Waste liquid evaporation system

Abstract

The utility model discloses a waste liquid evaporation system which comprises a horizontal heating separator, the horizontal heating separator comprises a shell, the shell comprises a main body, the bottom of the main body is provided with a hot well, the upper part of the main body is provided with a spraying device, the main body is internally provided with a heat exchanger, and the heat exchanger is positioned in the middle of the main body; an air inlet and a liquid outlet of the heat exchanger are both located in the first side of the body, and the hot well communicates with the spraying device. The main body is further provided with a second side opposite to the first side, a secondary steam outlet is formed in the side face of the second side and communicated with an air inlet of a separation tank, an air outlet is formed in the top of the separation tank, and a first backflow opening is formed in the bottom of the separation tank and communicated with the main body. A gas outlet of the separation tank communicates with a gas inlet of the heat exchanger. According to the waste liquid evaporation system, the gas-liquid separation height is reduced, materials and production time are saved, the occupied area is small, in addition, the separation tank is independently arranged, the height can be adjusted according to actual conditions, and adjustment is convenient.

Description

Technical Field

[0001] The utility model relates to the field of evaporation, in particular to a waste liquid evaporation system. Background Art

[0002] In the traditional design process, the horizontal spray process can meet the requirements of heating and separation in one, but in order to meet the gas-liquid separation distance, the heat exchange tubes are usually distributed on the bottom side of the cylinder, resulting in a larger cylinder volume. The heat exchange tubes are arranged in a rectangular shape and protrude from the outer cylinder, which makes the production and manufacturing more complicated and occupies a complex space. Summary of the invention

[0003] The utility model aims to provide a waste liquid evaporation system to solve the problem that the existing horizontal heating separator is relatively complicated to manufacture and occupies complex space.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a waste liquid evaporation system, including a horizontal heating separator, the horizontal heating separator includes an outer shell, the outer shell includes a main body, a hot well is provided at the bottom of the main body, a spray device is provided at the upper part of the main body, a heat exchanger is provided inside the main body, the heat exchanger is located in the middle of the main body, the air inlet and the liquid outlet of the heat exchanger are both located on the first side of the main body, the hot well is connected to the spray device through a circulating pump to spray the waste liquid in the hot well onto the heat exchanger in the main body to form secondary steam; the main body also has a second side opposite to the first side, a secondary steam outlet is provided on the side of the second side, the secondary steam outlet is connected to the air inlet of a separation tank, the top of the separation tank is provided with an air outlet, the bottom of the separation tank is provided with a first reflux port, the first reflux port is connected to the main body, and the air outlet of the separation tank is connected to the air inlet of the heat exchanger through a compression device.

[0005] Preferably, a heat exchange tube box protruding from the main body is provided on the first side of the main body, a steam inlet is provided on the upper part of the heat exchange tube box, a condensate outlet is provided on the bottom of the heat exchange tube box, and a partition is provided in the heat exchange tube box to isolate the steam inlet from the condensate outlet, the partition divides the heat exchange tube box into a first chamber and a second chamber, the steam inlet is connected to the air inlet of the heat exchanger through the first chamber, and the liquid outlet of the heat exchanger is connected to the condensate outlet through the second chamber.

[0006] Preferably, the length direction of the heat exchanger is consistent with the length direction of the main body, the heat exchanger has a tube sheet, one end of the heat exchanger is connected to the heat exchange tube box through the tube sheet, and the other end of the heat exchanger is supported in the main body through a support.

[0007] Preferably, the heat exchange tube box is detachably connected to the main body, the tube sheet is flange-connected to the heat exchange tube box, a support hole is provided on the support member, and the heat exchanger is inserted into the support hole.

[0008] Preferably, the heat exchanger is U-shaped, and a heat exchange tube bundle is arranged inside the heat exchanger along its length direction.

[0009] Preferably, the support member comprises a support plate and a support column, the support plate is provided with the support hole, and the support column is supported below the support plate.

[0010] Preferably, a second return port is provided on the main body, the first return port is connected to the main body through the second return port, and the height of the first return port is higher than the height of the second return port.

[0011] Preferably, the hot well is also provided with a raw liquid inlet, a circulating liquid outlet and a concentrated liquid outlet, the raw liquid inlet is arranged on one side of the hot well, the circulating liquid outlet and the concentrated liquid outlet are located on the other side of the hot well, and the raw liquid inlet is located between the concentrated liquid outlet and the circulating liquid outlet, and the circulating liquid outlet is connected to the spraying device through the circulating pump.

[0012] Compared with the prior art, the horizontal heating separator in the waste liquid evaporation system of the utility model cancels the demisting net setting, and the heat exchanger is arranged in the middle of the main body, which reduces the gas-liquid separation height, simplifies the internal structure, saves materials and production hours and occupies a small area. In addition, the separation tank is arranged separately, and the height can be adjusted according to actual conditions, which is convenient to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the principle diagram of the waste liquid evaporation system of the utility model.

[0014] Figure 2 This is a structural diagram of the horizontal heating separator of the waste liquid evaporation system of the utility model.

[0015] Figure 3 This is a schematic structural diagram of a waste liquid evaporation system in which a heat exchanger is arranged in a main body. DETAILED DESCRIPTION

[0016] In order to explain the technical content, structural features and effects achieved by the present invention in detail, the following is a detailed description in conjunction with the implementation modes and the accompanying drawings.

[0017] like Figures 1 to 3As shown, the embodiment of the utility model provides a waste liquid evaporation system, including a horizontal heating separator 10, the horizontal heating separator 10 includes a shell, the shell includes a main body 1, a hot well 11 is arranged at the bottom of the main body 1, a spray device 12 is arranged at the upper part of the main body 1, a heat exchanger 13 is arranged inside the main body 1, the heat exchanger 13 is located in the middle of the main body 1, the air inlet and the liquid outlet of the heat exchanger 13 are both located on the first side 171 of the main body 1, the hot well 11 is connected to the spray device 12 through a circulating pump 40 to transfer the hot well 11 The waste liquid in the main body 1 is sprayed onto the heat exchanger 13 in the main body 1 to form secondary steam; the main body 1 also has a second side 172 opposite to the first side 171, and a secondary steam outlet 15 is arranged on the side of the second side 172, and the secondary steam outlet 15 is connected to the air inlet 21 of the separation tank 20, and the top of the separation tank 20 is provided with an air outlet 22, and the bottom of the separation tank 20 is provided with a first reflux port 23, the first reflux port 23 is connected to the main body 1, and the air outlet 22 is connected to the air inlet of the heat exchanger 13 through a compression device 30.

[0018] Specifically, the spray system has a plurality of uniformly arranged nozzles 121, the outlets of the nozzles 121 are located inside the main body 1 to introduce the waste liquid in the hot well 11 into the horizontal heating separator 10 and exchange heat with the heat exchanger 13 to form secondary steam. The heat exchanger 13 is arranged in the middle of the main body 1, thereby reducing the distance of gas-liquid separation in the shell and reducing the volume of the horizontal heating separator 10. The waste liquid can be waste water, and the secondary steam flows to the separation tank 20 after passing through the secondary steam outlet 15. The function of the separation tank 20 is to increase the gas-liquid separation height so that the gas-liquid separation efficiency is not affected. The separation tank 20 is separately provided, and its height can be adjusted according to actual conditions, and the adjustment is convenient. The air inlet 21 is provided at the lower part of the separation tank 20, and is at a certain distance from the bottom of the separation tank 20. The first reflux port 23 and the main body 1 can be connected by a straight pipe. The liquid separated by the separation tank 20 is partly condensed water and partly waste water carried by steam, so the first reflux port 23 is provided to return the separated liquid to the main body 1 to avoid the accumulation of liquid in the separation tank 20 or backflow affecting the gas-liquid separation effect. The compression device 30 is specifically a steam compressor to increase the temperature and pressure of the secondary steam.

[0019] The horizontal heating separator 10 in the waste liquid evaporation system of the utility model embodiment cancels the demisting net setting, and the heat exchanger 13 is arranged in the middle of the main body 1, which reduces the gas-liquid separation height, simplifies the internal structure, saves materials and production hours, and occupies a small area. In addition, the separation tank 20 is arranged separately, and the height can be adjusted according to actual conditions, which is convenient to adjust.

[0020] In the embodiment of the utility model, Figure 1 to Figure 2As shown, a heat exchange tube box 14 protruding from the main body 1 is provided on the first side 171 of the main body 1, a steam inlet 141 is provided on the upper portion of the heat exchange tube box 14, a condensate outlet 142 is provided on the bottom portion of the heat exchange tube box 14, a partition 143 is provided inside the heat exchange tube box 14 for isolating the steam inlet 141 from the condensate outlet 142, the partition 143 divides the heat exchange tube box 14 into a first chamber 144 and a second chamber 145, the steam inlet 141 is connected to the air inlet of the heat exchanger 13 through the first chamber 144, and the liquid outlet of the heat exchanger 13 is connected to the condensate outlet 142 through the second chamber 145. Specifically, when the waste liquid is waste water, the liquid flowing out of the condensate outlet 142 is distilled water, which is convenient for further utilization. The heat exchange tube box 14 is arranged on the first side 171 of the main body 1, so that the heat exchange tube box 14 is equivalent to the "head" of the horizontal heating separator 10, and the space occupied is reduced, which is convenient for project layout. A partition 143 is arranged in the heat exchange tube box 14 to isolate the steam inlet 141 from the condensate outlet 142, and the design is ingenious and reasonable.

[0021] In the embodiment of the utility model, the length direction of the heat exchanger 13 is consistent with the length direction of the main body 1, and the heat exchanger 13 has a tube sheet. One end of the heat exchanger 13 is connected to the heat exchange tube box 14 through the tube sheet, and the other end of the heat exchanger 13 is supported in the main body 1 by a support member 131. Specifically, Figures 1 to 3 As shown, the length direction of the heat exchanger 13 is consistent with the length direction of the main body 1, which effectively improves the heat exchange effect. In addition, the heat exchanger 13 is supported by the support member 131, and the arrangement is reasonable.

[0022] In the embodiment of the utility model, the heat exchange tube box 14 is detachably connected to the main body 1, the tube sheet is flange-connected to the heat exchange tube box 14, a support hole is provided on the support member 131, and the heat exchanger 13 is inserted into the support hole. Figures 1 to 3 As shown, by detachably connecting the heat exchange tube box 14 to the main body 1 and flange-connecting the tube sheet to the heat exchange tube box 14, the heat exchanger 13 can be drawn out for cleaning or replacement, which is very convenient for maintenance.

[0023] In the embodiment of the utility model, the heat exchanger 13 is U-shaped, and a heat exchange tube bundle is arranged inside the heat exchanger 13 along its length direction. Figures 1 to 3 As shown, the heat exchanger 13 is a two-pass U-shaped structure. By arranging a heat exchange tube bundle in the heat exchanger 13, it is convenient to control the flow direction of the secondary steam and make the heat exchange more uniform.

[0024] In the embodiment of the utility model, the support member 131 includes a support plate 1311 and a support column 1312. The support plate 1311 is provided with a support hole. One end of the support column 1312 is supported below the support plate 1311, and the other end of the support column 1312 is provided on the inner wall of the main body 1. Specifically, the support plate 1311 is circular, the support column 1312 is provided below the support plate 1311, and the support plate 1311 is provided with a support hole, which is adapted to the outer periphery of the heat exchanger 13 so that the heat exchanger 13 can be inserted into the support hole and supported by the support column 1312, and the layout is reasonable and safe.

[0025] In the embodiment of the utility model, Figure 1 As shown, the main body 1 is provided with a second return port 16, the first return port 23 is connected to the main body 1 through the second return port 16, and the height of the first return port 23 is higher than the height of the second return port 16. Specifically, the first return port 23 and the second return port 16 can be connected through a straight pipe, and by making the height of the first return port 23 higher than the height of the second return port 16, the first return port 23 and the second return port 16 can be directly connected using a straight pipe, without the need to set up additional pump bodies and other settings, so the design is more reasonable and the installation is more convenient.

[0026] In an embodiment of the utility model, a raw liquid inlet 111, a circulating liquid outlet 112 and a concentrated liquid outlet 113 are also provided on the hot well 11. The raw liquid inlet 111 is arranged on one side of the hot well 11, and the circulating liquid outlet 112 and the concentrated liquid outlet 113 are located on the other side of the hot well 11, and the raw liquid inlet 111 is located between the concentrated liquid outlet 113 and the circulating liquid outlet 112, and the circulating liquid outlet 112 is connected to the spray device 12 through the circulating pump 40. Specifically, the process of waste liquid evaporation of the waste liquid evaporation system of the utility model is as follows: the raw liquid is pumped into the hot well 11 along the arrow b through the raw liquid pump 50 by the arrow a, the waste liquid in the hot well 11 enters the spray device 12 along the arrow c through the circulating pump 40 and is sprayed to the horizontal heating separator 10 for heat exchange to evaporate into secondary steam, the secondary steam enters the separation tank 20 via the arrow f, the secondary steam separated by the separation tank 20 enters the compression device 30 along the arrow g for temperature and pressure increase, the secondary steam after temperature and pressure increase enters the heat exchange tube box 14 along the arrow h for heat exchange with the sprayed waste water, the condensed water condensed by heat exchange flows out from the condensate outlet 142 along the arrow i, the liquid separated by the separation tank 20 will flow back to the main body 1 through the first reflux port 23 and the second reflux port 16, and the concentrated liquid in the hot well 11 is extracted to the hot well 11 by the concentrated liquid pump 60.

[0027] The layout of the heat exchanger 13 of the horizontal heating separator 10 in the waste liquid evaporation system of the utility model is designed according to the shape of the cylinder body, and the heat exchange tube box 14 is equivalent to the "head" of the cylinder body, which reduces the space occupied and facilitates the project layout. The circulating pump 50 transports the wastewater in the hot well 11 to the nozzle 121 and sprays it on the surface of the heat exchanger 13. The secondary steam generated by the evaporation of the wastewater, because the main body 1 removes the demisting net, the layout of the heat exchange tube is similar to the outer cylinder, which reduces the gas-liquid separation height and saves manufacturing materials and working hours. The secondary steam flows to the separation tank 20 through the secondary steam outlet 15. The function of the separation tank 20 here is to increase the gas-liquid separation height so that the gas-liquid separation efficiency is not affected. The separation tank 20 is set separately and can be adjusted in height according to actual conditions, which is convenient to adjust. The liquid separated by the separation tank 20 is part of the condensed water and part of the wastewater carried by the steam, so the bottom is connected to the main body 1 with a straight pipe so that the separated liquid flows back to the main body 1 to avoid the accumulation of liquid in the separation tank 20 or backflow affecting the gas-liquid separation effect. The separated secondary steam enters the compression device 30 for temperature and pressure increase. The secondary steam after temperature and pressure increase enters the heat exchange tube box 14 for heat exchange with the sprayed wastewater. The condensed water condensed by heat exchange flows out from the condensate outlet 142. Here, the heat exchanger 13 adopts a two-pass U-shaped structure. The tube sheet of the heat exchanger 13 is connected to the heat exchange tube box 14 in the form of a flange, and the heat exchanger 13 can be drawn out for cleaning. The heat exchanger 13 is inserted into the corresponding hole of the circular support plate 1311, and a support column 1312 is set at the bottom of the support plate 1311, so that the heat exchanger 13 is safely and reasonably arranged inside the main body 1.

[0028] The above disclosure is only a preferred example of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A waste liquid evaporation system, It is characterized in that The horizontal heating separator comprises a shell, the shell comprises a main body, a hot well is arranged at the bottom of the main body, a spray device is arranged at the upper part of the main body, a heat exchanger is arranged inside the main body, the heat exchanger is located in the middle part of the main body, the air inlet and the liquid outlet of the heat exchanger are both located on the first side of the main body, the hot well is connected to the spray device through a circulation pump to spray the waste liquid in the hot well onto the heat exchanger in the main body to form secondary steam; The main body also has a second side opposite to the first side, and a secondary steam outlet is arranged on the side surface of the second side, and the secondary steam outlet is connected to the air inlet of a separation tank. The top of the separation tank is provided with an air outlet, and the bottom of the separation tank is provided with a first reflux port, and the first reflux port is connected to the main body, and the air outlet of the separation tank is connected to the air inlet of the heat exchanger via a compression device.

2. The waste liquid evaporation system according to claim 1, It is characterized in that A heat exchange tube box protruding from the main body is provided on the first side of the main body, a steam inlet is provided on the upper portion of the heat exchange tube box, a condensate outlet is provided on the bottom of the heat exchange tube box, a partition is provided in the heat exchange tube box to isolate the steam inlet from the condensate outlet, the partition divides the heat exchange tube box into a first chamber and a second chamber, the steam inlet is connected to the air inlet of the heat exchanger through the first chamber, and the liquid outlet of the heat exchanger is connected to the condensate outlet through the second chamber.

3. The waste liquid evaporation system according to claim 2, It is characterized in that The length direction of the heat exchanger is consistent with the length direction of the main body. The heat exchanger has a tube sheet. One end of the heat exchanger is connected to the heat exchange tube box through the tube sheet, and the other end of the heat exchanger is supported in the main body through a support.

4. The waste liquid evaporation system according to claim 3, It is characterized in that The heat exchange tube box is detachably connected to the main body, the tube sheet is flange-connected to the heat exchange tube box, a support hole is provided on the support member, and the heat exchanger is inserted into the support hole.

5. The waste liquid evaporation system according to claim 4, It is characterized in that The heat exchanger is U-shaped, and a heat exchange tube bundle is arranged inside the heat exchanger along its length direction.

6. The waste liquid evaporation system according to claim 5, It is characterized in that The support member includes a support plate and a support column. The support plate is provided with the support hole, and the support column is supported below the support plate.

7. The waste liquid evaporation system according to claim 5, It is characterized in that The main body is provided with a second return port, the first return port is connected to the main body through the second return port, and the height of the first return port is higher than that of the second return port.

8. The waste liquid evaporation system according to claim 1, It is characterized in that The hot well is also provided with a raw liquid inlet, a circulating liquid outlet and a concentrated liquid outlet. The raw liquid inlet is arranged on one side of the hot well, and the circulating liquid outlet and the concentrated liquid outlet are located on the other side of the hot well. The raw liquid inlet is located between the concentrated liquid outlet and the circulating liquid outlet, and the circulating liquid outlet is connected to the spray device through the circulating pump.

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