CN206414937U - Circulating condensing formula acetylene desorption system - Google Patents
Circulating condensing formula acetylene desorption system Download PDFInfo
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- CN206414937U CN206414937U CN201621451415.1U CN201621451415U CN206414937U CN 206414937 U CN206414937 U CN 206414937U CN 201621451415 U CN201621451415 U CN 201621451415U CN 206414937 U CN206414937 U CN 206414937U
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Abstract
A kind of circulating condensing formula acetylene desorption system, including heater, desorber, condensing unit, exhaust gas processing device；It is provided with above desorption gaseous phase outlet in the desorber tower with the shrouding for rising gas cap, the shrouding with gas cap includes shrouding bottom plate, one end of the close desorption gaseous phase outlet of shrouding bottom plate is connected with tower wall, the one end of shrouding bottom plate away from desorption gaseous phase outlet sets baffle plate, baffle plate is not connected with tower wall, through hole is opened up in the center of shrouding bottom plate, gear cylinder is fixed with the edge of through hole, the passage that supply passes through is provided with the side wall of gear cylinder, at the top of gear cylinder equipped with gear liquid gas cap, the diameter for keeping off liquid gas cap is more than the diameter of second gear cylinder, so as to which the lower section of shrouding bottom plate will not be entered along passage from the liquid phase under the marginal flow of gear liquid gas cap；The shrouding with liter gas cap is provided with the utility model, it is to avoid the problem of understanding inspiratory phase entrainment liquid phase, while improving desorber separating effect by increasing condensed in two stages device.
Description
Technical field
The utility model is related to a kind of acetylene desorption system, more particularly to a kind of circulating condensing formula acetylene desorption system.
Background technology
In synthetic reaction, the conversion ratio of acetylene only has 10% or so, and 90% acetylene is recycled, but the second recycled
Contain a small amount of nitrogen, carbon dioxide in alkynes, these gases can be enriched with systems, concentration meeting more and more higher, so must
This portion gas must be removed.
Using the different principle of solubility of the gas with various in same solvent, with acetic acid, vinyl acetate mixed liquor
Make the absorbing liquid of acetylene, in acetylene absorption to acetic acid, vinyl acetate mixed liquor in absorption tower, the less nitrogen of solubility,
Carbon dioxide is vented at the top of absorption tower.The acetic acid of acetylene, vinyl acetate mixed liquor is absorbed to be sent in desorber again,
Acetylene is desorbed into re-using.
Former desorber inferior separating effect, entrained liquid is serious, and the acetylene gas band acetic acid that desorber comes out is serious.
The content of the invention
In view of this, for above-mentioned deficiency, propose that one kind can improve desorber separating effect, entrained liquid can be solved again
Circulating condensing formula acetylene desorption system.
A kind of circulating condensing formula acetylene desorption system, including heater, desorber, condensing unit, exhaust gas processing device；
The desorber is divided into bottom of towe, tower, tower top, and tower middle position has installed staggered from top to bottom in feed(raw material)inlet, tower be oriented to
Sieve plate；The linde sieve tray is arranged horizontally in tower, and one end of linde sieve tray and the tower wall of desorber are connected, and are oriented to sieve
The other end of plate and the tower wall of desorber are not connected to, and are provided with seal pot in the one end being connected with tower wall, what is be connected with seal pot is
The upward bubble promoting device of triangular shape, be connected with bubble promoting device for column plate, several columns are opened up on column plate and are interlocked point
The pilot hole and sieve aperture of cloth, pilot hole and sieve aperture mutually pass through for stripping gas, with the unconnected linde sieve tray of the tower wall of desorber
One end down-flow plate is set, down-flow plate is connected with column plate, and the down-flow plate is a vertical plate, so that down-flow plate and desorber
A upper and lower opening, the passage that feed flow mutually flows from top to bottom are formed between tower wall, down-flow plate upper end is higher by column plate, to store up
Deposit a certain amount of liquid phase；Position is additionally provided with desorption gaseous phase outlet, the stripping gas in the tower above the feed(raw material)inlet of desorber
Mutually outlet is opened in the corresponding tower wall of desorber respectively with feed(raw material)inlet；Band, which is provided with, in the top of desorption gaseous phase outlet rises gas
The shrouding of cap, the shrouding that the band rises gas cap includes shrouding bottom plate, one end of the close desorption gaseous phase outlet of shrouding bottom plate and tower
Wall is connected, and the one end of shrouding bottom plate away from desorption gaseous phase outlet sets baffle plate, and baffle plate is not connected with tower wall, so that baffle plate and tower wall
Between leave the gap that feed flow phase heavy constituent is flowed down, baffle plate is vertical with shrouding bottom plate, opens up logical in the center of shrouding bottom plate
Hole, is fixed with gear cylinder at the edge of through hole, and gear cylinder is hollow cylinder, and be provided with that supply passes through on the side wall of gear cylinder is logical
Stomata, at the top of gear cylinder equipped with gear liquid gas cap, the gear liquid gas cap is the low cone shell in middle high, edge, keeps off liquid gas cap
Diameter be more than gear cylinder diameter so that from gear liquid gas cap marginal flow under liquid phase will not along passage enter shrouding bottom plate
Lower section；Desorber bottom of towe is provided with tower reactor liquid-phase outlet；The condensing unit include first order condenser, second level condenser,
Third level condenser, condensing unit is used for the gas-liquid separation for the gas phase gas that desorber is desorbed, the first condenser liquid-phase outlet
It is connected with the liquid phase entrance of desorber, the first condenser inlet is connected with the desorption gaseous phase outlet of desorber by pipeline, and first is cold
Condenser gaseous phase outlet is connected with the second condenser gas phase entrance, the liquid phase entrance phase of the second condenser liquid-phase outlet and desorber
Even, the second condenser gaseous phase outlet is connected with the 3rd condenser upper inlet, and outlet and the liquid phase of desorber enter under the 3rd condenser
Mouth is connected, and the 3rd condenser upper outlet port is connected with discharge groove；The exhaust gas processing device includes gas phase adsorption groove, and the gas phase is inhaled
Groove is received with the top gaseous phase outlet of desorber to be connected；The heater includes heat exchanger, and the heat exchanger is provided with steam
Entrance, steam condensate (SC) outlet, the material inlet of heat exchanger, the liquid-phase outlet of heat exchanger, the tower reactor liquid-phase outlet with
The material inlet of heat exchanger is connected, and the material outlet of the heat exchanger is connected with bottom of towe gas phase entrance so that exchanged heat
Gaseous phase materials are desorbed again into desorber.
It is preferred that, the second level condenser be horizontal condenser, the third level condenser be cyclone separator.
It is preferred that, the heat exchanger be reboiler.
The shrouding with liter gas cap is provided with the utility model, it is to avoid the problem of understanding inspiratory phase entrainment liquid phase, led to simultaneously
Cross increase condensed in two stages device and improve desorber separating effect.
Brief description of the drawings
Fig. 1 is the circulating condensing formula acetylene desorption system equipment connection diagram.
Fig. 2 is linde sieve tray schematic diagram in the desorber.
Fig. 3 is linde sieve tray top view in the desorber.
Fig. 4 is the structural representation with the shrouding for rising gas cap in the desorber.
In figure：Condensing unit 10, first order condenser 11, the first condenser inlet 111, the first condenser gaseous phase outlet
112nd, the first condenser liquid-phase outlet 113, the liquid phase entrance 114 of desorber, second level condenser 12, the second condenser gas phase enter
Mouthful the 121, second condenser gaseous phase outlet 122, the second condenser liquid-phase outlet 123, third level condenser 13, on the 3rd condenser
Outlet 133, removal slot 134, exhaust gas processing device 20, heating under import 131, the 3rd condenser upper outlet port 132, the 3rd condenser
Device 30, heat exchanger 31, steam inlet 32, steam condensate (SC) outlet 33, the liquid-phase outlet 34 of heat exchanger, heat exchanger
Material inlet 35, desorber 40, feed(raw material)inlet 41, linde sieve tray 42, seal pot 421, bubble promoting device 422, pilot hole 423,
Column plate 424, down-flow plate 425, sieve aperture 426, desorption gaseous phase outlet 43, tower reactor liquid-phase outlet 44, the shrouding 45 with liter gas cap, ventilation
Hole 451, gear liquid gas cap 452, shrouding bottom plate 453, baffle plate 454, gear cylinder 455, bottom of towe gas phase entrance 46, top gaseous phase outlet 47.
Embodiment
In order to illustrate more clearly of the technical scheme of the utility model embodiment, it will use below required in embodiment
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are some embodiments of the present utility model, for this
For the those of ordinary skill of field, on the premise of not paying creative work, it can also obtain other according to these accompanying drawings
Accompanying drawing.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the utility model embodiment provides a kind of circulating condensing formula acetylene desorption system,
Including heater 30, desorber 40, condensing unit 10, exhaust gas processing device 20；40 points of desorber be bottom of towe, tower in, tower top,
Tower middle position has installed in feed(raw material)inlet 41, tower staggered linde sieve tray 42 from top to bottom；Linde sieve tray 42 is in the horizontal direction
It is arranged in tower, one end of linde sieve tray 42 is connected with the tower wall of desorber 40, the other end and the desorber 40 of linde sieve tray 42
Tower wall be not connected to, the one end being connected with tower wall be provided with seal pot 421, dashed forward upwards for triangular shape with what seal pot 421 was connected
The bubble promoting device 422 risen, be connected with bubble promoting device 422 for column plate 424, several columns are opened up on pedal 424 and are interlocked point
The pilot hole 423 and sieve aperture 426 of cloth, pilot hole 423 and sieve aperture 426 mutually pass through for stripping gas, while pilot hole 423 also promotes liquid
Opposite following down-flow plates 425 are flowed, and down-flow plate is being set with one end of the unconnected linde sieve tray of the tower wall of desorber 40 42
425, down-flow plate 425 is connected with column plate 424, and down-flow plate 425 is a vertical plate, so that the tower of down-flow plate 425 and desorber 40
A upper and lower opening, the passage that feed flow mutually flows from top to bottom are formed between wall, the upper end of down-flow plate 425 is higher by column plate 424, used
To store a certain amount of liquid phase；Position is additionally provided with desorption gaseous phase outlet 43 in the tower of the top of feed(raw material)inlet 41 of desorber 40,
Desorption gaseous phase outlet 43 is opened in the relative tower wall of desorber 40 respectively with feed(raw material)inlet 41；In desorption gaseous phase outlet 43
Top is provided with the shrouding 45 for rising gas cap, includes shrouding bottom plate 453, the close solution of shrouding bottom plate 453 with the shrouding 45 for rising gas cap
One end of inspiratory phase outlet 43 is connected with tower wall, and the one end of shrouding bottom plate 453 away from desorption gaseous phase outlet 43 sets baffle plate 454,
Baffle plate 454 is not connected with tower wall, so as to leave the gap that feed flow phase heavy constituent is flowed down between baffle plate 454 and tower wall, baffle plate 454 with
Shrouding bottom plate 453 is vertical, and through hole is opened up in the center of shrouding bottom plate 453, and gear cylinder 455 is fixed with the edge of through hole,
Gear cylinder 455 is hollow cylinder, the passage 451 that supply passes through is provided with the side wall of gear cylinder 455, on the top of gear cylinder 455
Portion is the low cone shell in middle high, edge equipped with gear liquid gas cap 452, gear liquid gas cap 452, and the diameter of gear liquid gas cap 452 is more than
The diameter of second gear cylinder 455, so as to which from the liquid phase under the marginal flow of gear liquid gas cap 452 shrouding will not be entered along passage 451
The lower section of bottom plate 453；The bottom of towe of desorber 40 is provided with tower reactor liquid-phase outlet 44；
Condensing unit 10 includes first order condenser 11, second level condenser 12, third level condenser 13, condensing unit 10
The gas-liquid separation of the gas phase gas desorbed for desorber 40, the liquid phase of the first condenser liquid-phase outlet 113 and desorber enters
Mouth 114 is connected, and the first condenser inlet 111 is connected with the desorption gaseous phase outlet 43 of desorber 40 by pipeline, the first condenser gas
Mutually outlet 112 is connected with the second condenser gas phase entrance 121, the liquid phase entrance of the second condenser liquid-phase outlet 123 and desorber
114 be connected, the second condenser gaseous phase outlet 122 is connected with the 3rd condenser upper inlet 131, under the 3rd condenser outlet 133 and
The liquid phase entrance 114 of desorber is connected, and the 3rd condenser upper outlet port 132 is connected with removal slot 134；
Exhaust gas processing device 20 includes gas phase adsorption groove, and the top gaseous phase of gas phase adsorption groove and desorber 40 exports 47 phases
Even；
Heater 30 includes heat exchanger 31, and heat exchanger 31 is provided with steam inlet 32, steam condensate (SC) outlet 33, warm
The material inlet 35 of exchanger, the liquid-phase outlet 34 of heat exchanger, the material inlet 35 of tower reactor liquid-phase outlet 44 and heat exchanger
It is connected, the material outlet of heat exchanger is connected with bottom of towe gas phase entrance 46 so that the gaseous phase materials exchanged heat enter in desorber,
On the one hand heat is provided for desorber 40, on the other hand can desorbed again.
Specifically so that acetylene is desorbed as an example, the acetic acid of dissolved acetylene, vinyl acetate mixed liquor are from the feed(raw material)inlet 41 of desorber 40
Add, the gas phase with rising on column plate 424 carries out heat exchange, and acetylene gas is desorbed, and acetic acid, vinyl acetate liquid flow to tower
Bottom, after bottom of towe outflow, into reboiler heating, part acetic acid, vinyl acetate gasification are back in tower and acetic acid, vinyl acetate again
Mixed liquor carries out heat exchange, unvaporized out to pass through reboiler, iterative cycles from bottom of towe.
Above-mentioned acetylene gas constantly rises after desorbing, and the temperature in desorber 40 in tower is high, tower top, column bottom temperature
Low, light component acetylene is risen by the sieve aperture 426 of linde sieve tray 42 to tower top direction, and heavy constituent liquefaction by down-flow plate 425,
Baffle plate 454, is successively flowed down from tower wall gap location, because the liquid phase in tower on the effect linde sieve tray 42 of gaseous pressure can not be from sieve
Flowed out at hole 426, but at desorption gaseous phase outlet 43, because gas phase acetylene is discharged from desorption gaseous phase outlet 43, cause this in tower
The pressure at place is die-offed, and the liquid phase on the linde sieve tray 42 of desorption gaseous phase outlet 43 top is just flowed down from sieve aperture 426, cause liquid phase with
Gas phase acetylene convection current so that carry substantial amounts of liquid-phase acetic acid in the gas phase acetylene of discharge secretly, and the two reaction causes autohemagglutination, autohemagglutination
After be difficult to separate, have impact on the purity of acetylene, be based on this reason with the shrouding 45 for rising gas cap, on the one hand can allow gas phase edge
Passage 451 to pass through, sieve aperture 426, pilot hole 423 are no longer set with the shrouding 45 for rising gas cap, liquid phase can only be by gear liquid gas cap
After 452 water conservancy diversion, flowed down between baffle plate 454 and tower wall, so that liquid phase is avoided desorbing gaseous phase outlet 43, it is therefore prevented that by gas phase band
Go out.
Feed(raw material)inlet 41 can also be connected by a transfer tank with position in the tower of desorber 40 in the system, this transfer tank
Interior desorption gas phase, liquid phase enter in tower from two entrances up and down respectively, further desorption gas phase and heavy constituent liquid phase.
Further, second level condenser 12 is horizontal condenser, and third level condenser 13 is cyclone separator.
Further, heat exchanger 31 is reboiler.
Module or unit in the utility model embodiment device can according to actual needs be merged, divide and deleted
Subtract.
Above disclosed is only the utility model preferred embodiment, can not limit the utility model with this certainly
Interest field, one of ordinary skill in the art will appreciate that realize all or part of flow of above-described embodiment, and according to this reality
The equivalent variations made with new claim, still fall within the scope that utility model is covered.
Claims (3)
1. a kind of circulating condensing formula acetylene desorption system, it is characterised in that：Including heater, desorber, condensing unit, tail gas
Processing unit；The desorber is divided into bottom of towe, tower, tower top, and tower middle position has installed in feed(raw material)inlet, tower staggered row from top to bottom
The linde sieve tray of row；The linde sieve tray is arranged horizontally in tower, and one end of linde sieve tray and the tower wall of desorber connect
Connect, the other end of linde sieve tray and the tower wall of desorber are not connected to, seal pot is provided with the one end being connected with tower wall, with seal pot
The connected bubble promoting device upward for triangular shape, be connected with bubble promoting device for column plate, open up some on column plate
The pilot hole and sieve aperture being interspersed are arranged, pilot hole mutually passes through with sieve aperture for stripping gas, unconnected with the tower wall of desorber
One end of linde sieve tray sets down-flow plate, and down-flow plate be connected with column plate, and the down-flow plate is a vertical plate so that down-flow plate and
A upper and lower opening, the passage that feed flow mutually flows from top to bottom are formed between the tower wall of desorber, down-flow plate upper end is higher by tower
Plate, to store a certain amount of liquid phase；Position is additionally provided with desorption gaseous phase outlet, institute in the tower above the feed(raw material)inlet of desorber
Desorption gaseous phase outlet is stated to be opened in respectively in the corresponding tower wall of desorber with feed(raw material)inlet；Set above desorption gaseous phase outlet
Have with the shrouding for rising gas cap, the shrouding that the band rises gas cap includes shrouding bottom plate, the close desorption gaseous phase outlet of shrouding bottom plate
One end is connected with tower wall, and the one end of shrouding bottom plate away from desorption gaseous phase outlet sets baffle plate, and baffle plate is not connected with tower wall, so that gear
The gap that feed flow phase heavy constituent is flowed down is left between plate and tower wall, baffle plate is vertical with shrouding bottom plate, in the centre bit of shrouding bottom plate
Put and open up through hole, gear cylinder is fixed with the edge of through hole, gear cylinder is hollow cylinder, and supply phase is provided with the side wall of gear cylinder
The passage passed through, at the top of gear cylinder equipped with gear liquid gas cap, the gear liquid gas cap is the low cone shell in middle high, edge,
The diameter for keeping off liquid gas cap is more than the diameter of gear cylinder, so as to will not enter from the liquid phase under the marginal flow of gear liquid gas cap along passage
The lower section of shrouding bottom plate；Desorber bottom of towe is provided with tower reactor liquid-phase outlet；The condensing unit includes first order condenser, the second level
Condenser, third level condenser, condensing unit are used for the gas-liquid separation for the gas phase gas that desorber is desorbed, the first condenser liquid
Mutually outlet is connected with the liquid phase entrance of desorber, and the first condenser inlet is connected with the desorption gaseous phase outlet of desorber by pipeline,
First condenser gaseous phase outlet is connected with the second condenser gas phase entrance, and the liquid phase of the second condenser liquid-phase outlet and desorber enters
Mouth is connected, and the second condenser gaseous phase outlet is connected with the 3rd condenser upper inlet, outlet and the liquid of desorber under the 3rd condenser
Phase entrance is connected, and the 3rd condenser upper outlet port is connected with discharge groove；The exhaust gas processing device includes gas phase adsorption groove, the gas
Groove is mutually absorbed with the top gaseous phase outlet of desorber to be connected；The heater includes heat exchanger, and the heat exchanger is provided with
Steam inlet, steam condensate (SC) outlet, the material inlet of heat exchanger, the liquid-phase outlet of heat exchanger, the tower reactor liquid phase go out
Mouth is connected with the material inlet of heat exchanger, and the material outlet of the heat exchanger is connected with bottom of towe gas phase entrance so that changed
The gaseous phase materials of heat are desorbed again into desorber.
2. circulating condensing formula acetylene desorption system as claimed in claim 1, it is characterised in that：The second level condenser is horizontal
Condenser, the third level condenser is cyclone separator.
3. circulating condensing formula acetylene desorption system as claimed in claim 1 or 2, it is characterised in that：The heat exchanger is to boil again
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621451415.1U CN206414937U (en) | 2016-12-28 | 2016-12-28 | Circulating condensing formula acetylene desorption system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621451415.1U CN206414937U (en) | 2016-12-28 | 2016-12-28 | Circulating condensing formula acetylene desorption system |
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| Publication Number | Publication Date |
|---|---|
| CN206414937U true CN206414937U (en) | 2017-08-18 |
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ID=59576819
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621451415.1U Active CN206414937U (en) | 2016-12-28 | 2016-12-28 | Circulating condensing formula acetylene desorption system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114345247A (en) * | 2021-12-10 | 2022-04-15 | 江苏碳和环境科技有限公司 | Packed tower |
-
2016
- 2016-12-28 CN CN201621451415.1U patent/CN206414937U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114345247A (en) * | 2021-12-10 | 2022-04-15 | 江苏碳和环境科技有限公司 | Packed tower |
| CN114345247B (en) * | 2021-12-10 | 2023-12-05 | 江苏碳和环境科技有限公司 | Packing tower |
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