Laboratory automatic condensation water diversion online cleaning device and cleaning method

Abstract

The invention relates to the technical field of condensers, in particular to an automatic condensation and water diversion online cleaning device and method for a laboratory. The device comprises a condenser, a water segregator, a cleaning box, a peristaltic pump, a nitrogen purging module and a control module, the water segregator is communicated with the condenser, the water segregator and the condenser are connected with a first cleaning pipeline and a second cleaning pipeline respectively, the cleaning box is communicated with the water inlet end of the first cleaning pipeline through the peristaltic pump, the water segregator is further connected with a third cleaning pipeline, and the nitrogen purging module comprises a nitrogen purging pipeline. The nitrogen purging pipeline is used for communicating with the first cleaning pipeline; the control module comprises a control system and a control valve set. The control valve set comprises a first control valve, a second control valve, a third control valve and a fourth control valve which are arranged on the first cleaning pipeline, the second cleaning pipeline, the third cleaning pipeline and the nitrogen purging pipeline respectively. By controlling all the valves and the peristaltic pump, automatic online cleaning of the water segregator and the condenser can be achieved, disassembly is not needed, and meanwhile shutdown is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of condensers, and particularly to an on-line cleaning device and cleaning method for automatic condensation and water separation in a laboratory. Background Art

[0002] In a laboratory environment, the condensation and water separation process is an important part of many experiments, such as the distillation and water separation steps in organic synthesis reactions. To ensure the accuracy and repeatability of experiments, the cleanliness of condensers and water separators is crucial.

[0003] The existing cleaning methods for condensers and water separators in laboratories usually require the experiment to be stopped. The experimenter disassembles the condenser and water separator from the experimental device, and then cleans them by ultrasonic cleaning or manual cleaning. This cleaning method consumes a large amount of time and manpower, and is not suitable for high-throughput laboratories and experimental environments that require long-term continuous operation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an on-line cleaning device and cleaning method for automatic condensation and water separation in a laboratory. By controlling each control valve and peristaltic pump through a control system, automatic on-line cleaning of the water separator and condenser can be achieved without disassembly, while reducing downtime.

[0005] In response to the above technical problem, the technical solution provided by the present invention is an on-line cleaning device for automatic condensation and water separation in a laboratory, including a condenser, a water separator, a cleaning box, a peristaltic pump, a nitrogen purging module, and a control module; wherein, the water separator is communicated with the condenser, a first cleaning pipeline and a second cleaning pipeline are respectively connected to the water separator and the condenser, the cleaning box is communicated with the water inlet end of the first cleaning pipeline through a peristaltic pump, a third cleaning pipeline is further connected to the water separator, and the water outlet ends of the third cleaning pipeline and the second cleaning pipeline are both communicated with the recovery end of the cleaning box. The nitrogen purging module includes a nitrogen purging pipeline for communicating with the first cleaning pipeline; the control module includes a control system and a control valve group. The control valve group includes a first control valve, a second control valve, a third control valve, and a fourth control valve respectively arranged on the first cleaning pipeline, the second cleaning pipeline, the third cleaning pipeline, and the nitrogen purging pipeline. The control system is used to control the start and stop of the peristaltic pump and the on-off of each control valve.

[0006] Further, a connection tee is arranged at one end of the water separator facing away from the condenser. Two ends of the connection tee are respectively connected to the first cleaning pipeline and the water separator, and the other end is connected to a fourth cleaning pipeline. The control valve group further includes a fifth control valve arranged on the fourth cleaning pipeline. The water outlet end of the fourth cleaning pipeline is communicated with the recovery end of the cleaning box.

[0007] Further, a first pipeline and a second pipeline are arranged on the water separator at intervals along its length direction. One ends of the first pipeline and the second pipeline facing away from the water separator converge and are connected to a third pipeline. The water outlet end of the third pipeline facing away from the first pipeline is used to communicate with the recovery end of the cleaning box. The first pipeline, the second pipeline and the third pipeline form the third cleaning pipeline, and the third control valve is arranged on the third pipeline.

[0008] Further, a cleaning box docking member is connected to the recovery end of the cleaning box, and the water outlet ends of the second cleaning pipeline, the third cleaning pipeline and the fourth cleaning pipeline are connected to the cleaning box docking member.

[0009] Further, the air outlet end of the nitrogen purging pipeline communicates with the first cleaning pipeline and is located between the peristaltic pump and the first control valve.

[0010] Further, a waste water discharge end is also arranged on the cleaning box, and a waste water discharge pipeline is connected to the waste water discharge end.

[0011] In view of the above technical problems, the technical solution provided by the present invention is also a laboratory automation condensation water separation on-line cleaning method, including the following steps:

[0012] Step 1: Open the first control valve and the second control valve through the control system, close the third control valve, the fourth control valve and the fifth control valve, and control the peristaltic pump to pump the cleaning liquid in the cleaning box into the first cleaning pipeline. The cleaning liquid flows through the first cleaning pipeline, the water separator, the condenser and the second cleaning pipeline and returns to the cleaning box to complete the on-line cleaning of the condenser and its connecting pipelines.

[0013] Step 2: Open the first control valve and the third control valve through the control system, close the second control valve, the fourth control valve and the fifth control valve, and control the peristaltic pump to pump the cleaning liquid in the cleaning box into the first cleaning pipeline. The cleaning liquid flows through the first cleaning pipeline, the water separator, the first pipeline, the second pipeline and the third pipeline and returns to the cleaning box to complete the on-line cleaning of the water separator and its connecting pipelines.

[0014] Step 3: Open the first control valve and the fifth control valve through the control system, close the second control valve, the third control valve and the fourth control valve, and control the peristaltic pump to pump the cleaning liquid in the cleaning box into the first cleaning pipeline. The cleaning liquid flows through the first cleaning pipeline and the fourth cleaning pipeline and returns to the cleaning box to complete the on-line cleaning of the first cleaning pipeline and the fourth cleaning pipeline.

[0015] Step 4: Open the first control valve, the second control valve, the third control valve, the fourth control valve and the fifth control valve through the control system, and introduce nitrogen into the nitrogen purging pipeline. The nitrogen purges the inside of the water separator, the condenser and each pipeline to realize the drying and cleaning of the water separator, the condenser and its cleaning pipelines.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] (1) By setting up the first cleaning pipeline, the second cleaning pipeline and the third cleaning pipeline, and cooperating with the peristaltic pump and the control module, it is possible to realize the automatic on-line cleaning of the condenser, the water separator and their connecting pipelines without disassembling the condenser and the water separator from the experimental device. The experimental efficiency is improved, and it is applicable to high-throughput laboratories and experimental environments that require long-term continuous operation. At the same time, by controlling the on-off of different control valves through the control system, the step-by-step cleaning of the condenser, the water separator and the connecting pipelines can be realized, so that each component can be effectively cleaned and the cleaning effect can be guaranteed.

[0018] By using the nitrogen purging module, the water separator, the condenser and each pipeline can be purged and dried after the cleaning is completed, further removing the residual cleaning liquid and impurities, ensuring the cleanliness and dryness of the equipment, thereby improving the accuracy and repeatability of the experiment and providing guarantee for the reliability of the experimental results. Description of the Drawings

[0019] Figure 1 is the internal structure diagram of a laboratory automatic condensation and water separation on-line cleaning device in Embodiment 1 of the present invention.

[0020] Figure 2 is the flow chart of a laboratory automatic condensation and water separation on-line cleaning device in Embodiment 1 of the present invention.

[0021] In the figure: 1. Condenser; 2. Water separator; 3. Cleaning box; 4. Peristaltic pump; 5. Nitrogen purging pipeline; 6. First cleaning pipeline; 7. Second cleaning pipeline; 8. Third cleaning pipeline; 81. First pipeline; 82. Second pipeline; 83. Third pipeline; 9. Fourth cleaning pipeline; 10. Cleaning box docking part; 11. First control valve; 12. Second control valve; 13. Third control valve; 14. Fourth control valve; 15. Fifth control valve; 16. Connecting tee; 17. Machine shell; 18. Waste water discharge pipeline. Detailed Embodiments

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application: Specific Embodiment 1:

[0024] Refer to Figures 1 to 2, an on-line cleaning device for laboratory automation condensation and water separation (hereinafter referred to as the cleaning device) of the present invention has an overall box structure, including a machine shell 17, a condenser 1, a water separator 2, a cleaning box 3, a peristaltic pump 4, a nitrogen purging module and a control module. The condenser 1 is used to cool the gas so that the steam in the gas condenses into a liquid, and the water separator 2 is used to separate the organic phase and the water phase. The condenser 1, the water separator 2 and the control module are all arranged inside the machine shell 17, and the peristaltic pump 4 and the cleaning box 3 are arranged outside the machine shell 17 for easy disassembly and replacement.

[0025] Specifically, the water separator 2 is connected to the condenser 1, and a first cleaning pipeline 6 and a second cleaning pipeline 7 are respectively connected to the opposite ends of the water separator 2 and the condenser 1. The cleaning box 3 stores cleaning liquid. The peristaltic pump 4 is respectively connected to the liquid outlet end of the cleaning box 3 and the water inlet end of the first cleaning pipeline 6. The peristaltic pump 4 is used to connect the cleaning box 3 and the first cleaning pipeline 6, and the peristaltic pump 4 is used to push the cleaning liquid to circulate in the cleaning pipeline to ensure the uniform distribution of the cleaning liquid. A recovery end for recovering the cleaning liquid is arranged on the cleaning box 3, and a third cleaning pipeline 8 is also connected to the water separator 2, and the water outlet ends of the third cleaning pipeline 8 and the second cleaning pipeline 7 are both connected to the recovery end of the cleaning box 3 to realize the circulation of the cleaning liquid, so that the cleaning liquid can circulate and flow, ensuring the continuity of the cleaning process.

[0026] Specifically, the nitrogen purging module includes a nitrogen purging pipeline 5. The air inlet of the nitrogen purging pipeline 5 is connected to an external common nitrogen system. The nitrogen purging pipeline 5 is used to be connected to the first cleaning pipeline 6 to introduce nitrogen into the condenser 1, the water separator 2 and each cleaning pipeline. By using the nitrogen purging module, after the cleaning process is completed, the inside of the system is purged to ensure the dryness and cleanliness of the condenser 1, the water separator 2 and each cleaning pipeline.

[0027] The control module includes a control system and a control valve group. The control valve group includes a first control valve 11, a second control valve 12, a third control valve 13 and a fourth control valve 14 respectively arranged on the first cleaning pipeline 6, the second cleaning pipeline 7, the third cleaning pipeline 8 and the nitrogen purging pipeline 5. The first control valve 11, the second control valve 12, the third control valve 13 and the fourth control valve 14 respectively control the on-off of the corresponding pipelines. The control system is a PLC control system, and the control system is used to control the start and stop of the peristaltic pump 4 and the on-off of each control valve. Automatic on-line cleaning and nitrogen purging are realized.

[0028] Preferably, in this embodiment, as Figure 1As shown in the figure, on the water separator 2, a first pipeline 81 and a second pipeline 82 are arranged at intervals along the length direction of the water separator 2. One end of the first pipeline 81 and the second pipeline 82 facing away from the water separator 2 are convergently connected to a third pipeline 83. The water outlet end of the third pipeline 83 facing away from the first pipeline 81 is used to communicate with the recovery end of the cleaning box 3. The first pipeline 81, the second pipeline 82 and the third pipeline 83 form a third cleaning pipeline 8. A third control valve 13 is arranged on the third pipeline 83. With this setting, the inside of the water separator 2 can be cleaned from multiple directions, the inside of the water separator 2 can be comprehensively cleaned, the cleanliness of the water separator 2 can be ensured, and its working performance and experimental accuracy can be improved.

[0029] Preferably, in this embodiment, as Figure 1 shown in the figure, a connecting tee 16 is arranged at one end of the water separator 2 facing away from the condenser 1. Two ends of the connecting tee 16 are respectively connected to the first cleaning pipeline 6 and the water separator 2, and the other end is connected to a fourth cleaning pipeline 9. The control valve group further includes a fifth control valve 15 arranged on the fourth cleaning pipeline 9. The water outlet end of the fourth cleaning pipeline 9 is communicated with the recovery end of the cleaning box 3. Specifically, a first control valve 11 is arranged at the water outlet end of the first cleaning pipeline 6. The first cleaning pipeline 6 is communicated with the connecting tee 16 through the first control valve 11. The fifth control valve 15 is arranged at the water inlet end of the fourth cleaning pipeline 9. The fourth cleaning pipeline 9 is communicated with the connecting tee 16 through the fifth control valve 15. By using the fifth control valve 15, the on-off of the fourth cleaning pipeline 9 can be flexibly controlled according to the actual cleaning requirements, so as to separately realize the cleaning of the first cleaning pipeline 6.

[0030] Preferably, in this embodiment, as Figure 1 、 2 shown in the figure, a cleaning box docking part 10 is connected to the recovery end of the cleaning box 3. The water outlet ends of the second cleaning pipeline 7, the third cleaning pipeline 8 and the fourth cleaning pipeline 9 are connected to the cleaning box docking part 10. The water outlet ends of the second cleaning pipeline 7, the third cleaning pipeline 8 and the fourth cleaning pipeline 9 are centrally connected, which simplifies the pipeline connection structure, facilitates the docking of each cleaning pipeline with the cleaning box 3, and realizes circular cleaning.

[0031] In this embodiment, as Figure 1 、 2As shown, the outlet end of the nitrogen purging pipeline 5 is directly connected to the first cleaning pipeline 6, specifically arranged between the peristaltic pump 4 and the first control valve 11. When performing nitrogen purging, the fourth control valve 14 is opened to inject nitrogen into the first cleaning pipeline 6. The nitrogen enters the cleaning device along the first cleaning pipeline 6, completing the nitrogen purging of the condenser 1, the water separator 2, each cleaning pipeline, and each control valve. Of course, in other embodiments, the outlet end of the nitrogen purging pipeline 5 can also be connected to the cleaning box docking member 10 or other cleaning pipelines, as long as it can achieve injecting nitrogen into the cleaning device to complete nitrogen purging. At the same time, through the fourth control valve 14, when performing cleaning liquid cleaning, the cleaning liquid is prevented from entering the nitrogen purging pipeline 5.

[0032] In this embodiment, the first cleaning pipeline 6, the second cleaning pipeline 7, the third cleaning pipeline 8, the fourth cleaning pipeline 9, the nitrogen purging pipeline 5, each control valve, and their corresponding connecting components are all made of corrosion-resistant materials to enhance the durability and stability of the equipment. Selecting the corresponding corrosion-resistant materials according to the corrosion degree of different cleaning agents is common knowledge well-known to those skilled in the art and will not be elaborated here.

[0033] In this embodiment, the cleaning box 3 is also provided with a waste water discharge end, and the waste water discharge end is connected to a waste water discharge pipeline 18. After cleaning and waste water purging, according to the actual usage of the cleaning liquid, the waste water discharge end is opened, and the waste cleaning liquid after cleaning can be discharged and collected through the waste water discharge pipeline 18 to prevent pollution of the laboratory environment and ensure the cleanliness and safety of the laboratory environment.

[0034] In this embodiment, the first control valve 11, the second control valve 12, the third control valve 13, the fourth control valve 14, and the fifth control valve 15 of the control valve group are all solenoid valves.

[0035] The usage method of the cleaning device of the present invention specifically includes the following steps: (Please confirm with the inventor whether the following step description is accurate)

[0036] Step 1: Through the control system, the first control valve 11 and the second control valve 12 are opened, the third control valve 13, the fourth control valve 14, and the fifth control valve 15 are closed, and the peristaltic pump 4 is controlled to pump the cleaning liquid in the cleaning box 3 into the first cleaning pipeline 6, and the cleaning liquid passes through the first cleaning pipeline 6, the water separator 2, the condenser 1, and the second cleaning pipeline 7 and is injected into the cleaning box docking member 10, and then flows back to the cleaning box 3 to complete the on-line cleaning of the condenser 1 and its connecting pipelines.

[0037] Step 2: Open the first control valve 11 and the third control valve 13 through the control system, close the second control valve 12, the fourth control valve 14 and the fifth control valve 15, and control the peristaltic pump 4 to pump the cleaning liquid in the cleaning box 3 into the first cleaning pipeline 6. The cleaning liquid passes through the first cleaning pipeline 6, the water distributor 2, the first pipeline 81, the second pipeline 82 and the third pipeline 83 and is injected into the cleaning box adapter 10, and then flows back to the cleaning box 3 to complete the online cleaning of the water distributor 2 and its connecting pipelines.

[0038] Step 3: Open the first control valve 11 and the fifth control valve 15 through the control system, close the second control valve 12, the third control valve 13 and the fourth control valve 14, and control the peristaltic pump 4 to pump the cleaning liquid in the cleaning box 3 into the first cleaning pipeline 6. The cleaning liquid passes through the first cleaning pipeline 6 and the fourth cleaning pipeline 9 and is injected into the cleaning box adapter 10, and then flows back to the cleaning box 3 to complete the online cleaning of the first cleaning pipeline 6 and the fourth cleaning pipeline 9.

[0039] During the process from Step 1 to Step 3, in addition to completing the cleaning of the corresponding cleaning pipelines, the control valves on the corresponding cleaning pipelines are also cleaned.

[0040] Step 4: Open the first control valve 11, the second control valve 12, the third control valve 13, the fourth control valve 14 and the fifth control valve 15 through the control system, and introduce nitrogen into the nitrogen purge pipeline 5. The nitrogen purges the inside of the water distributor 2, the condenser 1 and each cleaning pipeline to achieve the dry cleaning of the water distributor 2, the condenser 1 and each cleaning pipeline.

[0041] The outlet end of the nitrogen purge pipeline 5 is directly connected to the first cleaning pipeline 6. Therefore, during the nitrogen purge process, the online step-by-step nitrogen purge can also be carried out according to the above-mentioned Steps 1 to 3 for different components to meet the effective cleaning and drying treatment of each component. Similarly, during the nitrogen purge process, the purge of each control valve is also completed to keep each control valve dry and clean.

[0042] Step 5: After the purge is completed, the wastewater generated during the cleaning process is collected and discharged through the wastewater discharge pipeline.

[0043] In summary, for the cleaning device of the present invention, by setting the first cleaning pipeline 6, the second cleaning pipeline 7 and the third cleaning pipeline 8, cooperating with the peristaltic pump 4 and the control module, it is possible to realize the automatic online cleaning of the condenser 1, the water distributor 2 and their connecting pipelines without disassembling the condenser 1 and the water distributor 2 from the experimental device. The experimental efficiency is improved, and it is applicable to high-throughput laboratories and experimental environments that require long-term continuous operation. At the same time, by controlling the opening and closing of different control valves through the control system, the step-by-step cleaning of the condenser 1, the water distributor 2 and the connecting pipelines can be realized, so that each component is effectively cleaned and the cleaning effect is guaranteed.

[0044] Using the nitrogen purging module, after the cleaning is completed, the water separator 2, the condenser 1 and each pipeline can be purged and dried to further remove the residual cleaning liquid and impurities, ensuring the cleanliness and dryness of the equipment, thereby improving the accuracy and repeatability of the experiment and providing guarantee for the reliability of the experimental results.

[0045] Moreover, the cleaning device can be cleaned in real time without stopping the machine, maintaining the clean state of the condenser 1 and the water separator 2 in real time during the experiment, reducing downtime and improving the utilization rate of the experimental equipment. At the same time, through automatic control, the cleaning process is more efficient, reducing the time for experiment preparation and subsequent maintenance. It liberates the hands of the experimental personnel, improves the cleaning efficiency and quality, and reduces the maintenance cost and environmental pollution.

[0046] An embodiment of the online cleaning method for automatic condensation and water separation in a laboratory of the present invention. The cleaning method of the present invention has been included in the above-mentioned embodiment of the online cleaning device for automatic condensation and water separation in a laboratory, and will not be elaborated here.

[0047] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0048] In the description of the embodiments of the present application, it should be noted that if terms such as "upper", "lower", "horizontal", "inner", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0049] In addition, if the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined.

Claims

1. An on-line cleaning device for automatic condensation and water separation in a laboratory, characterized in that, It includes a condenser, a water separator, a cleaning box, a peristaltic pump, a nitrogen purging module and a control module; wherein, the water separator is communicated with the condenser, a first cleaning pipeline and a second cleaning pipeline are respectively connected to the water separator and the condenser, the cleaning box is communicated with the water inlet end of the first cleaning pipeline through the peristaltic pump, a third cleaning pipeline is further connected to the water separator, and the water outlet ends of the third cleaning pipeline and the second cleaning pipeline are both communicated with the recovery end of the cleaning box. The nitrogen purging module includes a nitrogen purging pipeline which is used to be communicated with the first cleaning pipeline; The control module includes a control system and a control valve group. The control valve group includes a first control valve, a second control valve, a third control valve and a fourth control valve respectively arranged on the first cleaning pipeline, the second cleaning pipeline, the third cleaning pipeline and the nitrogen purging pipeline. The control system is used to control the start and stop of the peristaltic pump and the opening and closing of each control valve.

2. The on-line cleaning device for automatic condensation and water separation in a laboratory according to claim 1, wherein One end of the water separator facing away from the condenser is provided with a connecting tee. Two of the three ends of the connecting tee are respectively connected to the first cleaning pipeline and the water separator, and the other end is connected with a fourth cleaning pipeline. The control valve group further includes a fifth control valve arranged on the fourth cleaning pipeline. The water outlet end of the fourth cleaning pipeline is communicated with the recovery end of the cleaning box.

3. The on-line cleaning device for laboratory automation condensation and water separation according to claim 2, characterized in that, On the water separator, a first pipeline and a second pipeline are arranged at intervals along its length direction. One ends of the first pipeline and the second pipeline facing away from the water separator converge and are connected to a third pipeline. The water outlet end of the third pipeline facing away from the first pipeline is used to be communicated with the recovery end of the cleaning box. The first pipeline, the second pipeline and the third pipeline form the third cleaning pipeline, and the third control valve is arranged on the third pipeline.

4. The on-line cleaning device for automatic condensation water separation in a laboratory according to claim 3, characterized in that, The recovery end of the cleaning box is connected with a cleaning box docking part, and the water outlet ends of the second cleaning pipeline, the third cleaning pipeline and the fourth cleaning pipeline are connected to the cleaning box docking part.

5. The on-line cleaning device for automatic condensation and water separation in a laboratory according to claim 1, characterized in that, The gas outlet end of the nitrogen purging pipeline is communicated with the first cleaning pipeline and is located between the peristaltic pump and the first control valve.

6. The on-line cleaning device for automatic condensation and water separation in a laboratory according to claim 1, characterized in that A waste water discharge end is further arranged on the cleaning box, and the waste water discharge end is connected with a waste water discharge pipeline.

7. An online cleaning method for automatic condensation and water separation in a laboratory, characterized in that, Using the laboratory automation condensation and water separation on-line cleaning device described in claim 6 above, it includes the following steps: Step 1: Open the first control valve and the second control valve through the control system, close the third control valve, the fourth control valve and the fifth control valve, and control the peristaltic pump to pump the cleaning liquid in the cleaning box into the first cleaning pipeline. The cleaning liquid flows through the first cleaning pipeline, the water separator, the condenser and the second cleaning pipeline and then returns to the cleaning box to complete the on-line cleaning of the condenser and its connecting pipelines; Step 2: Open the first control valve and the third control valve through the control system, close the second control valve, the fourth control valve and the fifth control valve, and control the peristaltic pump to pump the cleaning liquid in the cleaning box into the first cleaning pipeline. The cleaning liquid flows through the first cleaning pipeline, the water separator, the first pipeline, the second pipeline and the third pipeline and then returns to the cleaning box to complete the on-line cleaning of the water separator and its connecting pipelines; Step 3: Open the first control valve and the fifth control valve through the control system, close the second control valve, the third control valve and the fourth control valve, and control the peristaltic pump to pump the cleaning liquid in the cleaning box into the first cleaning pipeline. The cleaning liquid flows back to the cleaning box through the first cleaning pipeline and the fourth cleaning pipeline to complete the on-line cleaning of the first cleaning pipeline and the fourth cleaning pipeline; Step 4: Open the first control valve, the second control valve, the third control valve, the fourth control valve and the fifth control valve through the control system, introduce nitrogen into the nitrogen purge pipeline, and purge the inside of the water separator, the condenser and each pipeline with nitrogen to achieve the drying and cleaning of the water separator, the condenser and their cleaning pipelines.

Images