CN2897370Y - Central pipe falling-film dry-pan re-boiler for producing oxygen-18 by reduced-pressure rectification - Google Patents
Central pipe falling-film dry-pan re-boiler for producing oxygen-18 by reduced-pressure rectification Download PDFInfo
- Publication number
- CN2897370Y CN2897370Y CN 200620013194 CN200620013194U CN2897370Y CN 2897370 Y CN2897370 Y CN 2897370Y CN 200620013194 CN200620013194 CN 200620013194 CN 200620013194 U CN200620013194 U CN 200620013194U CN 2897370 Y CN2897370 Y CN 2897370Y
- Authority
- CN
- China
- Prior art keywords
- mesotube
- tube
- liquid
- film
- reboiler
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
A central tube falling film kettle reboiler for the oxygen-18 production of segmentation decompressing and water rectify belongs to the chemical heat transfer equipment field. The utility model discloses a central tube falling film kettle reboiler composed of upper and lower bodies and a bottom head three parts. The upper body is provided with a separation ring, a circular baffle and a fluid collection weir that is provided with a flow outlet nozzle. The lower body is a multitubular heat exchanger in which the lower end is floating and the main steam flow tube is in the centre. The tube side is composed of a tube sheet, a heating tube, a central tube, a floating tube and a steam dome formed with the floating tube sheet and floating head and so on. The falling film diversion device is hoisted from the upper port of the heating tube to the inside of the heating tube. Not only a liquid seal with a certain height is formed on the upper inside part of the heating tube, but also the liquid entering into the heating tube will flow to the tube wall with membrane fluidity. Therefore, with the utility model, the investment can be effectively saved, and the operation and production cost can also be reduced.
Description
Technical field
The utility model relates to the reboiler that uses in the decompression water-distilling and generating oxygen-18 water technology, belongs to the chemical industry field of heat exchange equipment.
Background technology
The reboiler that uses in existing decompression water-distilling and generating oxygen-18 technology, be the wet still reboiler of liquid holdup, there has been the liquid that is detained that liquid level has also just been arranged, in continued operation system process, just must carry out liquid level control, also must control the flow of heating steam, these all can cause the increase of investment cost and running cost, moreover, the isotope that how much also directly influences of reboiler hold-up concentrates equilibration time, it is long more that the big more isotope of reboiler hold-up concentrates equilibration time, and the operating cost that isotope concentrates between balance period is also just high more.
The utility model content
The purpose of this utility model is to provide a kind of mesotube film-falling drying pot reboiler, overcomes the shortcoming of existing reboiler technology.
To achieve these goals, the utility model has adopted following technical scheme:
Be used to the to reduce pressure mesotube film-falling drying pot reboiler of water-distilling and generating oxygen-18 comprises:
The last body that connects successively, time body and bottom (head) from top to bottom,
Be located at the described stripper loop of going up the body middle part,
Be distributed in the U type hanging piece of circular in the described stripper loop,
Be welded in the circular baffle plate of described U type hanging piece lower end,
Be located at the liquid-collecting weir of described circular baffle plate below,
Be located at the described liquid flow export of going up the body bottom and take over,
Be welded in the described tube sheet of body upper port down,
Run through described down body and protrude upward the mesotube of described liquid-collecting weir,
Be located at a plurality of heating tubes around the described mesotube in the described down body, described heating tube upper end and described tube sheet expanded and welded tube joint together,
Be located at every heating tube falling liquid film guiding device inner suitable for reading,
Be located at the heating steam entrance sleeve that is positioned at described tube sheet below on the described body down,
Be positioned at described down body both with described heating tube lower end expanded and welded tube joint also with the floating tubesheet of described mesotube end opening welding,
With the unsteady end socket of described floating tubesheet lower edge welding formation remittance steam chest,
Main part is provided with along described mesotube center line, and exceed the still liquid exhaustion that passes described upward body wall after described mesotube part suitable for reading is bent and be fixed on the body wall and manage, and
The heating steam that the is located at described bottom (head) center water out that condenses is taken over.
As a kind of improvement of the present utility model, described reboiler comprises that also being located at the described liquid of going up the body upper side flows to a mouthful adapter.
In the utility model, described falling liquid film guiding device comprises that flow guiding head hangs pin, flow guiding head and upper and lower clearance pin; Described flow guiding head is hung pin by described flow guiding head and is hung on described heating tube inside suitable for reading; The described clearance pin that goes up divides two circles to be distributed on the excircle of described flow guiding head with following clearance pin, makes to form uniform annular space between flow guiding head and heating tube inwall.
In the utility model, described flow guiding head is the combination of up-thin-low-thick two sections cylinders, and with the transition of arc surface form, thin cylinder upper side is to being drilled with a suspension eye between thin, thick cylinder, and thick cylinder end opening is made the horn mouth shape.
In the utility model, the cylindrical length of described flow guiding head two sections be according to steam flow behind the vaporizing liquid in described annular space on flow fluid pressure head sum above the resistance produced and the annular space greater than steam flow flow through heating tube, converging steam chest and mesotube, to make the flow resistance that produced of U type definite.
In the utility model, described liquid-collecting weir cuts body by the handstand funnel and annulus constitutes, described handstand funnel cuts on the inner periphery that the body end opening is welded in described annulus, and the excircle of described annulus is welded on the described inwall of going up body, and takes over a little less than described liquid flow export.
In the utility model, the described mesotube handstand funnel than described liquid-collecting weir suitable for reading cuts the suitable for reading high 50～150mm of body.
In the utility model, the interior cross section of described mesotube equates with the interior cross section sum of described each heating tube or is approaching.
In the utility model, the lower end of described still liquid exhaustion pipe is 45 ° of otch and is supporting the unsteady end socket inwall of remittance steam chest.
In the utility model, described reboiler also comprises the baffle arrangement that is located between described body internal tube plate down and the floating tubesheet.
Advantage of the present utility model is:
1. described mesotube film-falling drying pot reboiler adopts membranaceous heating, vaporization mode, and heat-transfer effect is good, and required heat exchange area is little, and cost is low.
2. liquid stream is to be in surperficial vapor state basically, and less than the elevation of boiling point phenomenon that causes because of liquid level, the heating energy consumption is more lower slightly.
3. liquid film is vaporized while flowing, and the steam flow after the vaporization is led back rectifying column through mesotube, and process is continuous and steady, easy to operate.
4. do not have the liquid level controlling unit, need not to control the heating steam flow yet, process automation degree height, reduced investment, operating cost is low, and process stabilization is reliable.
5. do not have still liquid, make the liquid holdup of whole water rectifying column cascade unit diminish, shortened isotope and concentrated equilibration time, reduced the operating cost between the concentrated balance period of isotope.
Therefore, use the utility model can reduce investment outlay effectively, reduce operating cost, reduce production costs.
Description of drawings
Fig. 1 is the structural representation of an exemplary embodiments of reboiler described in the utility model.
Fig. 2 is near the partial schematic diagram of falling liquid film guiding device in the reboiler described in the utility model.
The specific embodiment
Describe the utility model in detail below in conjunction with accompanying drawing.
As shown in Figure 1, in exemplary embodiments of the present utility model, the mesotube film-falling drying pot reboiler of the described water-distilling and generating oxygen-18 that is used to reduce pressure comprises: the last body 15 that connects successively from top to bottom, following body 2 and bottom (head) 24, be located at the stripper loop 11 at body 15 middle parts, be distributed in the U type hanging piece 10 of circular in the stripper loop 11, be welded in the circular baffle plate 9 of U type hanging piece 10 lower ends, be located at the liquid-collecting weir 7 of circular baffle plate 9 belows, the liquid flow export that is located at body 15 bottoms takes over 8, be welded in down the tube sheet 19 of body 2 upper port, run through following body 2 and protrude upward the mesotube 17 of liquid-collecting weir 7, be located at down a plurality of heating tubes 21 around the mesotube 17 in the body 2, heating tube upper end and tube sheet 19 expanded and welded tube joints are together, be located at every heating tube 21 inside falling liquid film guiding device 20 suitable for reading, be located at down the heating steam entrance sleeve 6 that is positioned at tube sheet 19 belows on the body 2, be positioned at following body 2 both with heating tube 21 lower end expanded and welded tube joints also with the floating tubesheet 22 of mesotube 17 end openings welding, unsteady end socket 23 with floating tubesheet 22 lower edges welding formation remittance steam chest, main part is along mesotube 17 center line settings, exceed and pass body 2 walls after mesotube 17 parts suitable for reading are bent and be fixed on still liquid exhaustion pipe 16 on body 2 walls, and the heating steam that the is located at bottom (head) 24 centers water out that condenses takes over 25.
In the present embodiment, the two ends up and down of last body 15 all have flange, and the upper flange of last body 15 is used for being connected with the rectifying column lower flange, make described reboiler and the rectifying column equipment that forms a whole; The lower flange of last body 15 is connected and fixed with the tube sheet 19 of following body 2.Be connected and fixed by flange between following body 2 and the bottom (head) 24.
In the present embodiment, described reboiler comprises that also being located at the described liquid of going up the body upper side flows to a mouthful adapter 14, is used for being communicated with a back level rectifying column, receives the liquid stream that back grade rectifying column returns.Whole reboiler also is installed on the basis by supporting leg 1.
As shown in Figure 2, in the present embodiment, falling liquid film guiding device 20 comprises that flow guiding head is hung pin 20a, flow guiding head 20b, upward clearance pin 20c reaches clearance pin 20d down.Flow guiding head 20b is the combination that two sections diameters do not wait cylinder, and last cylinder diameter is thin, and upper side is used for interting flow guiding head and hangs pin 20a to being drilled with the boring of suspension eye; Following cylinder diameter is thick, but than the little 2mm of heating tube 21 internal diameters.The horn mouth shape is made in thick cylinder lower end, prevents to improve the liquid film-formation result along the past center diffluence of the mobile solution of the pluckings periphery of water conservancy diversion.Thin cylinder and thick cylinder junction are with the transition of arc surface form, so that guiding liquids flows to the heating tube inwall.Flow guiding head is hung the external diameter that pin 20a length surpasses heating tube 21.Flow guiding head is hung the suspension eye that pin 20a passes the thin cylinder top of flow guiding head 20b, and flow guiding head 20b is hung on heating tube 21 inside suitable for reading.Last clearance pin 20c and down clearance pin 20d divide two circles to be distributed on the thick cylinder of flow guiding head 20b, make flow guiding head 20b and heating tube 21 centerings, thus between flow guiding head 20b and heating tube 21 inwalls the uniform annular space of formation.
In the present embodiment, the cylindrical length of described flow guiding head 20b two sections be according to steam flow behind the vaporizing liquid in described annular space on flow above the resistance produced and the annular space fluid pressure head sum greater than steam flow flow through heating tube 21, converge steam chest and mesotube 17 and make the U type resistance that is produced that flows and determine, the reboiler running is stablized.
In the present embodiment, liquid-collecting weir 7 is cut by the handstand funnel that body and annulus constitute, the end opening that described handstand funnel cuts body is welded on the inner periphery of described annulus, and the excircle of described annulus is welded on the inwall of described upward body 15, and takes over 8 a little less than described liquid flow export.
The mesotube 17 suitable for reading high 50～150mm that can be arranged to cut body suitable for reading than the handstand funnel of liquid-collecting weir 7.In the present embodiment, the mesotube 17 handstand funnels than liquid-collecting weir 7 suitable for reading cut the suitable for reading high 100mm of body.
In the present embodiment, the cross section equates with the interior cross section sum of each heating tube in the described mesotube 17.
In the present embodiment, still liquid exhaustion pipe 16 lower ends are 45 ° of otch and are supporting remittance steam chest end socket 23 inwalls that float, exceed mesotube 17 suitable for reading after, still liquid exhaustion pipe 16 is curved 90 ° and passes body 15 walls and be fixed on the wall of body 15.Still liquid exhaustion pipe 16 is after the operation of rectifying column bubble liquid is finished, and is used for pumping the liquid that retains in the reboiler, makes reboiler enter normal operating conditions as early as possible.
In the present embodiment, described reboiler also comprises the baffle arrangement 5 that is located between described body internal tube plate down and the floating tubesheet, is used for improving the heating steam flow velocity and strengthens to thermal effect.
In the present embodiment, the upper flange of last body 15 below also is provided with temperature-measuring port and takes over 12, is used for inserting temperature element.
Below, a kind of application mode of reboiler described in the utility model is described, be about to rectifying column and mesotube film-falling drying pot reboiler described in the utility model and be fixed together up and down, water-distilling and generating oxygen-18 is used to reduce pressure.
At the bottom of the rectifying column and the liquid that returns from the back tower flow to into mesotube film-falling drying pot reboiler described in the utility model, flow into liquid-collecting weir 7 by circular baffle plate 9 guiding of stripper loop 11 belows suspention.In liquid-collecting weir 7 bottoms, described liquid stream is taken over 8 by the liquid flow export and is connected with the measuring pump import, cuts apart accurately through measuring pump, delivers to back level rectifying column cat head, adds the feed liquid use as back grade rectifying column; After taking this part liquid stream away, remaining liquid stream is then from liquid-collecting weir 7 suitable for reading overflowing on the tube sheet 19, then liquid overflows in the heating tube 21 from the heating tube upper limb and also at first rushes down on the thin periphery of flow guiding head, flows to downwards on the arc surface of described thin, thick cylinder intersection along described thin periphery then.Liquid is flushed under arc surface guiding on the inwall of described heating tube and forms the film that flows downward, and promptly is falling film type and flows, and is heated the outer heating steam heating of pipe 21 in the journey, vaporizes falling to flow through.Liquid film is vaporized while flowing downward, attenuation gradually in the process of flowing downward, and disappearing at last is vaporized into gas phase fully, and the reboiler bottom is dried still state.Because the gap is very little between pluckings cylinder of described water conservancy diversion and heating tube inwall, there is the liquid level of certain altitude, under the effect of this hydrostatic head and annular space resistance, the gas after the vaporization can only flow downward in heating tube.The steam flow that generates in each root heating tube flows out heating tube, imports the described chamber of confluxing, and the direction of turning back enters mesotube 17, flows from bottom to top, after the outflow mesotube 17, walks around circular baffle plate 9, and the endoporus that passes stripper loop 11 returns rectifying column.
The foregoing description of the present utility model only is that preferred implementation of the present utility model is described; be not that design of the present utility model and scope are limited; do not breaking away under the utility model design prerequisite; the various distortion that those of skill in the art make the technical solution of the utility model in this area; all should fall in the protection domain of the present utility model, the technology contents that the utility model is asked for protection all is recorded in claims.
Claims (10)
1. be used to the to reduce pressure mesotube film-falling drying pot reboiler of water-distilling and generating oxygen-18 is characterized in that described reboiler comprises:
The last body that connects successively, time body and bottom (head) from top to bottom,
Be located at the described stripper loop of going up the body middle part,
Be distributed in the U type hanging piece of circular in the described stripper loop,
Be welded in the circular baffle plate of described U type hanging piece lower end,
Be located at the liquid-collecting weir of described circular baffle plate below,
Be located at the described liquid flow export of going up the body bottom and take over,
Be welded in the described tube sheet of body upper port down,
Run through described down body and protrude upward the mesotube of described liquid-collecting weir,
Be located at a plurality of heating tubes around the described mesotube in the described down body, described heating tube upper end and described tube sheet expanded and welded tube joint together,
Be located at every heating tube falling liquid film guiding device inner suitable for reading,
Be located at the heating steam entrance sleeve that is positioned at described tube sheet below on the described body down,
Be positioned at described down body both with described heating tube lower end expanded and welded tube joint also with the floating tubesheet of described mesotube end opening welding,
With the unsteady end socket of described floating tubesheet lower edge welding formation remittance steam chest,
Main part is provided with along described mesotube center line, and exceed the still liquid exhaustion that passes described upward body wall after described mesotube part suitable for reading is bent and be fixed on the body wall and manage, and
The heating steam that the is located at described bottom (head) center water out that condenses is taken over.
2. mesotube film-falling drying pot reboiler according to claim 1 is characterized in that: described reboiler comprises that also being located at the described liquid of going up the body upper side flows to a mouthful adapter.
3. mesotube film-falling drying pot reboiler according to claim 1 and 2 is characterized in that: described falling liquid film guiding device comprises that flow guiding head hangs pin, flow guiding head and upper and lower clearance pin; Described flow guiding head is hung pin by described flow guiding head and is hung on described heating tube inside suitable for reading; The described clearance pin that goes up divides two circles to be distributed on the excircle of described flow guiding head with following clearance pin, makes to form uniform annular space between flow guiding head and heating tube inwall.
4. mesotube film-falling drying pot reboiler according to claim 3, it is characterized in that: described flow guiding head is the combination of up-thin-low-thick two sections cylinders, carefully, between thick cylinder with the transition of arc surface form, thin cylinder upper side is to being drilled with a suspension eye, and thick cylinder end opening is made the horn mouth shape.
5. mesotube film-falling drying pot reboiler according to claim 4 is characterized in that: the cylindrical length of described flow guiding head two sections be according to steam flow behind the vaporizing liquid in described annular space on flow fluid pressure head sum above the resistance produced and the annular space greater than steam flow flow through heating tube, converging steam chest and mesotube, to make the flow resistance that produced of U type definite.
6. mesotube film-falling drying pot reboiler according to claim 1 and 2, it is characterized in that: described liquid-collecting weir cuts body by the handstand funnel and annulus constitutes, described handstand funnel cuts on the inner periphery that the body end opening is welded in described annulus, the excircle of described annulus is welded on the inwall of described upward body, and takes over a little less than described liquid flow export.
7. mesotube film-falling drying pot reboiler according to claim 1 and 2 is characterized in that: the described mesotube handstand funnel than described liquid-collecting weir suitable for reading cuts the suitable for reading high 50～150mm of body.
8. mesotube film-falling drying pot reboiler according to claim 1 and 2 is characterized in that: the interior cross section of described mesotube equates with the interior cross section sum of described each heating tube or is approaching.
9. mesotube film-falling drying pot reboiler according to claim 1 and 2 is characterized in that: the lower end of described still liquid exhaustion pipe is 45 ° of otch and is supporting the unsteady end socket inwall of remittance steam chest.
10. mesotube film-falling drying pot reboiler according to claim 1 and 2 is characterized in that: described reboiler also comprises the baffle arrangement that is located between described body internal tube plate down and the floating tubesheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620013194 CN2897370Y (en) | 2006-04-13 | 2006-04-13 | Central pipe falling-film dry-pan re-boiler for producing oxygen-18 by reduced-pressure rectification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620013194 CN2897370Y (en) | 2006-04-13 | 2006-04-13 | Central pipe falling-film dry-pan re-boiler for producing oxygen-18 by reduced-pressure rectification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2897370Y true CN2897370Y (en) | 2007-05-09 |
Family
ID=38072712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620013194 Expired - Lifetime CN2897370Y (en) | 2006-04-13 | 2006-04-13 | Central pipe falling-film dry-pan re-boiler for producing oxygen-18 by reduced-pressure rectification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2897370Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108325232A (en) * | 2018-05-09 | 2018-07-27 | 安庆市鑫富化工有限责任公司 | One kind prevents material from polymerizeing novel reboiler |
-
2006
- 2006-04-13 CN CN 200620013194 patent/CN2897370Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108325232A (en) * | 2018-05-09 | 2018-07-27 | 安庆市鑫富化工有限责任公司 | One kind prevents material from polymerizeing novel reboiler |
| CN108325232B (en) * | 2018-05-09 | 2023-12-22 | 安庆市鑫富化工有限责任公司 | Novel reboiler for preventing material from polymerizing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101053696A (en) | Central pipe film-falling drying pot reboiling device for vacuum water distilling and generating oxygen-18 | |
| CN209500800U (en) | A kind of forced circulation MVR evaporator | |
| CN2897370Y (en) | Central pipe falling-film dry-pan re-boiler for producing oxygen-18 by reduced-pressure rectification | |
| CN206027123U (en) | Waste solvent recoverer suitable for coating processing | |
| CN218923828U (en) | Anti-blocking condensing device for rectifying tower | |
| CN208591558U (en) | A kind of economic benefits and social benefits vacuum concentrator | |
| CN204806354U (en) | Heat pipe formula falling film evaporation low temperature waste heat utilization and water -recovery apparatus | |
| CN107082462A (en) | A kind of modified and reinforced tubular type fresh-water generator in surface | |
| CN202915742U (en) | Tangential continuous spiral diversion winding pipe condenser | |
| CN214286759U (en) | Rectifying column condensing equipment | |
| CN204944228U (en) | A kind of condenser avoiding fixed gas to gather | |
| CN107677151A (en) | Chemical Manufacture tubular heat exchanger | |
| CN201620049U (en) | Vaporization and concentration device | |
| CN2925571Y (en) | Internal-recycling guide concentrating tank | |
| CN206660632U (en) | A kind of tubular type rises film sea water desalinating unit | |
| CN1292991C (en) | Solar reverse osmosis water purifier | |
| CN209204737U (en) | Water segregator used in a kind of spirolactone walsh oxidation reaction | |
| CN202762277U (en) | Cylindrical block hole type graphite falling film absorber | |
| CN206799196U (en) | A kind of electric heating circulating chilled water distiller | |
| CN207769386U (en) | A kind of improved-type gas-liquid separation device | |
| CN215310264U (en) | High-purity organic solvent recovery circulation system | |
| CN219023285U (en) | Integrated rectifying tower kettle | |
| CN107744670A (en) | A kind of evaporator | |
| CN207811621U (en) | A kind of low reflux refining system of thick isoprene | |
| CN209422993U (en) | A kind of mother liquor recovering device producing nano zine oxide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20070509 Effective date of abandoning: 20100729 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |