CN215136936U - MVR evaporation equipment applied to alcohol extraction of traditional Chinese medicine liquid - Google Patents
MVR evaporation equipment applied to alcohol extraction of traditional Chinese medicine liquid Download PDFInfo
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- CN215136936U CN215136936U CN202120072309.7U CN202120072309U CN215136936U CN 215136936 U CN215136936 U CN 215136936U CN 202120072309 U CN202120072309 U CN 202120072309U CN 215136936 U CN215136936 U CN 215136936U
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Abstract
The application discloses be applied to MVR evaporation equipment of liquid medicine in alcohol extraction. The method comprises the following steps: the system comprises a feeding pump, a primary preheater, a secondary preheater, a cooling assembly and an evaporation assembly which are connected through pipelines; the alcohol extraction and water evaporation device utilizes a feeding pump, a primary preheater, a secondary preheater, a cooling assembly and an evaporation assembly which are connected through pipelines, and adopts an MVR evaporation concentration technology to carry out evaporation concentration on alcohol extraction or alcohol water mixed materials; the alcohol extraction or alcohol-water mixed material is conveyed to a first-stage preheater and a second-stage preheater by a feed pump for preheating until the material is preheated to an evaporation temperature, and the ethanol in the material is cooled by a cooling assembly, so that the ethanol solvent is completely cooled down, and the recovery rate of the ethanol is improved; and then the materials reaching the evaporation temperature are transmitted to the evaporation assembly for evaporation concentration, compared with the traditional evaporation process, the evaporation process does not need additional raw steam assistance, and the latent heat of secondary steam generated in the evaporation process can be effectively utilized, so that the aim of saving energy is fulfilled.
Description
Technical Field
The disclosure generally relates to the technical field of MVR alcohol extraction traditional Chinese medicine liquid evaporation concentration systems, and particularly relates to MVR evaporation equipment applied to alcohol extraction traditional Chinese medicine liquid.
Background
The MVR evaporation concentration technology is widely applied to the traditional Chinese medicine, food and beverage industries of hydrosolvent, particularly the traditional Chinese medicine industry, and the traditional Chinese medicine industry aims at the concentration of traditional Chinese medicine extract, is one of the important processes of traditional Chinese medicine pharmacy, is the operation with the most energy consumption of the traditional Chinese medicine pharmacy, and is also an important component part of the modernization of the traditional Chinese medicine pharmacy. The recovery of the ethanol traditional Chinese medicine extraction solvent is a great problem due to the unique safety problem, and the MVR evaporation and concentration system commonly used for the water solvent is not suitable any more. In addition, the solvent of the traditional Chinese medicine extracting solution is not a pure ethanol solvent or a pure water solvent, so that the traditional MVR concentration mode has the problems of higher concentration temperature, long concentration retention time, high energy consumption, easy loss of effective components and volatile components, low ethanol recovery rate, easy scaling of equipment and the like. Therefore, the defects of low evaporation efficiency, small production capacity and high labor intensity are caused in the production process, and the modern production requirement cannot be met.
Therefore, the MVR evaporation equipment applied to the alcohol extraction of the traditional Chinese medicine liquid is provided for solving the problems of MVR evaporation and concentration of the traditional Chinese medicine liquid of which the traditional Chinese medicine solvent is not a pure alcohol solvent or a pure water solvent and the recovery rate and energy consumption in the production process.
Disclosure of Invention
In view of the above defects or shortcomings in the prior art, it is desirable to provide an MVR evaporation device applied to the alcohol extraction traditional Chinese medicine liquid, which effectively improves the energy utilization rate and the recovery rate of the ethanol solvent, increases the production capacity, ensures the production purity, is simple and convenient to operate, and is easy to implement.
In a first aspect, the present application provides an MVR evaporation equipment applied to alcohol extraction of a Chinese medicinal liquid, including: the system comprises a feeding pump, a primary preheater, a secondary preheater, a cooling assembly and an evaporation assembly which are connected through pipelines;
the feeding pump is communicated with the primary preheater, and the primary preheater is communicated with the secondary preheater; the secondary preheater is connected with a raw steam main pipe and a blowdown main pipe;
the cooling assembly includes: a condensate pump and a condensate cooler connected with the primary preheater; the condensed water cooler is connected with a chilled water main pipe and an ethanol collecting tank;
the evaporation assembly comprises: the evaporator, the separator and the compressor are connected through pipelines; the top of the evaporator is communicated with the secondary preheater; the bottom of the evaporator is connected with a discharge pump, and a circulating pump is arranged between the top of the evaporator and the discharge pump; the shell pass of the evaporator is connected with a condensed water tank which is communicated with the condensed water pump; the compressor is connected with a steam seal tank, and the steam seal tank is connected with a raw steam main pipe and a sewage pipeline.
According to the technical scheme provided by the embodiment of the application, the method further comprises the following steps: a vacuum system for creating a vacuum environment.
According to the technical scheme provided by the embodiment of the application, the vacuum system comprises: a gas-liquid separation tank communicated with the condensed water tank and a vacuum pump communicated with the gas-liquid separation tank; the vacuum pump is connected with a water replenishing tank and is communicated with the ethanol collecting tank; the water supplementing tank is connected with an ethanol delivery pump, and the ethanol delivery pump is connected with a vacuum pump cooler; the vacuum pump cooler is communicated with the ethanol collecting tank and is connected with a chilled water main pipe; the water replenishing tank is also connected with a purified water main pipe.
According to the technical scheme that this application embodiment provided, the knockout drum be connected with the noncondensable gas cooler of the top intercommunication of evaporimeter, and it with the mother pipe intercommunication of refrigerated water.
According to the technical scheme provided by the embodiment of the application, the first-stage preheater and the second-stage preheater are both plate heat exchangers.
According to the technical scheme provided by the embodiment of the application, the evaporator is a falling film evaporator or a rising film evaporator.
In conclusion, the technical scheme specifically discloses a specific structure of MVR evaporation equipment applied to alcohol extraction of the Chinese medicinal liquid. The method specifically comprises the steps that a feeding pump, a first-stage preheater, a second-stage preheater, a cooling assembly and an evaporation assembly which are connected through pipelines are utilized, and an MVR evaporation concentration technology is adopted to carry out evaporation concentration on alcohol extraction or alcohol-water mixed materials; the alcohol extraction or alcohol-water mixed material is conveyed to a first-stage preheater and a second-stage preheater by a feed pump for preheating until the material is preheated to an evaporation temperature, and the ethanol in the material is cooled by a cooling assembly, so that the ethanol solvent is completely cooled down, and the recovery rate of the ethanol is improved; the materials reaching the evaporation temperature are transmitted to the evaporation assembly for evaporation concentration, compared with the traditional evaporation process, the evaporation process does not need additional raw steam for assistance, and the latent heat of secondary steam generated in the evaporation process can be effectively utilized, so that the aim of saving energy is fulfilled;
the method comprises the steps of conveying an alcohol extraction or alcohol-water mixed material to a primary preheater by using a feed pump, heating the material, conveying the heated material to a secondary preheater until the material is preheated to an evaporation temperature, conveying the material to an evaporator, enabling the material to enter a lower pipe box for evaporation through a liquid distribution disc of the evaporator in a film-shaped flow along the pipe wall, enabling evaporated gas to enter a separator for separation, enabling secondary steam entering the separator to be heated and compressed by using a compressor, and enabling the heated and compressed secondary steam to serve as a heat source to continue to heat the evaporator; the cooled liquid continuously enters the evaporator through the circulating pump and a circulating pipeline connected with the circulating pump for evaporation, and when the concentration required by a customer is reached, the liquid is controlled to be discharged through the discharging pump; the non-condensable gas is pumped out from the shell pass of the evaporator, and is cooled by heat exchange with circulating water through a non-condensable gas cooler, and the steam is ensured to be completely condensed after being cooled by the chilled water; furthermore, condensed water generated in the evaporation process of the system is discharged through the primary preheater, and the owner can collect the part of the condensed water for recycling; when alcohol extraction liquid medicine is evaporated, condensed water generated in the evaporation process passes through the primary preheater and then enters the condensed water cooler again to ensure the water outlet temperature, and the recovery rate of the partial alcohol condensate can reach at least 98%.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of an MVR evaporation device applied to alcohol extraction of a Chinese medicinal liquid.
Reference numbers in the figures: 1. a feed pump; 2. a primary preheater; 3. a secondary preheater; 6. a condensate pump; 7. a condensed water cooler; 9. an ethanol collection tank; 10. an evaporator; 11. a separator; 12. a compressor; 13. a discharge pump; 14. a circulation pump; 15. a condensate tank; 16. a steam seal tank; 18. a gas-liquid separation tank; 19. a vacuum pump; 20. a water replenishing tank; 21. an ethanol delivery pump; 22. a vacuum pump cooler; 25. a non-condensable gas cooler.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
Please refer to fig. 1, which is a schematic structural diagram of an MVR evaporation apparatus applied to alcohol extraction of a liquid medicine provided in the present application, including: the system comprises a feeding pump 1, a primary preheater 2, a secondary preheater 3, a cooling assembly and an evaporation assembly which are connected through pipelines;
the feed pump 1 is communicated with the primary preheater 2, and the primary preheater 2 is communicated with the secondary preheater 3; the secondary preheater 3 is connected with a raw steam main pipe and a blowdown main pipe;
the cooling assembly includes: a condensed water pump 6 and a condensed water cooler 7 which are connected with the primary preheater 2; the condensed water cooler 7 is connected with a chilled water main pipe and an ethanol collecting tank 9;
the evaporation assembly comprises: an evaporator 10, a separator 11 and a compressor 12 which are connected by pipelines; the top of the evaporator 10 is in communication with the secondary preheater 3; the bottom of the evaporator 10 is connected with a discharge pump 13, and a circulating pump 14 is arranged between the top of the evaporator 10 and the discharge pump 13; the shell pass of the evaporator 10 is connected with a condensed water tank 15 which is communicated with the condensed water pump 6; the compressor 12 is connected with a steam seal tank 16, and the steam seal tank 16 is connected with a raw steam main pipe and a sewage pipeline.
In the embodiment, a feeding pump 1, a primary preheater 2, a secondary preheater 3, a cooling assembly and an evaporation assembly which are connected through pipelines are designed, and an MVR evaporation concentration technology is adopted to carry out evaporation concentration on alcohol extraction or alcohol-water mixed materials; alcohol extraction or alcohol-water mixture materials are conveyed to a first-stage preheater 2 and a second-stage preheater 3 by a feed pump to be preheated until the materials are preheated to an evaporation temperature, and the ethanol in the materials is cooled by a cooling assembly to ensure that an ethanol solvent is completely cooled down and improve the recovery rate of the ethanol; the materials reaching the evaporation temperature are transmitted to the evaporation assembly for evaporation concentration, compared with the traditional evaporation process, the evaporation process does not need additional raw steam for assistance, and the latent heat of secondary steam generated in the evaporation process can be effectively utilized, so that the aim of saving energy is fulfilled;
a feed inlet of the feed pump 1 is communicated with a feed pipeline, and a discharge outlet of the feed pump is connected to the primary preheater 2 through a pipeline and used for conveying alcohol extraction or alcohol-water mixed materials;
the primary preheater 2 is communicated with the secondary preheater 3, and the primary preheater and the secondary preheater preheat the alcohol extraction or alcohol-water mixed material conveyed by the feed pump 1 until the temperature reaches the evaporation temperature; here, the primary preheater 2 and the secondary preheater 3 are both plate heat exchangers;
the raw steam main pipe and the blowdown main pipe are respectively connected with the secondary preheater 3, and a high-temperature raw steam heat source is introduced into the secondary preheater 3 by using the raw steam main pipe, so that the secondary preheater 3 can preheat the material to the evaporation temperature; the sewage main pipe can discharge condensed water generated by steam-water heat exchange and condensation in the secondary preheater 3;
the condensate pump 6 is connected with the primary preheater 2 and is used for conveying condensate water in the condensate water tank 15 to the primary preheater 2 and conveying the condensate water to the condensate water cooler 7 through the primary preheater 2, so that the condensate water is cooled to a temperature below 35 ℃ and then discharged, and the volatilization of ethanol is effectively avoided;
the condensed water cooler 7 is connected with the primary preheater 2 and is used for completely cooling the ethanol in the condensed water;
the chilled water main pipe and the ethanol collecting tank 9 are respectively connected with the condensed water cooler 7, and the chilled water main pipe is used for receiving condensed water so that the condensed water can be recycled; the ethanol collecting tank 9 is used for collecting and recovering ethanol;
the top of the evaporator 10 is communicated with the secondary preheater 3 and is used for evaporating the material preheated to the evaporation temperature; the evaporator 10 is, for example, of the falling-film evaporator or rising-film evaporator type;
the discharge pump 13 is connected to the bottom of the evaporator 10 and used for guiding out the evaporated and concentrated material after the material reaches the discharge density; here, whether the discharging meets the discharging requirement can be measured by using a mass flowmeter;
the circulating pump 14 is arranged between the top of the evaporator 10 and the discharge pump 13 and is used for conveying the cooled liquid into the evaporator 10 so as to continuously evaporate in the evaporator 10;
a condensed water tank 15 connected to the shell side of the evaporator 10, and communicated with the condensed water pump 6, for balancing atmospheric pressure;
a separator 11 connected to the evaporator 10 for separating the gas evaporated by the evaporator 10;
the compressor 12 is connected with the separator 11 and is used for heating and compressing the secondary steam entering the separator 11, so that the heated and compressed secondary steam can be used as a heat source to continue to heat the evaporator 10;
the steam seal tank 16 is connected with the compressor 12 and communicated with a raw steam main pipe, raw steam is introduced into the seal steam tank 16 through the raw steam main pipe and then is transmitted to the compressor 12, and the compressor 12 is subjected to steam seal so as to ensure the good effect of temperature rise and compression; and, the steam seal tank 16 collects the steam condensate generated therein or discharges the steam condensate separately by using a sewage discharge pipeline communicated with the steam seal tank.
In any preferred embodiment, further comprising: a vacuum system for creating a vacuum environment.
In this embodiment, still design has the vacuum system, provides the negative pressure environment for whole equipment to guarantee that the system evaporates at low temperature, the material can not appear the heat sensitivity.
In any preferred embodiment, the vacuum system comprises: a gas-liquid separation tank 18 communicating with the condensed water tank 15 and a vacuum pump 19 communicating with the gas-liquid separation tank 18; the vacuum pump 19 is connected with a water replenishing tank 20 and is communicated with the ethanol collecting tank 9; the water replenishing tank 20 is connected with an ethanol delivery pump 21, and the ethanol delivery pump 21 is connected with a vacuum pump cooler 22; the vacuum pump cooler 22 is communicated with the ethanol collecting tank 9, and the vacuum pump cooler 22 is connected with a chilled water main pipe; the water replenishing tank 20 is also connected with a purified water main pipe.
In the present embodiment, a gas-liquid separation tank 18 that communicates with the condensed water tank 15 for gas-liquid separation;
a vacuum pump 19 communicated with the gas-liquid separation tank 18 for providing a negative pressure environment; here, the type of the vacuum pump 19 is, for example, a water ring vacuum pump;
the water replenishing tank 20 is connected with the vacuum pump 19 and is connected with a purified water main pipe, purified water is introduced into the water replenishing tank 20 through the purified water main pipe, and the water replenishing tank 20 replenishes water for the vacuum pump 19;
the ethanol collecting tank 9 is connected with the water replenishing tank 20 and the vacuum pump cooler 22 and is used for collecting ethanol;
the ethanol delivery pump 21 is connected with the water replenishing tank 20 and is used for delivering ethanol to the vacuum pump cooler 22;
the vacuum pump cooler 22 is respectively connected with the ethanol delivery pump 21 and the ethanol collection tank 9, and is communicated with a chilled water main pipe, the chilled water main pipe is used for providing cooling water for the vacuum pump cooler 22, and the ethanol is cooled by the vacuum pump cooler 22 and then delivered to the ethanol collection tank 9.
In any preferred embodiment, the gas-liquid separation tank 18 is connected with a non-condensable gas cooler 25 communicated with the top of the evaporator 10, and is communicated with the chilled water header pipe.
In this embodiment, the noncondensable gas cooler 25, with the top of evaporator 10 and gas-liquid separation jar 18 communicates respectively, and it utilizes the chilled water mother pipe to provide the refrigerated water for it to the heat transfer cooling is to the noncondensable gas in evaporator 10 and the gas-liquid separation jar 18, after the refrigerated water cooling, ensures that steam is by the complete condensation.
The connecting interfaces of all devices, parts and pipelines in the equipment are bolted by high-strength hoops, and the used instruments and meters adopt the standards above explosion-proof EXd II BT4, so that the ethanol cannot be leaked, and the safety of workshop personnel is ensured;
in addition, a Siemens S7-1500 series PLC is selected as a controller of the field control station of the device, the upper computer is placed in the centralized control of the process, the control cabinet and the upper computer are communicated through the industrial Ethernet, all basic experiments are automatically operated and generated, an operator can operate the system only by using a mouse, and the labor amount and labor cost of workers are effectively reduced.
The specific working process is as follows:
taking a falling-film evaporator as an example,
the feeding pump 1 conveys an alcohol extraction or alcohol-water mixed material to the first-stage preheater 2, the material is heated, then the heated material is conveyed to the second-stage preheater 3 until the material is preheated to an evaporation temperature, then the material is conveyed to the falling-film evaporator, the material enters the lower pipe box for evaporation through the liquid distribution disc flowing along the pipe wall in a film shape, the evaporated gas enters the separator 11 for separation, the secondary steam entering the separator 11 is heated and compressed by the compressor 12, and the heated and compressed secondary steam can be used as a heat source to continue to heat the falling-film evaporator; the cooled liquid continuously enters the falling film evaporator for evaporation through the circulating pump 14 and a circulating pipeline connected with the circulating pump, and when the concentration required by a customer is reached, the liquid is controlled to be discharged through the discharging pump 13;
non-condensable gas is pumped out by the shell pass of the falling film evaporator, and is cooled by heat exchange with circulating water through a non-condensable gas cooler 25, and the steam is ensured to be completely condensed after being cooled by freezing water;
after the condensed water generated in the evaporation process passes through the primary preheater 2 and is discharged out of the system, the owner can collect the condensed water and recycle the condensed water; when alcohol extraction liquid medicine is evaporated, condensed water generated in the evaporation process passes through the primary preheater 2 and then enters the condensed water cooler 7 again, so that the water outlet temperature can be ensured, and the recovery rate of the partial ethanol condensate can reach at least 98%.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (6)
1. The utility model provides a be applied to MVR evaporation of liquid medicine in alcohol extraction and equip, its characterized in that includes: the system comprises a feeding pump (1), a primary preheater (2), a secondary preheater (3), a cooling assembly and an evaporation assembly which are connected through pipelines;
the feed pump (1) is communicated with the primary preheater (2), and the primary preheater (2) is communicated with the secondary preheater (3); the secondary preheater (3) is connected with a raw steam main pipe and a blowdown main pipe;
the cooling assembly includes: a condensate pump (6) and a condensate cooler (7) which are connected with the primary preheater (2); the condensed water cooler (7) is connected with a chilled water main pipe and an ethanol collecting tank (9);
the evaporation assembly comprises: the evaporator (10), the separator (11) and the compressor (12) are connected through pipelines; the top of the evaporator (10) is communicated with the secondary preheater (3); the bottom of the evaporator (10) is connected with a discharge pump (13), and a circulating pump (14) is arranged between the top of the evaporator (10) and the discharge pump (13); the shell pass of the evaporator (10) is connected with a condensed water tank (15) which is communicated with the condensed water pump (6); the compressor (12) is connected with a steam seal tank (16), and the steam seal tank (16) is connected with a raw steam main pipe and a sewage pipeline.
2. The MVR evaporation equipment applied to the alcohol extraction of the traditional Chinese medicine liquid is characterized by further comprising: a vacuum system for creating a vacuum environment.
3. The MVR evaporation equipment applied to alcohol extraction of the medicinal liquid according to claim 2, wherein the vacuum system comprises: a gas-liquid separation tank (18) communicated with the condensed water tank (15) and a vacuum pump (19) communicated with the gas-liquid separation tank (18); the vacuum pump (19) is connected with a water replenishing tank (20) and is communicated with the ethanol collecting tank (9); the water replenishing tank (20) is connected with an ethanol conveying pump (21), and the ethanol conveying pump (21) is connected with a vacuum pump cooler (22); the vacuum pump cooler (22) is communicated with the ethanol collecting tank (9), and the vacuum pump cooler (22) is connected with a chilled water main pipe; the water replenishing tank (20) is also connected with a purified water main pipe.
4. The MVR evaporation equipment applied to the alcohol extraction traditional Chinese medicine liquid is characterized in that the gas-liquid separation tank (18) is connected with a non-condensable gas cooler (25) communicated with the top of the evaporator (10) and communicated with the chilled water header pipe.
5. The MVR evaporation equipment applied to the alcohol extraction traditional Chinese medicine liquid is characterized in that the primary preheater (2) and the secondary preheater (3) are plate type heat exchangers.
6. The MVR evaporation equipment applied to the alcohol extraction traditional Chinese medicine liquid is characterized in that the evaporator (10) is a falling film evaporator or a climbing film evaporator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120072309.7U CN215136936U (en) | 2021-01-12 | 2021-01-12 | MVR evaporation equipment applied to alcohol extraction of traditional Chinese medicine liquid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120072309.7U CN215136936U (en) | 2021-01-12 | 2021-01-12 | MVR evaporation equipment applied to alcohol extraction of traditional Chinese medicine liquid |
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| CN215136936U true CN215136936U (en) | 2021-12-14 |
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| CN202120072309.7U Active CN215136936U (en) | 2021-01-12 | 2021-01-12 | MVR evaporation equipment applied to alcohol extraction of traditional Chinese medicine liquid |
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