CN204485348U - A kind of thermal coupling is sprayed and flows tower - Google Patents
A kind of thermal coupling is sprayed and flows tower Download PDFInfo
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- CN204485348U CN204485348U CN201420863590.6U CN201420863590U CN204485348U CN 204485348 U CN204485348 U CN 204485348U CN 201420863590 U CN201420863590 U CN 201420863590U CN 204485348 U CN204485348 U CN 204485348U
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Abstract
The utility model discloses a kind of thermal coupling spray and flow tower, comprise tower body and the continuous mass transfer tower board of multilayer, tower body comprises inner tower and outside tower, and every layer of continuous mass transfer tower board comprises the column plate, the calotte that are provided with air rising hole and fall liquid system; Outer wall isolation by interior tower between described inner tower and outside tower forms rectifying section and stripping section.The temperature difference that the utility model product effectively make use of stripping section and rectifying section is carried out heat exchange, is reclaimed heat at Nei Tata wall place, increase heat exchange area, effectively reduce heat dissipation capacity, enhance the heat transmission of stripping section to rectifying section, thus reach energy-saving and cost-reducing object, therefore there is very large economic benefit and application prospect; Meanwhile, because rectifying section and stripping section are concentric cylindrical, greatly can reduce tower height, be easy to installation and maintenance and production operation.
Description
Technical field
The utility model relates to a kind of gas-liquid mass transfer (contact) equipment, and especially a kind of thermal coupling is sprayed and flows tower, for the mass transport process in the fields such as chemical industry, oil refining, petrochemical industry, environmental protection.
Background technology
In petrochemical process, distillation process is one of unit operations be most widely used, and is also the operating unit that in petrochemical industry, energy consumption is maximum.In traditional rectifying column, introduce the heat of rectifying column reboiler by being discharged by condenser after rectifying column, most energy loss is in the pressure drop of tower with by the temperature difference of heat exchanger, and only have portion of energy to be used to reduce the moisture in the soil of rectifying column product, its thermodynamic efficiency generally only has 5 ~ 10%, and energy loss is very huge.Therefore, develop and use new energy-saving equipments can bring huge economic benefit and social benefit.
The internal thermal coupled technology of rectifying column is a kind of ideal energy saving method.From 20 end of the centurys, the research of internal thermally coupled distillation column is carried out gradually and gos deep into.2005, Britain develops a kind of column plate internal heat transfer formula internal thermally coupled distillation column, European Union develops a kind of heat exchange screen (Heat transfer panel, be called for short HTP) formula internal thermally coupled distillation column, but, because the internal thermal coupled heat transfer area of tower is less, thus do not obtain application progress.From nineteen ninety-five to 2007 year, Japan successively develops concentric circles pillar and many concentric columns cluster thermal coupled rectifying tower; But, concentric circles pillar thermal coupled rectifying tower structure is comparatively simple, but still the problem that unresolved original internal thermal coupled heat transfer area is little, although the internal thermal coupled destilling tower of many concentric columns cluster has larger heat transfer area, but complex structure, cost is very high, is difficult to apply in practice.
2009, Chinese patent CN200910087709.9 devises a kind of internal thermal coupled destilling tower, the thermal coupling between rectifying section and stripping section is realized by three external heat exchanger, external heat exchanger carries out the exchange heat between rectifying section top and stripping section top, thus achieves operating without outside backheat of internal thermal coupled destilling tower; But this internal thermal coupled destilling tower includes four external heat exchanger and two tower bodies, and equipment volume is large, cost is high.
Chinese patent CN201010195101.0 discloses a kind of liquid parallel flow combination tower, and achieving liquid on column plate is equidirectional flowing, adds effective mass transfer area.As shown in Figure 1, liquid parallel flow combination tower comprises cylindrical tower body 1 and the continuous mass transfer tower board of multilayer be arranged in tower body 1 to its structure.Tower body 1 is divided into cylindrical interior tower 8 and the outer tower 9 of annular, and interior tower 8 is sleeved in outer tower 9, and interior tower structure as shown in Figure 2; Column plate I in interior tower is corresponding to interior tower cross section, and be arranged in parallel, and Wai Tazhong is also arranged with the annular column plate II corresponding to outer tower cross section in parallel.Outside the column plate of tower 9 and the column plate of Nei Ta 8 are provided with air rising hole, above air rising hole, calotte is set.Be respectively arranged with in described inner tower and outside tower make the liquid on every layer of column plate be equidirectional flowing liquid system is fallen.
The patented product eliminates the liquid holding zone on traditional column plate, adds effective mass transfer area, increases disposal ability, improves the mass-transfer efficiency of column plate.But the heat of this liquid parallel flow combination tower provides by the reboiler at the bottom of tower, and energy consumption is also higher, and heat utilization ratio is low, and in order to reach good rectification effect, tower height is usually higher, and installation difficulty is large, not easily Maintenance and Repair.
Utility model content
The utility model technical issues that need to address are to provide the thermal coupling that a kind of mass transfer area is large, plate efficiency is high, heat utilization ratio is high, energy consumption is little and spray and flow tower.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of thermal coupling is sprayed and flows tower, and comprise tower body and the continuous mass transfer tower board of multilayer, tower body comprises inner tower and outside tower, and every layer of continuous mass transfer tower board comprises the column plate, the calotte that are provided with air rising hole and fall liquid system; Outer wall isolation by interior tower between described inner tower and outside tower forms rectifying section and stripping section; When interior tower is rectifying section, outer tower is stripping section; When interior tower is stripping section, outer tower is rectifying section; Be provided with the reboiler be connected with stripping section at the bottom of described tower, tower top is provided with the condenser be connected with rectifying section;
Stripping section top is feed(raw material)inlet, and the liquid-phase outlet bottom stripping section is connected with reboiler, and the liquid outlet of reboiler is communicated with heavy constituent extraction pipeline, and the gas vent of reboiler is communicated with the gas access bottom stripping section; The outlet of stripping section top gas phase is connected with the gas access bottom rectifying section by pipeline, the gas vent at rectifying section top is connected with condenser, the outlet of condenser is directly connected with light component extraction pipeline on the one hand, is connected on the other hand by the liquid inlet of reflux pump with rectifying section top; Liquid outlet bottom rectifying section is by the feed(raw material)inlet at pipeline communication stripping section top.
The further improvement of technical solutions of the utility model is: the outlet of described condenser is communicated with fluid reservoir.
Owing to have employed technique scheme, the technological progress that the utility model obtains is:
The utility model provides a kind of thermal coupling and sprays and flow tower, rectifying section and stripping section are set to the form of the outer tower suit of interior tower by this tower, the temperature difference of stripping section and rectifying section is effectively utilized to carry out heat exchange at Nei Tata wall place, reclaim heat, increase heat exchange area, effectively reduce heat dissipation capacity, enhance the heat transmission of stripping section to rectifying section, thus reach energy-saving and cost-reducing object.Can save energy more than 20% compared with the rectifier unit energy consumption of routine, greatly can save operating cost, therefore there is very large economic benefit and application prospect.Meanwhile, because rectifying section and stripping section are concentric cylindrical, greatly can reduce tower height, be easy to installation and maintenance and production operation.
The utility model tower body adopts the structure of inner-outer sleeve tower, by the setting of external pipe, by material liquid by stripping section its top feed, after mass transfer heat exchange, arrive the liquid phase extraction after reboiler heats further bottom stripping section, in reboiler, isolated gas uses as the gas phase of stripping section; Arriving the gas phase at stripping section top is admitted to bottom rectifying section, and after multilayer column plate mass-and heat-transfer, the purity arriving light component in the gas phase at rectifying section top is very high, after condenser condenses, obtain highly purified light component; Wherein a part of high-purity light component reenters rectifying column top as liquid phase under the effect of reflux pump, gets rid of and come back to the backflow liquid phase of stripping section top as stripping section through pipeline after mass-and heat-transfer at the bottom of rectifying column.So just achieve the rectifying of material liquid, heavy constituent is separated with the column plate mass transfer of light component through sufficient amount, and at the bottom of overhead extraction light component and tower, the purity of extraction heavy constituent is all very high, good separating effect.
Accompanying drawing explanation
Fig. 1 is liquid parallel flow combination tower structural representation disclosed in Chinese patent CN201010195101.0;
Fig. 2 is the interior tower structure schematic diagram in Chinese patent CN201010195101.0 liquid parallel flow combination tower;
Fig. 3 be in the utility model tower be rectifying section, the flow direction of material schematic diagram of outer tower when being stripping section;
Fig. 4 be in the utility model tower be stripping section, the flow direction of material schematic diagram of outer tower when being rectifying section;
Wherein, 1, tower body, 2, column plate I, 31, down-flow plate I, 32, down-flow plate II, 33, down flow apron, 34, central well down take, 35, liquid outflow channel, 36, middle seal pot, 38, annular seal pot, 39, mozzle, 4, downflow weir, 5, calotte, 6, fall liquid passage, 7, inlet weir, 8, Nei Ta, 9, Wai Ta, 14, reboiler, 15, condenser, 16, fluid reservoir, 17, reflux pump, 18, material liquid input duct, 19, heavy constituent extraction pipeline, 20, light component extraction pipeline.
Filled arrows express liquid in Fig. 3, Fig. 4 flows to, and hollow arrow represents gas flow.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further details:
A kind of thermal coupling is sprayed and flows tower, comprises cylindrical tower body 1; Tower body 1 comprises the outer tower 9 of columniform interior tower 8 and annular, and interior tower 8 is sleeved in outer tower 9; Rectifying section and stripping section is isolated into by the outer wall of interior tower 8 between interior tower 8 and outer tower 9.When within tower 8 be rectifying section time, outer tower 9 is stripping section; When within tower 8 be stripping section time, outer tower 9 is rectifying section.At the bottom of tower, arrange the reboiler 14 that promising tower body provides heat, reboiler 14 is connected with bottom stripping section; The tower top of rectifying section is provided with condenser 15 and reflux pump 17, and the high-pure gas arriving rectifying section tower top is refluxed pump again sends rectifying section back to through condenser condenses, a part of condensate liquid.
The structure of described outer tower 9 is identical with the outer tower structure in Chinese patent CN201010195101.0.Be arranged with the annular column plate of many groups in outer tower 9 in parallel, annular column plate is provided with multiple air rising hole, and calotte 5 is positioned at above air rising hole.Outer tower falls liquid system and comprises the four cover downspouts being surrounded on interior tower outer wall, and outer tower equipartition is four symmetrical mass-transfer zones by this four covers downspout.Often overlap downspout and comprise downflow weir 4, the down-flow plate I 31 of deflector type be arranged in parallel and down-flow plate II 32, the passage formed between down-flow plate I 31 and down-flow plate II 32 is for falling liquid passage 6, and the upper end falling liquid passage 6 is provided with the downflow weir 4 perpendicular to annular column plate; The upper end of down-flow plate I 31 is connected with the downflow weir 4 of another downspout be positioned on the annular column plate of upper strata, its lower end and annular column plate and tower body fixed seal connection; The upper end of down-flow plate II 32 is connected with down-flow plate I 31 lower end of another downspout on the annular column plate of upper strata, is provided with liquid outflow channel 35 between its lower end and annular column plate.
The structure of described interior tower 8 is identical with the interior tower structure in Chinese patent CN201010195101.0.Be arranged with the circular column plate of many groups in interior tower 8 in parallel, circular column plate is provided with multiple air rising hole, and calotte 5 is arranged at above air rising hole.The liquid system of falling of interior tower 8 comprises the central well down take 34, middle seal pot 36, down flow apron 33, mozzle 39 and the annular seal pot 38 that pass through column plate I center; Middle seal pot 36 and central well down take 34 are all arranged to circle, middle seal pot 36 is positioned at the below of central well down take 34, the diameter of central well down take 34 is less than the diameter of middle seal pot 36, the periphery of middle seal pot 36, has been arranged alternately down flow apron 33 and mozzle 39 perpendicular to the top of middle seal pot 36; Mozzle 39 is upper shed type channel-section steel, and the bottom level of mozzle 39 is higher than middle seal pot 36; Central well down take 34 position be positioned at above column plate I is correspondingly provided with central overflow weir; Annular seal pot 38 is positioned at lower one deck column plate circumferentially, in plate; The outlet correspondence of mozzle drops in annular seal pot 38.
Application process of the present utility model is:
(1) when interior tower be rectifying section, outer tower be stripping section time, its material trend as shown in Figure 3:
Material liquid enters stripping section by the feed(raw material)inlet of outer top of tower and moves downward, the gas phase provided by reboiler moves upward by the bottom of tower, the liquid phase declined and the gas phase of rising carry out partial gasification and partial condensation at each block annular column plate place, light component (low-boiling point material) gasifies gradually and enters gas phase, and heavy constituent (high boiling substance) retains in the liquid phase; Through the mass-and heat-transfer of polylith annular column plate, the content arriving heavy constituent in the liquid phase at the bottom of outer tower tower is very high, by the heavy constituent extraction pipeline extraction of tower reactor after reboiler heats further, the gas produced through reboiler to enter the gas access of outer tower bottom through gas vent; And the content arriving light component in the gas phase of outer top of tower is higher, is admitted to the gas access of interior tower bottom through pipeline, carries out rectifying.
In interior tower, gas phase from stripping section moves upward, again through the mass transfer heat exchange of the circular column plate of polylith, the content reaching low-boiling point material in the gas phase of interior top of tower is higher, and the gas vent through interior top of tower enters condenser and carries out condensation, and gained condensate liquid enters fluid reservoir and keeps in; Condensate liquid in fluid reservoir is highly purified light component, part condensate liquid is by entering light component extraction pipeline via pipeline, another part condensate liquid is sent back to interior top of tower under reflux pump effect, as liquid phase to direction motion at the bottom of tower, mass-and heat-transfer is completed with ascending vapor, then flowed out by the liquid outlet of interior tower bottom, again sent back to the feed(raw material)inlet of outer top of tower through pipeline, thus complete mass transfer and the heat transfer of stripping section.
(2) when interior tower be stripping section, outer tower be rectifying section time, its material trend as shown in Figure 4:
Material liquid is entered stripping section by interior top of tower feed(raw material)inlet and is moved downward, the gas phase provided by reboiler moves upward by the bottom of tower, the liquid phase declined and gas phase carry out partial gasification and partial condensation at the circular column plate place of each block, light component (low-boiling point material) gasifies gradually and enters gas phase, and heavy constituent (high boiling substance) retains in the liquid phase; Through the mass-and heat-transfer of the circular column plate of polylith, the content arriving heavy constituent in the liquid phase at the bottom of Nei Tata is very high, by the heavy constituent extraction pipeline extraction of tower reactor after reboiler heats further, the gas produced through reboiler enters the gas access of outer tower bottom through gas vent; And the content arriving light component in the gas phase of interior top of tower is higher, is admitted to the gas access of outer tower bottom through pipeline, carries out rectifying.
Outside in tower, gas phase from stripping section moves upward, again through the mass transfer heat exchange of polylith annular column plate, the content reaching low-boiling point material in the gas phase of outer top of tower is higher, and the gas vent through outer tower portion enters condenser and carries out condensation, and gained condensate liquid enters fluid reservoir and keeps in; Condensate liquid in fluid reservoir is highly purified light component, part condensate liquid enters light component extraction pipeline via pipeline, another part condensate liquid is sent back to outer top of tower under reflux pump effect, as liquid phase to direction motion at the bottom of tower, mass transfer and heat transfer is completed with ascending vapor, then flowed out by the liquid outlet of outer tower bottom, again sent back to the feed(raw material)inlet of interior top of tower through pipeline, thus complete mass transfer and the heat transfer of stripping section.
To be separated dimethyl sulfoxide (DMSO) (DMSO) and water, treat that the material liquid of rectifying is the dimethyl sulfoxide (DMSO)-aqueous mixtures containing dimethyl sulfoxide (DMSO) 79.64wt%, inlet amount is 989.532kg/h, tower top waste water produced quantity is 185.42kg, dimethyl sulfoxide (DMSO) produced quantity at the bottom of tower is 800.52kg, and the dimethyl sulfoxide (DMSO) mass fraction of extraction is 98.23%.In distillation process, the operating pressure of tower is 12kPa, and tower top temperature is 49.46 DEG C, and column bottom temperature is 115.44 DEG C.The utility model thermal coupling is sprayed and is flowed the thermic load of tower, refrigeration duty and is all starkly lower than conventional rectification tower.Compared with conventional rectification tower, the utility model thermal coupling is sprayed and to flow the energy-saving effect of tower very remarkable.
Claims (2)
1. a thermal coupling is sprayed and flows tower, comprise tower body (1) and the continuous mass transfer tower board of multilayer, tower body (1) comprises interior tower (8) and outer tower (9), every layer of continuous mass transfer tower board comprises the column plate, the calotte (5) that are provided with air rising hole and falls liquid system, it is characterized in that: the outer wall isolation by interior tower (8) between described interior tower (8) and outer tower (9) forms rectifying section and stripping section; When interior tower (8) is rectifying section, outer tower (9) is stripping section; When interior tower (8) is for stripping section, outer tower (9) is rectifying section; Be provided with the reboiler (14) be connected with stripping section at the bottom of described tower, tower top is provided with the condenser (15) be connected with rectifying section;
Stripping section top is feed(raw material)inlet, and the liquid-phase outlet bottom stripping section is connected with reboiler (14), and the liquid outlet of reboiler (14) is communicated with heavy constituent extraction pipeline (19), and the gas vent of reboiler (14) is communicated with the gas access bottom stripping section; The outlet of stripping section top gas phase is connected with the gas access bottom rectifying section by pipeline, the gas vent at rectifying section top is connected with condenser (15), the outlet of condenser (15) is directly connected with light component extraction pipeline (20) on the one hand, is connected on the other hand by reflux pump (17) with the liquid inlet at rectifying section top; Liquid outlet bottom rectifying section is by the feed(raw material)inlet at pipeline communication stripping section top.
2. a kind of thermal coupling according to claim 1 is sprayed and flows tower, it is characterized in that: the outlet of described condenser (15) is communicated with fluid reservoir (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420863590.6U CN204485348U (en) | 2014-12-31 | 2014-12-31 | A kind of thermal coupling is sprayed and flows tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420863590.6U CN204485348U (en) | 2014-12-31 | 2014-12-31 | A kind of thermal coupling is sprayed and flows tower |
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| Publication Number | Publication Date |
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| CN204485348U true CN204485348U (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420863590.6U Expired - Fee Related CN204485348U (en) | 2014-12-31 | 2014-12-31 | A kind of thermal coupling is sprayed and flows tower |
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| CN (1) | CN204485348U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112742056A (en) * | 2019-10-31 | 2021-05-04 | 中国石油化工股份有限公司 | Internal energy integrated rectifying device for three-component separation and rectifying method using internal energy integrated rectifying device |
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2014
- 2014-12-31 CN CN201420863590.6U patent/CN204485348U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112742056A (en) * | 2019-10-31 | 2021-05-04 | 中国石油化工股份有限公司 | Internal energy integrated rectifying device for three-component separation and rectifying method using internal energy integrated rectifying device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20181231 |