CN108579115A - A kind of negative pressure evaporation rectifying combination separator - Google Patents
A kind of negative pressure evaporation rectifying combination separator Download PDFInfo
- Publication number
- CN108579115A CN108579115A CN201810419349.7A CN201810419349A CN108579115A CN 108579115 A CN108579115 A CN 108579115A CN 201810419349 A CN201810419349 A CN 201810419349A CN 108579115 A CN108579115 A CN 108579115A
- Authority
- CN
- China
- Prior art keywords
- rectifying
- negative pressure
- column
- evaporation
- steam
- 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.)
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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
- B01D3/14—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
- B01D1/00—Evaporating
- B01D1/28—Evaporating with vapour compression
-
- 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
-
- 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
- B01D3/148—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step in combination with at least one evaporator
Abstract
The present invention relates to the rectifying separation technology fields of multicomponent liquid mixture, specifically refer to a kind of negative pressure evaporation rectifying combination separator, it is evacuated and compressor set, the second negative pressure evaporation rectifying coupled column, pipeline and flowmeter including steam evaporator, the first negative pressure evaporation rectifying coupled column, negative pressure rectifying column, steam, make heavy constituent concentration higher in the product of extraction, so that the required rectifiying plate number of rectifying column is substantially reduced, steam at the top of rectifying column need not be condensed into liquid using additional energy source, consume big energy.At the same time, by after low-pressure steam pressurization temperature raising, as evaporating column liquid evaporation, traditional reboiler energy consumption is greatly reduced, carries out negative pressure rectifying to further increase rectifying separative efficiency.
Description
Technical field
The present invention relates to the rectifying separation technology field of multicomponent liquid mixture, in particular to a kind of negative pressure evaporation rectifying
Combine separator.
Background technology
Rectifying is a kind of distillating method for making liquid mixture be detached using reflux, is most widely used on chemical industry
Liquid mixture lock out operation, be widely used in the departments such as oil, chemical industry, light industry, food, metallurgy.Traditional rectifying device is
Continuous rectification apparatus, including rectifying column, reboiler, condenser etc..Wherein, vapour-liquid two is provided positioned at the rectifying column at middle part to connect
It touches and carries out interphase mass transfer；Condenser positioned at tower top makes steam be condensed, and partial condensation liquid is returned as phegma in tower,
Remaining distillate is proposed from tower top with light component product；Reboiler positioned at bottom of tower makes partially liq therein vaporize, and steam is in tower
Interior to rise through packing layer, remaining liquid is extracted as heavy constituent product from bottom of tower.Charging at the middle part of rectifying column, feeding liquid and
Upper tower segment returns to the liquid come and passes through packing layer decline together, and the steam that steam and lower tower section from reboiler come is together along tower
Rise.In entire rectifying column, vehicle repair major counter current contacting carries out interphase mass transfer.Volatile components in liquid phase enter vapour phase,
Difficult volatile component in vapour phase is transferred to liquid phase.To not forming the object system of azeotrope, as long as design and suitable operation, distillate will be
The volatile components of high-purity, tower bottom product by be high-purity difficult volatile component.
The main problem of traditional rectifying tower technology is high energy consumption, the main reason is that needing will to wait for repeatedly by reboiler point
It is evaporated to gas from liquid mixture；Secondly, it in order to realize reflux, and needs to be condensed into a large amount of steams again by condenser
Liquid, cooling procedure are also required to consumption mass energy.In addition, in order to obtain enough theoretical cam curves, rectifying column must design
It is sufficiently high, thus equipment volume is huge, investment and operating cost are high.
Invention content
The technical problem to be solved by the present invention is to overcome above-mentioned technical defects, provide a kind of negative pressure evaporation rectifying combination
Separator.
In order to solve the above technical problems, technical solution provided by the invention is a kind of negative pressure evaporation rectifying combination separation dress
It sets：It is evacuated and compressor set, the including steam evaporator, the first negative pressure evaporation-rectifying coupled column, negative pressure rectifying column, steam
Two negative pressure evaporations-rectifying coupled column, pipeline and flowmeter, the steam evaporator and the first negative pressure evaporation-rectifying coupled column
Between connected by pipeline, connected by pipeline between the first negative pressure evaporation-rectifying coupled column and negative pressure rectifying column, it is described
Negative pressure rectifying column and steam, which are evacuated, to be connected between compressor set by pipeline, and the steam evacuates negative with compressor set and second
It is connected by pipeline between pressure evaporation-rectifying coupled column.
It is steamed as an improvement, the first negative pressure evaporation-rectifying coupled column is equipped with exhaust port, the first steam-gas inlet, water
Gas return, first interface, second interface and third interface, the negative pressure rectifying column are equipped with the first vapor outlet port, second
Steam-gas inlet, the 4th interface and the 5th interface, the second negative pressure evaporation-rectifying coupled column are equipped with third steam-gas inlet, the
Two vapor outlet ports, the 6th interface and the 7th interface further include first flowmeter, second flowmeter, third flowmeter, the 4th flow
Meter and the 5th flowmeter.
As an improvement, including on the first negative pressure evaporation-rectifying coupled column and the first negative pressure evaporation-rectifying coupled column
Head cover, cylinder, heat transfer sheet, evaporation tubulation, pedestal, the first water dispenser and filler.
As an improvement, the negative pressure rectifying column includes head cover, liquid distributor, rectifying column cylinder, filler and pedestal.
The steam evaporator is vapor boiler, the water vapour pressure of vapor boiler 0.09MPa-0.4MPa it
Between.
The operating temperature of the first evaporation-rectifying coupled column is between 60 DEG C -90 DEG C, and operating pressure is in 50kPa-
Between 90kPa.
The operating temperature of the second evaporation-rectifying coupled column is between 60 DEG C -80 DEG C, and operating pressure is in 50kPa-
Between 90kPa.
The operating temperature of the negative pressure rectifying column is between 60 DEG C -80 DEG C, and operating pressure is between 50kPa-90kPa.
The steam evacuates between the admission pressure 50kPa-60kPa of compressor set, and pressure at expulsion is in 0.09-0.2MPa
Between.
After using the above structure, the invention has the advantages that：Make heavy constituent concentration higher in the product of extraction, thus makes
The required rectifiying plate number of rectifying column is obtained to be substantially reduced, it need not be cold using additional energy source by the steam at the top of rectifying column
It coagulates for liquid, consumes big energy.At the same time, it by after low-pressure steam pressurization temperature raising, as evaporating column liquid evaporation, drops significantly
Low traditional reboiler energy consumption carries out negative pressure rectifying to further increase rectifying separative efficiency, and simple in structure, flow is reasonable,
Method is advanced, and the operating cost of system is low, and clearly, energy-saving effect is notable for isolation technics technological progress.
Description of the drawings
Fig. 1 is overall structure diagram.
Fig. 2 is the structural schematic diagram of the first negative pressure evaporation-rectifying coupled column and the second negative pressure evaporation-rectifying coupled column.
Fig. 3 is the structural schematic diagram of negative pressure rectifying column.
Fig. 4 is the connection relationship diagram between each equipment.
As shown in the figure：1, steam evaporator, 2, the first negative pressure evaporation-rectifying coupled column, the 21, first head cover, 22, cylinder
Body, 23, heat transfer sheet, 24, evaporation tubulation, 25, first base, the 26, first water dispenser, the 27, first filler, 3, negative pressure rectifying
Column, the 31, second head cover, 32, liquid distributor, 33, rectifying column cylinder, the 34, second filler, 35, pedestal, 4, steam evacuates and pressure
Contracting unit, 5, the second negative pressure evaporation-rectifying coupled column, 61, exhaust port, 62, vapor return, the 63, first steam goes out
Mouthful, the 64, first steam-gas inlet, the 65, second steam-gas inlet, 66, third steam-gas inlet, the 67, second vapor outlet port, 71, first connects
Mouthful, 72, second interface, 73, third interface, the 74, the 4th interface, the 75, the 5th interface, the 76, the 6th interface, the 77, the 7th interface,
81, first flowmeter, 82, second flowmeter, 83, third flowmeter, the 84, the 4th flowmeter, the 85, the 5th flowmeter.
Specific implementation mode
Present invention will be described in further detail below with reference to the accompanying drawings.
In conjunction with attached drawing, including steam evaporator 1, the first negative pressure evaporation-rectifying coupled column 2, negative pressure rectifying column 3, steam
It evacuates and compressor set 4, the second negative pressure evaporation-rectifying coupled column 5, pipeline and flowmeter, the steam evaporator 1 and first
It is connected by pipeline between negative pressure evaporation-rectifying coupled column 2, the first negative pressure evaporation-rectifying coupled column 2 and negative pressure rectifying column
It is connected by pipeline between 3, the negative pressure rectifying column 3 and steam are evacuated and connected by pipeline between compressor set 4, the steaming
Gas, which is evacuated, to be connected between compressor set 4 and the second negative pressure evaporation-rectifying coupled column 5 by pipeline.
First negative pressure evaporation-rectifying the coupled column 2 is equipped with exhaust port 61, vapor return 62, first is steamed
Gas import 63, first interface 71, second interface 72 and third interface 73, the negative pressure rectifying column 3 are equipped with the second steam-gas inlet
64, the first vapor outlet port 65, the 4th interface 74 and the 5th interface 75, the second negative pressure evaporation-rectifying coupled column 5 are equipped with the
Three steam-gas inlets 66, the second vapor outlet port 67, the 6th interface 76 and the 7th interface 77, further include first flowmeter 81, second
Gauge 82, third flowmeter 83, the 4th flowmeter 84 and the 5th flowmeter 85.
It include the first top on the first negative pressure evaporation-rectifying coupled column 2 and the first negative pressure evaporation-rectifying coupled column 2
Lid 21, cylinder 22, heat transfer sheet 23, evaporation tubulation 24, first base 25, the first water dispenser 26 and the first filler 27.
The negative pressure rectifying column 3 includes the second head cover 31, liquid distributor 32, rectifying column cylinder 33,34 and of the second filler
Pedestal 35.
The steam evaporator 1 is vapor boiler, and the water vapour pressure of vapor boiler is in 0.09MPa-0.4MPa
Between.
The operating temperature of the first evaporation-rectifying coupled column 2 is between 60 DEG C -90 DEG C, and operating pressure is in 50kPa-
Between 90kPa.
The operating temperature of the second evaporation-rectifying coupled column 5 is between 60 DEG C -80 DEG C, and operating pressure is in 50kPa-
Between 90kPa.
The operating temperature of the negative pressure rectifying column 3 is between 60 DEG C -80 DEG C, and operating pressure is between 50kPa-90kPa.
The steam evacuates between the admission pressure 50kPa-60kPa of compressor set 4, and pressure at expulsion is in 0.09-
Between 0.2MPa.
In the specific implementation, the vapor exhaust port and vapor return of the steam evaporator divide the present invention
It is not connect with the first steam-gas inlet of the first evaporation-rectifying coupled column, the first vapor outlet port, so that high-temperature vapor is sent into the
One evaporation-rectifying coupled column is for heating material liquid and rectifying column phegma；The of first evaporation-rectifying combination top end
One vapor outlet port is connect with the first steam-gas inlet of steam-gas inlet of negative pressure rectifying column bottom, to make the first evaporation-rectifying combine
The steam that column evaporation generates passes through rectifying column from bottom to top from rectifying column bottom；The second steam-gas inlet at the top of negative pressure rectifying column with
Steam evacuation is connect with the import of compressor set, and negative pressure in rectifying column is maintained to make the steam in rectifying column be extracted；Steam
Evacuation is connect with the outlet of compressor set with the third steam-gas inlet in the middle part of the second evaporation-rectifying coupled column, for use in rectifying
The negative pressure evaporation of column bottom phegma；The second vapor outlet port at the top of second evaporation-rectifying coupled column and negative pressure rectifying column bottom
The first steam-gas inlet connection, to make evaporation steam pass through rectifying column from bottom to top.
The connection type of the fluid pipeline is：First metering pump connects with first at the top of the first evaporation-rectifying coupled column
Mouth connection, to inject the material liquid to be separated of regulation flow to the first evaporation-rectifying coupled column；Second metering pump respectively with
The second interface at the middle part of the first hair-rectifying coupled column is connected with the 4th interface of rectifying column bottom, so as to by rectifying column base portion
Withdrawing fluid is divided to be sent into the first evaporation-rectifying coupled column；The third of third metering pump and the first evaporation-rectifying coupled column base portion
Interface connects, for extracting heavy constituent product；The 5th interface at the top of rectifying column combines the of column bottom with the second evaporation-rectifying
The 4th metering pump is connected between six interfaces；4th interface of rectifying column bottom combines the 7th of tower bottom with the second evaporation-rectifying
The 4th metering pump is connected between interface, the liquid foldback for the second evaporation-rectifying to be combined to tower bottom enters negative pressure rectifying column；The
7th interface of two evaporations-rectifying combination column bottom is connect with the 5th metering pump, for extracting light component product；Illustrate metering pump
Upward arrow indicates the flow direction of liquid.
The present invention and its embodiments have been described above, this description is no restricted, shown in attached drawing
Only one of embodiments of the present invention, actual structure is not limited to this.All in all if the ordinary skill of this field
Personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution phase
As frame mode and embodiment, be within the scope of protection of the invention.
Claims (9)
1. separator is combined in a kind of negative pressure evaporation rectifying, it is characterised in that：It is steamed including steam evaporator (1), the first negative pressure
Hair-rectifying coupled column (2), negative pressure rectifying column (3), steam evacuate and compressor set (4), the second negative pressure evaporation-rectifying coupled column
(5), pipeline and flowmeter pass through pipeline between the steam evaporator (1) and the first negative pressure evaporation-rectifying coupled column (2)
Connection, is connected between the first negative pressure evaporation-rectifying coupled column (2) and negative pressure rectifying column (3) by pipeline, the negative pressure essence
Fractional distillation column (3) and steam evacuation are connect between compressor set (4) by pipeline, and the steam evacuates and compressor set (4) and the
It is connected by pipeline between two negative pressure evaporations-rectifying coupled column (5).
2. separator is combined in a kind of negative pressure evaporation rectifying according to claim 1, it is characterised in that：First negative pressure
Evaporation-rectifying coupled column (2) is equipped with exhaust port (61), vapor return (62), the first vapor outlet port (63), first
Interface (71), second interface (72) and third interface (73), the negative pressure rectifying column (3) be equipped with the first steam-gas inlet (64),
Second steam-gas inlet (65), the 4th interface (74) and the 5th interface (75), on the second negative pressure evaporation-rectifying coupled column (5)
Further include first-class equipped with third steam-gas inlet (66), the second vapor outlet port (67), the 6th interface (76) and the 7th interface (77)
Gauge (81), second flowmeter (82), third flowmeter (83), the 4th flowmeter (84) and the 5th flowmeter (85).
3. separator is combined in a kind of negative pressure evaporation rectifying according to claim 1, it is characterised in that：First negative pressure
On evaporation-rectifying coupled column (2) and the first negative pressure evaporation-rectifying coupled column (2) include the first head cover (21), cylinder (22),
Heat transfer sheet (23), evaporation tubulation (24), first base (25), the first water dispenser (26) and the first filler (27).
4. separator is combined in a kind of negative pressure evaporation rectifying according to claim 1, it is characterised in that：The negative pressure rectifying
Column (3) includes the second head cover (31), liquid distributor (32), rectifying column cylinder (33), the second filler (34) and pedestal (35).
5. separator is combined in a kind of negative pressure evaporation rectifying according to claim 1, it is characterised in that：The vapor hair
Raw device (1) is vapor boiler, and the water vapour pressure of vapor boiler is between 0.09MPa-0.4MPa.
6. separator is combined in a kind of negative pressure evaporation rectifying according to claim 1, it is characterised in that：Described first steams
The operating temperature of hair-rectifying coupled column (2) is between 60 DEG C -90 DEG C, and operating pressure is between 50kPa-90kPa.
7. separator is combined in a kind of negative pressure evaporation rectifying according to claim 1, it is characterised in that：Described second steams
The operating temperature of hair-rectifying coupled column (5) is between 60 DEG C -80 DEG C, and operating pressure is between 50kPa-90kPa.
8. separator is combined in a kind of negative pressure evaporation rectifying according to claim 1, it is characterised in that：The negative pressure rectifying
The operating temperature of column (3) is between 60 DEG C -80 DEG C, and operating pressure is between 50kPa-90kPa.
9. separator is combined in a kind of negative pressure evaporation rectifying according to claim 1, it is characterised in that：The steam evacuates
Between the admission pressure 50kPa-60kPa of compressor set (4), pressure at expulsion is between 0.09-0.2MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810419349.7A CN108579115A (en) | 2018-05-04 | 2018-05-04 | A kind of negative pressure evaporation rectifying combination separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810419349.7A CN108579115A (en) | 2018-05-04 | 2018-05-04 | A kind of negative pressure evaporation rectifying combination separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108579115A true CN108579115A (en) | 2018-09-28 |
Family
ID=63620801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810419349.7A Pending CN108579115A (en) | 2018-05-04 | 2018-05-04 | A kind of negative pressure evaporation rectifying combination separator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111265902A (en) * | 2020-03-09 | 2020-06-12 | 内蒙古兰格生物科技有限公司 | Continuous rectification device |
| CN112807730A (en) * | 2020-12-28 | 2021-05-18 | 绵阳科大久创科技有限公司 | Multi-column series negative pressure rectifying device |
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| CN106492491A (en) * | 2016-10-25 | 2017-03-15 | 中原工学院 | A kind of driving heat source latent heat indirect cyclic process utilizes type multistage evaporation enrichment facility |
| CN107098413A (en) * | 2017-05-16 | 2017-08-29 | 中国工程物理研究院材料研究所 | A kind of rectification process system and its implementation for preparing the low deuterium-oxide of a variety of concentration |
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Patent Citations (8)
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| US20100288623A1 (en) * | 2007-12-20 | 2010-11-18 | Valery Grigorievich Tsegelsky | Method and device for producing vacuum in a petroleum distillation column |
| CN103539299A (en) * | 2012-07-10 | 2014-01-29 | 南京大学 | Process for recycling wastewater containing low boiling-point organism such as formaldehyde and high-concentration inorganic salt |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111265902A (en) * | 2020-03-09 | 2020-06-12 | 内蒙古兰格生物科技有限公司 | Continuous rectification device |
| CN112807730A (en) * | 2020-12-28 | 2021-05-18 | 绵阳科大久创科技有限公司 | Multi-column series negative pressure rectifying device |
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