CN103884201B - The built-in shell-and-plate condenser of solvent reclamation tower top - Google Patents
The built-in shell-and-plate condenser of solvent reclamation tower top Download PDFInfo
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- CN103884201B CN103884201B CN201410041123.XA CN201410041123A CN103884201B CN 103884201 B CN103884201 B CN 103884201B CN 201410041123 A CN201410041123 A CN 201410041123A CN 103884201 B CN103884201 B CN 103884201B
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Abstract
The present invention discloses the built-in shell-and-plate condenser of a kind of solvent reclamation tower top, and this condenser can be arranged on regenerator inside, adopts natural back flow mode that the liquid phase medium of condensation is back to tower top, and arrangement technology is simple; And the heat exchange plate of condenser is titanium material, corrosion-resistant, can greatly reduce the replacement frequency of equipment, reduce to greatest extent mounting cost and the maintenance cost of device, and assurance device long period safe and reliable operation. This shell-and-plate condenser comprises housing and plate core body, and plate core body is by stacked affixed rear formation of multiple heat exchange plates. On housing, be processed with tower overhead gas entrance, recirculated water entrance, circulating water outlet, condensate outlet and sour gas outlet; The plate journey runner of matching board sheet core body and shell side runner, realize the cooling of tower overhead gas.
Description
Technical field
The present invention relates to a kind of lamella heat exchanger, be specifically related to the built-in shell-and-plate condenser of a kind of solvent reclamation tower top, belong to biographyHot charging is put technical field.
Background technology
Solvent regeneration tower adopts the rectifying column configuration of fractional distilling tube, liquid phase infinite reflux, enters that the rich solution of solvent regeneration tower containsMost of sour gas is resolved in tower, and the reboiler that then enters regenerator bottom is further heated desorb, and solvent liquid is obtainedTo fully regeneration. A large amount of gas phase medias of tower top are cooled to liquid phase by refrigerant in overhead condenser simultaneously, then pass through natureThe liquid phase medium of condensation is back to tower top by the mode of backflow or forced refluence. Natural back flow be utilize overhead condenser withHigh potential difference between tower refluxing opening is realized the backflow of cooling medium; Forced refluence adopts pump that transmitting power is provided.
Existing regeneration overhead condenser is deposited deficiency both ways: (1) forced refluence mode technology arrangement complexity; Natural back flowAlthough technological process is relatively simple, the bearing height of overhead condenser will, far above the overhead condenser of forced refluence, need to be takenBuild corresponding building and support, thereby bring extra-pay; And require condensation vessel volume little, lightweight. (2) tower top is coldCondenser seriously corroded. The CO that regenerator overhead gas mainly produces2-H2S-H2O can make condenser occur homogeneous corrosion, hydrogen blister,The phenomenon such as hydrogen embrittlement and stress corrosion cracking, causes condenser seriously corroded, and service life is short, and inspect and change is frequent, makes to establishStandby maintenance cost raises, and has reduced the production capacity of whole device.
Summary of the invention
In view of this, the invention provides the built-in shell-and-plate condenser of a kind of solvent reclamation tower top, this condensation vessel volume is little, lightweight,Can directly support and be arranged on regenerator inside, adopt natural back flow mode that the liquid phase medium of condensation is back to tower top, and changeHot plate sheet adopts titanium material, can greatly reduce the replacement frequency of equipment, reduces to greatest extent mounting cost and the maintenance of deviceExpense, and assurance device long period safe and reliable operation.
This shell-and-plate condenser comprises: housing and plate core body; Described plate core body comprises that two with upper sheet space pair, described plateTo being formed by two identical sheet annular heat exchange plates of structure; The surface distributed of described heat exchange plate has projection, and its ring surfaceOn be processed with two circular holes, two circular holes on two heat exchange plate ring surfaces are welded together to form respectively to plate pair; TwoTo coaxial placement, by inner circle right adjacent two plates and cylindrical welding, form plate core body with upper sheet space respectively. In plate core body,Between the centre bore of plate core body and each plate centering two plates, passage forms shell side passage, the circle of plate core body centre bore both sidesHole and plate pair and plate between runner form plate journey runner.
Described plate core body is fixedly mounted on enclosure interior, and the annular space between plate core body and housing is gas-liquid separation space;On a side end face of described housing: processing column top gas entrance in circular hole position in plate core body, described tower overhead gas entrance and shellCheng Tongdao connects; On plate core body ring surface, two positions corresponding to circular hole respectively arrange an ozzle, are used separately as recirculated water entranceAnd circulating water outlet, described recirculated water entrance and circulating water outlet and plate journey runner connect, the sealed bottom of plate journey runner; SimultaneouslyOn this side end face of housing, process sour gas outlet; On the end face of described housing opposite side, process condensate outlet; Described acidityGas outlet and condensate outlet connect with gas-liquid separation space respectively.
The diameter of described housing is the more than 1.5 times of plate core diameter.
On described housing, be provided with two condensate outlets, two condensate outlets respectively with two of T shape overflow pipe horizontal componentEnd is connected, and liquid seal device is stretched in the bottom of T shape overflow pipe vertical portion.
The surface uniform of described heat exchange plate is distributed with arc fin, is corrugated.
The surface uniform of described heat exchange plate is distributed with the protruding and ball impression of ball; Form plate to time, the ball of two heat exchange plate opposite facesRecessed corresponding with ball impression, ball is protruding protruding corresponding with ball.
Protruding and degree of depth ball impression of described ball is 2～5 millimeters, and diameter is 8～15 millimeters.
Described heat exchange plate is titanium plate.
Beneficial effect
(1) lamella heat exchanger of this kind of version can be arranged as built-in cold condenser in regeneration overhead, adopts natural back flowThe liquid phase medium of condensation is back to tower top by mode, and technological process is simple. And because lamella heat exchanger adopts titanium plate,Good corrosion resistance, can greatly reduce the replacement frequency of equipment, reduces to greatest extent mounting cost and the maintenance cost of device,And assurance device long period safe and reliable operation.
(2) at condensate outlet, overflow pipe and liquid seal device are set, guarantee condensate liquid can be discharged heat-exchange tube smoothly, simultaneously anti-Only thermal medium gas backflow in tower.
(3) heat exchange plate adopts the corrugated plating can enhanced heat exchange, and heat exchange efficiency is high.
(4) heat exchange plate adopts fourth born of the same parents plate, and the runner of the plate core body forming is thus more unimpeded, can reduce flow resistance,Increase rate of flow of fluid, reduce equipment scaling, simultaneously easy clean and maintenance, reliability and the life-span of improving equipment.
Brief description of the drawings
Fig. 1 is the built-in condenser structure schematic diagram of tower top;
Fig. 2 is the structural representation of the first hot plate sheet;
Fig. 3 is the structural representation of the second hot plate sheet;
Runner schematic diagram when Fig. 4 is the second hot plate sheet formation plate core body;
Fig. 5 is the structural representation of condenser;
Fig. 6 is condenser internal flow schematic diagram.
Wherein, 1-housing, 2-recirculated water entrance, the outlet of 3-sour gas, 4-circulating water outlet, 5-tower overhead gas entrance, 6-plateCore body, 7-condensate outlet.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described, following examples are only for moreTechnical scheme of the present invention is clearly described, and can not limits the scope of the invention with this.
The present embodiment provides a kind of solvent reclamation tower top built-in shell-and-plate condenser, comprises housing 1 and plate core body 6, plate coreBody 6 is by stacked affixed rear formation of multiple heat exchange plates. Described heat exchange plate is sheet loop configuration, at the ring surface of heat exchange plateOn be processed with two circular holes, described two circular holes are arranged in the bilateral symmetry of heat exchange plate inner circle. Two kinds in the present embodiment, are providedThe version of heat exchange plate, as shown in Figures 2 and 3. Heat exchange plate shown in Fig. 2 is corrugated plating, at heat exchange plateSurface uniform is distributed with arc fin, forms corrugated. Heat exchange plate shown in Fig. 3 is fourth born of the same parents plates, on the surface of heat exchange plateEvenly be intervally distributed with ball impression of the same size and ball protruding, protruding and degree of depth ball impression of ball is 2～5 millimeters, and diameter is 8～15 millimeters.
In the time that heat exchange plate is corrugated plating, the generation type of plate core body is: two heat exchange plates are coaxially placed, respectively by twoOn heat exchange plate ring surface, the circular hole of same position welds together, and forms plate pair; Then by multiple plates to coaxial placement,Respectively right adjacent two plates inner circle and cylindrical are welded together, form plate core body 6. The centre bore of plate core body 6 and everyBetween individual plate centering two plates, passage forms shell side passage, the circular hole of plate core body 6 centre bore both sides and plate pair and plate pairBetween runner form plate journey runner.
When heat exchange plate is fourth born of the same parents plates, the generation type of plate core body is: two heat exchange plates are coaxially placed, and makes two heat exchangeThe ball impression of plate opposite face is corresponding with ball impression, and ball is protruding protruding corresponding with ball. So circle of same position on latter two heat exchange plate ring surfaceEyelet welding is connected together, and forms plate pair; Finally by multiple plates to coaxial placement, respectively by inner circle right adjacent two plates and outerCircle welds together, and forms plate core body 6. In the plate core body 6 forming, equal in the opposite face of any two adjacent plateCorresponding with ball impression for ball impression, ball is protruding protruding corresponding with ball; As shown in Figure 4. The centre bore of plate core body 6 and each plate centering twoBetween plate, passage forms shell side passage, the circular hole of plate core body 6 centre bore both sides and plate pair and plate between runner formationPlate journey runner.
The structure of housing 1 as shown in Figure 5, the column construction that housing 1 is hollow, plate core body 6 is coaxially fixedly mounted on housing1 inside, the upper and lower surface of plate core body 6 is conflicted with the inner surface up and down of housing 1 respectively, for ensureing plate journey runner and shell side streamThe isolation in road, is positioned on the ring surface of plate core body 6 bottom heat exchange plates and does not process circular hole, makes the sealed bottom of plate journey runner.The diameter of housing 1 is 2 times of plate core body 6 diameters, thus between plate core body 6 outer circumference surfaces and housing 1 inner peripheral surfaceThe space forming is gas-liquid separation space. Upper surface at housing 1: plate core body 6 centre bore positions coaxially process circular holeAs tower overhead gas entrance 5, tower overhead gas entrance 5 connects with the shell side runner of plate core body 6; Plate core body 6 centre bore both sides circlesOzzle of the each coaxial processing in position that hole is corresponding, is used separately as recirculated water entrance 2 and circulating water outlet 4, recirculated water entrance 2Connect with circulating water outlet 4 and the plate journey runner of plate core body 6. Export at two sour gas of upper surface processing of housing 1 simultaneously3, the lower surface of housing 1 is processed with two condensate outlets 7, the outlet of described sour gas and condensate outlet all with gas-liquid separation skyBetween connect.
When use, this condenser is directly installed on to the top in regenerator, and supports by the regenerator after reinforcing. ColdTwo condensate outlets of condenser bottom are connected with the two ends of T shape overflow pipe horizontal component respectively, as shown in Figure 1. Discharge opeing is coldThe key that solidifying equipment can run well, if can not quick fluid-discharge, hydrops can flood part plate bundle, reduce heat exchanger effectivelyHeat transfer area; For this reason, in the bottom of overflow pipe vertical portion, liquid seal device is set, with ensure condensate liquid can discharge smoothly heat hand overReplace tubes. The fluid-tight of certain altitude simultaneously can also prevent thermal medium gas backflow in tower.
The operation principle of this condenser is as shown in Fig. 1 and Fig. 6: in regenerator, thermal medium (being tower overhead gas) rises at the bottom of tower, wearsToo low resistance piece rises to tower top, enters the shell side runner of condenser from tower overhead gas entrance 5; Cold medium is cooling water, from circulationWater inlet 2 enters the plate journey runner of condenser, flows out from circulating water outlet 4. The cooling water of plate journey runner and the tower of shell side runnerTop gas forms cross-current, takes away latent heat and sensible heat that tower overhead gas discharges, and it is condensate liquid that tower overhead gas is condensed into liquid state. Two of condensationThe gas-liquid separation space of phase fluid between plate core body 6 and housing 1 separates. Condensate liquid is gravitate in housing,Enter overflow pipe by condensate outlet, be back to tower tray. Sour gas, after gas-liquid separation, is discharged from sour gas outlet 3.
In order to ensure the reliability of condenser, should make two media (tower overhead gas and cooling water) not contact, do not leak, equipment mustMust seal closely. This condenser heat transfer element is titanium plate (being that heat exchange plate is titanium plate), between two plates, swashs by full-automaticPhotocoagulation forms plate core. Use full-welding plate-type version, make this condenser in performance heat-exchangers of the plate type efficient heat transferWhen performance, ensured sealing property, improved bearing capacity, device security is reliable.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art,Not departing under the prerequisite of the technology of the present invention principle, can also make some improvements and modifications, these improvements and modifications also should be considered asProtection scope of the present invention.
Claims (5)
1. the built-in shell-and-plate condenser of solvent reclamation tower top, is characterized in that, comprising: housing (1) and plate core body (6);Described plate core body (6) comprises that two with upper sheet space pair, and described plate is to there being two sheet annular heat exchange plate groups that structure is identicalBecome; The surface distributed of described heat exchange plate has projection, and on its ring surface, is processed with two circular holes, by two heat exchange plate annularsTwo circular holes on face are welded together to form respectively plate pair; Two with upper sheet space to coaxial placement, respectively by adjacent two platesRight inner circle and cylindrical welding, form plate core body (6); In plate core body (6), the centre bore of plate core body (6) and everyBetween individual plate centering two plates, passage forms shell side passage, the circular hole of plate core body (6) centre bore both sides and plate pair and plateTo between runner form plate journey runner;
Described plate core body (6) is fixedly mounted on housing (1) inside, the annular between plate core body (6) and housing (1)Space is gas-liquid separation space; On a side end face of described housing (1): circular hole position processing in plate core body (6)Tower overhead gas entrance (5), described tower overhead gas entrance (5) connects with shell side passage; Two circular holes on plate core body (6) ring surfaceCorresponding position respectively arranges an ozzle, is used separately as recirculated water entrance (2) and circulating water outlet (4), described recirculated water entrance(2) and circulating water outlet (4) and plate journey runner connect, the sealed bottom of plate journey runner; Simultaneously in this side end face of housing (1)Upper processing sour gas outlet (3); On the end face of described housing (1) opposite side, process condensate outlet (7); Described sour gasOutlet (3) and condensate outlet (7) connect with gas-liquid separation space respectively;
On described housing (1), be provided with two condensate outlets, two condensate outlets respectively with T shape overflow pipe horizontal componentTwo ends be connected, liquid seal device is stretched in the bottom of T shape overflow pipe vertical portion;
Described heat exchange plate is titanium plate.
2. the built-in shell-and-plate condenser of solvent reclamation tower top as claimed in claim 1, is characterized in that, described housing (1)Diameter be the more than 1.5 times of plate core body (6) diameter.
3. the built-in shell-and-plate condenser of solvent reclamation tower top as claimed in claim 1, is characterized in that, described heat exchange plateSurface uniform is distributed with arc fin, is corrugated.
4. the built-in shell-and-plate condenser of solvent reclamation tower top as claimed in claim 1, is characterized in that, described heat exchange plateSurface uniform is distributed with the protruding and ball impression of ball; Form plate to time, the ball impression of two heat exchange plate opposite faces is corresponding with ball impression, ball is protrudingProtruding corresponding with ball.
5. the built-in shell-and-plate condenser of solvent reclamation tower top as claimed in claim 4, is characterized in that, the protruding and ball impression of described ballThe degree of depth be 2～5 millimeters, diameter is 8～15 millimeters.
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| CN201410041123.XA CN103884201B (en) | 2014-01-27 | 2014-01-27 | The built-in shell-and-plate condenser of solvent reclamation tower top |
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| CN201410041123.XA CN103884201B (en) | 2014-01-27 | 2014-01-27 | The built-in shell-and-plate condenser of solvent reclamation tower top |
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| CN103884201B true CN103884201B (en) | 2016-05-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104197736B (en) * | 2014-09-09 | 2016-06-22 | 浙江建业化工股份有限公司 | Solvent regeneration tower tower top condensing system and lamella heat exchanger used |
| CN105423782B (en) * | 2015-12-09 | 2017-07-28 | 上海齐耀热能工程有限公司 | Low-temp methanol washing process poor rich liquid heat exchanger |
| CN106949751B (en) * | 2017-04-26 | 2018-12-14 | 宁夏凤城永生锅炉有限公司 | Dehydrogenation overhead condenser |
| CN108871003A (en) * | 2018-08-10 | 2018-11-23 | 江苏永大化工设备有限公司 | A kind of Novel unpowered integrated condensing separator |
| CN115289866B (en) * | 2022-07-21 | 2024-03-19 | 无锡市张泾压力容器制造有限公司 | Built-in lamella condenser in top of tower |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FI118391B (en) * | 2001-12-27 | 2007-10-31 | Vahterus Oy | Device for improving heat transfer in round plate heat exchangers |
| CN202188783U (en) * | 2011-07-05 | 2012-04-11 | 齐力制冷系统(深圳)有限公司 | Heat interchange core body |
| CN103063067B (en) * | 2011-10-21 | 2014-09-24 | 中国科学院过程工程研究所 | Graded heat exchange distributed control phase-change heat transfer system and heat transfer method |
| CN202582237U (en) * | 2012-04-10 | 2012-12-05 | 甘肃蓝科石化高新装备股份有限公司 | Plate-shell type condenser |
| CN203798189U (en) * | 2014-01-27 | 2014-08-27 | 中国船舶重工集团公司第七一一研究所 | Overhead built-in shell-and-plate type condenser of solvent regeneration tower |
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Address after: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee after: The 711 Research Institute of China Shipbuilding Corp. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: Shanghai Marine Diesel Engine Research Institute |
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