Asphalt wastewater evaporation device

Abstract

The utility model discloses an asphalt wastewater evaporation device, which comprises a stock solution inlet, an evaporation main body, a condenser and a vacuum pump which are sequentially connected, a heat exchange channel is arranged in the evaporation main body, the heat exchange channel comprises a hot water inlet and a hot water outlet, and the evaporation main body is further provided with a first liquid inlet, a steam outlet and a first liquid outlet. The first liquid inlet is formed in the lower part of the evaporation main body, the first liquid inlet is communicated with the stock solution inlet so as to be used for introducing asphalt wastewater, the steam outlet is formed in the top of the evaporation main body, and the first liquid outlet is formed in the bottom of the evaporation main body and is communicated with the concentrated solution outlet; the condenser comprises a steam inlet, a steam outlet, a distilled water outlet, a cooling water inlet and a cooling water outlet, the steam inlet is communicated with the steam outlet of the evaporation main body, and the steam outlet is communicated with the vacuum pump so as to be communicated with the evaporation main body to form steam in the evaporation main body. The structure is simple.

Description

Technical Field

[0001] This utility model relates to the field of evaporation and concentration, and in particular to an asphalt wastewater evaporation device. Background Technology

[0002] Most evaporation methods on the market use steam heating, which is highly efficient, but requires high-temperature steam or a steam compressor to generate steam. The equipment is expensive, and maintenance and replacement costs are high. Moreover, many companies do not have the capability to provide steam themselves. Summary of the Invention

[0003] The purpose of this invention is to provide an asphalt wastewater evaporation device to solve the problem that existing evaporation devices require expensive equipment such as steam compressors.

[0004] To achieve the above objectives, this utility model provides an asphalt wastewater evaporation device, comprising a raw liquid inlet, an evaporation body, a condenser, and a vacuum pump connected in sequence. The evaporation body is provided with a heat exchange channel, which includes a hot water inlet and a hot water outlet. The evaporation body is also provided with a first liquid inlet, a steam outlet, and a first liquid outlet. The first liquid inlet is located at the lower part of the evaporation body and is connected to the raw liquid inlet for introducing asphalt wastewater. The steam outlet is located at the top of the evaporation body, and the first liquid outlet is located at the bottom of the evaporation body and is connected to the concentrated liquid outlet. The condenser includes a steam inlet, a gas outlet, a distilled water outlet, a cooling water inlet, and a cooling water outlet. The steam inlet is connected to the steam outlet of the evaporation body, and the gas outlet is connected to the vacuum pump to connect the evaporation body to form steam within the evaporation body. The cooling water inlet is used to introduce cooling water into the condenser and cause the steam entering the condenser to form first distilled water, which is discharged through the distilled water outlet.

[0005] Preferably, the heat exchange channel includes a plurality of heat exchange tubes, which are horizontally arranged inside the evaporation body. The hot water inlet and the hot water outlet are both located on the same side of the evaporation body, and the hot water inlet and the hot water outlet are used to communicate with a liquid heat source in the production line.

[0006] Preferably, it further includes a first heat exchanger, which includes a first heat exchange channel and a second heat exchange channel that exchange heat with each other. One end of the first heat exchange channel is connected to the raw liquid inlet, and the other end of the first heat exchange channel is connected to the first liquid inlet on the evaporation body. One end of the second heat exchange channel is connected to the first liquid outlet of the evaporation body, and the other end of the second heat exchange channel is connected to the concentrate outlet.

[0007] Preferably, the system further includes a second heat exchanger, which includes a third heat exchange channel and a fourth heat exchange channel that exchange heat with each other. One end of the third heat exchange channel is connected to the distilled water outlet, and the other end of the third heat exchange channel is connected to the distilled water discharge outlet. One end of the fourth heat exchange channel is connected to the raw liquid inlet, and the other end of the fourth heat exchange channel is connected to the first liquid inlet.

[0008] Preferably, the raw liquid inlet is also connected to a raw liquid tank, the raw liquid tank is connected to a feed pump, and the feed pump is connected to both the first heat exchange channel and the fourth heat exchange channel.

[0009] Preferably, a concentrate tank is provided between the second heat exchange channel and the concentrate outlet, and the concentrate tank is connected to both the second heat exchange channel and the concentrate outlet.

[0010] Preferably, it further includes a first distilled water tank, which is connected to the distilled water outlet of the condenser for introducing first distilled water into the first distilled water tank, and the first distilled water tank is connected to the distilled water outlet.

[0011] Preferably, the first distilled water tank is further provided with an exhaust port, which is connected to the steam inlet of the condenser.

[0012] Preferably, an activated carbon filter is provided between the first distilled water tank and the distilled water outlet to filter the first distilled water to form the second distilled water.

[0013] Compared with the prior art, the asphalt wastewater evaporation device of this utility model includes a raw liquid inlet, an evaporation body, a condenser and a vacuum pump connected in sequence. The evaporation body is provided with a heat exchange channel for introducing a heat source. The asphalt wastewater is evaporated by heating through the vacuum pump and the heat exchange channel. There is no need to set up large equipment such as a steam compressor. It has low cost, simple structure and ingenious design. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the asphalt wastewater evaporation device according to an embodiment of this utility model. Detailed Implementation

[0015] To explain in detail the technical content, structural features, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0016] like Figure 1As shown, this utility model embodiment provides an asphalt wastewater evaporation device, including a raw liquid inlet 1, an evaporation body 3, a condenser 4, and a vacuum pump 5 connected in sequence. The evaporation body 3 has a heat exchange channel 31, which includes a hot water inlet 311 and a hot water outlet 312. The evaporation body 3 also has a first liquid inlet 32, a steam outlet 33, and a first liquid outlet 34. The first liquid inlet 32 ​​is located at the lower part of the evaporation body 3 and is connected to the raw liquid inlet 1 for introducing asphalt wastewater. The steam outlet 33 is located at the top of the evaporation body 3. The liquid outlet 34 is located at the bottom of the evaporator body 3 and is connected to the concentrate outlet 2. The condenser 4 includes a steam inlet 41, an air outlet 42, a distilled water outlet 43, a cooling water inlet 44, and a cooling water outlet 45. The steam inlet 41 is connected to the steam outlet 33 of the evaporator body 3, and the air outlet 42 is connected to the vacuum pump 5 to connect the evaporator body 3 to form steam within the evaporator body 3. The cooling water inlet 44 is used to introduce cooling water into the condenser 4 and cause the steam entering the condenser 4 to form first distilled water, which is discharged through the distilled water outlet 43. Specifically, the hot water inlet 311 is used to introduce a heat source, such as a liquid heat source. Cooling water enters the cooling water inlet 44 through the water source inlet 19 to enter the condenser and exchange heat with the steam. The cooled water after heat exchange is discharged through the cooling water outlet 45 and the water source outlet 20. Asphalt waste liquid enters the evaporation body 3 and soaks the heat exchange channel 31, thereby being heated by the liquid heat source in the heat exchange channel 31. At the same time, the vacuum pump 5 applies negative pressure to the evaporation body 3, so that the asphalt waste liquid is heated and evaporated to generate steam. The steam enters the condenser 4 and is condensed into distilled water for recycling. Non-condensable gas that cannot be condensed is discharged from the non-condensable gas outlet 21 through the vacuum pump 5. The entire device does not have large equipment such as a steam compressor, so the cost is low and the structure is simple.

[0017] The asphalt wastewater evaporation device of this utility model includes a raw liquid inlet 1, an evaporation body 3, a condenser 4, and a vacuum pump 5 connected in sequence. The evaporation body 3 is provided with a heat exchange channel 31 through which a heat source is introduced. The asphalt wastewater is evaporated by heating through the vacuum pump 5 and the heat exchange channel 31. There is no need to set up large equipment such as a steam compressor. The cost is low, the structure is simple, and the design is ingenious.

[0018] In this embodiment of the invention, the heat exchange channel 31 includes several heat exchange tubes, which are horizontally arranged inside the evaporation body 3. The hot water inlet 311 and the hot water outlet 312 are both located on the same side of the evaporation body 3. The hot water inlet 311 and the hot water outlet 312 are used to communicate with a liquid heat source in the production line. Specifically, the production line may generate a liquid heat source during production. The liquid heat source originates from the wastewater inlet 17, enters the evaporation body 3 through the hot water inlet 311, and exchanges heat with the asphalt waste liquid in the evaporation body 3. After heat exchange, the liquid heat source flows out from the hot water outlet 312 and returns to the production line in a liquid state through the wastewater outlet 18. This embodiment of the invention utilizes the liquid heat source in the production line without changing the state of the liquid heat source, without polluting the liquid heat source, and without affecting the cyclical use of the production line. It effectively recovers and utilizes heat, reduces the consumption of high-energy-consuming equipment, and saves costs. In addition, a waste hot water pump 16 is also provided between the wastewater inlet 17 and the hot water inlet 311 to introduce the liquid heat source into the heat exchange channel 31.

[0019] In this embodiment of the invention, the asphalt wastewater evaporation device further includes a first heat exchanger 6. The first heat exchanger 6 includes a first heat exchange channel 61 and a second heat exchange channel 62 that exchange heat with each other. One end of the first heat exchange channel 61 is connected to the raw liquid inlet 1, and the other end of the first heat exchange channel 61 is connected to the first liquid inlet 32 ​​on the evaporation body 3. One end of the second heat exchange channel 62 is connected to the first liquid outlet 34 of the evaporation body 3, and the other end of the second heat exchange channel 62 is connected to the concentrate outlet 2. Specifically, after the asphalt wastewater is evaporated in the evaporation body 3, the remaining asphalt wastewater forms a concentrate. The concentrate has a higher temperature. The first heat exchanger 6 is used to exchange heat between the unevaporated asphalt wastewater and the concentrate, thereby using the concentrate to heat the asphalt wastewater, effectively recovering the heat in the concentrate, reducing energy waste and saving costs.

[0020] Furthermore, the asphalt wastewater evaporation device also includes a second heat exchanger 7, which comprises a third heat exchange channel 71 and a fourth heat exchange channel 72 for mutual heat exchange. One end of the third heat exchange channel 71 is connected to the distilled water outlet 43, and the other end is connected to the distilled water outlet 22. One end of the fourth heat exchange channel 72 is connected to the raw liquid inlet 1, and the other end is connected to the first liquid inlet 32. Specifically, the first distilled water still has a certain temperature, which is higher than the temperature of the asphalt wastewater before evaporation. Therefore, the second heat exchanger 7 allows the asphalt wastewater before evaporation to exchange heat with the first distilled water, thereby recovering the heat in the first distilled water and reducing energy waste. In actual use, a portion of the asphalt wastewater enters the first heat exchanger 6 for heat exchange, and another portion enters the second heat exchanger 7 for heat exchange, thereby effectively increasing the temperature of the asphalt wastewater entering the device, facilitating evaporation and effectively recovering the heat source, thus avoiding energy waste.

[0021] In this embodiment of the invention, the raw liquid inlet 1 is also connected to the raw liquid tank 13, which is connected to the feed pump 12. The feed pump 12 is connected to both the first heat exchange channel 61 and the fourth heat exchange channel 72. Specifically, the raw liquid tank 13 facilitates the storage of asphalt waste liquid and also facilitates the stable output of asphalt waste liquid.

[0022] In this embodiment of the invention, a concentrate tank 14 is provided between the second heat exchange channel 62 and the concentrate outlet 2, and the concentrate tank 14 is connected to both the second heat exchange channel 62 and the concentrate outlet 2. Specifically, the concentrate tank 14 facilitates the storage of concentrate for discharge from the concentrate outlet 2 when needed.

[0023] In this embodiment of the invention, the asphalt wastewater evaporation device further includes a first distilled water tank 8, which is connected to the distilled water outlet 43 of the condenser 4 to introduce first distilled water into the first distilled water tank 8. The first distilled water tank 8 is also connected to the distilled water outlet 22. Specifically, the first distilled water tank 8 can be used to store the first distilled water and also facilitates a stable output of the first distilled water. In addition, a distilled water pump 9 is provided between the first distilled water tank 8 and the second heat exchanger 7 to introduce the first distilled water into the second heat exchanger 7.

[0024] Furthermore, the first distilled water tank 8 is also provided with an exhaust port 81, which is connected to the steam inlet 41 of the condenser 4, thereby discharging some of the steam and other gases that have entered the first distilled water tank 8 and sending them to the condenser 4 for further condensation or discharging them from the outlet 42 of the condenser 4.

[0025] In this embodiment of the invention, an activated carbon filter 10 is provided between the first distilled water tank 8 and the distilled water outlet 22 to filter the first distilled water into second distilled water. Specifically, the first distilled water may carry floating oil. After passing through the activated carbon filter 10, the floating oil can be filtered out, thereby forming a purer second distilled water for recycling. A second distilled water tank 11 is also provided between the activated carbon filter 10 and the distilled water outlet 22 to store the second distilled water and discharge it when needed.

[0026] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. An asphalt wastewater evaporation device, characterized in that, The device includes a raw liquid inlet, an evaporator, a condenser, and a vacuum pump connected in sequence. The evaporator has a heat exchange channel, which includes a hot water inlet and a hot water outlet. The evaporator also has a first liquid inlet, a steam outlet, and a first liquid outlet. The first liquid inlet is located at the bottom of the evaporator and is connected to the raw liquid inlet for introducing asphalt wastewater. The steam outlet is located at the top of the evaporator, and the first liquid outlet is located at the bottom of the evaporator and is connected to the concentrate outlet. The condenser includes a steam inlet, a gas outlet, a distilled water outlet, a cooling water inlet, and a cooling water outlet. The steam inlet is connected to the steam outlet of the evaporator body, and the gas outlet is connected to the vacuum pump to connect the evaporator body to form steam within the evaporator body. The cooling water inlet is used to introduce cooling water into the condenser and cause the steam entering the condenser to form first distilled water, which is discharged through the distilled water outlet.

2. The asphalt wastewater evaporation device as described in claim 1, characterized in that, The heat exchange channel includes several heat exchange tubes, which are horizontally arranged inside the evaporation body. The hot water inlet and the hot water outlet are both located on the same side of the evaporation body. The hot water inlet and the hot water outlet are used to connect with a liquid heat source in the production line.

3. The asphalt wastewater evaporation device as described in claim 1, characterized in that, It also includes a first heat exchanger, which includes a first heat exchange channel and a second heat exchange channel that exchange heat with each other. One end of the first heat exchange channel is connected to the raw liquid inlet, and the other end of the first heat exchange channel is connected to the first liquid inlet on the evaporation body. One end of the second heat exchange channel is connected to the first liquid outlet of the evaporation body, and the other end of the second heat exchange channel is connected to the concentrate outlet.

4. The asphalt wastewater evaporation device as described in claim 3, characterized in that, It also includes a second heat exchanger, which includes a third heat exchange channel and a fourth heat exchange channel that exchange heat with each other. One end of the third heat exchange channel is connected to the distilled water outlet, and the other end of the third heat exchange channel is connected to the distilled water outlet. One end of the fourth heat exchange channel is connected to the raw liquid inlet, and the other end of the fourth heat exchange channel is connected to the first liquid inlet.

5. The asphalt wastewater evaporation device as described in claim 4, characterized in that, The raw liquid inlet is also connected to the raw liquid tank, the raw liquid tank is connected to the feed pump, and the feed pump is connected to both the first heat exchange channel and the fourth heat exchange channel.

6. The asphalt wastewater evaporation device as described in claim 4, characterized in that, A concentrate tank is provided between the second heat exchange channel and the concentrate outlet, and the concentrate tank is connected to both the second heat exchange channel and the concentrate outlet.

7. The asphalt wastewater evaporation device as described in claim 1, characterized in that, It also includes a first distilled water tank, which is connected to the distilled water outlet of the condenser for introducing first distilled water into the first distilled water tank, and the first distilled water tank is connected to the distilled water outlet.

8. The asphalt wastewater evaporation device as described in claim 5, characterized in that, The first distilled water tank is also provided with an exhaust port, which is connected to the steam inlet of the condenser.

9. The asphalt wastewater evaporation device as described in claim 5, characterized in that, An activated carbon filter is provided between the first distilled water tank and the distilled water outlet to filter the first distilled water to form the second distilled water.

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