Vacuum concentration system and method based on artificial intelligence

Abstract

The invention relates to a vacuum concentration system and method based on artificial intelligence, and belongs to the technical field of evaporation equipment. Comprising a heating chamber, an evaporation chamber and a condenser which are sequentially connected, and further comprises a vapor-liquid separator, the evaporation chamber is connected with the condenser through the vapor-liquid separator, and the vapor-liquid separator is located above the evaporation chamber. After primary condensation and secondary condensation are carried out at the first-stage condenser and the second-stage condenser, the steam temperature is still about 80 DEG C, and due to the fact that boiling points of solvents are different, for example, the boiling point of alcohol is low, chilled water at the temperature of 2-7 DEG C is introduced at the third-stage condenser for condensation, and the recovery efficiency is improved.

Description

Technical Field

[0001] The invention relates to a concentration system and method, and belongs to the technical field of evaporation equipment. Background Art

[0002] The vacuum concentration process is complex, and temperature control of the concentrator is a key element of the entire process. The temperature of the concentrator is influenced by the combined effects of the steam system, vacuum system, and cooling water system. Publication number CN103007555B describes a vacuum concentrator. The technical solution disclosed includes a heater and an evaporator, with the heater's outlet communicating with the evaporator's steam inlet. A condenser is provided within the condenser, with the evaporator's steam outlet communicating with the condensation channel inlet. A liquid collector is disposed below the condenser, extending through the top of the collector into the collector. A vacuum tube is provided within the collector, and the distance between the vacuum tube and the condensation channel outlet is suitable for ensuring that condensate flowing out of the condensation channel outlet is not carried away by the vacuum system. A drain pump is connected to the drain port, with the condensation channel outlet located above the condensate level within the collector. This device can be used to concentrate liquids in industries such as chemical, pharmaceutical, and food. However, it utilizes only a single condenser for condensation, failing to consider the impact of the solvent's boiling point on condensation efficiency. This results in low solvent recovery efficiency when the solvent's boiling point is low.

[0003] Therefore, there is an urgent need to propose a vacuum concentration system and method based on artificial intelligence to solve the above technical problems. Summary of the Invention

[0004] To address the aforementioned issues, an artificial intelligence-based vacuum concentrator system and method are provided. A brief overview of the invention is provided below to provide a basic understanding of certain aspects of the invention. It should be understood that this overview is not an exhaustive overview of the invention. It is not intended to identify key or important aspects of the invention, nor is it intended to limit the scope of the invention.

[0005] The technical solution of the present invention:

[0006] A vacuum concentration system based on artificial intelligence includes a heating chamber, an evaporation chamber and a condenser, wherein the heating chamber, the evaporation chamber and the condenser are connected in sequence. The system also includes a vapor-liquid separator, wherein the evaporation chamber is connected to the condenser via the vapor-liquid separator, and the vapor-liquid separator is located above the evaporation chamber.

[0007] Preferably: it also includes a bent pipe, the upper end of the evaporation chamber has a steam outlet, the condenser has a condenser tube inlet, the condenser tube inlet and the vapor-liquid separator are both located above the steam outlet, the inlet of the vapor-liquid separator is connected to the steam outlet through the bent pipe, and the outlet of the vapor-liquid separator is connected to the condenser inlet of the condenser.

[0008] Preferably: it also includes a conduit, which is an L-shaped pipe, including a horizontal pipe, an arc pipe and a vertical pipe. The horizontal pipe, the arc pipe and the vertical pipe are connected in sequence. The arc pipe is a 180° semicircular bend pipe. The arc pipe is set in a downward concave direction. A small amount of liquid can be stored here to play a sealing role. The upper end of the vertical pipe of the conduit is connected to the lower end discharge port of the vapor-liquid separator, and the horizontal pipe of the conduit passes through the side wall of the evaporation chamber and extends into the evaporation chamber. The horizontal pipe of the conduit is located below the steam outlet, and a butterfly valve is provided at the lowest point of the arc pipe.

[0009] Preferably: it also includes a jacket and an air guide pipe, the outer side of the evaporation chamber is wrapped with a jacket, the jacket has a jacket steam inlet and a jacket steam outlet, there is a gap between the jacket and the outer side of the evaporation chamber, the jacket steam inlet and the jacket steam outlet are both connected to the gap, one end of the air guide pipe is connected to the air hole on the upper side of the evaporation chamber, the other end of the air guide pipe passes through the gap and extends out, and a pressure sensor is provided on the air guide pipe.

[0010] Preferably: it also includes a temperature sensor, a chain electrode and a fixed ring, a fixed ring is provided at the lower part of the evaporation chamber, the chain electrode is inserted into the interior of the evaporation chamber from the upper end through hole of the evaporation chamber and is connected to the fixed ring, the upper end of the evaporation chamber has a cleaning hole for installing a rotating nozzle, the upper end of the evaporation chamber is installed with a light sight glass, the lower end of the evaporation chamber has an evaporation chamber outlet, the side of the evaporation chamber has an evaporation chamber inlet, the side of the evaporation chamber has a sight glass and a manhole, the sight glass is located on the upper side of the manhole, the lower side of the evaporation chamber is provided with a temperature sensor, the evaporation chamber outlet and the evaporation chamber inlet are connected to the heating chamber.

[0011] Preferably: it also includes a liquid guide pipe and a density sensor, the upper side of the heating chamber has a liquid medicine outlet connected to its shell side, the lower end of the heating chamber has a liquid medicine inlet and outlet connected to its shell side, the upper side of the heating chamber has a heating chamber steam inlet connected to its tube side, the lower side of the heating chamber has a heating chamber steam outlet connected to its tube side, the lower part of the heating chamber has a tube side drain valve connected to its tube side, the liquid medicine outlet is connected to the evaporation chamber inlet, the evaporation chamber outlet is connected to the liquid medicine inlet at the lower part of the heating chamber through the liquid guide pipe, the liquid medicine inlet and outlet are connected to the diluent feed port and the concentrated liquid discharge port, a stop valve is respectively provided between the diluent feed port, the concentrated liquid discharge port and the liquid medicine inlet and outlet, a density sensor is provided at the middle of the horizontal pipe of the liquid guide pipe, the heating chamber steam inlet is connected to the steam device for heating, a steam pressure sensor is provided at the steam outlet of the steam device, the outlet of the steam device is also connected to the jacket steam inlet, or the steam device, the heating chamber steam inlet, the tube side, the heating chamber steam outlet, and the jacket steam inlet are connected in sequence, and the outer sides of the heating chamber, the liquid guide pipe, and the bent pipe are all wrapped with an insulation layer.

[0012] Preferably: the condenser includes a primary condenser, a secondary condenser, a tertiary condenser, a liquid collector and a water pump, the outlet of the vapor-liquid separator is connected to the shell-side inlet of the upper part of the primary condenser, the shell-side outlet of the lower part of the primary condenser is connected to the shell-side inlet of the upper part of the secondary condenser through a condenser connecting pipe, the shell-side outlet of the lower part of the secondary condenser is connected to the shell-side inlet of the tertiary condenser, the shell-side outlet of the tertiary condenser is connected to the shell-side inlet of the lower part of the secondary condenser, the tube side of the primary condenser has a primary cooling water inlet and a primary cooling water outlet for connecting to the pump and the water tank, the cooling water tank, the water pump of the primary condenser, the primary cooling water inlet, the tube side of the primary condenser, and the primary cooling water outlet are connected in sequence in a loop, the tube side of the secondary condenser has a secondary cooling water inlet and a secondary cooling water outlet for connecting to the pump and the water tank, the cooling water tank, the water pump of the secondary condenser, the secondary cooling water inlet, the secondary condenser The pipe side of the condenser and the secondary cooling water outlet are connected in a cycle in sequence, the cooling water tank is filled with room temperature water, and the chilled water tank is filled with 2-7℃ water. The pipe side of the tertiary condenser has a tertiary cooling water inlet and a tertiary cooling water outlet for connecting the pump and the water tank. The chilled water tank, the water pump of the tertiary condenser, the tertiary cooling water inlet, the pipe side of the tertiary condenser, and the tertiary cooling water outlet are connected in a cycle in sequence. The condensed water outlets at the bottom of the primary condenser and the secondary condenser are connected to the liquid collector below them. The front side of the liquid collector is provided with a liquid collector sight glass, the back side of the liquid collector is provided with a liquid collector sight light mirror, the upper and lower sides of the liquid collector are provided with an upper liquid level gauge and a lower liquid level gauge, the lower end of the liquid collector is provided with a drainage pipe, the drainage pipe is connected to the inlet of the water pump, and the outlet of the water pump is provided with a one-way valve. The three-stage condenser adopts a threaded tube spirally wound cooler, the water pump is a condensate pump, and the side of the secondary condenser is provided with a vacuum tube, which is connected to the vacuum pump.

[0013] Preferably: it also includes a raw material tank, the upper opening of the raw material tank is connected to the dosing tank pipeline and the cleaning water tank pipeline through valves, the lower opening of the raw material tank is connected to the discharge pipeline and the delivery pipeline through valves, the delivery pipeline is connected to the feed port, valves are required at the inlet and outlet of the present invention, the raw material tank is used for buffering and caching, to ensure the continuity of the process, improve efficiency, and is suitable for large-size meter-level standards.

[0014] An artificial intelligence-based vacuum concentration method, using an artificial intelligence-based vacuum concentration system, includes the following steps:

[0015] Step 1: A vacuum pump is used to maintain a negative pressure in the heating chamber, evaporation chamber, condenser, and vapor-liquid separator. The raw material tank delivers the liquid medicine diluent to the shell side of the heating chamber through the feed port. The diluent liquid level in the heating chamber is above the lower edge of the liquid medicine outlet but not above the upper edge of the liquid medicine outlet. Steam is input into the tube side of the heating chamber through the steam inlet of the heating chamber to heat the liquid medicine.

[0016] Step 2: The liquid medicine enters the evaporation chamber through the liquid medicine outlet, and then flows back to the shell side of the heating chamber through the evaporation chamber outlet and the liquid guide pipe in sequence; the steam enters the vapor-liquid separator through the steam outlet and the elbow in sequence;

[0017] Step 3: The steam is separated at the vapor-liquid separator, and the condensate containing the drug components at the vapor-liquid separator flows through a conduit into the heating chamber for collection, while the solvent vapor enters the condenser. The high and low arrangement and the arrangement of the conduits not only recover the condensate containing the drug components to a great extent, but also effectively prevent it from entering the condenser, thereby improving the collected purity of the solvent and reducing the loss of drug components.

[0018] Step 4: The steam is condensed in the condenser, and the condensed solvent is finally recovered through the liquid collector; after the steam temperature is still around 80°C after the first and second condensations at the primary condenser and the secondary condenser, due to the different boiling points of the solvents, such as the lower boiling point of alcohol, 2-7°C chilled water is introduced into the third condenser for condensation, and the chilled water outlet can be connected to the cooling water tank. The present invention improves the recovery efficiency.

[0019] Preferably, in step 2, the tube-side steam of the heating chamber enters into the gap through the jacket steam inlet to heat the evaporation chamber and the air guide pipe.

[0020] The present invention has the following beneficial effects:

[0021] 1. When the air duct is opened, the air is heated by the steam in the gap, thereby eliminating foam while reducing the impact on evaporation efficiency, achieving steam reuse and improving energy utilization;

[0022] 2. The raw material tank of the present invention is used to buffer the liquid medicine, ensure the continuity of the process, improve efficiency, and is suitable for large-scale meter-grade standards;

[0023] 3. The height of the evaporation chamber and the gas-liquid separator, as well as the arrangement of the conduits, not only recover the condensate containing the drug components to a great extent but also effectively prevent it from entering the condenser, thereby improving the purity of the collected solvent and reducing the loss of drug components.

[0024] 4. In the present invention, after the first and second condensations are performed at the primary condenser and the secondary condenser, the steam temperature is still around 80°C. Due to the different boiling points of the solvents, such as the lower boiling point of alcohol, chilled water at 2-7°C is introduced into the third condenser for condensation to improve the recovery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of a vacuum concentration system based on artificial intelligence;

[0026] Figure 2 It is a structural diagram of the evaporation chamber;

[0027] Figure 3 It is a structural diagram of the heating chamber;

[0028] Figure 4 It is a structural diagram of the condenser;

[0029] Figure 5 It is a side view of the condenser;

[0030] Figure 6 It is a display panel for a vacuum concentration system based on artificial intelligence;

[0031] Figure 7 It is an intelligent control model;

[0032] Figure 8 It is a network topology diagram.

[0033] In the figure: 1-heating chamber, 2-evaporation chamber, 3-condenser, 4-first-stage condenser, 5-second-stage condenser, 6-third-stage condenser, 7-liquid collector, 8-water pump, 9-gas-liquid separator, 10-conduit, 11-elbow, 12-jacket, 13-air guide tube, 14-liquid guide tube, 15-density sensor, 16-temperature sensor, 17-chain electrode, 18-fixing ring, 19-pressure sensor, 20-condenser connecting pipe, 21-vacuum tube, 22-raw material tank, 41-first-stage cooling water inlet, 42-first-stage cooling water outlet, 51-second-stage cooling water inlet, 52-second-stage cooling water outlet, 61-third-stage cooling water inlet, 62-third-stage cooling water outlet, 71-upper Liquid level gauge, 72-lower liquid level gauge, 73-liquid collector sight glass, 74-liquid collector sight light mirror, 101-liquid outlet, 102-liquid inlet and outlet, 103-feed port, 104-discharge port, 105-pipeline drain valve, 106-heating chamber steam inlet, 107-steam pressure sensor, 108-heating chamber steam outlet, 121-jacket steam inlet, 122-jacket steam outlet, 201-steam outlet, 202-evaporation chamber outlet, 203-evaporation chamber inlet, 204-sight glass, 205-cleaning hole, 206-manhole, 207-light sight glass, 221-dosing tank pipeline, 222-cleaning water tank pipeline, 223-discharge pipeline, 224-transport pipeline. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0035] Specific implementation method 1: Combination Figure 1-6 This embodiment describes an artificial intelligence-based vacuum concentration system, comprising a heating chamber 1, an evaporation chamber 2, and a condenser 3, wherein the heating chamber 1, the evaporation chamber 2, and the condenser 3 are sequentially connected. The system also comprises a vapor-liquid separator 9, wherein the evaporation chamber 2 is connected to the condenser 3 via the vapor-liquid separator 9, and the vapor-liquid separator 9 is located above the evaporation chamber 2.

[0036] The evaporation chamber 2 further includes a 90° elbow 11. The upper end of the evaporation chamber 2 has a steam outlet 201. The condenser 3 has a condenser tube-side inlet. The condenser tube-side inlet and the vapor-liquid separator 9 are both located above the steam outlet 201. The inlet of the vapor-liquid separator 9 is connected to the steam outlet 201 through the elbow 11, and the outlet of the vapor-liquid separator 9 is connected to the condenser inlet of the condenser 3.

[0037] The duct 10 is further comprised of an L-shaped pipe, comprising a transverse pipe, an arc-shaped pipe, and a longitudinal pipe, the transverse pipe, the arc-shaped pipe, and the longitudinal pipe being connected in sequence. The arc-shaped pipe is a 180° semicircular bend, and is arranged in a downwardly concave direction. A small amount of liquid can be stored here, which serves as a seal. The upper end of the longitudinal pipe of the duct 10 is connected to the lower end discharge outlet of the vapor-liquid separator 9. The transverse pipe of the duct 10 passes through the side wall of the evaporation chamber 2 and extends into the evaporation chamber 2. The transverse pipe of the duct 10 is located below the steam outlet 201. A butterfly valve is provided at the lowest point of the arc-shaped pipe for draining or replenishing liquid.

[0038] It also includes a jacket 12 and an air guide pipe 13. The outer side of the evaporation chamber 2 is wrapped with a jacket 12. The jacket 12 has a jacket steam inlet 121 on the upper side and a jacket steam outlet 122 on the lower side. There is a gap between the jacket 12 and the outer side of the evaporation chamber 2. The jacket steam inlet 121 and the jacket steam outlet 122 are both connected to the gap. One end of the air guide pipe 13 is connected to the air hole on the upper side of the evaporation chamber 2, and the other end of the air guide pipe 13 passes through the gap and extends out. A pressure sensor 19 is provided on the air guide pipe 13 for detecting the vacuum degree of the evaporation chamber. When the valve on the air guide pipe is opened to adjust the pressure, the air is heated by the steam in the gap, thereby eliminating foam while reducing the impact on evaporation efficiency. Through ingenious design, energy utilization is improved under the premise of fully considering the overall layout during actual installation.

[0039] It also includes a temperature sensor 16, a chain electrode 17 and a fixing ring 18. The fixing ring 18 is provided at the lower part of the evaporation chamber 2. The chain electrode 17 is inserted into the interior of the evaporation chamber 2 from the upper end through hole of the evaporation chamber 2 and is connected to the fixing ring 18. The upper end of the evaporation chamber 2 has a cleaning hole 205 for installing a rotary nozzle. The upper end of the evaporation chamber 2 is installed with a light sight glass 207. The lower end of the evaporation chamber 2 has an evaporation chamber outlet 202, and the side of the evaporation chamber 2 has an evaporation chamber inlet 203. The side of the evaporation chamber 2 has a sight glass 204 and a manhole 206. The sight glass 204 is located on the upper side of the manhole 206 for easy observation and maintenance. The lower side of the evaporation chamber 2 is provided with a temperature sensor 16. The evaporation chamber outlet 202 and the evaporation chamber inlet 203 are connected to the heating chamber 1.

[0040] The heating chamber 1 also includes a liquid guide tube 14 and a density sensor 15. The upper side of the heating chamber 1 has a liquid medicine outlet 101 connected to its shell side, the lower end of the heating chamber 1 has a liquid medicine inlet and outlet 102 connected to its shell side, the upper side of the heating chamber 1 has a heating chamber steam inlet 106 connected to its tube side, the lower side of the heating chamber 1 has a heating chamber steam outlet 108 connected to its tube side, the lower part of the heating chamber 1 has a tube side drain valve 105 connected to its tube side, the liquid medicine outlet 101 is connected to the evaporation chamber inlet 203, the evaporation chamber outlet 202 is connected to the liquid medicine inlet at the lower part of the heating chamber 1 through the liquid guide tube 14, the liquid medicine inlet and outlet 102 are connected to the diluent feed port 103 and the concentrated liquid discharge port 104, the diluent feed port 103 , a stop valve is provided between each of the concentrate discharge port 104 and the liquid medicine inlet and outlet 102, the liquid guide pipe 14 is a 90° elbow, a density sensor 15 is provided in the middle of the horizontal pipe of the liquid guide pipe 14 for detecting the concentration of the liquid medicine, the heating chamber steam inlet 106 is connected to the steam device for heating, a steam pressure sensor 107 is provided at the steam outlet of the steam device, the outlet of the steam device is also connected to the jacket steam inlet 121, or the steam device, the heating chamber steam inlet 106, the pipe process, the heating chamber steam outlet 108, and the jacket steam inlet 121 are connected in sequence to achieve the reuse of steam, improve utilization efficiency, and save energy. The outside of the heating chamber 1, the liquid guide pipe 14, and the elbow 11 are all wrapped with an insulation layer;

[0041] The condenser 3 includes a primary condenser 4, a secondary condenser 5, a tertiary condenser 6, a liquid collector 7 and a water pump 8. The outlet of the vapor-liquid separator 9 is connected to the shell side inlet of the upper part of the primary condenser 4, the shell side outlet of the lower part of the primary condenser 4 is connected to the shell side inlet of the upper part of the secondary condenser 5 through the condenser connecting pipe 20, the shell side outlet of the lower part of the secondary condenser 5 is connected to the shell side inlet of the tertiary condenser 6, and the shell side outlet of the tertiary condenser 6 is connected to the shell side inlet of the lower part of the secondary condenser 5. The tube side of the primary condenser 4 has a primary cooling water inlet 41 and a primary cooling water outlet 42 for connecting the pump and the water tank. The cooling water tank, the water pump of the primary condenser, the primary cooling water inlet 41, the tube side of the primary condenser, and the primary cooling water outlet 42 are connected in a circular manner. The tube side of the secondary condenser 5 has a secondary cooling water inlet 51 and a secondary cooling water outlet 52 for connecting the pump and the water tank. The cooling water tank, the water pump of the secondary condenser, the secondary cooling water inlet 51, the tube side of the secondary condenser , the secondary cooling water outlet 52 is connected in a circular manner, the cooling water tank is filled with room temperature water, the chilled water tank is filled with 2-7°C water, the pipe side of the tertiary condenser 6 has a tertiary cooling water inlet 61 and a tertiary cooling water outlet 62 for connecting the pump and the water tank, the chilled water tank, the water pump of the tertiary condenser, the tertiary cooling water inlet 61, the pipe side of the tertiary condenser, and the tertiary cooling water outlet 62 are connected in a circular manner, and the condensed water outlets at the bottom of the primary condenser 4 and the secondary condenser 5 are connected to the liquid collector 7 below them. The front side of the liquid collector 7 is provided with a liquid collector sight glass 73, the rear side of the liquid collector 7 is provided with a liquid collector sight glass 74, the upper and lower sides of the liquid collector 7 are provided with an upper liquid level gauge 71 and a lower liquid level gauge 72, the lower end of the liquid collector 7 is provided with a drainage pipe, the drainage pipe is connected to the inlet of the water pump 8, the outlet of the water pump 8 is provided with a one-way valve 9, the tertiary condenser 6 adopts a threaded tube spirally wound cooler, the water pump 8 is a condensate pump, and the side of the secondary condenser 5 is provided with a vacuum tube 21, which is connected to the vacuum pump;

[0042] It also includes a raw material tank 22, the upper opening of which is connected to a dosing tank pipeline 221 and a cleaning water tank pipeline 222 through valves, and the lower opening of the raw material tank 22 is connected to a discharge pipeline 223 and a delivery pipeline 224 through valves, and the delivery pipeline 224 is connected to the feed port 103. Valves are required at the inlet and outlet of the present invention, and the raw material tank 22 is used for buffering and caching to ensure the continuity of the process and improve efficiency. It is suitable for large-size meter-level standards.

[0043] Specific implementation method 2: Combination Figure 1-8This embodiment describes an artificial intelligence-based vacuum concentration method, which uses an artificial intelligence-based vacuum concentration device, including a heating chamber 1, an evaporation chamber 2, and a condenser 3, wherein the heating chamber 1, the evaporation chamber 2, and the condenser 3 are connected in sequence. The device also includes a vapor-liquid separator 9, wherein the evaporation chamber 2 is connected to the condenser 3 via the vapor-liquid separator 9, and the vapor-liquid separator 9 is located above the evaporation chamber 2.

[0044] The evaporation chamber 2 further includes a curved pipe 11. The upper end of the evaporation chamber 2 has a steam outlet 201. The vapor-liquid separator 9 is located above the steam outlet 201. The inlet of the vapor-liquid separator 9 is connected to the steam outlet 201 through the curved pipe 11. The outlet of the vapor-liquid separator 9 is connected to the condenser 3.

[0045] The conduit 10 is an L-shaped pipe including a horizontal pipe, an arc-shaped pipe and a vertical pipe. The horizontal pipe, the arc-shaped pipe and the vertical pipe are connected in sequence. The arc-shaped pipe is a semicircular curved pipe. The vertical pipe of the conduit 10 is connected to the lower end of the vapor-liquid separator 9. The horizontal pipe of the conduit 10 extends into the evaporation chamber 2.

[0046] The evaporation chamber 2 further includes a jacket 12 and an air guide pipe 13. The outer side of the evaporation chamber 2 is wrapped with the jacket 12. The jacket 12 has a jacket steam inlet 121 and a jacket steam outlet 122. A gap is formed between the jacket 12 and the outer side of the evaporation chamber 2. The jacket steam inlet 121 and the jacket steam outlet 122 are both connected to the gap. One end of the air guide pipe 13 is connected to the air hole on the upper side of the evaporation chamber 2. The other end of the air guide pipe 13 passes through the gap and extends out. A pressure sensor 19 is provided on the air guide pipe 13.

[0047] The evaporation chamber 2 further includes a temperature sensor 16, a chain electrode 17, and a fixed ring 18. The fixed ring 18 is provided at the lower part of the evaporation chamber 2. The chain electrode 17 is inserted into the interior of the evaporation chamber 2 from the upper end through-hole of the evaporation chamber 2 and connected to the fixed ring 18. The upper end of the evaporation chamber 2 has a cleaning hole 205 for installing a rotary nozzle. The upper end of the evaporation chamber 2 is installed with a light sight glass 207. The lower end of the evaporation chamber 2 has an evaporation chamber outlet 202. The side of the evaporation chamber 2 has an evaporation chamber inlet 203. The side of the evaporation chamber 2 has a sight glass 204 and a manhole 206. The lower side of the evaporation chamber 2 is provided with a temperature sensor 16. The evaporation chamber outlet 202 and the evaporation chamber inlet 203 are connected to the heating chamber 1.

[0048] The heating chamber 1 also includes a liquid guide tube 14 and a density sensor 15. The upper portion of the heating chamber 1 has a liquid medicine outlet 101 connected to the shell side, the lower end of the heating chamber 1 has a liquid medicine inlet and outlet 102 connected to the shell side, the upper portion of the heating chamber 1 has a heating chamber steam inlet 106 connected to the tube side, the lower portion of the heating chamber 1 has a heating chamber steam outlet 108 connected to the tube side, the lower portion of the heating chamber 1 has a tube side drain valve 105 connected to the tube side, the liquid medicine outlet 101 is connected to the evaporation chamber inlet 203, and the evaporation chamber outlet 202 is connected to the lower portion of the heating chamber 1 through the liquid guide tube 14. The liquid inlet and outlet 102 is connected to the feed port 103 and the discharge port 104. A density sensor 15 is provided in the middle of the horizontal tube of the liquid guide tube 14. The steam inlet 106 of the heating chamber is connected to the steam device. A steam pressure sensor 107 is provided at the steam outlet of the steam device. The outlet of the steam device is also connected to the jacket steam inlet 121, or the steam device, the heating chamber steam inlet 106, the pipe pass, the heating chamber steam outlet 108, and the jacket steam inlet 121 are connected in sequence. The outside of the heating chamber 1, the liquid guide tube 14, and the elbow 11 are all wrapped with an insulation layer;

[0049] The condenser 3 includes a primary condenser 4, a secondary condenser 5, a tertiary condenser 6, a liquid collector 7 and a water pump 8. The outlet of the vapor-liquid separator 9 is connected to the shell side inlet of the upper part of the primary condenser 4, the shell side outlet of the lower part of the primary condenser 4 is connected to the shell side inlet of the upper part of the secondary condenser 5 through the condenser connecting pipe 20, the shell side outlet of the lower part of the secondary condenser 5 is connected to the shell side inlet of the tertiary condenser 6, the shell side outlet of the tertiary condenser 6 is connected to the shell side inlet of the lower part of the secondary condenser 5, the tube side of the primary condenser 4 has a primary cooling water inlet 41 and a primary cooling water outlet 42 for connecting to the pump and the water tank, the tube side of the secondary condenser 5 has a and the secondary cooling water inlet 51 and the secondary cooling water outlet 52 of the water tank, the pipe side of the tertiary condenser 6 has a tertiary cooling water inlet 61 and a tertiary cooling water outlet 62 for connecting the pump and the water tank, the condensed water outlets at the bottom ends of the primary condenser 4 and the secondary condenser 5 are both connected to the liquid collector 7, the front side of the liquid collector 7 is provided with a liquid collector sight glass 73, the rear side of the liquid collector 7 is provided with a liquid collector sight glass 74, the upper and lower sides of the liquid collector 7 are provided with an upper liquid level gauge 71 and a lower liquid level gauge 72, the lower end of the liquid collector 7 is provided with a drainage pipe, the drainage pipe is connected to the inlet of the water pump 8, the outlet of the water pump 8 is provided with a one-way valve 9, and the side of the secondary condenser 5 is provided with a vacuum tube 21;

[0050] The raw material tank 22 also includes a raw material tank 22, the upper opening of which is connected to a dosing tank pipeline 221 and a cleaning water tank pipeline 222, and the lower opening of the raw material tank 22 is connected to a discharge pipeline 223 and a delivery pipeline 224, and the delivery pipeline 224 is connected to the feed port 103;

[0051] The vacuum concentration process is complex, and the temperature control of the concentration equipment is a key point in the entire process. The temperature of the concentration equipment is affected by the combined influence of the steam system, vacuum system, and cooling water system (each system is a time-varying system), and the control requires precision. Different process nodes have different temperature control requirements and control algorithms. Temperature control itself has large time lag and nonlinear characteristics. Therefore, the currently widely used artificial intelligence technology is combined to improve the control quality of traditional Chinese medicine extraction production.

[0052] The concentration process is complex, and the process parameters and control parameters are different for different product varieties. The process includes: establishing vacuum, feeding the concentrator, concentrating the concentrator, defoaming the process, condensation discharge, etc.

[0053] The control system adopts a master-slave distributed control method, with the server as the intelligent layer and the main control cabinet and sub-control cabinet as the control layer, to achieve multi-layer processing of control tasks;

[0054] The DCS uses a Siemens 410 series controller, model 410-5H, with a 4MB program memory card. The hardware platform uses a Dell commercial computer for the human-machine interface, running Windows 10. The data server uses a Dell T440 tower server. The software platform uses the Siemens PCS79.0 industrial control software package.

[0055] By analyzing the process characteristics of the actual operation of the concentration equipment and based on artificial intelligence theory, we proposed the following intelligent control objectives for the process: efficient and stable control of equipment temperature (converted to constant vacuum pressure), intelligent planning of vacuum pump groups and cooling water pump groups, elimination of common system interference, and ensuring that the actual control results meet the process control requirements.

[0056] Intelligence is stimulated and grown by objective information under the constraints of subject purpose and knowledge. It is an advanced product of the information ecological evolution process. By utilizing the current rapidly developing software and hardware platforms, this paper establishes an intelligent control model for vacuum concentration system. Figure 7 shown.

[0057] Knowledge is the basis for converting information into strategy. Each type of knowledge in the system drives its own functional module. Common sense knowledge drives the perception information module (sensor data selection and generation) and the basic module (manual control); experiential knowledge drives the intelligent module (prediction); and normative knowledge drives the comprehensive decision-making module (automatic control). At the same time, each type of knowledge realizes an internal knowledge ecological cycle during the operation of the system.

[0058] Information conversion is the source of the laws of intelligent creation. Information in the system is processed and converted in various modules. The perception information module converts sensor signals into grammatical information (system engineering quantity data), and the information conversion module converts grammatical information into full information (data status, changes, and other characteristic quantities). The basic module, intelligent module, and decision-making module convert grammatical information and full information into control strategies at different levels of intelligence. At the same time, the information conversion process facilitates knowledge discovery and growth.

[0059] Software and hardware platform implementation: The software and hardware platforms are the implementation forms of the system's intelligent control. The system is divided into four levels of software and hardware platforms, including the equipment environment layer (sensors and actuators), the control layer (controllers and electrical circuits), the intelligent layer (computers and computing software), and the database (data storage memory hard disk and software);

[0060] The method comprises the following steps:

[0061] Step 1: A vacuum pump is used to maintain a negative pressure in the heating chamber 1, the evaporation chamber 2, the condenser 3, and the vapor-liquid separator 9. The raw material tank 22 delivers the liquid medicine thinner to the shell side of the heating chamber 1 through the feed inlet 103. The thinner liquid level in the heating chamber 1 is above the lower edge of the liquid medicine outlet 101 but does not exceed the upper edge of the liquid medicine outlet 101. Steam is input into the tube side of the heating chamber 1 through the steam inlet 106 of the heating chamber to heat the liquid medicine.

[0062] Step 2: The vacuum pump creates a temperature difference, and the liquid and steam enter the evaporation chamber 2 through the liquid outlet 101, and then flow back to the shell side of the heating chamber 1 through the evaporation chamber outlet 202 and the liquid guide pipe 14; the steam enters the vapor-liquid separator 9 through the steam outlet 201 and the elbow 11;

[0063] In step 2, the steam from the tube side of the heating chamber 1 enters the gap through the jacket steam inlet 121, heating the evaporation chamber 2 and the air guide pipe 13. Compared with the traditional insulation layer, this not only improves the steam utilization efficiency, but also improves the evaporation efficiency.

[0064] Step 3: The steam is separated at the vapor-liquid separator 9. The condensate containing the drug or other components at the vapor-liquid separator 9 flows into the heating chamber 1 through the conduit 10 for collection, and the solvent vapor enters the condenser 3. The high and low arrangement and the arrangement of the conduits not only greatly recover the condensate containing the drug components, but also effectively prevent it from entering the condenser 3, thereby improving the collected purity of the solvent and reducing the loss of drug components.

[0065] Step 4: The steam is condensed in the condenser 3, and the condensed solvent is finally recovered through the liquid collector 7; after the first and second condensations in the primary condenser 4 and the secondary condenser 5, the steam temperature is still around 80°C. Due to the different boiling points of the solvents, such as the lower boiling point of alcohol, chilled water at 2-7°C is introduced into the tertiary condenser 6 for condensation to improve the recovery efficiency;

[0066] Step 5: When the liquid collector 7 reaches the highest level, the water pump 8 is started to discharge the collected solvent. After the density sensor 15 detects that the concentration of the liquid meets the concentration requirement, the feed port 103 remains closed, the cover on the top of the heating chamber 1 is opened, and the concentrated liquid is discharged through the discharge port 104;

[0067] Step 6: Close the feed port 103, the discharge port 104, and the cover on the top of the heating chamber 1, turn on the rotary nozzle and the vacuum pump, and clean the entire machine in the order of steps 1-4. Finally, open the feed port 103, the discharge port 104, the heating chamber 1, and the water pump 8 to drain the liquid.

[0068] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be permuted and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutations and combinations. Therefore, the present invention will no longer describe the technical solutions after permutations and combinations one by one, but it should be understood that the technical solutions after permutations and combinations have been disclosed by the present invention.

[0069] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A vacuum concentration system based on artificial intelligence, comprising a heating chamber (1), an evaporation chamber (2) and a condenser (3), wherein the heating chamber (1), the evaporation chamber (2) and the condenser (3) are connected in sequence, characterized in that: It also comprises a vapor-liquid separator (9), the evaporation chamber (2) is connected to the condenser (3) via the vapor-liquid separator (9), and the vapor-liquid separator (9) is located above the evaporation chamber (2).

2. The vacuum concentration system based on artificial intelligence according to claim 1, characterized in that: It also comprises a bent pipe (11), the upper end of the evaporation chamber (2) is provided with a steam outlet (201), the vapor-liquid separator (9) is located above the steam outlet (201), the inlet of the vapor-liquid separator (9) is connected to the steam outlet (201) through the bent pipe (11), and the outlet of the vapor-liquid separator (9) is connected to the condenser (3).

3. The vacuum concentration system based on artificial intelligence according to claim 2, characterized in that: The invention also comprises a conduit (10), which is an L-shaped pipe, comprising a transverse pipe, an arc-shaped pipe and a longitudinal pipe, wherein the transverse pipe, the arc-shaped pipe and the longitudinal pipe are connected in sequence, the arc-shaped pipe is a semicircular curved pipe, the longitudinal pipe of the conduit (10) is connected to the lower end of the vapor-liquid separator (9), and the transverse pipe of the conduit (10) extends into the evaporation chamber (2).

4. The vacuum concentration system based on artificial intelligence according to claim 3, characterized in that: The invention also comprises a jacket (12) and an air guide pipe (13); the outer side of the evaporation chamber (2) is wrapped with the jacket (12); the jacket (12) has a jacket steam inlet (121) and a jacket steam outlet (122); a gap is provided between the jacket (12) and the outer side of the evaporation chamber (2); the jacket steam inlet (121) and the jacket steam outlet (122) are both connected to the gap; one end of the air guide pipe (13) is connected to an air hole on the upper side of the evaporation chamber (2); the other end of the air guide pipe (13) passes through the gap and extends out; a pressure sensor (19) is provided on the air guide pipe (13).

5. The vacuum concentration system based on artificial intelligence according to claim 4, characterized in that: The invention also comprises a temperature sensor (16), a chain electrode (17) and a fixing ring (18); the fixing ring (18) is arranged at the lower part of the evaporation chamber (2); the chain electrode (17) is inserted into the interior of the evaporation chamber (2) from the through hole at the upper end of the evaporation chamber (2) and connected to the fixing ring (18); the upper end of the evaporation chamber (2) has a cleaning hole (205) for installing a rotating nozzle; the upper end of the evaporation chamber (2) is equipped with a light sight glass (207); the lower end of the evaporation chamber (2) has an evaporation chamber outlet (202); the side of the evaporation chamber (2) has an evaporation chamber inlet (203); the side of the evaporation chamber (2) has a sight glass (204) and a manhole (206); the lower side of the evaporation chamber (2) is equipped with a temperature sensor (16); the evaporation chamber outlet (202) and the evaporation chamber inlet (203) are connected to the heating chamber (1).

6. The vacuum concentration system based on artificial intelligence according to claim 5, characterized in that: The device also comprises a liquid guide tube (14) and a density sensor (15); the upper part of the heating chamber (1) has a liquid medicine outlet (101) connected to the shell side; the lower end of the heating chamber (1) has a liquid medicine inlet and outlet (102) connected to the shell side; the upper part of the heating chamber (1) has a heating chamber steam inlet (106) connected to the tube side; the lower part of the heating chamber (1) has a heating chamber steam outlet (108) connected to the tube side; the lower part of the heating chamber (1) has a tube side drain valve (105) connected to the tube side; the liquid medicine outlet (101) is connected to the evaporation chamber inlet (203); the evaporation chamber outlet (202) is connected to the lower part of the heating chamber (1) through the liquid guide tube (14). The liquid inlet and outlet (102) are connected with the feed inlet (103) and the discharge outlet (104); a density sensor (15) is arranged in the middle of the horizontal tube of the liquid guide tube (14); the steam inlet (106) of the heating chamber is connected with the steam device; a steam pressure sensor (107) is arranged at the steam outlet of the steam device; the outlet of the steam device is also connected with the steam inlet (121) of the jacket; or the steam device, the steam inlet (106) of the heating chamber, the pipe path, the steam outlet (108) of the heating chamber, and the steam inlet (121) of the jacket are connected in sequence; and the outer sides of the heating chamber (1), the liquid guide tube (14), and the bent pipe (11) are all wrapped with a thermal insulation layer.

7. The artificial intelligence-based vacuum concentration system according to claim 2 or 6, characterized in that: The condenser (3) comprises a primary condenser (4), a secondary condenser (5), a tertiary condenser (6), a liquid collector (7) and a water pump (8); the outlet of the vapor-liquid separator (9) is connected to the shell side inlet at the top of the primary condenser (4); the shell side outlet at the bottom of the primary condenser (4) is connected to the shell side inlet at the top of the secondary condenser (5) through a condenser connecting pipe (20); the shell side outlet at the bottom of the secondary condenser (5) is connected to the shell side inlet of the tertiary condenser (6); the shell side outlet of the tertiary condenser (6) is connected to the shell side inlet at the bottom of the secondary condenser (5); the tube side of the primary condenser (4) has a primary cooling water inlet (41) and a primary cooling water outlet (42) for connecting a pump and a water tank; the tube side of the secondary condenser (5) has a primary cooling water inlet (41) and a primary cooling water outlet (42) for connecting a pump and a water tank; The first-stage condenser (4) and the second-stage condenser (5) are provided with a second-stage cooling water inlet (51) and a second-stage cooling water outlet (52) of the water tank, the pipe line of the third-stage condenser (6) is provided with a third-stage cooling water inlet (61) and a third-stage cooling water outlet (62) for connecting the pump and the water tank, the condensation water outlets at the bottom ends of the first-stage condenser (4) and the second-stage condenser (5) are connected to the liquid collector (7), the front side of the liquid collector (7) is provided with a liquid collector sight glass (73), the rear side of the liquid collector (7) is provided with a liquid collector sight glass (74), the upper and lower sides of the liquid collector (7) are provided with an upper liquid level gauge (71) and a lower liquid level gauge (72), the lower end of the liquid collector (7) is provided with a drainage pipe, the drainage pipe is connected to the inlet of the water pump (8), the outlet of the water pump (8) is provided with a one-way valve (9), and the side of the second-stage condenser (5) is provided with a vacuum tube (21).

8. The artificial intelligence-based vacuum concentration according to claim 7, characterized in that: It also includes a raw material tank (22), wherein the upper opening of the raw material tank (22) is connected to a dosing tank pipeline (221) and a cleaning water tank pipeline (222), and the lower opening of the raw material tank (22) is connected to a discharge pipeline (223) and a delivery pipeline (224), and the delivery pipeline (224) is connected to the feed port (103).

9. A vacuum concentration method based on artificial intelligence, characterized in that: The artificial intelligence-based vacuum concentration system of claim 8 comprises the following steps: Step 1: The heating chamber (1), the evaporation chamber (2), the condenser (3), and the vapor-liquid separator (9) are kept in a negative pressure state by a vacuum pump, the raw material tank (22) delivers the drug liquid to the shell side of the heating chamber (1) through the feed port (103), and steam is input into the tube side of the heating chamber (1) through the steam inlet (106) of the heating chamber to heat the drug liquid; Step 2: The liquid medicine enters the evaporation chamber (2) through the liquid medicine outlet (101), and then flows back to the shell side of the heating chamber (1) through the evaporation chamber outlet (202) and the liquid guide pipe (14); the steam enters the vapor-liquid separator (9) through the steam outlet (201) and the elbow (11); Step 3: The steam is separated at the steam-liquid separator (9), the condensate at the steam-liquid separator (9) flows into the heating chamber (1) through the conduit (10), and the steam enters the condenser (3); Step 4: The steam is condensed in the condenser (3), and the condensed solvent is finally recovered through the liquid collector (7).

10. The vacuum concentration method based on artificial intelligence according to claim 9, characterized in that: In step 2, the tube-side steam of the heating chamber (1) enters into the gap through the jacket steam inlet (121) to heat the evaporation chamber (2) and the air guide pipe (13).

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