CN103537110B - Plate-type cyclone composite stripping tower and application thereof - Google Patents
Plate-type cyclone composite stripping tower and application thereof Download PDFInfo
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- CN103537110B CN103537110B CN201310477469.XA CN201310477469A CN103537110B CN 103537110 B CN103537110 B CN 103537110B CN 201310477469 A CN201310477469 A CN 201310477469A CN 103537110 B CN103537110 B CN 103537110B
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Abstract
The invention relates to a plate-type cyclone composite stripping tower. The tower body of the composite stripping tower is a hollow vertical tower device. A tower bottom liquid outlet is communicatively arranged in the tower bottom. A liquid storage section is arranged on the bottom of tower body of a desorption tower. A heating device is arranged in the liquid storage section. A through cyclone section is arranged coaxially in the tower body above the liquid storage section. A liquid distribution section is coaxially arranged in the tower body above the cyclone section. A tower plate is arranged coaxially in the tower body above the liquid distribution section. A tower top liquid phase reflux inlet communicating with the internal side of the tower body is arranged on the outer surface of the tower body on the top of the tower plate. A foam-removing section is coaxially arranged in the tower body above the tower top liquid phase reflux inlet. A tower top steam outlet is arranged on the top in the tower body above the foam-removing section. According to the stripping tower provided by the invention, with the cyclone principle, desorption strength is enhanced, reaction tower height is reduced, space and material are saved, and desorption effect of the reaction tower is improved.
Description
Technical field
The invention belongs to chemical industry, environmental technology field, relate to distillation desorb reaction tower, especially a kind of board-like eddy flow composite steam stripping tower and application.
Background technology
Research shows, the excessive emissions of carbon dioxide, is the major reason causing the environmental problems such as global warming.China is also increasingly strict to the control of CO2 emission.In many CO2 emission sources, the most concentrated with the carbon dioxide of burning and exhausting, and concentration is higher, more for the benefit of absorbs.
For the improvement of carbon dioxide, adopting more method at present, is absorb the carbon dioxide in combustion product gases, then the absorbing liquid of enrichment is resolved, by carbon dioxide collection higher for purity, carry out corresponding after-treatment, reach the target of the comprehensive regulation.
The technological process of carbon dioxide absorption and desorb is ripe and realizes the technology of commercial Application, employing MEA or MDEA is absorbent, containing the carbon dioxide of about 20% in solution after absorption, this solution is claimed to be rich solution, rich solution is passed in stripping apparatus, carry out distillation desorb, isolate carbon dioxide, in solution under residue, gas concentration lwevel is about 7%, claims this solution to be lean solution.Lean solution passes in absorption equipment, recycles as absorbent.
In whole flow process, distillation desorption process is the key that can this technology recycle absorbent, and the height of its desorption efficiency directly affects the effect of absorption and the energy consumption height of desorb simultaneously, and different desorption methods directly affects the cost of operation.Distillation desorption process mainly relies on steam and liquid comes into contact, and the heat of steam, by the material evaporation to be separated in solution, forms gaseous material and enters in follow-up flow process, to reach the object of solute and separated from solvent.Therefore, the size of gas liquid interfacial area, the power of gas-liquid exchange directly affects the efficiency of distillation desorb.
Stripper form conventional at present mainly contains packed tower and plate column, and plate column is divided into again sieve-plate tower, valve tray tower etc.Packed tower utilizes the surface area of filler large, and the principle that gas liquid interfacial area is large realizes desorb, treats that desorb is held liquid and flowed through filling surface from top to bottom, steam flows through filler from bottom to top, two media contacts at filling surface, realizes stripping process, and its gas-liquid contact face is large, but its gas-liquid mass transfer intensity is more weak, cause packed tower volume huger, from great, filler easily blocks, opereating specification is little, and complex structure.Plate column utilizes solution to flow through tray surfaces, and on plate, device is to strengthen gas-liquid mass transfer intensity, thus realizes the turriform of still-process, wherein arranges multilayer column plate, and template has multiple pattern optional.On column plate tower, height of liquid layer needs more strictly to control, and the situation of flooding easily occurs, and individual layer plate efficiency is lower, needs series connection to compare multilayer column plate and just can reach target efficiency and resistance is larger.
According to the principle of existing stripper plant, increase gas-liquid contact surface area or increase gas-liquid mass transfer intensity, the effect of distillation desorb can be improved, improving desorption efficiency.
By retrieval, not yet find the patent publication us relevant to patent application of the present invention.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, a kind of board-like eddy flow composite steam stripping tower is provided, Novel stripping tower internals are installed in this tower body, this tower body utilizes the work of eddy flow principle, the feature of this tower body is that gas-liquid mass transfer intensity is high, effectively can improve the Srteam Stripping effect of this reaction tower, reduce resistance at the bottom of tower.
The object of the invention is to be achieved through the following technical solutions:
A kind of board-like eddy flow composite steam stripping tower, the tower body of this composite steam stripping tower is the vertical tower of a hollow, liquid outlet at the bottom of installation one tower is communicated with in bottom tower body, one liquid storage section is installed bottom the tower body of desorber, one heater is installed in liquid storage section, eddy flow section logical in one is coaxially set in the tower body above liquid storage section, the cloth liquid section of one hollow is coaxially set in the tower body above eddy flow section, in tower body above cloth liquid section, coaxially column plate is set, the tower body outer surface on column plate top installs a tower top liquid phase reflux inlet be connected with tower body inside, one foam removal section is coaxially set in the tower body above tower top liquid phase reflux inlet, in tower body above foam removal section, top arranges an overhead vapours outlet,
Described eddy flow section comprises whirl cylinder and cyclone, the coaxial whirl cylinder installing multiple hollow in eddy flow section, in this whirl cylinder, cyclone is installed in bottom, cyclone comprises swirl vane axle and swirl vane, swirl vane circularizes arrangement around swirl vane axle, tilts to be installed on swirl vane axle, swirl vane axle is coaxial with whirl cylinder, between whirl cylinder and swirl vane axle, swirl vane is installed, top between each whirl cylinder and bottom are installed shrouding by sealing and are linked together, and the outer fringe seal of this shrouding is installed on inside tower body.
And, bottom in the tower body of desorber coaxially arranges the liquid storage section of a hollow, at a side of liquid storage section, one heater is installed, or, described liquid storage section is installed on outside the tower body of desorber, utilizes communicating pipe to be connected with desorber, top communicating pipe delivering vapor, bottom communicating pipe delivered solution, the side bottom liquid storage section installs a heater.
And described eddy flow section is composed in parallel by multiple cyclone, coaxial parallel multi-layer eddy flow section in the tower body above liquid storage section.
And described heater is electric heater, steam heater or hot oil heater.
And the cloth liquid mode of described cloth liquid section takes the parallel connection of tree-shaped primary branch, pipe network, overflow launder, nozzle evenly spray a kind of cloth liquid mode in solution.
And described column plate is dual-flow tray, carry potential overflow device column plate, sieve-type column plate or tongue type column plate plural serial stage.
And described foam removal section adopts wire mesh demister or deflector-type separator.
And described swirl vane is the blade construction that propeller type tilts, and its angle of inclination becomes 30-60 degree with axis, and adopt the blade shape of plane or curved surface, its perspective plane is rectangle or fan-shaped.
Board-like eddy flow composite steam stripping tower as above is as the application in the desorption apparatus in flue gas decarbonization system.
Advantage of the present invention and good effect are:
1, the steam that the liquid storage section of this stripper generates passes through cyclone from bottom to top, forms swirling eddy; Eddy flow section is cloth liquid section above, to treat that the distribution mode of stripper solution by different process demand passes in stripper, some layers of cyclone are flowed through from top to bottom after solution enters, under the effect of swirling eddy, be cut and be dispersed into granule drop, and under air-flow effect upwards, form the drop section suspended, fully carry out its gas-liquid and also contact and reach gas-liquid mass transfer object; Cloth liquid section arranges column plate section and on column plate, carries out multiple condensation and the vaporescence that repeatedly distributes reaches the object of further gas-liquid mass transfer, different column plate is formed the liquid phase that component is different; Tower top arranges the object that liquid-phase reflux pipeline reaches liquid phase purification; In tower top foam removal section, for removing the liquid particles carried in desorption gas, to reach the object of purification desorption gas, this stripper utilizes eddy flow principle, adds the intensity of desorb, reduces the height of reaction tower, save space and material, improve the desorption effect of reaction tower.
2, this stripper, relative packed tower volume is less, deadweight is lighter, and tower internals circulation diameter is comparatively large, should not block, and opereating specification is larger.
3, the relative plate column of this stripper, eddy flow section individual layer mass transfer effect is stronger, flooding situation also can effectively be alleviated and also resistance less.
Accompanying drawing explanation
Fig. 1 is structure partial sectional view of the present invention;
Fig. 2 is the structure enlarged diagram of eddy flow section in Fig. 1;
Fig. 3 is the top view of Fig. 2;
Fig. 4 is the axle side schematic diagram of cyclone of the present invention.
Detailed description of the invention
For accompanying drawing embodiment, the invention will be further described below, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of board-like eddy flow composite steam stripping tower, as shown in Figure 1, the tower body 4 of this composite steam stripping tower is the vertical tower of a hollow, and the bottom of this tower body is provided with supporting leg 1, is communicated with liquid outlet 2 at the bottom of installation one tower in bottom tower body.
Bottom in composite steam stripping tower tower body is coaxially arranged with the liquid storage section 3 of a hollow, storage solutions in this liquid storage section, this storage solutions amount can meet the evaporation capacity of ten minutes, at liquid storage section one side, one heater 5 is installed, heater can use electric heater, steam heater or heat conduction wet goods heater, and heating power is according to institute's calorific requirement configuration in desorb; Or liquid storage section and heater also can be installed on beyond desorb tower body as independently equipment, utilize communicating pipe to be connected with desorber, top communicating pipe delivering vapor, bottom communicating pipe delivered solution, the side bottom liquid storage section installs a heater.
Eddy flow section 6 logical in one is coaxially set in the tower body above liquid storage section, this eddy flow section is composed in parallel by multiple cyclone, also can coaxial parallel multi-layer eddy flow section in tower body above liquid storage section, the two-layer eddy flow section of coaxial series connection in tower body in the present embodiment above liquid storage section, every layer of eddy flow section is composed in parallel by 4 cyclones.
The cloth liquid section 7 of one hollow is coaxially set in the tower body above eddy flow section, takes single tube end that the cloth liquid mode of nozzle is installed in the present embodiment, also can take the various ways such as the parallel connection of tree-shaped primary branch, pipe network, overflow launder.Coaxially arrange column plate 8 in tower body above cloth liquid section, this column plate can be dual-flow tray, carry potential overflow device column plate, sieve-type column plate, tongue type column plate plural serial stage, takes dual-flow tray 3 grades series connection in the present embodiment.The tower body outer surface on column plate top installs a tower top liquid phase reflux inlet 9 be connected with tower body inside, and coaxially arrange a foam removal section 10 in the tower body above tower top liquid phase reflux inlet, foam removal section can adopt wire mesh demister or deflector-type separator.In tower body above foam removal section, top arranges an overhead vapours outlet 11.
As Figure 2-3, described eddy flow section comprises whirl cylinder and cyclone (in figure non-label), and in eddy flow section, the coaxial whirl cylinder 15 installing multiple hollow, such as, can be 2 ~ 6, this whirl cylinder height 300mm-1000mm.In this whirl cylinder, cyclone is installed in bottom, cyclone comprises swirl vane axle 13 and swirl vane 14, swirl vane circularizes arrangement around swirl vane axle, and tilt to be installed on swirl vane axle, swirl vane axle is coaxial with whirl cylinder, install swirl vane between whirl cylinder and swirl vane axle, the internal diameter of whirl cylinder is identical with the external diameter of swirl vane.Swirl vane is the blade construction that propeller type tilts, and its angle of inclination becomes 30-60 degree with axis, and the quantity of this swirl vane can be determined as the case may be, arranges six swirl vanes in the present embodiment; In the present embodiment, the angle of inclination of swirl vane and axis direction is 30 degree; Swirl vane can take plane or curve form, and the present embodiment is plane blade; The profile of projecting blade can be rectangle or fan-shaped, and the present embodiment is fan-shaped.Top between each whirl cylinder and bottom are installed shrouding 12 by sealing and are linked together, the outer fringe seal of this shrouding is installed on inside tower body, this shrouding can prevent flue gas short circuit, and by the enclosed cross of the desorber tower body beyond whirl cylinder, this shrouding can be welded on whirl cylinder.
The operation principle of the present invention's board-like eddy flow composite steam stripping tower is as follows:
Treat that steam stripped solution enters in stripper by the pipeline of cloth liquid section 7, flow in liquid storage section 3 from top to bottom under gravity, keep certain liquid level in liquid storage section, at least will exceed heater 5.Heater heats the solution in liquid storage section, and the heating continued to boiling is to produce the steam of stable quantity.Steam flows through eddy flow section 6 from bottom to top, spiral helicine air-flow is formed under the effect of swirl vane 13, upwards flow along whirl cylinder 15, eddy flow section is cloth liquid section above, to treat that the distribution mode of stripper solution by different process demand passes in stripper, some layers of cyclone are flowed through from top to bottom after solution enters, spiral helicine air-flow contacts with top-down solution in whirl cylinder, solution is broken and is divided into droplet under the effect of swirling eddy, the drop that diameter is less than dividing diameter can move upward with air-flow from bottom to top, and in motion process, aggregate into the drop of larger particles gradually, fall under gravity, this process can ceaselessly move in circles, macroscopically will form one section of gas-liquid suspension section in whirl cylinder 15, there is violent effect of mass transmitting in gas-liquid two-phase in this suspension section, achieve and the solute in solution is heated up in a steamer effect by carrying of taking out of of steam.Solute gas and steam move upward jointly, on column plate 8 through multiple condensation and repeatedly components vaporize reach the object of further gas-liquid mass transfer, different column plate is formed the liquid phase that component is different, reaches the effect of rectifying.The drop carried by gas through demister 10 catches removing, purified gas enters condenser through stripper steam (vapor) outlet 11 after revolving point, condenser reflux liquid gets back to stripper top by tower top liquid phase reflux inlet 9, and stripping product introduction follow-up equipment processes further.Tower top arranges the object that liquid-phase reflux pipeline reaches liquid phase purification; In tower top foam removal section, for removing the liquid particles carried in desorption gas, to reach the object of purification desorption gas.
Claims (6)
1. a board-like eddy flow composite steam stripping tower, the tower body of this composite steam stripping tower is the vertical tower of a hollow, liquid outlet at the bottom of installation one tower is communicated with in bottom tower body, it is characterized in that: a liquid storage section is installed bottom the tower body of stripper, one heater is installed in liquid storage section, eddy flow section logical in one is coaxially set in the tower body above liquid storage section, the cloth liquid section of one hollow is coaxially set in the tower body above eddy flow section, in tower body above cloth liquid section, coaxially column plate is set, the tower body outer surface on column plate top installs a tower top liquid phase reflux inlet be connected with tower body inside, one foam removal section is coaxially set in the tower body above tower top liquid phase reflux inlet, in tower body above foam removal section, top arranges an overhead vapours outlet,
Described eddy flow section comprises whirl cylinder and cyclone, the coaxial whirl cylinder installing multiple hollow in eddy flow section, in this whirl cylinder, cyclone is installed in bottom, cyclone comprises swirl vane axle and swirl vane, swirl vane circularizes arrangement around swirl vane axle, tilts to be installed on swirl vane axle, swirl vane axle is coaxial with whirl cylinder, between whirl cylinder and swirl vane axle, swirl vane is installed, top between each whirl cylinder and bottom are installed shrouding by sealing and are linked together, and the outer fringe seal of this shrouding is installed on inside tower body;
Described eddy flow section comprises the cyclone of multiple parallel connection, coaxial parallel multi-layer eddy flow section in the tower body above liquid storage section;
The cloth liquid mode of described cloth liquid section takes the parallel connection of tree-shaped primary branch, pipe network, overflow launder, nozzle evenly spray a kind of cloth liquid mode in solution;
Described column plate is dual-flow tray, carry potential overflow device column plate, sieve-type column plate or tongue type column plate plural serial stage.
2. board-like eddy flow composite steam stripping tower according to claim 1, it is characterized in that: the bottom in the tower body of stripper coaxially arranges the liquid storage section of a hollow, at liquid storage section one side, one heater is installed, or, described liquid storage section is installed on outside the tower body of stripper, utilizes communicating pipe to be connected with stripper, top communicating pipe delivering vapor, bottom communicating pipe delivered solution, the side bottom liquid storage section installs a heater.
3. board-like eddy flow composite steam stripping tower according to claim 1 and 2, is characterized in that: described heater is electric heater, steam heater or hot oil heater.
4. board-like eddy flow composite steam stripping tower according to claim 1 and 2, is characterized in that: described foam removal section adopts wire mesh demister or deflector-type separator.
5. board-like eddy flow composite steam stripping tower according to claim 1 and 2, it is characterized in that: described swirl vane is the blade construction that propeller type tilts, its angle of inclination becomes 30-60 degree with axis, and adopt the blade shape of plane or curved surface, its perspective plane is rectangle or fan-shaped.
6. the board-like eddy flow composite steam stripping tower as described in any one of claim 1 to 5 is as the application in the desorption apparatus in flue gas decarbonization system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310477469.XA CN103537110B (en) | 2013-10-14 | 2013-10-14 | Plate-type cyclone composite stripping tower and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310477469.XA CN103537110B (en) | 2013-10-14 | 2013-10-14 | Plate-type cyclone composite stripping tower and application thereof |
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| CN103537110A CN103537110A (en) | 2014-01-29 |
| CN103537110B true CN103537110B (en) | 2015-06-24 |
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| CN100361723C (en) * | 2005-06-06 | 2008-01-16 | 天津大学 | Pyramidal laying liquid typed high performance mass transfer tray with central downcast pipe |
| CN201049931Y (en) * | 2007-02-15 | 2008-04-23 | 河南省化工设计院有限公司 | Methanol separator |
| CN201411449Y (en) * | 2009-06-19 | 2010-02-24 | 刘明学 | Spiral stripping tower |
| KR101235619B1 (en) * | 2011-04-08 | 2013-02-21 | 주식회사 한강엔지니어링 | High purity distillation apparatus of Continuous type |
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