold water outlet, 702 cold water inlet, 8 refrigeration unit, 9 cold water inlet pipe, 10 cold water outlet pipe, 11 driving wheel, 12 synchronous belt, 13 driven wheel, 14 discharge pipe, 15 spray tower, 16 high humidity exhaust pipe, 17 condensation drain pipe, 18 first inspection door, 19 second inspection door, 20 spray water pump. DETAILED DESCRIPTION Embodiment 1

[0017] like Figure 1As shown, a constant temperature dehumidification system suitable for a zeolite wheel is provided, including an exhaust gas pretreatment box 1, a zeolite wheel absorption device, a thermal oxidation device 4 and a water receiving tray; the exhaust gas pretreatment box 1 is provided with an exhaust gas temporary storage chamber, an exhaust gas dehumidification chamber and a constant temperature exhaust gas chamber from left to right, an exhaust gas inlet 101 is provided corresponding to the exhaust gas temporary storage chamber, a surface cooler 5 is provided corresponding to the exhaust gas dehumidification chamber, a hot gas inlet 102 and an exhaust gas outlet 103 are provided corresponding to the constant temperature exhaust gas chamber, and the exhaust gas inlet 101 is provided at the exhaust gas temporary storage chamber, and a surface cooler 5 is provided corresponding to the exhaust gas dehumidification chamber, and a hot gas inlet 102 and an exhaust gas outlet 103 are provided respectively. On the left side of the pretreatment box 1, the hot gas inlet 102 is arranged on the upper side of the exhaust gas pretreatment box 1, and the exhaust gas outlet 103 is arranged on the right side of the exhaust gas pretreatment box 1. A wire mesh filter 6 is arranged between the hot gas inlet 102 and the exhaust gas outlet 103 of the constant temperature exhaust gas chamber; the surface cooler 5 is connected to the refrigeration device, and the refrigeration device includes a refrigeration unit 8 and a chilled water tank 7. The chilled water tank 7 includes a cold water outlet 701 and a cold water inlet 702. The cold water outlet 701 is connected to the input end of the surface cooler 5 through a cold water inlet pipe 9. The output end of the surface cooler 5 is connected to the input end of the refrigerating unit 8 through the cold water outlet pipe 10, and the output end of the refrigerating unit 8 is connected to the cold water inlet 702 through the freezing water pipe; the water receiving pan is arranged below the surface cooler 5 and is connected to the sewage pipe network through the condensation drain pipe 17; the zeolite rotor absorption device includes a driving motor 3, a zeolite rotor 2, a treatment area and a transmission area, the exhaust gas outlet 103 is connected to the input end of the treatment area, the output end of the driving motor 3 is coaxially provided with a driving wheel 11, the driving wheel 11 is connected to the driven wheel 13 through a synchronous belt 12, and the driven wheel 13 is coaxially arranged with the zeolite rotor 2; the thermal oxidation device 4 includes a combustion chamber 401, an exhaust gas treatment port and a hot gas outlet, a heater 402 is arranged in the combustion chamber 401, the exhaust gas treatment port is connected to the output end of the treatment area, the hot gas outlet is connected to the input end of the transmission area, and the output end of the transmission area is connected to the hot gas inlet 102 through the discharge pipe 14; the treatment area includes an adsorption area and a desorption area, and the airflow direction of the transmission area is opposite to that of the airflow direction of the treatment area. Embodiment 2

[0018] like Figure 2 As shown, the difference between this embodiment and the first embodiment is that: this system also includes a spray tower 15, a spray tower water tank and a spray water pump 20, the spray tower 15 is connected to the exhaust gas inlet 101 through a high-humidity exhaust pipe 16; the water receiving tray is connected to the spray tower water tank through a condensation drain pipe 17; the exhaust gas pretreatment box 1 includes a first inspection door 18 and a second inspection door 19, the first inspection door 18 is arranged between the exhaust gas inlet 101 and the surface cooler 5, and the second inspection door 19 is arranged between the surface cooler 5 and the wire mesh filter 6.

[0019] When the utility model is in use, the high-humidity exhaust gas discharged from the spray tower 15 enters the exhaust gas pretreatment box 1 through the exhaust gas inlet 101, and uses water as a heat exchange medium to cool the surface of the surface cooler 5 to make its temperature lower than the dew point temperature of the exhaust gas. Water in the exhaust gas is analyzed and flows down along the finned tubes of the surface cooler 5 to the water receiving tray. The condensed waste water automatically flows out to the water tank of the front spray tower, and then passes into the spray tower 15 through the spray water pump 20 to spray the exhaust gas, thereby forming a recycling of condensed water. The moisture in the exhaust gas decreases as the temperature decreases, and the moisture in the exhaust gas can be further filtered through the wire mesh filter 6 to reduce its absolute humidity. At the same time, the high-temperature exhaust gas generated by the redox reaction enters the constant temperature exhaust chamber through the hot gas inlet 102 to The temperature is mixed and increased. As the gas temperature increases, the corresponding saturated water vapor content increases. When the temperature of the gas with the same water content increases, its relative humidity will decrease, thereby further reducing the humidity of the exhaust gas. The dehumidified exhaust gas is discharged from the exhaust gas outlet 103 to the zeolite wheel 2. The driving motor 3 drives the zeolite wheel 2 to rotate and transmits the adsorbed exhaust gas to the desorption area for desorption. The thermal oxidation device 4 decomposes the desorbed organic waste gas and generates high-temperature gas. The high-temperature gas enters the exhaust gas pretreatment box 1 after passing through the hot gas outlet, the transmission area, the exhaust pipe 14 and the hot gas inlet 102 in turn, thereby increasing the exhaust gas temperature, thereby reducing the relative humidity in the exhaust gas, and ensuring that the exhaust gas humidity entering the wheel is ≤75%, thereby forming a recycling of waste heat.

[0020] The advantages of the utility model are: the water in the chiller can be recycled, and the waste condensed water can be recycled, so the whole process does not generate wastewater, which is environmentally friendly and energy-saving; the thermal oxidation treatment device adopts high-temperature oxidation reaction, which can completely decompose harmful substances in organic waste gas, and the treatment effect is stable and reliable; this system can be combined with PLC program control, and according to the temperature and humidity of the gas, it automatically controls the valve switches, desorption temperature, and desorption air volume of each inlet and outlet of the equipment to ensure purification efficiency and energy consumption.

[0021] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A constant temperature dehumidification system suitable for a zeolite rotor, characterized in that: It includes a waste gas pretreatment box, a zeolite rotor absorption device and a thermal oxidation device. The waste gas pretreatment box is provided with a waste gas temporary storage chamber, a waste gas dehumidification chamber and a constant temperature waste gas chamber from left to right. A waste gas inlet is provided corresponding to the waste gas temporary storage chamber, a surface cooler is provided corresponding to the waste gas dehumidification chamber, and a hot gas inlet and a waste gas outlet are provided corresponding to the constant temperature waste gas chamber. The surface cooler is connected to the refrigeration device. The zeolite rotor absorption device includes a treatment area and a transmission area. The waste gas outlet is connected to the input end of the treatment area. The thermal oxidation device includes a waste gas treatment port and a hot gas outlet. The waste gas treatment port is connected to the output end of the treatment area, the hot gas outlet is connected to the input end of the transmission area, and the output end of the transmission area is connected to the hot gas inlet through a discharge pipe.

2. A constant temperature dehumidification system suitable for a zeolite wheel according to claim 1, characterized in that: It also includes a spray tower, a spray tower water tank and a water receiving tray. The water receiving tray is arranged below the surface cooler and is connected to the spray tower water tank through a condensation drain pipe. The spray tower is connected to the exhaust gas inlet through a high-humidity exhaust gas pipe.

3. A constant temperature dehumidification system suitable for a zeolite wheel according to claim 1, characterized in that: The exhaust gas inlet is arranged on the left side of the exhaust gas pretreatment box, the hot gas inlet is arranged on the upper side of the exhaust gas pretreatment box, the exhaust gas outlet is arranged on the right side of the exhaust gas pretreatment box, and a wire mesh filter is arranged between the hot gas inlet and the exhaust gas outlet of the constant temperature exhaust gas chamber.

4. A constant temperature dehumidification system suitable for a zeolite wheel according to claim 3, characterized in that: The exhaust gas pretreatment box includes a first inspection door and a second inspection door, wherein the first inspection door is arranged between the exhaust gas inlet and the surface cooler, and the second inspection door is arranged between the surface cooler and the wire mesh filter.

5. A constant temperature dehumidification system suitable for a zeolite wheel according to claim 1, characterized in that: The refrigeration device includes a refrigeration unit and a chilled water tank, the chilled water tank includes a cold water outlet and a cold water inlet, the cold water outlet is connected to the input end of the surface cooler through a cold water inlet pipe, the output end of the surface cooler is connected to the input end of the refrigeration unit through a cold water outlet pipe, and the output end of the refrigeration unit is connected to the cold water inlet through a chilled water pipe.

6. A constant temperature dehumidification system suitable for a zeolite wheel according to claim 1, characterized in that: The zeolite rotor absorption device comprises a driving motor, a driving wheel is coaxially arranged at the output end of the driving motor, the driving wheel is connected to the driven wheel through a synchronous belt, and the driven wheel is coaxially arranged with the zeolite rotor.

7. A constant temperature dehumidification system suitable for a zeolite wheel according to claim 1, characterized in that: The processing area includes an adsorption area and a desorption area, and the airflow direction of the transmission area is opposite to that of the processing area.

8. A constant temperature dehumidification system suitable for a zeolite wheel according to claim 1, characterized in that: The thermal oxidizer further comprises a combustion chamber, wherein a heater is disposed in the combustion chamber.

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