Waste emulsion low-temperature concentration equipment and process

Abstract

The invention discloses waste emulsion low-temperature concentration equipment and process, and belongs to the technical field of waste liquid treatment.The waste emulsion low-temperature concentration equipment comprises an evaporation tank used for treating waste emulsion, a feeding port is formed in the evaporation tank, and a coil pipe used for heating is arranged in the evaporation tank; a steam discharging pipeline, a defoaming agent feeding pipeline, a cleaning water feeding pipeline, a raw water inlet pipeline and a concentrated solution discharging pipeline are connected to the evaporating tank, the raw water inlet pipeline is located above the concentrated solution discharging pipeline, the cleaning water feeding pipeline is located above the raw water inlet pipeline, the defoaming agent feeding pipeline is located above the cleaning water feeding pipeline, and the concentrated solution discharging pipeline is located above the concentrated solution discharging pipeline. And the steam discharge pipeline is positioned above the defoaming agent feeding pipeline and is connected with a vacuum cooling system. The method has the effects that the complexity of waste emulsion treatment operation is reduced, and the waste emulsion treatment efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of waste liquid treatment, and in particular to a low-temperature concentration device and process for waste emulsion. Background Art

[0002] After use, the emulsion contains a large amount of complex components such as mineral oil, emulsifiers and nitrites. Direct discharge will cause serious environmental pollution. If these waste liquids are discharged directly into the environment without treatment, they will cause serious pollution to the soil and water sources, threatening the ecological balance. Through effective waste emulsion treatment, pollutant emissions can be reduced, and the ecological environment can be protected from damage, thereby maintaining the ecological balance. With the improvement of production technology, the stability of emulsions is getting higher and higher, resulting in high-concentration and severely emulsified waste emulsions that are difficult to demulsify, low efficiency, and complex operation. In view of the above-mentioned related technologies, it is urgent to design and develop a waste emulsion low-temperature concentration equipment and process to reduce the complexity of waste emulsion treatment operations and improve the efficiency of waste emulsion treatment. Summary of the invention

[0003] In order to reduce the complexity of the operation of treating waste emulsion and improve the efficiency of treating waste emulsion, the present application provides a waste emulsion low-temperature concentration device and process.

[0004] The present application provides a waste emulsion low-temperature concentration device and process using the following technical solutions: A waste emulsion low-temperature concentration device and process, comprising an evaporator for treating waste emulsion, wherein the evaporator is provided with a feed inlet, wherein a coil for heating is provided in the evaporator, wherein a steam discharge pipeline, a defoamer feed pipeline, a cleaning water feed pipeline, a raw water inlet pipeline, and a concentrated liquid discharge pipeline are connected to the evaporator, wherein the raw water inlet pipeline is located above the concentrated liquid discharge pipeline, the cleaning water feed pipeline is located above the raw water inlet pipeline, the defoamer feed pipeline is located above the cleaning water feed pipeline, the steam discharge pipeline is located above the defoamer feed pipeline, and the steam discharge pipeline is connected to a vacuum cooling system.

[0005] By adopting the above technical scheme, a feed port is provided on the evaporator, a coil for heating is provided in the evaporator, a concentrated liquid discharge pipe, a raw water inlet pipe, a cleaning water feed pipe, a defoaming agent feed pipe, and a steam discharge pipe are connected to the evaporator, the raw water inlet pipe is located above the concentrated liquid discharge pipe, the cleaning water feed pipe is located above the raw water inlet pipe, the defoaming agent feed pipe is located above the cleaning water feed pipe, the steam discharge pipe is located above the defoaming agent feed pipe, and the steam discharge pipe is connected to a vacuum cooling system. In the process of treating the waste emulsion, the waste emulsion in the evaporator is first preheated through the coil, and then the evaporation temperature is set to evaporate and concentrate the waste emulsion. After the evaporation cycle is completed, the concentrate is discharged through the concentrated liquid pipeline. The whole operation process is simple and easy to control, which reduces the complexity of the operation of treating the waste emulsion and improves the efficiency of treating the waste emulsion.

[0006] Preferably, the outlet of the concentrated liquid discharge pipe is connected to a pipe 1, the pipe 1 is connected to the evaporation tank, and an internal circulation ball valve is provided on the pipe 1.

[0007] By adopting the above technical solution, the outlet of the concentrated liquid discharge pipe is connected with pipe one, which is connected to the evaporation tank. An internal circulation ball valve is arranged on pipe one. When it is opened, the internal circulation of the waste emulsified liquid in the evaporation tank is started.

[0008] Preferably, the outlet of the concentrated liquid discharge pipe is connected with a second pipe, the second pipe is communicated with the first pipe, the second pipe is connected with the evaporation tank, and a diaphragm pump and a circulating pump inlet shut-off valve are arranged on the second pipe.

[0009] By adopting the above technical solution, the outlet of the concentrated liquid discharge pipeline is connected with pipeline 2, which is communicated with pipeline 1, and pipeline 2 is connected with the evaporation tank. A diaphragm pump and a circulation pump inlet shut-off valve are arranged on pipeline 2. The diaphragm pump transfers the concentrated liquid, so that the treated liquid is internally circulated to prevent precipitation and scaling.

[0010] Preferably, the vacuum cooling system includes a condensing heat exchanger connected to the steam exhaust pipe, the condensing heat exchanger is provided with a distilled water outlet and a refrigerant outlet near the steam exhaust pipe, and the condensing heat exchanger is provided with a distilled water inlet and a refrigerant inlet away from the steam exhaust pipe.

[0011] By adopting the above technical solution, the condensing heat exchanger is connected to the steam exhaust pipe, and a distilled water outlet and a refrigerant outlet are provided near the steam exhaust pipe of the condensing heat exchanger, and a distilled water inlet and a refrigerant inlet are provided far away from the steam exhaust pipe of the condensing heat exchanger, so that the hot water vapor is condensed into liquid water to release the latent heat of vaporization.

[0012] Preferably, a pipeline three is provided between the refrigerant outlet and the evaporation tank, and the vacuum cooling system includes a compressor provided on the pipeline three.

[0013] By adopting the above technical solution, a pipeline three is arranged between the refrigerant outlet and the evaporation tank, and the vacuum cooling system includes a compressor arranged on the pipeline three, which changes the refrigerant from liquid to high-temperature and high-pressure gas, releases heat in the evaporator to evaporate the waste water.

[0014] Preferably, a pipe four is arranged between the distilled water inlet and the evaporation tank, and the vacuum cooling system includes an air-cooled condenser arranged on the pipe four, a refrigerant reflux regulating manual valve arranged on the pipe four, and an expansion valve arranged on the pipe four, the air-cooled condenser is close to the evaporation tank, the expansion valve is close to the condensation heat exchanger, and the refrigerant reflux regulating manual valve is arranged between the air-cooled condenser and the expansion valve.

[0015] By adopting the above technical scheme, a pipe four is arranged between the distilled water inlet and the evaporator, the air-cooled condenser is arranged on the pipe four, the refrigerant reflux regulating manual valve is arranged on the pipe four, the expansion valve is arranged on the pipe four, the air-cooled condenser is close to the evaporator, the expansion valve is close to the condensing heat exchanger, the refrigerant reflux regulating manual valve is arranged between the air-cooled condenser and the expansion valve, the reflux flow rate of the refrigerant can be manually adjusted to control the refrigeration effect of the condensing heat exchanger and the system pressure, and the refrigerant reflux regulating manual valve can also provide a manual control means during system maintenance or abnormal conditions to ensure the safe operation of the system.

[0016] Preferably, a connecting pipe is provided between the pipe three and the pipe four, and the vacuum cooling system comprises a refrigeration system bypass valve provided on the connecting pipe.

[0017] By adopting the above technical solution, a connecting pipe is provided between pipe three and pipe four, and a refrigeration system bypass valve is provided on the connecting pipe to adjust the refrigerant flow and system pressure. The refrigeration system bypass valve can also provide a safe bypass channel during system maintenance or abnormal conditions to ensure the stability and safety of the system.

[0018] Preferably, a delivery pipeline is provided on the condensing heat exchanger, and a centrifugal pump is provided on the delivery pipeline.

[0019] By adopting the above technical solution, a delivery pipeline is provided on the condensing heat exchanger, and a centrifugal pump is provided on the delivery pipeline. The centrifugal pump can pump the refrigerant liquid that has absorbed heat and evaporated in the condensing heat exchanger from the low-pressure area to the high-pressure area, ensuring that the refrigerant continues to circulate in the system, helping to maintain the refrigerant flow in the system, and ensuring the stable operation of the condensing heat exchanger and the entire refrigeration system.

[0020] Preferably, a sliding groove is provided on the inner top wall of the evaporator, and a control mechanism is provided in the evaporator, the control mechanism includes a sensor 1 provided in the evaporator, a touch switch connected to the sensor 1, a sensor 2 provided on the defoaming agent feeding pipe, a sliding rod connected to the inner top wall of the evaporator, a floating plate vertically slidably provided on the sliding rod, and an abutting rod capable of abutting against the touch switch, the touch switch is provided in the sliding groove, the sensor 1 and the sensor 2 can transmit signals, and the abutting rod is provided on the top surface of the floating plate.

[0021] By adopting the above technical scheme, a sliding groove is opened on the inner top wall of the evaporator, a sliding rod is arranged on the inner top wall of the evaporator, a floating plate is vertically slidably arranged on the sliding rod, a sensor 1 is arranged in the evaporator, a touch switch is arranged in the sliding groove, the touch switch is connected to the sensor 1, the sensor 2 is arranged on the defoaming agent feeding pipe, the sensor 1 and the sensor 2 can transmit signals, the abutment rod is arranged on the top surface of the floating plate, bubbles are easily generated in the process of treating the waste emulsion, when the bubbles lift the floating plate and make the abutment rod abut the touch switch, the sensor 1 and the sensor 2 are transmitted through the signal, the defoaming agent feeding pipe is controlled to enter the evaporator, and the bubbles in the evaporator are eliminated.

[0022] In a second aspect, the present application provides a waste emulsion low-temperature concentration process, which adopts the following technical solution: A low-temperature concentration process for waste emulsion comprises the following steps: S1. Preheating: When the raw water bucket reaches the middle liquid level, the water pump runs to generate vacuum, water automatically enters the evaporator, and the compressor runs to generate heat to heat the wastewater in the evaporator. Under the vacuum state, the wastewater temperature rises to 30°C, the wastewater begins to evaporate, and the preheating is completed; S2, evaporation and concentration: the evaporation temperature is set to 35-40℃, and in a vacuum state (-95kPa), the compressor compresses the refrigerant to generate heat. While the water evaporates rapidly, the refrigerant absorbs heat after being gasified through the expansion valve to refrigerate. The vapor rises and meets the cold liquid to liquefy and enter the water storage tank. The refrigerant absorbs heat and is compressed by the compressor to generate heat, thereby reheating the wastewater. S3. Concentrate discharge: After one evaporation cycle is completed, the compression pump stops working, the concentrate pipeline is opened, the evaporation tank is pressurized, and the concentrate is pressed into the concentrate barrel.

[0023] By adopting the above technical scheme, when the raw water bucket reaches the middle liquid level, the water pump runs to generate vacuum, the evaporator automatically fills with water, and the compressor runs to generate heat to heat the wastewater in the evaporator. Under the vacuum state, the wastewater temperature rises to 30°C, the wastewater begins to evaporate, and the preheating is completed. The evaporation temperature is set to 35-40°C. Under the vacuum (-95kPa) state, the compressor compresses the refrigerant to generate heat. While the water evaporates rapidly, the refrigerant absorbs heat after being gasified through the expansion valve to refrigerate. The vapor rises and meets the cold liquid to liquefy and enter the water storage tank. The refrigerant absorbs heat and is compressed and heated by the compressor to reheat the wastewater. After an evaporation cycle is completed, the compression pump stops working, the concentrated liquid pipeline is opened, the evaporator is pressurized, and the concentrated liquid is pressed into the concentrated barrel. The whole process of treating the waste emulsion is completed. The whole operation process is simple and easy to control, which improves the efficiency of treating the waste emulsion.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The evaporator is provided with a feed inlet, and a coil for heating is provided in the evaporator. The evaporator is connected with a concentrated liquid discharge pipe, a raw water inlet pipe, a cleaning water feed pipe, a defoamer feed pipe, and a steam discharge pipe. The raw water inlet pipe is located above the concentrated liquid discharge pipe, the cleaning water feed pipe is located above the raw water inlet pipe, the defoamer feed pipe is located above the cleaning water feed pipe, and the steam discharge pipe is located above the defoamer feed pipe. The steam discharge pipe is connected to a vacuum cooling system. In the process of treating the waste emulsion, the waste emulsion in the evaporator is first preheated through the coil, and then the evaporation temperature is set to evaporate and concentrate the waste emulsion. After the evaporation cycle is completed, the concentrate is discharged through the concentrated liquid pipeline. During the evaporation process, the vacuum cooling system can control the overall refrigeration effect, which is beneficial to maintaining the stability of the overall device during the evaporation process. The entire operation process is simple and easy to control, which reduces the complexity of the operation of treating the waste emulsion and improves the efficiency of treating the waste emulsion; 2. A sliding groove is provided on the inner top wall of the evaporator, a sliding rod is arranged on the inner top wall of the evaporator, a floating plate is vertically slidably arranged on the sliding rod, a sensor 1 is arranged in the evaporator, a touch switch is arranged in the sliding groove, the touch switch is connected to the sensor 1, and the sensor 2 is arranged on the defoaming agent feeding pipe. The sensor 1 and the sensor 2 can transmit signals, and the abutment rod is arranged on the top surface of the floating plate. In the process of treating the waste emulsion, bubbles are easily generated. When the bubbles lift the floating plate and make the abutment rod abut the touch switch, the sensor 1 and the sensor 2 are transmitted through the signal, and the defoaming agent feeding pipe is controlled to enter the evaporator, and the bubbles in the evaporator are eliminated, which is beneficial to the normal reaction in the evaporator and improves the overall stability in the process of treating the waste emulsion; 3. When the raw water bucket reaches the middle liquid level, the water pump runs to generate vacuum, the evaporator automatically fills with water, and the compressor runs to generate heat to heat the wastewater in the evaporator. Under vacuum, the wastewater temperature rises to 30°C, the wastewater begins to evaporate, and the preheating is completed. The evaporation temperature is set to 35-40°C. Under vacuum (-95kPa), the compressor compresses the refrigerant to generate heat. While the water evaporates rapidly, the refrigerant absorbs heat and refrigerates after being gasified through the expansion valve. The vapor rises and meets the cold liquid to liquefy and enter the water storage tank. The refrigerant absorbs heat and is compressed and heated by the compressor to reheat the wastewater. After an evaporation cycle is completed, the compression pump stops working, the concentrated liquid pipeline is opened, the evaporator is pressurized, and the concentrated liquid is pressed into the concentrated barrel. This evaporation cycle can be controlled by the PLC end, and the entire process of treating the waste emulsion is completed. The entire operation process is simple and easy to control, which improves the efficiency of treating the waste emulsion. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the waste emulsion low-temperature concentration equipment in the embodiment of the present application.

[0026] Figure 2 Schematic diagram of the internal structure of the evaporation tank in the embodiment of the present application.

[0027] Description of reference numerals: 1. Evaporation tank; 11. Feed inlet; 12. Vacuum discharge angle seat valve; 13. Steam discharge pipeline; 14. Defoamer feed pipeline; 141. Defoamer angle seat valve; 15. Cleaning water feed pipeline; 151. Cleaning water inlet ball valve; 16. Raw water inlet pipeline; 161. Raw water inlet ball valve; 17. Concentrate discharge pipeline; 171. Concentrate discharge ball valve; 172. Pipeline 1; 173. Pipeline 2; 174. Internal circulation ball valve; 175. Diaphragm pump; 176. Circulation pump inlet cut-off valve; 18. Sliding groove ; 2. Vacuum cooling system; 21. Condensing heat exchanger; 211. Distilled water outlet; 212. Refrigerant outlet; 213. Distilled water inlet; 22. Compressor; 23. Air-cooled condenser; 24. Refrigerant reflux regulating manual valve; 25. Expansion valve; 26. Refrigeration system bypass valve; 27. Delivery pipeline; 271. Centrifugal pump; 28. Pipeline three; 29. ​​Pipeline four; 291. Connecting pipeline; 3. Control mechanism; 31. Sensor one; 32. Touch switch; 33. Sliding rod; 34. Floating plate; 35. Abutment rod. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-2 This application is described in further detail.

[0029] The present application embodiment discloses a main body of a waste emulsion low temperature concentration device. Figure 1 and Figure 2As shown, the main body of the waste emulsion low-temperature concentration equipment includes an evaporator 1, a vacuum cooling system 2 and a control mechanism 3. The axis direction of the evaporator 1 is perpendicular to the ground, the length direction of the evaporator 1 is perpendicular to the ground, and a coil is arranged in the evaporator 1.

[0030] Reference Figure 1 As shown, the evaporator 1 is provided with a feed port 11, which is close to the top of the evaporator 1. The evaporator 1 is provided with a vacuum exhaust angle seat valve 12, which can control the discharge of gas or steam in the vacuum system, so as to facilitate the adjustment of the pressure in the system. The evaporator 1 is provided with a spare feed port.

[0031] Reference Figure 1 As shown, the evaporator 1 is connected with a steam exhaust pipe 13, a defoamer feed pipe 14, a cleaning water feed pipe 15, a raw water inlet pipe 16, and a concentrated liquid discharge pipe 17. The raw water inlet pipe 16 is located above the concentrated liquid discharge pipe 17, the cleaning water feed pipe 15 is located above the raw water inlet pipe 16, the defoamer feed pipe 14 is located above the cleaning water feed pipe 15, and the steam exhaust pipe 13 is located above the defoamer feed pipe 14.

[0032] Reference Figure 1 As shown, a defoaming agent angle seat valve 141 is provided on the defoaming agent feed pipe 14, a cleaning water inlet ball valve 151 is provided on the cleaning water feed pipe 15, a raw water inlet ball valve 161 is provided on the raw water inlet pipe 16, and a concentrated liquid discharge ball valve 171 is provided on the concentrated liquid discharge pipe 17. When the concentrated liquid discharge ball valve 171 is opened, the concentrated liquid is discharged.

[0033] Reference Figure 1 As shown, the outlet of the concentrated liquid discharge pipeline 17 is connected to pipeline one 172 , and the outlet of the concentrated liquid discharge pipeline 17 is connected to pipeline two 173 , and pipeline two 173 is in communication with pipeline one 172 .

[0034] Reference Figure 1 As shown, the pipeline 172 is connected to the evaporation tank 1, and an internal circulation ball valve 174 is provided on the pipeline 172. When it is opened, the internal circulation of the waste emulsion in the evaporation tank 1 is started.

[0035] Reference Figure 1 As shown, the second pipeline 173 is connected to the evaporation tank 1, and a diaphragm pump 175 and a circulation pump inlet shut-off valve 176 are provided on the second pipeline 173. The diaphragm pump 175 transfers the concentrated liquid to make the treated liquid circulate internally to prevent precipitation and scaling.

[0036] Reference Figure 1As shown, the vacuum cooling system 2 includes a condensing heat exchanger 21, a compressor 22, an air-cooled condenser 23, a refrigerant reflux regulating manual valve 24, an expansion valve 25 and a refrigeration system bypass valve 26. The condensing heat exchanger 21 is connected to the steam discharge pipe 13. A delivery pipeline 27 is provided on the condensing heat exchanger 21. A centrifugal pump 271 is provided on the delivery pipeline 27. The centrifugal pump 271 can pump the refrigerant liquid that has absorbed heat and evaporated in the condensing heat exchanger 21 from the low-pressure area to the high-pressure area, ensuring that the refrigerant continues to circulate in the system, helping to maintain the refrigerant flow in the system, and ensuring the stable operation of the condensing heat exchanger 21 and the entire refrigeration system.

[0037] Reference Figure 1 As shown, the condensing heat exchanger 21 is provided with a distilled water outlet 211 and a refrigerant outlet 212 near the steam exhaust pipe 13, and the condensing heat exchanger 21 is provided with a distilled water inlet 213 and a refrigerant inlet away from the steam exhaust pipe 13, so that the hot water vapor is condensed into liquid water to release the latent heat of vaporization.

[0038] Reference Figure 1 As shown, a pipe three 28 is arranged between the refrigerant outlet 212 and the evaporator 1, the compressor 22 is arranged on the pipe three 28, a pipe four 29 is arranged between the distilled water inlet 213 and the evaporator 1, the air-cooled condenser 23 is arranged on the pipe four 29, the refrigerant reflux regulating manual valve 24 is arranged on the pipe four 29, and the expansion valve 25 is arranged on the pipe four 29. The air-cooled condenser 23 is close to the evaporator 1, the expansion valve 25 is close to the condensing heat exchanger 21, and the refrigerant reflux regulating manual valve 24 is arranged between the air-cooled condenser 23 and the expansion valve 25.

[0039] Reference Figure 1 As shown, the refrigerant reflux flow rate can be manually adjusted to control the refrigeration effect of the condensing heat exchanger 21 and the system pressure. The refrigerant reflux regulating manual valve 24 can also provide a manual control means during system maintenance or abnormal conditions to ensure the safe operation of the system.

[0040] Reference Figure 1 As shown, a connecting pipe 291 is provided between pipe three 28 and pipe four 29, and a refrigeration system bypass valve 26 is provided on the connecting pipe 291 to adjust the refrigerant flow and system pressure. The refrigeration system bypass valve 26 can also provide a safe bypass channel during system maintenance or abnormal conditions to ensure the stability and safety of the system.

[0041] Reference Figure 2As shown, a sliding groove 18 is provided on the inner top wall of the evaporator 1, the length direction of the sliding groove 18 is the same as the length direction of the evaporator 1, and the axis direction of the sliding groove 18 coincides with the axis direction of the evaporator 1. The control mechanism 3 includes a sensor 1 31, a sensor 2, a touch switch 32, a sliding rod 33, a floating plate 34 and an abutting rod 35. There are four sliding rods 33, and the four sliding rods 33 are all fixed on the inner top wall of the evaporator 1. The length direction of the sliding rod 33 is the same as the length direction of the evaporator 1, and the four sliding rods 33 are evenly distributed at equal distances along the circumferential direction of the inner top wall of the evaporator 1.

[0042] Reference Figure 2 As shown, the sensor 1 31 is arranged in the top wall of the evaporator 1, the touch switch 32 is arranged in the sliding groove 18, the touch switch 32 is connected to the sensor 1 31, and the floating plate 34 is vertically slidably arranged on the sliding rod 33, and the axis centerline direction of the floating plate 34 coincides with the axis centerline direction of the evaporator 1.

[0043] Reference Figure 2 As shown, the abutment rod 35 is arranged on the top surface of the floating plate 34, the length direction of the abutment rod 35 is the same as the length direction of the evaporator 1, the axial direction of the abutment rod 35 coincides with the axial direction of the floating plate 34, and the abutment rod 35 can be vertically slidably arranged in the sliding groove 18.

[0044] Reference Figure 1 and Figure 2 As shown, the sensor 2 is arranged on the defoaming agent feeding pipe 14, the sensor 2 is connected to the defoaming agent angle seat valve 141, the sensor 1 31 and the sensor 2 can transmit signals, and bubbles are easily generated in the process of treating the waste emulsion. When the bubbles lift the floating plate 34, so that the abutting rod 35 abuts the touch switch 32, the sensor 1 31 and the sensor 2 are controlled by signal transmission to control the defoaming agent feeding pipe 14 to enter the evaporation tank 1, and eliminate the bubbles in the evaporation tank 1, which is beneficial to the normal reaction in the evaporation tank 1 and improves the overall stability in the process of treating the waste emulsion.

[0045] The implementation principle of the main body of a waste emulsion low-temperature concentration device in the embodiment of the present application is: In the process of treating the waste emulsion, the waste emulsion in the evaporation tank 1 is first preheated through the coil, and then the evaporation temperature is set to evaporate and concentrate the waste emulsion. After the evaporation cycle is completed, the concentrated liquid is discharged through the concentrated liquid pipeline. During the evaporation process, the vacuum cooling system 2 can control the overall refrigeration effect, which is beneficial to maintaining the stability of the overall device during the evaporation process. The entire operation process is simple and easy to control, which reduces the complexity of the operation of treating the waste emulsion and improves the efficiency of treating the waste emulsion.

[0046] The present application also discloses a low-temperature concentration process for waste emulsion, comprising the following steps: S1, preheating: after the raw water bucket reaches the middle liquid level, the water pump runs to generate vacuum, water automatically enters the evaporator 1, and the compressor 22 runs to generate heat to heat the wastewater in the evaporator 1. Under the vacuum state, the wastewater temperature rises to 30°C, the wastewater begins to evaporate, and the preheating is completed; S2, evaporation and concentration: the evaporation temperature is set to 35-40℃, and in a vacuum state (-95kPa), the compressor 22 compresses the refrigerant to generate heat. While the water evaporates rapidly, the refrigerant absorbs heat after being gasified through the expansion valve 25 to refrigerate. The vapor rises and meets the cold liquid to liquefy and enter the water storage tank. The refrigerant absorbs heat and is compressed and heated by the compressor 22 to reheat the wastewater. S3. Concentrate discharge: After one evaporation cycle is completed, the compression pump stops working, the concentrate pipeline is opened, the evaporation tank 1 is pressurized, and the concentrate is pressed into the concentrate barrel.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A main body of a waste emulsion low-temperature concentration device, characterized in that: The invention comprises an evaporator (1) for treating waste emulsion, wherein the evaporator (1) is provided with a feed inlet (11), a coil for heating is provided inside the evaporator (1), a steam discharge pipe (13), a defoamer feed pipe (14), a cleaning water feed pipe (15), a raw water inlet pipe (16), and a concentrated liquid discharge pipe (17) are connected to the evaporator (1), wherein the raw water inlet pipe (16) is located above the concentrated liquid discharge pipe (17), the cleaning water feed pipe (15) is located above the raw water inlet pipe (16), the defoamer feed pipe (14) is located above the cleaning water feed pipe (15), the steam discharge pipe (13) is located above the defoamer feed pipe (14), and the steam discharge pipe (13) is connected to a vacuum cooling system (2).

2. The main body of the waste emulsion low-temperature concentration equipment according to claim 1, characterized in that: The outlet of the concentrated liquid discharge pipe (17) is connected to a pipe 1 (172), the pipe 1 (172) is connected to the evaporation tank (1), and an internal circulation ball valve (174) is provided on the pipe 1 (172).

3. The main body of the waste emulsion low-temperature concentration equipment according to claim 2, characterized in that: The outlet of the concentrated liquid discharge pipe (17) is connected to a second pipe (173), the second pipe (173) is in communication with the first pipe (172), the second pipe (173) is connected to the evaporation tank (1), and a diaphragm pump (175) and a circulation pump inlet shut-off valve (176) are provided on the second pipe (173).

4. The main body of the waste emulsion low-temperature concentration equipment according to claim 1, characterized in that: The vacuum cooling system (2) comprises a condensing heat exchanger (21) connected to the steam exhaust pipe (13); the condensing heat exchanger (21) is provided with a distilled water outlet (211) and a refrigerant outlet (212) near the steam exhaust pipe (13); and the condensing heat exchanger (21) is provided with a distilled water inlet (213) and a refrigerant inlet away from the steam exhaust pipe (13).

5. The main body of the waste emulsion low-temperature concentration equipment according to claim 4, characterized in that: A pipeline three (28) is arranged between the refrigerant outlet (212) and the evaporation tank (1), and the vacuum cooling system (2) includes a compressor (22) arranged on the pipeline three (28).

6. The main body of the waste emulsion low-temperature concentration equipment according to claim 4, characterized in that: A pipe four (29) is provided between the distilled water inlet (213) and the evaporation tank (1), and the vacuum cooling system (2) comprises an air-cooled condenser (23) provided on the pipe four (29), a refrigerant return regulating manual valve (24) provided on the pipe four (29), and an expansion valve (25) provided on the pipe four (29), wherein the air-cooled condenser (23) is close to the evaporation tank (1), the expansion valve (25) is close to the condensation heat exchanger (21), and the refrigerant return regulating manual valve (24) is provided between the air-cooled condenser (23) and the expansion valve (25).

7. The main body of the waste emulsion low-temperature concentration equipment according to claim 6, characterized in that: A connecting pipe (291) is provided between the pipe three (28) and the pipe four (29), and the vacuum cooling system (2) comprises a refrigeration system bypass valve (26) provided on the connecting pipe (291).

8. The main body of the waste emulsion low-temperature concentration equipment according to claim 4, characterized in that: The condensing heat exchanger (21) is provided with a delivery pipeline (27), and the delivery pipeline (27) is provided with a centrifugal pump (271).

9. The main body of the waste emulsion low-temperature concentration equipment according to claim 1, characterized in that: The inner top wall of the evaporator (1) is provided with a sliding groove (18). The evaporator (1) is provided with a control mechanism (3). The control mechanism (3) comprises a sensor 1 (31) provided in the evaporator (1), a touch switch (32) connected to the sensor 1 (31), a sensor 2 provided on the defoaming agent feeding pipe (14), a slide bar (33) connected to the inner top wall of the evaporator (1), a floating plate (34) vertically slidably provided on the slide bar (33), and an abutting rod (35) capable of abutting against the touch switch (32). The touch switch (32) is provided in the sliding groove (18). The sensor 1 (31) and the sensor 2 can transmit signals. The abutting rod (35) is provided on the top surface of the floating plate (34).

10. A waste emulsion low temperature concentration process, according to any one of claims 1 to 9, a waste emulsion low temperature concentration equipment body, characterized in that: The steps include: S1, preheating: after the raw water bucket reaches the middle liquid level, the water pump starts to generate vacuum, water automatically enters the evaporation tank (1), and the compressor (22) starts to generate heat to heat the wastewater in the evaporation tank (1). Under the vacuum state, the wastewater temperature rises to 30°C, the wastewater starts to evaporate, and the preheating is completed; S2, evaporation and concentration: the evaporation temperature is set to 35-40°C, and in a vacuum state (-95kPa), the compressor (22) compresses the refrigerant to generate heat. While the water evaporates rapidly, the refrigerant absorbs heat after being vaporized through the expansion valve (25) to refrigerate. The vapor rises and meets the cold liquid to liquefy and enter the water storage tank. The refrigerant absorbs heat and is compressed by the compressor (22) to generate heat, thereby reheating the wastewater. S3. Concentrate discharge: After one evaporation cycle is completed, the compression pump stops working, the concentrate pipeline is opened, the evaporation tank (1) is pressurized, and the concentrate is pressed into the concentrate barrel.

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