Anti-crystallization high-concentration industrial wastewater treatment process and equipment

Abstract

The application discloses a kind of anti-crystallization high-concentration industrial wastewater treatment processes and equipment, it is related to wastewater treatment field, including base, erecting on the mounting table of base, steam tank is threaded in the mounting table, condenser is located at one end of steam tank and is located at the top of base, circulating water tank is located at the bottom of condenser and is located at the top of base, circulating water cooler is located at one side of circulating water tank, heat pump compressor is located at the top of circulating water cooler, heat dissipation fan is located at the top of mounting table and is located above heat pump compressor;The application is a kind of anti-crystallization high-concentration industrial wastewater treatment processes and equipment, which can be disturbed by water circulation to prevent crystallization, can automatically clean the pipeline, and has high heat exchange efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of wastewater treatment, specifically to a process and equipment for treating high-concentration industrial wastewater that prevents crystallization. Background Technology

[0002] Currently, the mainstream process route for achieving deep treatment and zero discharge of high-concentration wastewater is generally: "physicochemical treatment => biochemical treatment => membrane separation treatment (permeate reuse) => concentrated liquid evaporation and disposal". Concentration and volume reduction is the final and necessary step in the above process. Technologies that can be used for concentrated liquid volume reduction include evaporation, membrane distillation, and electrodialysis. Membrane distillation and electrodialysis technologies have high requirements for the preparation of membrane materials or electrodialysis devices, resulting in high treatment costs and limited practical applications. Low-temperature distillation is widely used globally for treating highly difficult wastewaters due to its low energy consumption, high efficiency, and fully automated intelligent operation. However, during the evaporation process, crystallization or scaling is easily induced, clogging the evaporator and pipelines, affecting the discharge of treated products, and shortening the service life of the evaporation device.

[0003] According to application number CN201310626578.3, a forced circulation crystallization device for industrial wastewater treatment includes a crystallizer and a horizontal double-pass forced circulation heat exchanger. The crystallizer shell has a concentrated brine inlet on its side wall, and a discharge pipe is connected to the bottom of the crystallizer. The concentrated brine from the discharge pipe passes through a circulation pump and the forced circulation heat exchanger sequentially before returning to the crystallizer. Steam in the crystallizer passes through a demister and is then extracted from the top of the crystallizer by a thermal compressor and enters the forced circulation heat exchanger to heat and concentrate the concentrated brine.

[0004] The aforementioned patent document describes an invention that uses a dual-tube forced circulation heat exchanger to return the crystallized concentrated brine to the crystallizer for further separation, thereby enhancing the separation effect and avoiding blockage. However, it suffers from the problem of not being able to automatically clean the pipelines and having low heat exchange efficiency. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a high-concentration industrial wastewater treatment process and equipment that prevents crystallization, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A process for treating high-concentration industrial wastewater to prevent crystallization includes the following steps;

[0008] Step 1: Equipment Inspection: Before operation, a comprehensive inspection of the low-temperature negative pressure evaporator is required to ensure that it is in good working condition. This includes checking the equipment's sealing, the integrity of the vacuum system, the normality of the heating system, and the accuracy of the control system. Based on the process requirements and equipment characteristics, set appropriate evaporation temperature, pressure, and flow parameters.

[0009] Step 2, Low-temperature evaporation treatment: The raw material wastewater is filtered and added into a low-temperature negative pressure evaporator. The inside of the low-temperature negative pressure evaporator is evacuated to form a negative pressure environment. Under negative pressure, the heating system is turned on to heat the raw material. Under negative pressure, the boiling point of water is lowered, so the evaporation process can be carried out at a lower temperature.

[0010] Step 3: Circulation and Turbulence Prevention. By installing circulation and turbulence devices on the evaporation equipment, the concentrated liquid at the bottom of the low-temperature evaporator is returned to the top to achieve hydraulic turbulence, which effectively slows down the crystallization of the concentrated liquid. At the same time, the solution in the evaporator is forced to circulate to reduce temperature difference loss and promote water evaporation.

[0011] Step 4: Condensate Recycling: After the evaporated steam enters the condensing equipment, it is cooled and condensed into water. This water is then cooled and used as cooling water inside the condensing equipment. After absorbing heat, it is collected and discharged from the system.

[0012] Step 5: Automatic Pipeline Cleaning: By adjusting the connection points of key pipelines, the recovered condensate is pumped into each pipeline of the low-temperature negative pressure evaporator, and the wastewater is discharged from the system to clean the entire pipeline system and remove residues and dirt from inside the equipment.

[0013] A device for treating high-concentration industrial wastewater to prevent crystallization includes a base, an mounting platform erected above the base, a steam tank mounted on the mounting platform, a condenser located at the top of the base and at one end of the steam tank, a circulating water tank located at the top of the base and at the bottom of the condenser, a circulating water cooler located on one side of the circulating water tank, a heat pump compressor located at the top of the circulating water cooler, and a cooling fan located at the top of the mounting platform and above the heat pump compressor.

[0014] Preferably, the steam tank includes a sight glass at one side end, a vacuum pump located at the other end of the steam tank and mounted on the top of the mounting platform, a pressure gauge located above the sight glass, a level gauge located on one side of the sight glass, a diaphragm pump located on one side of the top of the steam tank and mounted on the mounting platform, and a reflux pump located on the other side of the bottom of the steam tank and mounted above the base.

[0015] Preferably, the diaphragm pump includes a feed pipe connected to the input end, a filter valve sleeved on the side of the feed pipe, and a collection tank located at the bottom of the filter valve.

[0016] Preferably, the reflux pump includes a first reflux pipe connecting one end of the bottom of the steam tank to the input end of the reflux pump, a second reflux pipe connecting the output end of the reflux pump to one side of the top of the steam tank, a drain pipe located at the center of the bottom of the steam tank, and a first electronic valve located at the outlet end of the drain pipe.

[0017] Preferably, the condenser includes two steam pipes connecting the top of the steam tank and the tops of both sides of the condenser, a second electronic valve located in the middle of the steam pipes, a first conduit located on one side of the condenser and connected to the top side of the steam tank, and a three-way electronic valve located in the middle of the first conduit.

[0018] Preferably, the circulating water tank includes a second conduit connected to the three-way electronic valve on one side, a water outlet faucet located at the bottom of the same side of the circulating water tank, a third conduit located at the bottom of the circulating water tank, and a circulating water pump located at the outlet end of the third conduit.

[0019] Preferably, the circulating water cooler includes a fourth conduit connected to the circulating water pump at one top end, an ejector sleeved in the middle of the fourth conduit, a fifth conduit connecting the middle of the ejector and the outlet of the condenser, and a sixth conduit connecting the other top end of the circulating water cooler to the bottom of the condenser.

[0020] Preferably, the heat pump compressor includes a first air guide pipe connected to one end of the circulating water cooler, and a second air guide pipe connecting the heat pump compressor to the middle of the steam tank.

[0021] Preferably, the cooling fan includes a third air guide pipe connected to the bottom of the steam tank and a fourth air guide pipe connecting the cooling fan to the other end of the circulating water cooler.

[0022] In summary, the present invention has the following main beneficial effects:

[0023] In this embodiment, based on previous technical experience, a reflux pump is installed at the bottom of the evaporator to reflux the concentrated liquid at the bottom of the low-temperature evaporator back to the top, thereby achieving hydraulic turbulence. The proposed hydraulic turbulence method can effectively slow down the crystallization of the concentrated liquid. At the same time, the solution in the evaporator is forced to circulate, which reduces the temperature difference loss of the solution in the evaporator and effectively promotes the evaporation of water.

[0024] By setting up filter elements before the raw material wastewater enters the system to intercept crystals, large crystalline raw material wastewater can be blocked outside the system, such impurities can be collected in a concentrated manner, and the probability of crystallization after feeding can be effectively reduced.

[0025] By circulating the condensate and using low-temperature Freon to cool the heated condensate into a condensing medium that can be used by the condenser, heat exchange between the condensate and the low-temperature Freon is achieved. This allows the condensate to be reused as a medium and also heats the low-temperature Freon, reducing the energy consumption of the heat pump compressor.

[0026] By installing electronic three-way valves on key pipelines, the circulating water pipeline can be converted into the system's cleaning pipeline after the low-temperature evaporation process is completed. With the help of automated control technology, the evaporator pipeline can be automatically cleaned, ensuring that the pipeline is clean and unobstructed after each use. Attached Figure Description

[0027] Figure 1 This is a process flow diagram of the present invention;

[0028] Figure 2 This is an isometric view of the overall processing equipment of the present invention;

[0029] Figure 3 This is a left view of the overall processing device of the present invention;

[0030] Figure 4 This is a top view of the overall processing device of the present invention;

[0031] Figure 5 This is a front view of the overall processing device of the present invention;

[0032] Figure 6 This is a rear view of the overall processing device of the present invention;

[0033] Figure 7 This is a right view of the overall processing device of the present invention.

[0034] Attached Figure Descriptions: 10. Base; 11. Mounting Platform; 12. Steam Tank; 13. Condenser; 14. Circulating Water Tank; 15. Circulating Water Cooler; 16. Heat Pump Compressor; 17. Cooling Fan; 121. Sight Glass; 122. Vacuum Pump; 123. Pressure Gauge; 124. Level Gauge; 125. Diaphragm Pump; 126. Return Pump; 1251. Feed Pipe; 1252. Filter Valve; 1253. Collection Tank; 1261. First Return Pipe; 1262. Second Return Pipe; 12 63. Drain pipe; 1264. First electronic valve; 131. Steam pipe; 132. Second electronic valve; 133. First conduit; 134. Three-way electronic valve; 141. Second conduit; 142. Water tap; 143. Third conduit; 144. Circulating water pump; 151. Fourth conduit; 152. Ejector; 153. Fifth conduit; 154. Sixth conduit; 161. First air guide pipe; 162. Second air guide pipe; 171. Third air guide pipe; 172. Fourth air guide pipe. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] The embodiments of the present invention will now be described. Example

[0037] Please refer to the appendix carefully. Figure 1 , 2 As shown in Figures 3, 4, and 5, a high-concentration industrial wastewater treatment process for preventing crystallization includes the following steps;

[0038] Step 1: Equipment Inspection: Before operation, a comprehensive inspection of the low-temperature negative pressure evaporator is required to ensure that it is in good working condition. This includes checking the equipment's sealing, the integrity of the vacuum system, the normality of the heating system, and the accuracy of the control system. Based on the process requirements and equipment characteristics, set appropriate evaporation temperature, pressure, and flow parameters.

[0039] Step 2, Low-temperature evaporation treatment: The raw material wastewater is filtered and added into a low-temperature negative pressure evaporator. The inside of the low-temperature negative pressure evaporator is evacuated to form a negative pressure environment. Under negative pressure, the heating system is turned on to heat the raw material. Under negative pressure, the boiling point of water is lowered, so the evaporation process can be carried out at a lower temperature.

[0040] Step 3: Circulation and Turbulence Prevention. By installing circulation and turbulence devices on the evaporation equipment, the concentrated liquid at the bottom of the low-temperature evaporator is returned to the top to achieve hydraulic turbulence, which effectively slows down the crystallization of the concentrated liquid. At the same time, the solution in the evaporator is forced to circulate to reduce temperature difference loss and promote water evaporation.

[0041] Step 4: Condensate Recycling: After the evaporated steam enters the condensing equipment, it is cooled and condensed into water. This water is then cooled and used as cooling water inside the condensing equipment. After absorbing heat, it is collected and discharged from the system.

[0042] Step 5: Automatic Pipeline Cleaning: By adjusting the connection points of key pipelines, the recovered condensate is pumped into each pipeline of the low-temperature negative pressure evaporator, and the wastewater is discharged from the system to clean the entire pipeline system and remove residues and dirt from inside the equipment.

[0043] A device for treating high-concentration industrial wastewater to prevent crystallization includes a base 10, a mounting platform 11 mounted on the base 10, a steam tank 12 mounted on the mounting platform 11, a condenser 13 located at one end of the steam tank 12 and on top of the base 10, a circulating water tank 14 located at the bottom of the condenser 13 and on top of the base 10, a circulating water cooler 15 located on one side of the circulating water tank 14, a heat pump compressor 16 located on top of the circulating water cooler 15, and a cooling fan 17 located on top of the heat pump compressor 16 and on top of the mounting platform 11. The steam tank 12 includes a viewing mirror 121 at one side, a vacuum pump 122 located at the other end of the steam tank 12 and mounted on top of the mounting platform 11, a pressure gauge 123 located above the viewing mirror 121, and a pressure gauge 123 located on the viewing mirror 121. The liquid level gauge 124 is located on one side of the mirror 121; the diaphragm pump 125 is located on one side of the top of the steam tank 12 and mounted on the mounting platform 11; and the reflux pump 126 is located on the other side of the bottom of the steam tank 12 and mounted above the base 10. The diaphragm pump 125 includes a feed pipe 1251 connected to the input end, a filter valve 1252 sleeved on the side of the feed pipe 1251, and a collection tank 1253 located at the bottom of the filter valve 1252. The reflux pump 126 includes a first reflux pipe 1261 connected to one end of the bottom of the steam tank 12 and the input end of the reflux pump 126; a second reflux pipe 1262 connected to the output end of the reflux pump 126 and one side of the top of the steam tank 12; a drain pipe 1263 located in the center of the bottom of the steam tank 12; and a first electronic valve 1264 located at the outlet end of the drain pipe 1263.

[0044] It should be noted that the steam tank 12 contains a Freon spiral tube. The Freon, pressurized and heated by the heat pump compressor 16, enters the Freon spiral tube from the second air guide pipe 162 in the middle of the steam tank 12 and exits from the Freon spiral tube from the third air guide pipe 171 at the bottom of the steam tank 12. This allows the hotter Freon to be efficiently heated from top to bottom at the top of the raw material wastewater, resulting in a faster evaporation rate. The filter valve 1252 is removable and the filter screen can be replaced. The collection tank 1253 is rotatably detachable. The level gauge 124 controls the start and stop of the diaphragm pump 125 via a PLC element.

[0045] Furthermore, start the vacuum pump 122 to extract the air from the steam tank 12, and observe the air pressure inside the steam tank 12 through the pressure gauge 123 to achieve a suitable air pressure environment.

[0046] Furthermore, the raw material wastewater enters through the feed pipe 1251, and the diaphragm pump 125 is started to pump the raw material wastewater from the filter valve 1252 into the steam tank 12. Large crystals are blocked and precipitated into the collection tank 1253. When a certain volume is collected, it can be replaced and cleaned.

[0047] Furthermore, the raw material wastewater enters the steam tank 12, and the level gauge 124 monitors the liquid level inside the steam tank 12 in real time. Based on the liquid level, the diaphragm pump 125 is started and stopped by the PLC. The state of the raw material wastewater can be observed through the sight glass 121.

[0048] Furthermore, during the evaporation process, the reflux pump 126 is started, which draws the raw material wastewater from the bottom of the steam tank 12 through the first reflux pipe 1261 and returns it to the top of the steam tank 12 through the second reflux pipe 1262, forming a turbulent reflux.

[0049] Furthermore, after evaporation is complete, the first electronic valve 1264 is opened, and the wastewater concentrate is discharged through the drain pipe 1263.

[0050] Please refer to the appendix carefully. Figure 2 , 3 As shown in Figures 6 and 7, the condenser 13 includes two steam pipes 131 connecting the top of the steam tank 12 and the tops of both sides of the condenser 13, a second electronic valve 132 located in the middle of the steam pipes 131, a first conduit 133 located on one side of the condenser 13 and connected to the top side of the steam tank 12, and a three-way electronic valve 134 located in the middle of the first conduit 133; the circulating water tank 14 includes a second conduit 141 located on one side connected to the three-way electronic valve 134, and an outlet valve located at the bottom of the same side of the circulating water tank 14. The water tap 142, the third conduit 143 located at the bottom of the circulating water tank 14, and the circulating water pump 144 located at the outlet of the third conduit 143; the circulating water cooler 15 includes a fourth conduit 151 located at one end of the top and connected to the circulating water pump 144, an ejector 152 sleeved in the middle of the fourth conduit 151, a fifth conduit 153 connecting the middle of the ejector 152 and the outlet of the condenser 13, and a sixth conduit 154 connecting the other end of the top of the circulating water cooler 15 to the bottom of the condenser 13.

[0051] It should be noted that the condenser 13 contains a spiral condenser tube. The condenser tube is cooled by the circulating water pumped out by the circulating water pump 144 by the circulating water cooler 15. The inlet end of the condenser tube is connected to the sixth conduit 154, and the outlet end of the condenser tube is connected to the first conduit 133. The condensate cooled by the condenser 13 does not enter the circulating water tank 14, but is cooled by the circulating water cooler 15 and then enters the condenser tube as a cooling medium. After being heated, it enters the circulating water tank 14 for collection. The condensate in the fifth conduit 153 will not flow back under the control of the ejector 152.

[0052] Furthermore, the three-way electronic valve 134 closes the water outlet end of the first conduit 133 and connects the second conduit 141. The second electronic valve 132 in the middle of the steam pipe 131 is opened, and the raw liquid steam enters the condenser 13 through the steam pipe 131. After being condensed into condensate, it enters the ejector 152 through the fifth conduit 153.

[0053] Furthermore, the circulating water pump 144 is started, and the circulating water in the circulating water tank 14 is drawn through the third conduit 143. Together with the condensate, it is pumped into the circulating water cooler 15 through the fourth conduit 151 for further cooling. The cooling water enters the spiral condenser tube in the condenser 13 through the sixth conduit 154 as a medium. The cooling water heated by steam enters the circulating water tank 14 through the second conduit 141.

[0054] Furthermore, when the water level in the circulating water tank 14 is too high, the water outlet faucet 142 can be opened to drain the water.

[0055] Furthermore, after the evaporation process is completed, the three-way electronic valve 134 closes the water inlet end of the second conduit 141 and connects the water outlet end of the first conduit 133. The water in the circulating water tank 14 enters the steam tank 12 through the third conduit 143, the fourth conduit 151, the sixth conduit 154 and the first conduit 133, and then passes through the first return pipe 1261 and the second return pipe 1262, and is finally discharged through the drain pipe 1263, thus realizing the self-cleaning of the pipeline.

[0056] Please refer to the appendix carefully. Figure 2 , 5 As shown in Figures 6 and 7, the heat pump compressor 16 includes a first air guide pipe 161 connected to one end of the circulating water cooler 15, and a second air guide pipe 162 connected to the middle of the heat pump compressor 16 and the steam tank 12; the cooling fan 17 includes a third air guide pipe 171 connected to the bottom of the steam tank 12, and a fourth air guide pipe 172 connected to the other end of the circulating water cooler 15.

[0057] It should be noted that the circulating water cooler 15 also has a spiral Freon pipe, with the inlet and outlet ends connected to the first air guide pipe 161 and the fourth air guide pipe 172 respectively. The cooling fan 17 can cool and depressurize the high-temperature and high-pressure Freon, causing its temperature to drop sharply. The low-temperature and low-pressure Freon serves as the cooling medium of the circulating water cooler 15, exchanging heat with the circulating water mixed with condensate.

[0058] Furthermore, the heat pump compressor 16 heats and pressurizes the low-temperature, low-pressure Freon in the first gas pipe 161, and sends it into the steam tank 12 through the second gas pipe 162;

[0059] Furthermore, the high-temperature and high-pressure Freon in the steam tank 12 enters the cooling fan 17 through the third gas pipe 171 and is cooled and depressurized.

[0060] Furthermore, the low-temperature, low-pressure Freon enters the circulating water cooler 15 through the fourth gas pipe 172 to exchange heat with the circulating water, and then enters the heat pump compressor 16 through the first gas pipe 161.

[0061] The working principle of this invention is as follows:

[0062] First, the vacuum pump 122 is started to extract the air from the steam tank 12. The pressure inside the steam tank 12 is observed through the pressure gauge 123 to ensure a suitable pressure environment is reached. Raw material wastewater enters through the feed pipe 1251. The diaphragm pump 125 is started, pumping the raw material wastewater into the steam tank 12 through the filter valve 1252. Large crystals are blocked and precipitate into the collection tank 1253. When a certain volume is collected, the tank can be replaced for cleaning. The level gauge 124 monitors the liquid level inside the steam tank 12 in real time. Based on the liquid level, the diaphragm pump 125 is controlled to start and stop via PLC. The state of the raw material wastewater can be observed through the sight glass 121 during the evaporation process. In the process, the reflux pump 126 starts, drawing raw material wastewater from the bottom of the steam tank 12 through the first reflux pipe 1261, and then re-flowing it back into the top of the steam tank 12 through the second reflux pipe 1262, forming a turbulent reflux. After evaporation is complete, the first electronic valve 1264 opens, and the concentrated wastewater is discharged through the drain pipe 1263. The three-way electronic valve 134 closes the outlet end of the first conduit 133 and connects to the second conduit 141. The second electronic valve 132 in the middle of the steam pipe 131 opens, and the raw liquid steam enters the condenser 13 through the steam pipe 131. After being condensed into condensate, it enters the ejector 152 through the fifth conduit 153. The circulating water pump 144 starts, and through... The third conduit 143 draws circulating water from the circulating water tank 14, and together with the condensate, pumps it into the circulating water cooler 15 via the fourth conduit 151 for further cooling. The cooling water then enters the spiral condenser tubes inside the condenser 13 via the sixth conduit 154 as a medium. The cooling water heated by steam enters the circulating water tank 14 via the second conduit 141. Furthermore, when the water level in the circulating water tank 14 is too high, the outlet tap 142 can be opened to drain the water. The heat pump compressor 16 heats and pressurizes the low-temperature, low-pressure Freon in the first gas conduit 161, and sends it into the steam tank 12 via the second gas conduit 162. The high-temperature, high-pressure Freon in the steam tank 12 then flows through the third gas conduit... The refrigerant 171 enters the cooling fan 17 and is cooled and depressurized. The low-temperature, low-pressure refrigerant enters the circulating water cooler 15 through the fourth air pipe 172 to exchange heat with the circulating water, and then enters the heat pump compressor 16 through the first air pipe 161. After the evaporation process is completed, the three-way electronic valve 134 closes the water inlet of the second conduit 141 and connects the water outlet of the first conduit 133. The water in the circulating water tank 14 enters the steam tank 12 through the third conduit 143, the fourth conduit 151, the sixth conduit 154 and the first conduit 133, and then enters the steam tank 12 through the first return pipe 1261 and the second return pipe 1262, and is finally discharged through the drain pipe 1263, realizing the self-cleaning of the pipeline.

[0063] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A high-concentration industrial wastewater treatment device for preventing crystallization, comprising a base (10) and a mounting platform (11) erected above the base (10), characterized in that, A steam tank (12) is mounted on the mounting platform (11), a condenser (13) is located on the top of the base (10) and at one end of the steam tank (12), a circulating water tank (14) is located on the top of the base (10) and at the bottom of the condenser (13), a circulating water cooler (15) is located on one side of the circulating water tank (14), a heat pump compressor (16) is located on the top of the circulating water cooler (15), and a cooling fan (17) is located on the top of the mounting platform (11) and above the heat pump compressor (16). The condenser (13) includes two steam pipes (131) connecting the top of the steam tank (12) and the tops of both sides of the condenser (13), a second electronic valve (132) located in the middle of the steam pipes (131), and a first conduit (133) located on one side of the condenser (13) and connected to the top side of the steam tank (12). The circulating water tank (14) includes a three-way electronic valve (134) located in the middle of the first conduit (133), a second conduit (141) connected to the three-way electronic valve (134) on one side, a water outlet (142) located at the bottom of the same side of the circulating water tank (14), a third conduit (143) located at the bottom of the circulating water tank (14), a circulating water pump (144) located at the outlet of the third conduit (143), and a circulating water cooler (15) including a fourth conduit (151) connected to the circulating water pump (144) at one top end, an ejector (152) sleeved in the middle of the fourth conduit (151), a fifth conduit (153) connecting the middle of the ejector (152) and the outlet of the condenser (13), and a sixth conduit (154) connecting the other top end of the circulating water cooler (15) and the bottom of the condenser (13).

2. The anti-crystallization high-concentration industrial wastewater treatment equipment according to claim 1, wherein the steam tank (12) includes a sight glass (121) at one side end, a vacuum pump (122) at the other end of the steam tank (12) and installed on the top of the mounting platform (11), a pressure gauge (123) above the sight glass (121), a level gauge (124) on one side of the sight glass (121), a diaphragm pump (125) on one side of the top of the steam tank (12) and installed on the mounting platform (11), and a reflux pump (126) on the other side of the bottom of the steam tank (12) and installed above the base (10).

3. The anti-crystallization high-concentration industrial wastewater treatment equipment according to claim 2, characterized in that, The diaphragm pump (125) includes a feed pipe (1251) connected to the input end, a filter valve (1252) sleeved on the side of the feed pipe (1251), and a collection tank (1253) located at the bottom of the filter valve (1252).

4. The anti-crystallization high-concentration industrial wastewater treatment equipment according to claim 2, characterized in that, The reflux pump (126) includes a first reflux pipe (1261) connecting one end of the bottom of the steam tank (12) to the input end of the reflux pump (126), a second reflux pipe (1262) connecting the output end of the reflux pump (126) and one side of the top of the steam tank (12), a drain pipe (1263) located at the center of the bottom of the steam tank (12), and a first electronic valve (1264) located at the outlet end of the drain pipe (1263).

5. The anti-crystallization high-concentration industrial wastewater treatment equipment according to claim 1, characterized in that, The heat pump compressor (16) includes a first air pipe (161) connected to one end of the circulating water cooler (15) and a second air pipe (162) connected to the middle of the heat pump compressor (16) and the steam tank (12).

6. The anti-crystallization high-concentration industrial wastewater treatment equipment according to claim 2, characterized in that, The cooling fan (17) includes a third air pipe (171) connected to the bottom of the steam tank (12) and a fourth air pipe (172) connected to the other end of the cooling fan (17) and the circulating water cooler (15).

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