CN111790172A - Solvent distillation recovery system and use method - Google Patents
Solvent distillation recovery system and use method Download PDFInfo
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- CN111790172A CN111790172A CN202010744877.7A CN202010744877A CN111790172A CN 111790172 A CN111790172 A CN 111790172A CN 202010744877 A CN202010744877 A CN 202010744877A CN 111790172 A CN111790172 A CN 111790172A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
- B01D5/006—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with evaporation or distillation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
- B01D5/009—Collecting, removing and/or treatment of the condensate
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a solvent distillation recovery system and a using method thereof, and the solvent distillation recovery system comprises a distillation retort, a condenser, an alkali washing tank, a water washing pump and a finished product pump, wherein the distillation retort is provided with a feed inlet, a condensed water outlet and a steam pipeline, the distillation retort is connected with the condenser, the condenser is provided with a circulating water inlet pipe and a circulating water outlet pipe, the condenser is connected with a vacuum pump and a buffer tank, the buffer tank is communicated with the alkali washing tank through an alkali washing pump, one pipeline of the alkali washing tank is connected with the water washing tank through the water washing pump, the other pipeline of the alkali washing tank is connected with a sewage tank, and the water; the solvent distillation recovery system can greatly reduce the consumption of the solvent after the solvent is recovered, also solves the problem of solid waste generated by activated carbon adsorption in the solvent production and recovery process, reduces manpower and material resources and workload, improves the working benefit and saves the production cost.
Description
Technical Field
The invention relates to the technical field of solvent distillation recovery, in particular to a solvent distillation recovery system and a using method thereof.
Background
Distillation is a separation process that utilizes steam heating and vacuum pumping to separate media, and utilizes the different boiling points of each component in mixed liquid to evaporate low boiling point components under vacuum condition, and then condenses to be a combination of operation processes. Compared with other separation means, such as extraction, filtration and crystallization, the method has the advantages of fast separation effect, high content of separated solvent and no formation of new impurities.
The steam adopted by the existing distillation equipment during working heats the solvent, so that the phenomenon of uneven heating can occur, and the potential safety hazard of explosion of the distillation equipment due to uneven heating is easy to occur; the distillation is heated slowly by steam alone, and the solvent is heated unevenly, which results in low distillation efficiency. At present, the solvent recovery is realized by the technologies of activated carbon and the like through filtration, new solid waste is generated, the solid waste treatment is very troublesome in the current severe environment-friendly situation, the technology adopts the modes of steam heating and vacuum pumping to realize the separation of the solvent and impurities, the expected index is reached, and the characteristic of difficult solid waste treatment after the activated carbon filtration is solved.
Disclosure of Invention
The invention aims to solve the problems and provide a solvent distillation recovery system which can greatly reduce the consumption of a solvent, also solve the problem of solid waste generated by activated carbon adsorption in the production and recovery processes of the solvent, reduce manpower and material resources and workload, improve the working benefit and save the production cost.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a solvent distillation recovery system, includes the retort, and the condenser alkali wash jar, washing pump and finished product pump, be equipped with feed inlet, comdenstion water export and steam conduit on the retort, the retort is connected with the condenser, be equipped with circulation inlet tube and circulation outlet pipe on the condenser, vacuum pump and buffer tank are connected to the condenser, the buffer tank is washed alkali the jar through alkali wash pump intercommunication, wash the jar with alkali one of them pipeline of jar and pass through the washing pump and connect the washing jar, another pipe connection sewage jar, the washing jar passes through the finished product pump and connects the finished product jar.
Preferably, a stirring device is arranged in the distillation tank, wherein the stirring device comprises a first stirring paddle and a second stirring paddle, the first stirring paddle and the second stirring paddle are two and symmetrically arranged according to the stirring rod, and the first stirring paddle and the second stirring paddle are in a shape like a Chinese character 'hui' in the distillation tank.
Preferably, the heating coils are wound around the first stirring paddle and the second stirring paddle, and the top of the distillation tank is provided with a power device which enables the heating coils to be electrified and heated.
Preferably, power device includes first permanent magnet, second permanent magnet and coil, the both sides at the puddler are established to first permanent magnet and second permanent magnet, the puddler passes power device and is equipped with the coil, the coil is established between first permanent magnet and second permanent magnet, the coil passes and fixes on the puddler, the electric circle that generates heat is passed through the wire at the both ends of coil.
Preferably, the puddler is rotated by the motor drive, the puddler is hollow tube system structure.
The invention also provides a use method of the solvent distillation recovery system, which comprises the following steps:
starting a steam pipeline and a stirring rod in the distillation tank;
starting a vacuum pump and a condenser;
standing for 30min after the alkaline washing tank is subjected to alkaline washing for 30min, and removing the alkaline liquor;
washing with water in a washing tank for 30min, standing for 30min, and removing water layer;
and the water washing tank pumps the washed solvent into a finished product tank.
Preferably, the solvent in the distillation tank is heated to the boiling point, then the condenser is opened, and cold water is introduced through the circulating water inlet pipe to cool.
Preferably, when the alkali liquor is cut off, the alkali liquor layer is precipitated to the lower layer of the alkali washing tank, and the alkali liquor is discharged under the control of a valve through a pipeline.
Preferably, when the water layer is cut off, the water layer is arranged at the lower layer of the water washing tank, and the water layer is drained through a pipeline and controlled by a valve.
Preferably, the alkali liquid layer and the water layer are conveyed to a sewage tank through pipelines, and the solvent is conveyed to a finished product tank.
Compared with the prior art, the invention has the following beneficial effects:
the solvent distillation recovery system can greatly reduce the consumption of the solvent after the solvent is recovered, also solves the problem of solid waste generated by activated carbon adsorption in the solvent production and recovery process, reduces manpower and material resources and workload, improves the working benefit and saves the production cost.
Drawings
FIG. 1 is a block diagram of a solvent distillation recovery system of the present invention.
FIG. 2 is a schematic view showing the internal structure of a distillation tank according to the present invention.
In the figure: 1. a distillation tank; 101. a feed inlet; 102. a condensed water outlet; 103. a steam line; 104. a stirring rod; 105. a first stirring paddle; 106. a second stirring paddle; 107. a power plant; 108. a first permanent magnet; 109. a second permanent magnet; 110. a coil; 111. a heating coil; 2. a condenser; 3. a buffer tank; 4. a vacuum pump; 5. an alkaline washing pump; 6. an alkaline washing tank; 7. a water washing pump; 8. a water washing tank; 9. a finished product pump; 10. a sewage tank; 11. and (5) a finished product can.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The first embodiment is as follows: referring to fig. 1-2, a solvent distillation recovery system includes a distillation tank 1, a condenser 2, an alkaline washing tank 6, a water washing pump 7 and a finished product pump 9, the distillation tank 1 is provided with a feed inlet 101, a condensed water outlet 102 and a steam pipeline 103, and is characterized in that: the distillation tank 1 is connected with a condenser 2, a circulating water inlet pipe 201 and a circulating water outlet pipe 202 are arranged on the condenser 2, the condenser 2 is connected with a vacuum pump 4 and a buffer tank 3, the buffer tank 3 is communicated with an alkaline washing tank 6 through an alkaline washing pump 5, one pipeline of the alkaline washing tank 6 is connected with a water washing tank 8 through a water washing pump 7, the other pipeline is connected with a sewage tank 10, the water washing tank 8 is connected with a finished product tank 11 through a finished product pump 9, a stirring device is arranged in the distillation tank 1 and comprises a first stirring paddle 105 and a second stirring paddle 106, the first stirring paddle 105 and the second stirring paddle 106 are two and are symmetrically arranged according to a stirring rod 104, the first stirring paddle 105 and the second stirring paddle 106 are in a shape like the Chinese character 'hui' in the distillation tank 1, a heating electric coil 111 is wound around the first stirring paddle 105 and the second stirring paddle 106, and a power device 107 is arranged at the top of the distillation tank 1, this power device 107 makes the electricity of heating coil 111 generate heat, power device 107 includes first permanent magnet 108, second permanent magnet 109 and coil 110, first permanent magnet 108 and second permanent magnet 109 are established in the both sides of puddler 104, puddler 104 passes power device 107 and is equipped with coil 110, coil 110 is established between first permanent magnet 108 and second permanent magnet 109, coil 110 passes and fixes on puddler 104, the both ends of coil 110 are passed through the wire and are connected heating coil 111, puddler 104 is driven by the motor and is rotated, puddler 104 is the hollow control structure.
The application method of the solvent distillation recovery system comprises the following steps:
starting a steam pipeline 103 and a stirring rod 104 in the distillation tank 1; starting the vacuum pump 4 and the condenser 2; standing for 30min after the alkali washing of the alkali washing tank 6 for 30min, and removing alkali liquor; washing with water in washing tank 8 for 30min, standing for 30min, and removing water layer; the water washing tank 8 pumps the solvent after water washing into the finished product tank 11.
The condenser 2 is opened and cold water cooling is let in through circulating water inlet pipe 201 after the solvent heating in the retort 1 reaches the boiling point, and during alkali lye excision, the alkali lye layer deposits to the lower floor of alkali wash tank 6, and by valve control discharge alkali lye through the pipeline, during the water layer excision, the water layer is in the lower floor of washing tank 8, through the pipeline by valve control discharge water layer, and alkali lye layer and water layer pass through the pipeline and carry to the sewage tank 10 in, and the solvent is carried to in the finished product jar 11.
Putting the recovered waste solvent into a distillation tank 1, opening a coil pipe steam valve and a stirring rod 104 of the distillation tank 1, heating the solvent uniformly, starting a vacuum pump 4, opening a condenser 2 to circulate cooling water after the solvent is heated to a boiling point, and separating the solvent and impurities by utilizing the difference of the boiling points of the solvent and the impurities to achieve the purpose of recycling; distilled solvent is pumped into an alkaline washing tank 6 through an alkaline washing pump 5, alkali liquor is removed after 30 minutes of alkaline washing and then is static for 30 minutes after layering, the rest solvent is pumped into a water washing tank 8 through a water washing pump 7, is washed for 30 minutes and then is static for 30 minutes, the density of the alkali liquor and the density of a water layer are large, the solvent sinks to the bottoms of the alkaline washing tank 6 and the water washing tank 8, the alkali liquor and the water layer are removed after layering, the washed solvent is pumped into a finished product tank 11 through a finished product pump 9, and impurities are discharged into a sewage tank 10 from the alkaline washing tank 6 and the water washing tank 8 through pipelines.
Example two: the utility model provides a solvent distillation recovery system, includes retort 1, condenser 2, alkali wash jar 6, washing pump 7 and finished product pump 9, be equipped with feed inlet 101, comdenstion water export 102 and steam conduit 103 on retort 1, its characterized in that: retort 1 is connected with condenser 2, be equipped with circulation inlet tube 201 and circulation outlet pipe 202 on the condenser 2, vacuum pump 4 and buffer tank 3 are connected to condenser 2, buffer tank 3 is through alkaline washing pump 5 intercommunication alkaline washing jar 6, one of them pipeline of alkaline washing jar 6 passes through washing pump 7 and connects washing jar 8, another pipe connection sewage tank 10, washing jar 8 passes through finished product pump 9 and connects finished product jar 11, be equipped with agitating unit in retort 1, wherein agitating unit includes first stirring rake 105 and second stirring rake 106, first stirring rake 105 is two and establishes according to puddler 104 symmetry with second stirring rake 106, two first stirring rake 105 is "the" font of returning "with second stirring rake 106 in retort 1, puddler 104 is rotated by the motor drive.
The application method of the solvent distillation recovery system comprises the following steps:
starting a steam pipeline 103 and a stirring rod 104 in the distillation tank 1; starting the vacuum pump 4 and the condenser 2; standing for 40min after the alkali washing tank 6 is subjected to alkali washing for 60min, and removing alkali liquor; washing with water in washing tank 8 for 60min, standing for 40min, and removing water layer; the water washing tank 8 pumps the solvent after water washing into the finished product tank 11.
The condenser 2 is opened and cold water cooling is let in through circulating water inlet pipe 201 after the solvent heating in the retort 1 reaches the boiling point, and during alkali lye excision, the alkali lye layer deposits to the lower floor of alkali wash tank 6, and by valve control discharge alkali lye through the pipeline, during the water layer excision, the water layer is in the lower floor of washing tank 8, through the pipeline by valve control discharge water layer, and alkali lye layer and water layer pass through the pipeline and carry to the sewage tank 10 in, and the solvent is carried to in the finished product jar 11.
Putting the recovered waste solvent into a distillation tank 1, opening a coil pipe steam valve and a stirring rod 104 of the distillation tank 1, heating the solvent uniformly, starting a vacuum pump 4, opening a condenser 2 to circulate cooling water after the solvent is heated to a boiling point, and separating the solvent and impurities by utilizing the difference of the boiling points of the solvent and the impurities to achieve the purpose of recycling; distilled solvent is pumped into an alkali washing tank 6 through an alkali washing pump 5, alkali liquor is removed after the solvent is washed by alkali for 60 minutes and then is kept static for 40 minutes after the solvent is layered, the rest solvent is pumped into a water washing tank 8 through a water washing pump 7, the solvent is washed by water for 60 minutes and then is kept static for 40 minutes, the density of the alkali liquor and the density of a water layer are large, the solvent sinks to the bottoms of the alkali washing tank 6 and the water washing tank 8, the alkali liquor and the water layer are removed after the solvent is layered, the washed solvent is pumped into a finished product tank 11 through a finished product pump 9, and impurities are discharged into a sewage tank 10 from the alkali washing tank 6 and the water washing tank 8 through pipelines.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. The utility model provides a solvent distillation recovery system, includes retort (1), condenser (2), alkali wash jar (6), washing pump (7) and finished product pump (9), be equipped with feed inlet (101), comdenstion water export (102) and steam conduit (103) on retort (1), its characterized in that: distillation retort (1) is connected with condenser (2), be equipped with circulation inlet tube (201) and circulation outlet pipe (202) on condenser (2), vacuum pump (4) and buffer tank (3) are connected in condenser (2), buffer tank (3) are through washing with alkaline pump (5) intercommunication alkali wash jar (6), wash with alkaline jar (6) one of them pipeline through washing pump (7) and connect washing jar (8), another pipe connection sewage tank (10), washing jar (8) are through finished product pump (9) connection finished product jar (11).
2. A solvent distillation recovery system according to claim 1, wherein: be equipped with agitating unit in retort (1), wherein agitating unit includes first stirring rake (105) and second stirring rake (106), first stirring rake (105) and second stirring rake (106) are two and set up according to puddler (104) symmetry, two first stirring rake (105) and second stirring rake (106) are "the font of returning" in retort (1).
3. A solvent distillation recovery system according to claim 2, wherein: heating coils (111) are wound around the first stirring paddle (105) and the second stirring paddle (106), a power device (107) is arranged at the top of the distillation tank (1), and the power device (107) enables the heating coils (111) to be electrified and heated.
4. A solvent distillation recovery system according to claim 3, wherein: power device (107) include first permanent magnet (108), second permanent magnet (109) and coil (110), the both sides at puddler (104) are established in first permanent magnet (108) and second permanent magnet (109), puddler (104) pass power device (107) and are equipped with coil (110), establish between first permanent magnet (108) and second permanent magnet (109) coil (110), coil (110) pass and fix on puddler (104), the both ends of coil (110) are passed through the wire and are connected heating coil (111).
5. A solvent distillation recovery system according to claim 2, wherein: the stirring rod (104) is driven by a motor to rotate, and the stirring rod (104) is of a hollow pipe control structure.
6. A method of using the system of any of claims 1-5, wherein: the method comprises the following steps:
starting a steam pipeline (103) and a stirring rod (104) in the distillation tank (1);
starting a vacuum pump (4) and a condenser (2);
the alkaline washing tank (6) is kept still for 30-40 min after alkaline washing for 30-60 min, and then the alkali liquor is cut off;
washing the water tank (8) for 30-60 min, standing for 30-40 min, and cutting off the water layer;
the water washing tank (8) pumps the solvent after water washing into a finished product tank (11).
7. The method of using a solvent distillation recovery system according to claim 6, wherein: and after the solvent in the distillation retort (1) is heated to the boiling point, the condenser (2) is opened, and cold water is introduced through the circulating water inlet pipe (201) for cooling.
8. The method of using a solvent distillation recovery system according to claim 6, wherein: when the alkali liquor is cut off, the alkali liquor layer is precipitated to the lower layer of the alkali washing tank (6), and the alkali liquor is discharged under the control of a valve through a pipeline.
9. The method of using a solvent distillation recovery system according to claim 6, wherein: when the water layer is cut off, the water layer is arranged at the lower layer of the washing tank (8) and is drained out through the pipeline and the valve control.
10. The method of using a solvent distillation recovery system according to claim 6, wherein: the alkali liquid layer and the water layer are conveyed into a sewage tank (10) through pipelines, and the solvent is conveyed into a finished product tank (11).
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| CN202010744877.7A CN111790172A (en) | 2020-07-29 | 2020-07-29 | Solvent distillation recovery system and use method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112830864A (en) * | 2020-12-24 | 2021-05-25 | 新沂市永诚化工有限公司 | Solvent recovery device for synthesis process of benzyl carbazate and use method |
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Application publication date: 20201020 |