CN108452545A - A kind of rectification under vacuum system - Google Patents
A kind of rectification under vacuum system Download PDFInfo
- Publication number
- CN108452545A CN108452545A CN201810350662.XA CN201810350662A CN108452545A CN 108452545 A CN108452545 A CN 108452545A CN 201810350662 A CN201810350662 A CN 201810350662A CN 108452545 A CN108452545 A CN 108452545A
- Authority
- CN
- China
- Prior art keywords
- precipitation
- condenser
- vacuum
- delivery outlet
- level
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- B01D3/10—Vacuum distillation
- B01D3/106—Vacuum distillation with the use of a pump for creating vacuum and for removing the distillate
-
- 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
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
- B01D3/146—Multiple effect distillation
-
- 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
- B01D5/0033—Other features
- B01D5/0036—Multiple-effect condensation; Fractional condensation
-
- 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
- B01D5/0033—Other features
- B01D5/0045—Vacuum condensation
-
- 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
- B01D5/0033—Other features
- B01D5/0054—General arrangements, e.g. flow sheets
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of rectification under vacuum systems, including precipitation kettle, the precipitation kettle delivery outlet is connect with precipitation first-stage condenser input port, the precipitation first-stage condenser delivery outlet is connect with precipitation secondary condenser input port, the precipitation secondary condenser delivery outlet is connect by pipeline with precipitation kettle input port and precipitation three-level condenser input port respectively, the precipitation three-level condenser is connected by circulation with dichloroethanes container, the delivery outlet of the precipitation three-level condenser top setting is connect with vacuum first-stage condenser, the vacuum first-stage condenser is connected by circulation with precipitation vacuum buffer tank, the delivery outlet of vacuum first-stage condenser lower part setting is connected by precipitation vacuum pump and trap.The present invention is by increasing precipitation three-level condenser and vacuum secondary condenser and trap, distillation system optimization to desolventizing, is acquired according to operation while opening each condenser refrigerant, cools down to the component of extraction, can abundant recycling design, reduce the consumption of solvent.
Description
Technical field
The present invention relates to chemical technology fields, and in particular to a kind of distillation system.
Background technology
Rectifying is to utilize a kind of separation process that each component volatility in mixture is different and is detached each component.
During existing organic solvent rectification under vacuum, since organic solvent cannot be condensed adequately, make organic solvent emission in exhaust gas
It measures larger, brings deleterious effect, the consumption of solvent also to become larger therewith environment, cause that the production cost increases, it is often more important that
Organic solvent largely enters vacuum pump, and there are security risks.
Invention content
In view of the above-mentioned problems, the present invention provides a kind of rectification under vacuum system, its object is to：It can fully recycle molten
Agent reduces the consumption of solvent, it is ensured that organic solvent emission value is minimum in tail gas, reduces security risk.
To achieve the above object, the present invention is by following technical solution：
A kind of rectification under vacuum system, including precipitation kettle, precipitation first-stage condenser, precipitation secondary condenser, precipitation three-level condenser,
Vacuum first-stage condenser, vacuum secondary condenser, dichloroethanes container, precipitation vacuum buffer tank and trap, wherein described de-
Molten kettle delivery outlet is connect with precipitation first-stage condenser input port, the precipitation first-stage condenser delivery outlet and precipitation secondary condenser
Input port connects, and the precipitation secondary condenser delivery outlet passes through pipeline and precipitation kettle input port and precipitation three-level condenser respectively
Input port connects, and the precipitation three-level condenser is connected by circulation with dichloroethanes container, and the precipitation three-level condenser top is set
The delivery outlet set is connect with vacuum first-stage condenser, and the vacuum first-stage condenser is connected by circulation with precipitation vacuum buffer tank, institute
The delivery outlet for stating the setting of vacuum first-stage condenser lower part is connect by precipitation vacuum pump with trap, the trap and vacuum two
Grade condenser connection.
Preferably, the dichloroethanes container is two, including normal pressure takes off dichloroethanes and negative pressure takes off dichloroethanes container,
It is connect respectively with the delivery outlet that precipitation three-level condenser bottom is arranged by pipeline.
Preferably, the precipitation three-level condenser inner condensat liquid is chilled brine.
Preferably, the vacuum first-stage condenser and vacuum secondary condenser inner condensat liquid are ethylene glycol cold water.
Preferably, the trap is gas trap.
Beneficial effects of the present invention：
The present invention is excellent to the distillation system of desolventizing by increasing precipitation three-level condenser and vacuum secondary condenser and trap
Change, each condenser refrigerant be acquired while opened according to operation, to the cooling of the component of extraction, can abundant recycling design, subtract
The consumption of few solvent.
Description of the drawings
Fig. 1：Structure of the invention principle schematic.
In figure：1, precipitation kettle, 2, precipitation first-stage condenser, 3, precipitation secondary condenser, 4, precipitation three-level condenser, 5, true
Empty first-stage condenser, 6, normal pressure dichloroethanes container, 7, precipitation vacuum buffer tank, 8, vacuum secondary condenser, 9, trap,
10, negative pressure takes off dichloroethanes container.
Specific implementation mode
The present invention is described further with reference to the accompanying drawings and examples：
As shown in Figure 1, a kind of distillation system of the present invention, including precipitation kettle 1, precipitation first-stage condenser 2, precipitation secondary condenser
3, precipitation three-level condenser 4, vacuum first-stage condenser 5, vacuum secondary condenser 8, dichloroethanes container 6, precipitation vacuum buffer
Tank 7 and trap 9.Wherein, 1 delivery outlet of precipitation kettle is connect with 2 input port of precipitation first-stage condenser, and the precipitation level-one is cold
2 delivery outlet of condenser is connect with 3 input port of precipitation secondary condenser, and 3 delivery outlet of precipitation secondary condenser passes through pipeline respectively
It is connect with 1 input port of precipitation kettle and 4 input port of precipitation three-level condenser, the precipitation three-level condenser 4 and dichloroethanes container 6
It is connected by circulation, the delivery outlet of 4 top of the precipitation three-level condenser setting is connect with vacuum first-stage condenser 5, the vacuum one
Grade condenser 5 is connected by circulation with precipitation vacuum buffer tank 7, and the delivery outlet of 5 lower part of the vacuum first-stage condenser setting, which passes through, to be taken off
Molten vacuum pump is connect with trap 9, and the trap 9 is connect with vacuum secondary condenser 8.
Specific work process：
This system rectifying early period is that normal pressure takes off dichloroethanes, and the later stage carries out depressurizing de- dichloroethanes；
It is first turned on precipitation first-stage condenser and precipitation secondary condenser Inlet and outlet water valve, it is appropriate to open precipitation three-level condenser salt
Water passes in and out valve and vacuum level-one, secondary condenser pass in and out cold ethanediol penstock, and it is slow slowly to open reboiler steam valve
Heating；6 top of normal pressure dichloroethanes container is depending on finding there is distillate at cup, adjusting steam pressure, normal pressure precipitation dichloroethanes, often
Pressure-off cementing beam；Start vacuum pump, slowly open vacuum pump and remove precipitation kettle main valve, tunes up vacuum level-one, secondary condenser disengaging
Cold ethanediol penstock depressurizes the dichloroethanes of extraction to negative pressure dichloroethanes container 10.Vacuum secondary condenser coolant liquid is arranged
To trap 9, tail gas is expelled to exhaust treatment system through vacuum secondary condenser.
To sum up, the present invention achieves the desired purpose.
Claims (5)
1. a kind of rectification under vacuum system, including the condensation of precipitation kettle, precipitation first-stage condenser, precipitation secondary condenser, precipitation three-level
Device, vacuum first-stage condenser, vacuum secondary condenser, dichloroethanes container, precipitation vacuum buffer tank and trap, wherein institute
It states precipitation kettle delivery outlet to connect with precipitation first-stage condenser input port, the precipitation first-stage condenser delivery outlet and precipitation two level are cold
Condenser input port connects, and the precipitation secondary condenser delivery outlet is cold by pipeline and precipitation kettle input port and precipitation three-level respectively
Condenser input port connects, and the precipitation three-level condenser is connected by circulation with dichloroethanes container, on the precipitation three-level condenser
The delivery outlet of portion's setting is connect with vacuum first-stage condenser, and the vacuum first-stage condenser connects with precipitation vacuum buffer tank cycle
Connect, the vacuum first-stage condenser lower part setting delivery outlet connect with trap by precipitation vacuum pump, the trap and
Vacuum secondary condenser connects.
2. the system as claimed in claim 1, it is characterised in that：The dichloroethanes container is two, including normal pressure takes off dichloro
Ethane and negative pressure take off dichloroethanes container, are connect respectively with the delivery outlet that precipitation three-level condenser bottom is arranged by pipeline.
3. the system as claimed in claim 1, it is characterised in that：The precipitation three-level condenser inner condensat liquid is chilled brine.
4. the system as claimed in claim 1, it is characterised in that：It is cold in the vacuum first-stage condenser and vacuum secondary condenser
Lime set is ethylene glycol cold water.
5. the system as claimed in claim 1, it is characterised in that：The trap is gas trap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810350662.XA CN108452545A (en) | 2018-04-18 | 2018-04-18 | A kind of rectification under vacuum system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810350662.XA CN108452545A (en) | 2018-04-18 | 2018-04-18 | A kind of rectification under vacuum system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108452545A true CN108452545A (en) | 2018-08-28 |
Family
ID=63235048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810350662.XA Withdrawn CN108452545A (en) | 2018-04-18 | 2018-04-18 | A kind of rectification under vacuum system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108452545A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110015986A (en) * | 2019-04-29 | 2019-07-16 | 山东汇盟生物科技股份有限公司 | A kind of chloro- 2- chloromethyl -4- cyanobutyraldehyde cyclization device of 2- |
-
2018
- 2018-04-18 CN CN201810350662.XA patent/CN108452545A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110015986A (en) * | 2019-04-29 | 2019-07-16 | 山东汇盟生物科技股份有限公司 | A kind of chloro- 2- chloromethyl -4- cyanobutyraldehyde cyclization device of 2- |
| CN110015986B (en) * | 2019-04-29 | 2024-02-20 | 山东汇盟生物科技股份有限公司 | 2-chloro-2-chloromethyl-4-cyano butyraldehyde cyclization device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103301640B (en) | Concentration method and device for traditional Chinese medicine extracting solution | |
| CN103073145A (en) | System for recovering light oil from residual ammonia water | |
| CN101966396B (en) | Evaporation device | |
| CN108452545A (en) | A kind of rectification under vacuum system | |
| CN208193710U (en) | A kind of rectification under vacuum system | |
| CN108525338A (en) | Alcohol recycle rectifying device and alcohol recycle rectificating method | |
| CN210813998U (en) | Rectification separation system | |
| CN205627127U (en) | MVR triple -effect evaporator | |
| CN205170790U (en) | Spices draws enrichment facility | |
| CN208457934U (en) | Slag waste water residual heat recycles energy saver | |
| CN203770068U (en) | Vacuum-pumping system of water ring | |
| CN204648619U (en) | Condensing hot air furnace case | |
| CN209348140U (en) | A kind of Three-effect concentration evaporator | |
| CN104998519B (en) | Ammonia gas absorption device for tert-butyl alcohol reduced pressure recovery tower and ammonia gas absorption method | |
| CN209230055U (en) | A kind of automatically controlled cooling-water machine of water cooling with dual-cycle plant | |
| CN206626979U (en) | A kind of desalinization inversely cools down fixed gas system with multistage condenser | |
| CN203810809U (en) | Refrigerating system and gas exhausting device for same | |
| CN106568245B (en) | Automatic evacuation gas device | |
| CN208121043U (en) | The quick separating recyclable device of automatic separating apparatus and liquid | |
| CN206499893U (en) | A kind of external circulation heating formula classification alcohol concentration and recovery device with rectifying column | |
| CN220098622U (en) | Low-temperature evaporation device | |
| CN104019592A (en) | Novel ammonia refrigeration oil-removing separator | |
| CN107062927A (en) | A kind of desalinization inversely cools down fixed gas system and its technique with multistage condenser | |
| CN205796626U (en) | Negative-pressure type oily-water seperating equipment | |
| CN204996156U (en) | Fragrance gas recovery system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180828 |
|
| WW01 | Invention patent application withdrawn after publication |