CN219595888U - Device for recovering and extracting methanol from glufosinate mother solution - Google Patents
Device for recovering and extracting methanol from glufosinate mother solution Download PDFInfo
- Publication number
- CN219595888U CN219595888U CN202320139265.4U CN202320139265U CN219595888U CN 219595888 U CN219595888 U CN 219595888U CN 202320139265 U CN202320139265 U CN 202320139265U CN 219595888 U CN219595888 U CN 219595888U
- Authority
- CN
- China
- Prior art keywords
- layer
- heat
- methanol
- heat exchange
- distillation tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model provides a device for recovering and extracting methanol from glufosinate mother solution, which comprises: the evaporator, the distillation tower, the condenser, the reflux drum and the product storage tank which are communicated in sequence, the liquid outlet of the distillation tower is also communicated with the liquid inlet of the evaporator, and the outlet of the reflux drum is also communicated with the liquid return port of the distillation tower. The outer wall of distillation column is provided with heat preservation subassembly, and heat preservation subassembly includes heat transfer layer, heat preservation and the vacuum layer that from interior to exterior can dismantle the connection, and heat transfer layer, heat preservation and vacuum layer are the rectangular plate that can crooked. The heat exchange layer is connected with the outer wall of the distillation tower, a heat exchange cavity is formed between the outer wall of the distillation tower and the heat exchange layer, the heat insulation layer is connected with the outer wall of the heat exchange layer, a heat insulation cavity is formed between the outer wall of the heat exchange layer and the heat insulation layer, heat insulation materials are filled in the heat insulation cavity, and a vacuum cavity is formed between the vacuum layer and the heat insulation layer. The utility model greatly reduces the consumption of water vapor and improves the recovery efficiency of methanol.
Description
Technical Field
The utility model relates to the technical field of glufosinate production, in particular to a device for recovering and extracting methanol from glufosinate mother solution.
Background
Glufosinate has been widely used in recent years as a broad-spectrum contact-killing type biocidal herbicide. Belongs to glutamine synthetase inhibitors, can cause nitrogen metabolism disorder, excessive accumulation of ammonia and chloroplast disintegration in plants, and inhibit photosynthesis of the plants so as to cause death of the plants. The glufosinate in the soil is rapidly degraded by microorganisms, and finally carbon dioxide is released, so that the weeding composition has the remarkable characteristics of low environmental residue, high weeding activity, low phytotoxicity, low residue, wide weeding spectrum, high safety and the like.
In the glufosinate-ammonium synthesis process, the obtained glufosinate-ammonium stock solution contains not only glufosinate-ammonium but also salt (such as ammonium chloride, sodium chloride and the like), and pure glufosinate-ammonium is obtained, the salt in the glufosinate-ammonium stock solution is firstly removed in the traditional process, and then the aim of purifying the glufosinate-ammonium is achieved by adding methanol into the glufosinate-ammonium stock solution for multiple crystallization by utilizing the principle that the solubility of the glufosinate-ammonium in water is large and the solubility of the glufosinate-ammonium in an organic solvent is small. However, this process uses a large amount of methanol solvent and the methanol contains a small amount of glufosinate, called glufosinate mother liquor, which requires recovery of the methanol.
In the prior art, the glufosinate mother solution is distilled, the methanol is gasified and then condensed, so that pure methanol is obtained, and the recovered methanol can be reused. However, in the current distillation process, the glufosinate-ammonium mother solution is heated by taking water vapor as a heat source, so that methanol in the glufosinate-ammonium mother solution is heated to be methanol vapor, and then the methanol vapor rises to the inside of the distillation tower for purification, but in the rising process of the methanol vapor, heat exchange is carried out with materials in the distillation tower, and heat exchange is carried out with the outside through the tower wall of the distillation tower, so that the heat loss of the methanol vapor is more due to the heat exchange. At the same time, the distillation process needs to ensure that the temperature of the tower top reaches a preset value, so that more water vapor needs to be provided to maintain the temperature of the tower top. This results in lower heat utilization of the water vapor, resulting in unnecessary waste.
Disclosure of Invention
The utility model provides a device for recovering and extracting methanol from glufosinate mother solution, which is used for solving the problems mentioned in the background art.
The utility model provides a device for recovering and extracting methanol from glufosinate mother solution, which comprises: the evaporator, the distillation tower, the condenser, the reflux drum and the product storage tank which are communicated in sequence, the liquid outlet of the distillation tower is also communicated with the liquid inlet of the evaporator, and the outlet of the reflux drum is also communicated with the liquid return port of the distillation tower.
The outer wall of distillation column is provided with heat preservation subassembly, and heat preservation subassembly includes heat transfer layer, heat preservation and the vacuum layer that from interior to exterior can dismantle the connection, and heat transfer layer, heat preservation and vacuum layer are the rectangular plate that can crooked.
The heat exchange layer is connected with the outer wall of the distillation tower, a heat exchange cavity is formed between the outer wall of the distillation tower and the heat exchange layer, the heat insulation layer is connected with the outer wall of the heat exchange layer, a heat insulation cavity is formed between the outer wall of the heat exchange layer and the heat insulation layer, heat insulation materials are filled in the heat insulation cavity, and a vacuum cavity is formed between the vacuum layer and the heat insulation layer.
Optionally, a heat exchange medium inlet is arranged below one end of the heat exchange layer, and a heat exchange medium outlet is arranged above the other end of the heat exchange layer.
Optionally, a plurality of grids are fixedly arranged in the heat preservation layer, and heat preservation materials are filled in the grids.
Optionally, the vacuum layer welds in the outer wall of heat preservation, and the vacuum layer is provided with the negative pressure mouth, and is provided with the vacuum table in the vacuum chamber.
Optionally, a tail gas outlet is formed in the top of the reflux tank, and the tail gas outlet is communicated with the air inlet of the condenser through a negative pressure fan.
Optionally, a pressure gauge is arranged at the top of the reflux tank, and the pressure gauge is connected with a negative pressure fan.
Optionally, a first automatic valve is arranged on a conveying pipeline of the reflux tank and the liquid return port of the distillation tower, and a second automatic valve is arranged on a conveying pipeline of the reflux tank and the product storage tank.
Optionally, a moisture meter is installed in the reflux tank, and the moisture meter is connected with the first automatic valve and the second automatic valve respectively.
The device for recovering and extracting the methanol from the glufosinate-ammonium mother solution provided by the utility model realizes the recovery of the methanol in the glufosinate-ammonium mother solution, and has the following beneficial effects compared with the prior art:
(1) Through setting up combined action on heat transfer layer, heat preservation and vacuum layer, play fine heat preservation effect to the temperature of distillation column, heat dissipation has significantly reduced for the in-process that methanol vapor risees reduces the methanol liquefaction whereabouts to the distillation column bottom that causes because of the heat transfer, has improved the distillation efficiency of methanol. Meanwhile, the heat utilization rate of the water vapor is greatly improved, the use of the water vapor is greatly reduced, the waste of the water vapor is avoided, and the recovery cost of the methanol is reduced.
(2) Through fixing a plurality of grids on the heat preservation, the heat preservation material sets up in the grid, sets up like this and makes in the use, avoids heat preservation material to warp, piles up, is favorable to heat preservation material to be in evenly distributed state in the heat preservation intracavity continuously, is favorable to improving the heat preservation effect. And the grid is arranged on the heat insulation layer, so that the heat insulation layer is convenient to detach, and an operator can conveniently select whether the heat insulation layer is needed according to actual working conditions.
(3) The negative pressure fan is electrically connected with the negative pressure fan through the pressure gauge, so that the negative pressure fan conveys the uncondensed methanol gas into the condenser again for condensation, the escape of the methanol gas is reduced, and the recovery efficiency of the methanol is improved. Meanwhile, the use of a condenser is reduced, and the cold energy consumption is reduced.
(4) The device has the advantages of simple structure and convenient operation, improves the recovery efficiency of the methanol, greatly reduces the consumption of water vapor and reduces the recovery cost of the methanol.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an apparatus for recovering methanol from a glufosinate mother solution according to an embodiment of the present utility model;
FIG. 2 is a schematic longitudinal cross-sectional view of a thermal insulation assembly according to an embodiment of the present utility model;
FIG. 3 is a schematic structural diagram of a thermal insulation assembly according to another embodiment of the present utility model;
fig. 4 is a schematic structural diagram of an apparatus for recovering methanol from a glufosinate mother solution according to another embodiment of the present utility model;
reference numerals illustrate:
1: an evaporator; 2: a distillation column; 201: a heat exchange layer; 2101: a heat exchange medium inlet; 2102: a heat exchange medium outlet; 202: a heat preservation layer; 203: a vacuum layer; 204: a negative pressure port; 210: a heat exchange cavity; 220: a heat preservation cavity; 2201: a grid; 230: a vacuum chamber; 240: a vacuum gauge; 3: a condenser; 4: a reflux drum; 410: a tail gas outlet; 420: a pressure gauge; 430: a moisture meter; 440: a first automatic valve; 450: a second automatic valve; 5: a product storage tank; 6: negative pressure fan.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions in the embodiments of the present utility model will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are also within the scope of the utility model.
Fig. 1 is a schematic structural diagram of a device for recovering and extracting methanol from a glufosinate mother solution according to an embodiment of the present utility model, and fig. 2 is a schematic longitudinal sectional diagram of a heat insulation assembly according to an embodiment of the present utility model, as shown in fig. 1 and fig. 2, a device for recovering and extracting methanol from a glufosinate mother solution, including: the device comprises an evaporator 1, a distillation tower 2, a condenser 3, a reflux tank 4 and a product storage tank 5 which are sequentially communicated, wherein a liquid outlet of the distillation tower 2 is also communicated with a liquid inlet of the evaporator 1, and an outlet of the reflux tank 4 is also communicated with a liquid return outlet of the distillation tower 2;
the outer wall of distillation tower 2 is provided with heat preservation subassembly, and heat preservation subassembly includes heat transfer layer 201, heat preservation 202 and vacuum layer 203 that from interior to exterior can dismantle the connection, and heat transfer layer 201, heat preservation 202 and vacuum layer 203 are the rectangular plate that can crooked.
The heat exchange layer 201 is connected with the outer wall of the distillation tower 2, a heat exchange cavity 210 is formed between the outer wall of the distillation tower 2 and the heat exchange layer 201, the heat insulation layer 202 is connected with the outer wall of the heat exchange layer 201, a heat insulation cavity 220 is formed between the outer wall of the heat exchange layer 201 and the heat insulation layer 202, heat insulation materials are filled in the heat insulation cavity 220, and a vacuum cavity 230 is formed between the vacuum layer 203 and the heat insulation layer 202.
Specifically, in the glufosinate-ammonium synthesis process, methanol is added into the glufosinate-ammonium stock solution to crystallize the glufosinate-ammonium for multiple times, so that the aim of purifying the glufosinate-ammonium is fulfilled. However, the method uses a large amount of methanol solvent, and after the glufosinate is purified, a small amount of glufosinate is contained in the methanol, namely, the glufosinate mother solution, if the glufosinate mother solution is directly discharged as sewage, a large amount of methanol is lost, and meanwhile, the treatment load of a sewage treatment station is increased.
The glufosinate-ammonium mother solution is conveyed into an evaporator 1, steam is introduced into the evaporator 1 as a heat source, the glufosinate-ammonium mother solution is heated, and because the boiling point of methanol is greatly lower than that of glufosinate-ammonium, the methanol in the glufosinate-ammonium mother solution is heated to be methanol steam, the methanol steam is conveyed into the distillation tower 2 from a steam inlet of the distillation tower 2 through a methanol steam conveying pipeline, the methanol steam continuously rises in the distillation tower 2 and exchanges heat with a filler in the distillation tower 2, so that a small amount of high-boiling-point components entrained in the methanol steam are liquefied, pass through the layer-by-layer filler under the action of gravity, and then fall to the bottom of the distillation tower 2. The purer methanol vapor is obtained at the top of the distillation tower 2, and is conveyed to the condenser 3 for condensation through the gas phase outlet at the top of the distillation tower 2, the obtained methanol liquid is conveyed to the reflux tank 4, and the amount of the water vapor entering the evaporator 1 is controlled so that the temperature of the top of the distillation tower 2 is 60-63 ℃ and the temperature of the tower bottom is 100-105 ℃. And (3) conveying part of the methanol liquid in the reflux tank 4 back to the distillation tower 2 through a liquid return port of the distillation tower 2 for redistillation, and conveying the rest part of the methanol liquid to a product storage tank 5 for storage. Along with the operation of the distillation device, when methanol liquid flows back, the methanol vapor which continuously rises in the distillation tower 2 and the reflux liquid on the surface of the packing in the distillation tower 2 carry out mass transfer and heat transfer, so that a small amount of high-boiling components carried in the methanol vapor are liquefied, fall to the bottom of the distillation tower 2 along with the reflux liquid, and simultaneously, the methanol in the reflux liquid is gasified and continuously rises to the top of the distillation tower 2 along with the methanol vapor.
In the distillation process, in order to reduce heat consumption in the distillation tower 2, maintain the top temperature in the distillation tower 2, be provided with the heat preservation subassembly at the outer wall of distillation tower 2, keep warm distillation tower 2, reduce the waste of vapor heat. The heat preservation assembly comprises a heat exchange layer 201, a heat preservation layer 202 and a vacuum layer 203 which are detachably connected from inside to outside, wherein the heat exchange layer 201, the heat preservation layer 202 and the vacuum layer 203 are rectangular plates which can be bent.
A heat exchange cavity 210 is formed between the outer wall of the distillation column 2 and the heat exchange layer 201, and preferably, a heating liquid and a heater are arranged in the heat exchange cavity 210, and in the use process, according to the temperature in the distillation column 2, the heating liquid in the heat exchange cavity 210 is heated to the same temperature as that in the distillation column 2 by the heater, so that heat dissipation in the distillation column 2 into air is reduced. Meanwhile, a heat preservation cavity 220 is formed between the outer wall of the heat exchange layer 201 and the heat preservation layer 202, and heat preservation materials are filled in the heat preservation cavity 220, and can be asbestos, graphene or fiber cotton. A vacuum chamber 230 is formed between the vacuum layer 203 and the thermal insulation layer 202. The vacuum chamber 230 can prevent heat from diffusing, further improve the heat preservation effect in the distillation column 2, and reduce the waste of water vapor. Through setting up heat transfer layer 201, heat preservation 202 and vacuum layer 203 combined action, play fine heat preservation effect to the temperature of distillation column 2, heat dissipation has significantly reduced for the in-process that the methanol vapor risees, the reduction is because of the methanol liquefaction that the heat transfer caused falls back to distillation column 2 bottom, has improved the distillation efficiency of methanol. Meanwhile, the heat utilization rate of the water vapor is greatly improved, the use of the water vapor is greatly reduced, the waste of the water vapor is avoided, and the recovery cost of the methanol is reduced.
Through the scheme, the recovery of the methanol in the glufosinate-ammonium mother solution is realized. The steam is introduced into the evaporator to serve as a heat source, so that methanol in the steam is heated to be methanol steam, the methanol is further purified by the distillation tower, and purer methanol is obtained at the top of the distillation tower. Meanwhile, through the combined action of the heat exchange layer, the heat preservation layer and the vacuum layer, a good heat preservation effect is achieved on the temperature of the distillation tower, heat dissipation is greatly reduced, methanol vapor is enabled to fall back to the bottom of the distillation tower in the rising process, methanol liquefaction caused by heat exchange is reduced, and the distillation efficiency of methanol is improved. Meanwhile, the heat utilization rate of the water vapor is greatly improved, the use of the water vapor is greatly reduced, the waste of the water vapor is avoided, and the recovery cost of the methanol is reduced.
Fig. 3 is a schematic structural diagram of a heat insulation assembly according to another embodiment of the present utility model, as shown in fig. 3, optionally, a heat exchange medium inlet 2101 is disposed below one end of the heat exchange layer 201, and a heat exchange medium outlet 2102 is disposed above the other end of the heat exchange layer 201.
Specifically, flowing heat exchange medium with heat is introduced into the heat exchange cavity 210 through the heat exchange medium inlet 2101 arranged on the heat exchange layer 201, so that the internal temperature and the external temperature of the distillation tower 2 are consistent, the heat in the distillation tower 2 is not dissipated, the efficient operation of the distillation process is ensured, and the heat can be provided for the distillation tower 2. The heat exchange medium is output through heat exchange medium outlet 2102.
More preferably, the heat exchange layer 201 is installed such that the heat exchange medium inlet 2101 is positioned below the heat exchange medium outlet 2102, thereby ensuring uniform heat exchange.
As shown in fig. 3, optionally, a plurality of grids 2201 are fixedly arranged in the insulation layer 202, and insulation materials are filled in the grids 2201.
Specifically, the multiple grids 2201 are fixed on the heat insulation layer 202, and the heat insulation materials are arranged in the grids 2201, so that deformation and accumulation of the heat insulation materials are avoided in the use process, the heat insulation materials are continuously in a uniform distribution state in the heat insulation cavity 220, and the heat insulation effect is improved. And the grid is arranged on the heat insulation layer, so that the heat insulation layer is convenient to detach, and an operator can conveniently select whether the heat insulation layer is needed according to actual working conditions.
As shown in fig. 2, optionally, a vacuum layer 203 is welded to the outer wall of the insulation layer 202, the vacuum layer 203 is provided with a negative pressure port 204, and a vacuum gauge 240 is provided in the vacuum chamber 230.
Specifically, the negative pressure port 204 is used for connecting a negative pressure device, vacuumizing the vacuum cavity 230, and the vacuum gauge 240 is used for detecting the pressure in the vacuum cavity 230, so that the heat exchange cavity 210 is in a vacuum state, and further heat exchange between the inside and the outside of the distillation tower 2 is prevented, and the heat preservation effect is better.
Fig. 4 is a schematic structural diagram of a device for recovering and extracting methanol from glufosinate mother solution according to another embodiment of the present utility model, as shown in fig. 4, optionally, a tail gas outlet 410 is provided at the top of the reflux tank 4, and the tail gas outlet 410 is communicated with an air inlet of the condenser 3 through a negative pressure fan 6.
Specifically, the reflux tank 4 contains methanol liquid from the condenser 3 and a small amount of uncondensed methanol gas, and the negative pressure fan 6 is used for conveying the uncondensed methanol gas into the condenser 3 again for condensation, so that the escape of the methanol gas into the air is reduced, and the recovery efficiency of the methanol is improved.
Optionally, a pressure gauge 420 is arranged at the top of the reflux drum 4, and the pressure gauge 420 is connected with a negative pressure fan 6.
Specifically, the pressure gauge 420 is used to detect the top pressure of the reflux drum 4, and as the distillation apparatus is operated, the methanol liquid and a small amount of uncondensed methanol gas entering the reflux drum 4 are more and more increased, and the pressure above the liquid level in the reflux drum 4 (the methanol gas at the top of the reflux drum 4) is increased. The manometer 420 is connected with negative pressure fan 6 electricity, when the pressure of manometer 420 reaches the pressure of predetermineeing, transmits pressure signal to negative pressure fan 6, and the negative pressure fan 6 start-up that links with manometer 420, carries the condensation in the condenser 3 again with uncondensed methanol gas, has improved the degree of automation of device operation, simultaneously, has improved methanol distillation efficiency.
As shown in fig. 4, optionally, a first automatic valve 440 is disposed on a delivery line between the reflux drum 4 and the liquid return port of the distillation column 2, and a second automatic valve 450 is disposed on a delivery line between the reflux drum 4 and the product tank 5.
Specifically, when the device is operated, the reflux ratio is set according to the actual working condition, the first automatic valve 440 and the second automatic valve 450 are started and stopped according to the preset reflux ratio, and the operation of the device is more automatic.
As shown in fig. 4, the moisture meter 430 is optionally installed inside the reflux drum 4, and the moisture meter 430 is connected to the first automatic valve 440 and the second automatic valve 450, respectively.
Specifically, the moisture meter 430 is used to detect the water content in the methanol liquid in the reflux drum 4 to determine the purity of the methanol. When the water content detected by the moisture detector 430 is greater than or equal to a preset value, a first automatic valve 440 interlocked with the moisture detector 430 is opened, the methanol liquid is returned to the distillation tower 2 again for distillation, and when the water content detected by the moisture detector 430 is smaller than the preset value, a second automatic valve 450 interlocked with the moisture detector 430 is opened, and the methanol liquid is conveyed to the product storage tank 5 for storage for recycling. And simultaneously improves the purity of the methanol.
The technical scheme of the utility model is illustrated in detail by specific examples.
The device for recovering and extracting methanol from glufosinate-ammonium mother solution in the embodiment has the following operation flow in specific work:
the glufosinate-ammonium mother solution is conveyed into an evaporator 1, steam is introduced into the evaporator 1 as a heat source, the glufosinate-ammonium mother solution is heated, so that methanol in the glufosinate-ammonium mother solution is heated to be methanol steam, the methanol steam is conveyed into the distillation tower 2 from a steam inlet of the distillation tower 2 through a methanol steam conveying pipeline, the methanol steam continuously rises in the distillation tower 2 and exchanges heat with a filler in the distillation tower 2, a small amount of high-boiling-point components entrained in the methanol steam are liquefied, and the methanol steam passes through the layer-by-layer filler under the action of gravity and falls to the bottom of the distillation tower 2. The purer methanol vapor is obtained at the top of the distillation tower 2, and is conveyed to the condenser 3 for condensation through the gas phase outlet at the top of the distillation tower 2, the obtained methanol liquid is conveyed to the reflux tank 4, and the amount of the water vapor entering the evaporator 1 is controlled so that the temperature of the top of the distillation tower 2 is 60-63 ℃ and the temperature of the tower bottom is 100-105 ℃. And (3) conveying part of the methanol liquid in the reflux tank 4 back to the distillation tower 2 through a liquid return port of the distillation tower 2 for redistillation, and conveying the rest part of the methanol liquid to a product storage tank 5 for storage. Along with the operation of the distillation device, when methanol liquid flows back, the methanol vapor which continuously rises in the distillation tower 2 and the reflux liquid on the surface of the packing in the distillation tower 2 carry out mass transfer and heat transfer, so that a small amount of high-boiling components carried in the methanol vapor are liquefied, fall to the bottom of the distillation tower 2 along with the reflux liquid, and simultaneously, the methanol in the reflux liquid is gasified and continuously rises to the top of the distillation tower 2 along with the methanol vapor.
As the distillation apparatus operates, the methanol liquid and a small amount of non-condensed methanol gas entering the reflux drum 4 are more and more increased, and the pressure above the liquid surface of the reflux drum 4 (methanol gas at the top of the reflux drum 4) is increased. When the pressure of the pressure gauge 420 reaches the preset pressure, a pressure signal is transmitted to the negative pressure fan 6, the negative pressure fan 6 interlocked with the pressure gauge 420 is started, and the uncondensed methanol gas is transmitted to the condenser 3 again for condensation. Meanwhile, when the moisture content detected by the moisture meter 430 is greater than or equal to a preset value (e.g., 1%), the first automatic valve 440 interlocked with the moisture meter 430 is opened, the methanol liquid is returned to the distillation column 2 again for distillation, and when the moisture content detected by the moisture meter 430 is less than the preset value, the second automatic valve 450 interlocked with the moisture meter 430 is opened, and the methanol liquid is transferred to the product storage tank 5 for storage for recycling.
In order to reduce heat consumption in the distillation column 2 and maintain the temperature of the top of the distillation column 2 during distillation, a heat-insulating component is arranged on the outer wall of the distillation column 2. The heat preservation assembly comprises a heat exchange layer 201, a heat preservation layer 202 and a vacuum layer 203 which are detachably connected from inside to outside, wherein the heat exchange layer 201, the heat preservation layer 202 and the vacuum layer 203 are rectangular plates which can be bent.
The flowing heat exchange medium with heat is introduced into the heat exchange cavity 210 through the heat exchange medium inlet 2101 arranged on the heat exchange layer 201, so that the internal temperature and the external temperature of the distillation tower 2 are consistent, and the heat in the distillation tower 2 is not dissipated. The insulation layer 202 is fixedly provided with a plurality of grids 2201, and insulation materials are filled in the grids 2201, wherein the insulation materials can be asbestos, graphene and fiber cotton. A vacuum chamber 230 is formed between the vacuum layer 203 and the heat insulation layer 202, a negative pressure device is connected through a negative pressure port 204, the vacuum chamber 230 is vacuumized, and a vacuum gauge 240 is used for detecting the pressure in the vacuum chamber 230, so that the heat exchange chamber 210 is in a vacuum state.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solution of the present utility model, and not limiting thereof; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will appreciate that; the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (8)
1. The utility model provides a device of glufosinate-ammonium mother liquor recovery extraction methanol which characterized in that includes: the device comprises an evaporator (1), a distillation tower (2), a condenser (3), a reflux tank (4) and a product storage tank (5) which are sequentially communicated, wherein a liquid outlet of the distillation tower (2) is also communicated with a liquid inlet of the evaporator (1), and an outlet of the reflux tank (4) is also communicated with a liquid return port of the distillation tower (2);
the outer wall of the distillation tower (2) is provided with a heat preservation assembly, the heat preservation assembly comprises a heat exchange layer (201), a heat preservation layer (202) and a vacuum layer (203) which are detachably connected from inside to outside, and the heat exchange layer (201), the heat preservation layer (202) and the vacuum layer (203) are rectangular plates which can be bent;
the heat exchange layer (201) is connected with the outer wall of the distillation tower (2), a heat exchange cavity (210) is formed between the outer wall of the distillation tower (2) and the heat exchange layer (201), the heat insulation layer (202) is connected with the outer wall of the heat exchange layer (201), a heat insulation cavity (220) is formed between the outer wall of the heat exchange layer (201) and the heat insulation layer (202), heat insulation materials are filled in the heat insulation cavity (220), and a vacuum cavity (230) is formed between the vacuum layer (203) and the heat insulation layer (202).
2. The device for recovering and extracting methanol from glufosinate-ammonium mother solution according to claim 1, wherein a heat exchange medium inlet (2101) is arranged below one end of the heat exchange layer (201), and a heat exchange medium outlet (2102) is arranged above the other end of the heat exchange layer (201).
3. The device for recovering and extracting methanol from glufosinate-ammonium mother solution according to claim 1, wherein a plurality of grids (2201) are fixedly arranged in the heat preservation layer (202), and the grids (2201) are filled with the heat preservation material.
4. The device for recovering and extracting methanol from glufosinate-ammonium mother solution according to claim 1, wherein the vacuum layer (203) is welded on the outer wall of the heat insulation layer (202), the vacuum layer (203) is provided with a negative pressure port (204), and a vacuum gauge (240) is arranged in the vacuum cavity (230).
5. The device for recovering and extracting methanol from glufosinate-ammonium mother solution according to claim 1, wherein a tail gas outlet (410) is formed in the top of the reflux tank (4), and the tail gas outlet (410) is communicated with the air inlet of the condenser (3) through a negative pressure fan (6).
6. The device for recycling and extracting methanol from glufosinate-ammonium mother solution according to claim 5, wherein a pressure gauge (420) is arranged at the top of the reflux drum (4), and the pressure gauge (420) is connected with the negative pressure fan (6).
7. The device for recovering and extracting methanol from glufosinate-ammonium mother solution according to claim 6, wherein a first automatic valve (440) is arranged on a conveying pipeline between the reflux tank (4) and a liquid return port of the distillation tower (2), and a second automatic valve (450) is arranged on a conveying pipeline between the reflux tank (4) and the product storage tank (5).
8. The device for recovering and extracting methanol from glufosinate-ammonium mother solution according to claim 7, wherein the reflux drum (4) is internally provided with a moisture meter (430), and the moisture meter (430) is respectively connected with the first automatic valve (440) and the second automatic valve (450).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320139265.4U CN219595888U (en) | 2023-01-13 | 2023-01-13 | Device for recovering and extracting methanol from glufosinate mother solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320139265.4U CN219595888U (en) | 2023-01-13 | 2023-01-13 | Device for recovering and extracting methanol from glufosinate mother solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219595888U true CN219595888U (en) | 2023-08-29 |
Family
ID=87755645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320139265.4U Active CN219595888U (en) | 2023-01-13 | 2023-01-13 | Device for recovering and extracting methanol from glufosinate mother solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219595888U (en) |
-
2023
- 2023-01-13 CN CN202320139265.4U patent/CN219595888U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109264687A (en) | A kind of phosphoric acid microwave flash distillation prepares the method and apparatus of polyphosphoric acid | |
| CN206001743U (en) | Absorption type heat pump system | |
| CN113526600B (en) | Desalting and deoxidizing equipment and method | |
| CN102748963B (en) | Closed water cooling system with double-evaporative cooling pressure | |
| CN219595888U (en) | Device for recovering and extracting methanol from glufosinate mother solution | |
| CN107128888A (en) | Technical grade polyphosphoric acid production technology and its system | |
| CN207957816U (en) | Waste ammonia liquor recycling and processing device in a kind of urea production process | |
| CN103566605A (en) | Treatment equipment and treatment method of molasses alcohol waste liquid | |
| CN217323421U (en) | Negative pressure ammonia distillation system for low-grade energy utilization of coking plant | |
| CN108273282B (en) | Vapor phase low-order heat recovery system of trioxymethylene synthetic distillation tower and recovery method thereof | |
| CN213739032U (en) | Novel initiative recovery latent heat disk type solar energy sea water desalination device | |
| CN205252839U (en) | Hydrogen chloride gas absorbing device | |
| CN204265453U (en) | A kind of device of lower concentration ammoniacal liquor high purity ammonia | |
| CN102650486B (en) | Closed water cooling system being capable of producing condensed water | |
| CN209835865U (en) | Landfill leachate purifier | |
| CN208308431U (en) | A kind of VCM purification hydrochloric acid full stripping device | |
| CN219674847U (en) | Compact heat exchange device | |
| CN206257647U (en) | A kind of non-clean Steam Recovery utilization system of injecting type | |
| CN213977037U (en) | Device for concentrating and crystallizing by utilizing humidity difference of air | |
| CN205843134U (en) | A kind of vaporizer | |
| CN203208701U (en) | Glyoxylic acid solution concentrator | |
| CN105112107A (en) | Waste heat recovery and utilization system for semi-water gas in ammonia synthesizing process | |
| CN220926341U (en) | Metering device for evaporation concentration | |
| CN213100907U (en) | Magnesium sulfate, zinc sulfate flash distillation crystallization device | |
| CN203464774U (en) | Condenser used for producing meropenem branched chains |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |