Drying machine capable of utilizing condensate water and waste water

Abstract

The utility model relates to the technical field of condensate water recovery, in particular to a drying machine utilizing condensate water waste water, which comprises a first heat exchanger, a second heat exchanger connected onto the first heat exchanger through a pipeline, a variable-frequency condenser connected onto the second heat exchanger through a pipeline, and a condenser connected onto the variable-frequency condenser through a pipeline. The variable-frequency condenser is connected with a drying filter through a pipeline, the drying filter is connected with an expansion valve through a pipeline, the expansion valve is connected with an evaporator through a guide pipe, the evaporator is connected with a second adsorption tower through a pipeline, and the second adsorption tower is connected with a first adsorption tower through a pipeline; the evaporator is connected with a third heat exchanger through a pipeline, and the third heat exchanger is connected with the first heat exchanger through a pipeline. According to the utility model, the condensate water can be recycled, the energy consumption is reduced, and the energy-saving effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of condensate recovery technology, and in particular to a dryer for the utilization of condensate wastewater. Background Technology

[0002] In common compressed air dryers, when in use, hot and humid compressed air flows into the heat exchanger and exchanges heat with the cold air discharged from the evaporator, which lowers the temperature of the compressed air entering the evaporator. The cooled compressed air then flows into the evaporator and exchanges heat with the refrigerant. The heat in the compressed air is carried away by the refrigerant, and the temperature of the compressed air drops rapidly. The moisture in the humid air quickly condenses into water droplets as it reaches saturation temperature. After being separated by a steam-water separator, the condensate is discharged from the automatic drain valve. There is no condensate recovery. To solve this problem, we propose a dryer that utilizes condensate wastewater. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies that do not recover condensate water, and to propose a dryer for the utilization of condensate wastewater.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Design a dryer for utilizing condensate wastewater, comprising a first heat exchanger, a second heat exchanger connected to the first heat exchanger via a pipe, a variable frequency condenser connected to the second heat exchanger via a pipe, a drying filter connected to the variable frequency condenser via a pipe, an expansion valve connected to the drying filter via a pipe, an evaporator connected to the expansion valve via a conduit, a second adsorption tower connected to the evaporator via a pipe, a first adsorption tower connected to the second adsorption tower via a pipe, and a third heat exchanger connected to the evaporator via a pipe, the third heat exchanger being connected to the first heat exchanger via a pipe.

[0006] Preferably, a drain is connected to the third heat exchanger via a pipe.

[0007] Preferably, the second heat exchanger is connected to a heater via a pipe, the heater is connected to the first adsorption tower and the second adsorption tower via a pipe, and the heater is connected to the third heat exchanger via a pipe.

[0008] Preferably, the first adsorption tower and the second adsorption tower are adsorption-type adsorption towers.

[0009] Preferably, the variable frequency condenser is a variable frequency fan.

[0010] Preferably, the evaporator is equipped with a phase change energy storage material.

[0011] Preferably, the phase change energy storage material is paraffin wax.

[0012] Preferably, the evaporator is connected to a compressor via a pipe, and the compressor is connected to a second heat exchanger via a pipe.

[0013] The present invention proposes a dryer for the utilization of condensate wastewater, which has the following advantages: it can recycle and reuse condensate water, while saving energy and reducing energy consumption, thus achieving energy conservation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a dryer for utilizing condensate wastewater proposed in this utility model.

[0015] In the diagram: 1. First heat exchanger; 2. Evaporator; 3. Variable frequency condenser; 4. Dryer filter; 5. Expansion valve; 6. Hot gas bypass valve; 7. Compressor; 8. Second heat exchanger; 9. Heater; 10. Drainer; 11. Third heat exchanger; 12. First adsorption tower; 13. Second adsorption tower. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1 A dryer for utilizing condensate wastewater includes a first heat exchanger 1, to which a second heat exchanger 8 is connected via a pipe. High-temperature, high-humidity compressed air enters the first heat exchanger 1 and exchanges heat with the compressed air from the adsorption tower for pre-cooling. Then, it enters the evaporator 2 and exchanges heat with the refrigerant to cool to 2-10°C. Considering the variable gas load, a phase change energy storage material is added to the evaporator 2. When the load is low, excess refrigeration capacity of the refrigeration system can be stored in the phase change material, allowing the compressor 7 to be shut down for energy saving. The compressed air, cooled to 2-10°C, after filtering out the condensed liquid water, enters the adsorption tower for further drying before returning to the first heat exchanger 1 to reheat and complete the overall drying process.

[0018] The second heat exchanger 8 is connected to a variable frequency condenser 3 via a pipe. The variable frequency condenser 3 is connected to a dryer filter 4 via a pipe. The dryer filter 4 is connected to an expansion valve 5 via a pipe. The expansion valve 5 is connected to an evaporator 2 via a conduit. The evaporator 2 is connected to a second adsorption tower 13 via a pipe. The second adsorption tower 13 is connected to a first adsorption tower 12 via a pipe. The evaporator 2 is connected to a third heat exchanger 11 via a pipe. The third heat exchanger 11 is connected to the first heat exchanger 1 via a pipe.

[0019] A compressor 7 is connected to the evaporator 2 via a pipe. A bypass is connected between the compressor 7 and the evaporator 2, and a hot gas bypass valve 6 is installed on the bypass. A second heat exchanger 8 is connected to the compressor 7 via a pipe. The compressor 7 discharges high-temperature and high-pressure gaseous refrigerant, which enters the second heat exchanger 8. This is a heat recovery design. During the desorption process in the adsorption tower, the regeneration gas source exchanges heat with the refrigerant to raise its temperature, reducing the energy consumption of the downstream heater. The refrigerant, after initial cooling, enters the variable frequency condenser 3 to condense into liquid refrigerant. The variable frequency condenser 3 is a variable frequency fan. Since some heat is taken during the desorption heating stage, the high-pressure liquid refrigerant after condensation is depressurized and cooled by the expansion valve 5, enters the evaporator 2 to exchange heat with compressed air for evaporation, and then returns to the compressor 7 to complete the cycle.

[0020] A drainer 10 is connected to the third heat exchanger 11 via a pipe. The condensate is collected in the drainer 10. When the drainer 10 is running, the compressed air at the outlet of the evaporator 2 will continuously generate condensate. The low-temperature condensate is collected through the third heat exchanger 11 and used to reduce the temperature of the regeneration gas source during the adsorbent cooling stage, thereby saving gas consumption.

[0021] A heater 9 is connected to the second heat exchanger 8 via a pipe. The heater 9 is connected to the first adsorption tower 12 and the second adsorption tower 13 via pipes. The heater 9 is also connected to the third heat exchanger 11 via pipes.

[0022] The first adsorption tower 12 and the second adsorption tower 13 are adsorption-type adsorption towers.

[0023] Evaporator 2 is equipped with a phase change energy storage material, which is paraffin wax.

[0024] During operation, air enters through the inlet of the first heat exchanger 1, then the second heat exchanger 8, and after being cooled by the variable frequency condenser 3, it enters the dryer filter 4 and the expansion valve 5 before entering the evaporator 2 containing phase change energy storage material. It then enters the second adsorption tower 13 and the first adsorption tower 12 to complete heat exchange. The condensate flows through the pipeline into the third heat exchanger 11, and the original condensate is directly discharged. Since the condensate has a certain degree of coldness, it can store the phase change energy storage material in the third heat exchanger 11. When the compressed air that has completed heat exchange from the second adsorption tower 13 and the first adsorption tower 12 enters the third heat exchanger 11, the waste cold stored by the phase change material can be fully utilized, reducing the overall energy consumption of the equipment.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dryer of condensate wastewater utilization, comprising a first heat exchanger (1), characterized in that, The first heat exchanger (1) is connected with a second heat exchanger (8) through a pipeline, the second heat exchanger (8) is connected with a variable frequency condenser (3) through a pipeline, the variable frequency condenser (3) is connected with a dry filter (4) through a pipeline, the dry filter (4) is connected with an expansion valve (5) through a pipeline, the expansion valve (5) is connected with an evaporator (2) through a pipeline, the evaporator (2) is connected with a second adsorption tower (13) through a pipeline, the second adsorption tower (13) is connected with a first adsorption tower (12) through a pipeline, the evaporator (2) is connected with a third heat exchanger (11) through a pipeline, and the third heat exchanger (11) is connected with the first heat exchanger (1) through a pipeline.

2. The dryer of claim 1, wherein The third heat exchanger (11) is connected with a water drainer (10) through a pipeline.

3. The dryer of claim 1, wherein The second heat exchanger (8) is connected with a heater (9) through a pipeline, the heater (9) is connected with the first adsorption tower (12) and the second adsorption tower (13) through a pipeline, and the heater (9) is connected with the third heat exchanger (11) through a pipeline.

4. The dryer of claim 3, wherein The first adsorption tower (12) and the second adsorption tower (13) are adsorption type adsorption towers.

5. The dryer of claim 1, wherein The variable frequency condenser (3) is a variable frequency fan.

6. The dryer of claim 1, wherein The evaporator (2) is provided with phase change energy storage material.

7. The dryer of claim 6, wherein The phase change energy storage material is paraffin.

8. The dryer of claim 1, wherein The evaporator (2) is connected with a compressor (7) through a pipeline, and the compressor (7) is connected with the second heat exchanger (8) through a pipeline.

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