DE1619750A1 - Flash evaporator - Google Patents

Description

Patent attorneys Dipl.-Ing. F. Weickmann, Dr. Ing.A. Weickmann

Dipl.-Ing. H. Weickmann, Dipl.-Phys. Dr. K. Fincke D1PL.-ING. F. A. Weickmann 1619750

IPO "8 MUNICH 27, DEN MOHLSTRASSE 22, CALL NUMBER 48 3921/22

WESTIITGHOUSE ELECTRIC CORPORATION, Pittsburgh, Pa, 15235, USA

Flash evaporator

The present invention "relates to relaxation evaporators and in particular to flash evaporators, in which the product is cooled before it enters the evaporator leaves.

There are many examples that the cooling water temperature and the cost of installing and operating a Cooling water supply device require a temperature in the last stage that is the temperature of the water that has been ordered by the user.

Known methods of achieving a low temperature of the liquid starting product require a final evaporator stage in which the low stage temperature is maintained. However, this in turn requires extremely large pressure relief levels, which in turn

009831/1364

right to the bottom line are very expensive. It also works known to use liquid heat exchangers in which the introduced liquid dae flu. Algae auegangproduct cools and which are also very expensive.

The basic idea behind the goal-lying invention lies in « to use a multi-stage expansion evaporator, in which the liquid gelatinous product in a simple and highly effective manner to a predetermined value is cooled.

The invention is based on a flash evaporator to generate a condensation product with a Variety of sound evaporation chamber ^ which one step, see Have negative pressure gradient against each other in order to have a liquid introduced into the chambers and flowing through them one after the other in each chamber of a partial Suspend evaporation, with condensation chambers, of each of which is connected to one of the evaporation chambers for receiving and condensing the vapor developed in the corresponding evaporation chambers stands, old a collection device that works with each of the Condensation chambera is connected to receive the vapor formed in the condensate ionekauaern, and with a device for removing the condensate from the collecting device. The ± Jitspannungsverdampfer according to the invention iut characterized in that

009831/1364

• Let provided in a cooling chamber, which is used to hold the Condensate ·· from · the collecting device In connection with »it 4-way collecting device with the cooling chamber underneath is maintained at a lower pressure than the evaporation chamber which has the lowest pressure of all Has evaporation chambers, and dafi for condensation of the steam generated in the cooling chamber is the coolant Have passed.

Details of the present invention result from calibration from the following description of a design example, referring to the accompanying drawings Is referred to. It «own»

a so-themed drawing of a multi-level Flash evaporator as an embodiment of the present invention; an alternative arrangement of the present invention; and

a preferred embodiment of the present invention.

In 7ig. 1 is a multi-stage relaxation steamer with eesirculation and regeneratiTea heat exchange, which is generally indicated with the number 10. The system uses a multitude of τοη graduated relaxation chambers, commonly associated with the large Letters A, £ and C are designated. Ide number of chambers

009831/1364 BAD ORIGINAL

depends on the tone of the example. Chamber A is the first Level and have the highest pressure. It makes bit the remaining chambers evaporator stages, in which there is a graduated negative pressure · The pressure sequence is correct near the alphabetical name, so that the Ie ti te Level C the lowest pressure (highest yakuum) in that System 10 has.

It is well known that the voltage vaporiser chambers A, B and G formed by Xetallgchäusestructures «ground

can, i.e. that they generally have the form of a parallel

she pipedon have that / a basin wall 12, a bottom wall 13, Tertikaie side wall 14 and 15, front and rear walls (not sloped) and Tertikaie have inner walls 17 and 18, which are connected to the Aufienwandstruktur to form the chambers su. Chambers A, B and C have interconnections in the form of clay slits or flow openings 21 and 22 for the liquid. These office openings are in the partitions 17 and 18, adjacent to the bottom wall 13, attached

The housing structure also defines an equal Yielsahl clay condensation chamber 27, 26 and 25 for receiving it condensable vapor that has formed in chambers A to C. The condensation rooms are in the top one Part of the housing structure and are further defined by horizontally extending shells 31, 32 and 33.

009831/1364

The "bowl", are ait eieh Yertlk & L © y8ta? E © 3E @ ßd®n thru-flow openings 34 »35 w® & 36 T6r @@ h © mt bq over steam» der eich ia & © s laEaaeiii 0 »B ii & S A upwards through the DoTuksilußlitXwsa ^ em. ia 4i © E © Bd © ssation rooms 25, 26 and 27 flow

The vertilcalen calves 17 nmd 18 sisd vieiterfei® ®lt Durehtrittsöffiiuiigea 38 Mat 39 © ^ eAmlb ä.®! ¹ SQfealoa provided so that the falling JCoaÄ @ nsat _{9 has held} the aida ia of the Se & alo 33, through the a @ s © sii®2? Te Jtei'eiits'ittsSifaMsg freely into the bowl 32 fli @@ en tema and see ait of the asgesEEffihalten K © ad @ neat ires'eiai ^ t »It SlILmBt s @ hlieSlieh through the imrefr & xltteof £ quantity 5β ia II® letst © S © fe @ le 31 eiaigf. isAeii aif? äea

d © r SafcaLe> 'y spoon i, ao Koatc®ci © t oil sos "iie

as a liquid outlet

They Ko ^ deasationerämae 25g 2§> w & ä Wl siai. with

45 ₁ 46 uai 47 (was ®uh®m & ti, mh is shown in Figo 1) Tcrselica. At? lC © aä @ asati © nsraae g§ Mldet alt c: rjQsiiert @ a Söteenstzuktiis' 45 © iaem wäsmQ & h ^ Ssreieli, ä® & allgeaeiii-®it 6 ⁸ bes @ i © toet lot.

S831 / 1364

i: .rMt2uag of the circulating fluid

The heat _s <iie with the k © ad © Hsierus <g of the steam

ist _g i®r "in these stages it is mli @ t»

the levels A *> B ₁ and C uster a gradual w @ 2? ä @ adQB IteuelE au lialt © a ₉ is siae Afcsaugvor

iarek e "iis, e suitable line 51 connected to the step © C, di @ ä © n geriag®t © a Drmek Di® einseisen ötuXea ^ .nfi imr © ii uffnuagen 54'iaiteia © ader in Sei? ie ggsoimltet«, This © Üffisaaagea eiai attached in the walls 17 uad 18, eo äfäM air Una other not koiideaeierlsaE'e oase from && i stages i? Ircli the Abeaug ^ oirientuag 50 can be removed.. '".

line guideline liquid, such as sea water or other

is under ® ^ ®ejs: .mu.m gesetst Msd in a 10 ®h eime suitable © i ^ aiige 5S © iiagsflü ti © JiS & D eastKiktiir in ÖGE What ^ ICTG S ⁹ geleitet9 where part of the öatai ^ cl :!? euaitsfea fluid ¥ @ a ä @ a system over äie liei'kisig. Ess »r @ stli @ lie wa, ä larger aesil d © r Anfiifetea liquid

toreii die aohremstaustmreia in the okesa / ^§ μξκ3. B ⁶ directed ο Di ©

k gt © ii © ffiiÄ @ nmxeine WlÜBBigke & t aieeiit jsioii ait der Sole i * ad will i.mr © li I

BATH

6 99831/1364

Vapors according to the? / # Ioe © 2? Li described above

The liquid is sunäefest EIMEA suitable (top-heater) 60 Eug © leads ₉ ä @ r a "structure 61 comprises ₉ disposed innegSiftlb a suitable vessel 62 _B of is supplied to the Esmpf or other esäiitste liquid according to the arrow 65th In the case of the heat exchange that results, the water (if steam is used) condenses, among other things, all condensate is discharged through the outlet, as the water heats up @ t &

A through the lead ^ mg 63

introduced,

Since the heated liquid has been introduced into the you @rete Kftffiser A with the highest level of pressure, some of this liquid relaxes to steam as a result of the reduced Uagebunfisdruck in the chamber. The relaxed Daapf is directed upwards through the flow opening 36 into the condensation space 27, as the arrows 67 show. The vapor is condensed through heat exchange on the heat exchange tube structure 47 and falls into the bowl. This flows through the passage opening 21 In α ie the last chamber C with the lowest. ^v sur end-

BAD ORSGINAL 009831/1364

valid evaporation.

Every evaporation process causes the liquid to hit ■ more and more concentrated or enriched with Y impurities, and collects «I finally la the last stage, i.e. in the chamber 0 »which has the lowest pressure. Chamber C tone will be the enriched liquid is pressed through line 70 by a suitable pump 71. As is known, a rope can of the enriched liquid in the system 10 suitable line "as shown in B" line 73 "can be removed, so that the fluid flowing through the system re-circulates, indicated by line 72, a tojv may not exceed the controlled consentration level

The result of the de-tensioning evaporation and the Condensation in the tension chambers and communication rooms is an essentially pure, liquid starting product. As already mentioned, the rorher becomes liquid Starting product, such as pure water, in the bowls 31, 32 and 33 are covered, as the rising vapors that in contact with the heat exchange tube structures 45, 46 and 47 come, condense there and τοη the Höhren ale condensate fall into the bowls. The pure liquid (Condensate) flows from the last shell 31 through the openings 38 and 39, which can be seen in the chamber wall.

009831/1364

The liquid starting product is collected and removed from it Sucked off the shell, which the ledge Terdampferetufβ τοη separates the last condensate space · In the present arrangement, the last evaporator stage is the Chamber C and the last condensation chamber, the condensation area 25 »The temperature of the liquid starting product β is, however, in general in the final stage higher "than is desirable for consumption"

Pig. 1 has a voltage evaporator which effective means of cooling the liquid output » This means consists of a 75t cooling chamber which is used to receive the liquid starting product via the line 41 @% 08 @ & 1 @ ss @ b

The chamber 75 may comprise a simple wall structure, weloh® through lid and bottom walls 76 and 77, through vertical side walls 78 and 79 and through front and Back walls (not sloped) formed 1st. The wall · are designed so that the chamber 75 is airtight.

Zn utäs ^ top of the chamber 75 are provided Wärmeaustauachmittel as aB a fiuhrenstniktur 80, di · only $ ali «« atis8h indicated 1st "exerts lower cable & * r structure thus formed by a Sehale 81, di · aur Shoo · des K @ b # i ^ sate » τ-m der Böhrenetruktu? 80 in dsr

BAD ORIGINAL 9831/1384

mentioned method is used.

The Kamnitr 75 is evacuated by an auxiliary pump or by Suction means 82 is maintained at a lower pressure than the KaiüEier C, which has the lowest pressure of all Has evaporation chambers. The suction device 82 removes the air and other non-condensable gases from the chamber »You can suck out the products through the Line 83 are passed into line 51 of the main suction device.

The "liquid starting product that is calibrated in the last condensation chamber 25 Iu de.j? Shell 31 has collected, can enter the chamber 75, where a part of the liquid starting product is expanded under the effect of the reduced pressure, which is maintained in the chamber 75, su steam, whereby the liquid starting product is cooled. «The relaxed rope (steam) rises in the area of the Wäxmeaustatisefcrö & i @a 80, through which a cooling liquid is passed wis £ _o 2) 1 © cooling liquid which flows through the bores 80 _? absorbs the Warn® of the steam, which therefore condenses in the ears and returns to the bowl 81 as condensate. The heat absorbed by the cooling liquid is cooled from the chamber 75 aureh the JPlüeaigksit hiaaM®g © f ühT% ₉ which aurcii the line 84 flows on »Bas d & tMX ¹ © ^

009831/1384

liquid starting product is gradually transferred over the Line 68 withdrawn for use.

FIG. 2 shows a modification of the arrangement according to FIG. 1, in which the cooling chamber 75 again forms a unit separated from the system 10 and is connected to the system. In these figures, like tremors denote like parts. In Fig. 2, the cooling liquid does not flow as a separate parallel cooling flow through the heat exchange tubes c30, but in series with the distillation cooling condenser 80 at the last discharge stage, ie to the condenser 45. The rest of the arrangement τοη Fig. 2 functions in general in the same way as described for FIG. That is to say, the chamber 75 is kept under a lower pressure by an auxiliary vacuum pump or a suction device 82 than the ventilating vapor chamber C, which has the lowest pressure among the ventilating vapor chambers. The products sucked off by the suction device 82 are passed through the line 83a into the condenser room 25 of the relaxation evaporator chamber C. The auxiliary suction device 82 could, if desired, feed the suctioned products to the feed line of the hatapt suction device £ 50, as shown in FIG.

BAD 009831/1364

gases from chamber 75 through an auxiliary suction

Gate direction and sucked into either the line 51 or the condenser space 25 are introduced, the final suction process from the system is carried out by the suction device 50

The liquid exit product from the system is further cooled in the chamber 75 · The heat is removed from the chamber 7 $ by the coolant flow through the bores 80 eu the tubes 45 into the condenser space 25 of the Entspsjumngererdampfersystema

Use the designs shown in Figs. 1 and 2 simple and highly effective coolants in the existing non-volatile evaporator systems and in new systems « where it is desirable to have a cooling chamber 75 eu, the clay is separated from the relaxation evaporator system "

In Fig. 3 an embodiment of the present invention is shown, in which the relaxation terrarium system is subdivided into two separate groups of clay relaxation vapor chambers, with chamber C forming one group and chambers A and B the other group quietly subdivided into this, including dissipating the heat from the system in a manner that describes itoeh su ·

009831/1364

In this particular embodiment of the invention, the cooling chamber 75 is an integral part of the voltage evaporator 10 and represents a simple extension of the structure which is formed by the last condenser space in the decompression evaporator system IO. The Kainmt-r 75 is defined by a side wall 85 inter alia through an intermediate wall '86 (arranged opposite the side wall), the latter also serving _{9 of} the space 25 of aos? Chamber 75 afe

You v / firmfc £ -ai3tau £ ehrÖlij? EBiitnil £ tur 4i imd 47 is ia I? Ig ·

as a L'o & del ¥ on ärei lasgea unä isi presentlieaeia parallels iieiliea von kolireii gaseigtg "which see iiorissatal? mä In a niefct i.-isiterbiO-sliesiQ®, vfeiee" ofegsli äi © rooms £ 6 irii 5? ον;? £ ρο * _{ώ 3ώ} tesi Gatgogsa / gGSStite viiäidfciM 1S> a and 15 b ex ^ steeelseiSe Ms gegeniil3ei ll © geaGeii iäiüteilc- the Eöhrenbüsdel ®üaÄüa ia iiöli &'<ss 30 URA Ii 1 "Me üjaaa-hl aei * SÖfeSHS- eii-ea (toei) is 22, representative »üie Biisä ©! Biit Wi- ^ raaaustamsQliyfoM ^ ei den iJiitsj-iiiiiiiiAoSverdaiapfGiiig äie äu ^ ea eiae large ii old relatively kleiaeia Diarcteeseer are celebrated »

BATH

Chamber 75 is in i'ig. Shown lüihrenreihen 3 long as a bundle of three _t tiich horizontal and uninterrupted!, Else by the iiaum 25 "by the 2üwisehsnwan. & US and through the chamber 75 to gegeni au-iäeii öLÄdeii Ha and 85 extend the counter Mei * 5, -sil © of the Rölirenblindel open into the Köhrentiirsii y2 «aad 95 · Me number of rows of ears

is aar repyas ^ SitaMir. At this beaoaaerei.

fo2? a dGÄ- liffitisl ^ iig extended look dl © tärmea 7? GkufQii, m ti ^ ifetus "4i eat the Koixae & D atioasraiiii. ϋΐΐ 2b &ini'CtSJiöa ^1, ώ ö ^ oaiiffii & aiicr» / else in the üühliainiifcr 7b _s un auel-i ia der Kasa-er 75 an ilühlrölirtustruktur cjo sun

lier uatere ^! £ e ± i QT i », &«; iiafcr 75 iat formed by αϊ-- Lch «which & ui- ^ ufnaiiiae det; flu ^ si ^ en iJis ^ un ^ uiJT tse aad sua Sai ^; Gia of the condensate serves _s v / ie it in v'erfeiiiüiiiig ü »It Pi & o 1 explains v / urdfe, I) i &I:; v.iüC2iemv <£ j: jd 3t is iiit Gis.fer -Jzfßiiiiia o7 ire3? & e! i6ii ₅ die siir Bt: reiile, it "ng des lii des? beiicilQ '^ A si ^ ösa. Ju & lt & si fluus:! ^. ^ :. Atiss ^ an ^ s ^ roduktes Ii- die ^ isfeale- «. 'A dieiits As already for the i'-i ^ uren 1 and ei c ^>lür" fe ^ uruG ₃ i.-ira die ' hLhmll ^ k- 15 umtgL · 0.I0 auxiliary eabsaug- "'■ srsiiGiitiiEig G2 iiaitr tliiei * iiitd ^ igtrcn bridges ^ elaalten als die iuB'GSpaösiiB ^ sksLiLKr ü _s the under- .- sa. I ütspaia ^ iix ^. = 3rd; i5 © a © 2? A ί.ώΐι "iiüörijgsües liitiS-«. On & eiista Mt ^ ilfsabSbiWe ^ ü ^ iektaag ®ü 1ο5, ΐθ '& they ΐ. ^^ SCIi ₁ Sten iroeidlsts cinfesslt ^ sii fit * / Jiuloi.'iiya

'U- J. ¹ S & ίώ ΐ ί '. ά -Ö si

! Condenser room 25, as shown in fig «2®

The unheated fresh fluid v. Is directed to the head part 93 (header) by the feed pump 58. The head part collects ¹ Yj and distributes the liquid to the plurality tone carrots * the dit Wänneaustauscher-tube bundle 80 form and "for cooling of the resulting in the cooling chamber 75 Sampfes serve» From the tube bundle OEO the supplied liquid atm Wäraeauatauachröhrenbiindel is fed in the Kondenserraum 45 . From there it is fed to the head part * where the liquid is collected in the H3hrenbüsidL @ l. From here, a part of the liquid should "lead back" to its ymell® (a _e B _a di @ Bee) line 56 sum üwe © k des ¹ v / äi'me & bfuhr aiss & em Uirmtem UG Ites head part .92 is a suitable one For the connection of the heat dissipation line 56 with the bucket line 94, the remaining "nfi larger rope of liquid part of the water exchange 46 and 47 via the head part 9 ^ SMfiHsrt" or the RönrenbUndelteil 47 becomes the plus in -tha ^ @ | if fed in part, it is vo gesaamelt. From there «IM _t3is eia« jB heater 60 ss ^ led and ia lntspansiMiM relaxation evaporation passed on, as it is in connection with the arrangement according to Pig. 1 erfeiä, which is not relaxed for the liquid

^ft AD ORIGINAL 009831/1364

Chamber B is fed through a line 95 of the relaxation Kaner. In a similar manner, the liquid starting product collected in the bowl 32 is fed to the bowl 31 via the line 96 between the expansion tubes B and Q. A conduit 97 connects the kandenier rooms 25 and 26 so that the main vent 50 can remove air and other non-condensable gases and gases from the relaxation chambers in a manner similar to that described for the arrangements of FIGS. The remainder of the system shown in FIG. 3 functions in essentially the same manner as described for FIGS. The three relaxation chambers, which are inclined in FIG. 5, are only typical of the example given. In large, multi-stage relaxation s-Terdampfersystesen, the heat dissipation part, dae in Pig. chamber G consists of three or more relaxation cells . The number depends on the size of the system.

The removal of the water caused by chamber 75 ** is effective in the way τ / that the temperature of the liquid Starting product reduced in an expansion evaporator is because the heat dissipated sound vapor to liquid westward is greater than the heat release rate v © a S * I! iaei ^ - k $ it ait liquid. When using a distillation * this type therefore iet the heat emission area

BAD ORIGINAL 0 0 9831/1364

(Wall and ear) significantly reduced, so that the cost the surface are half as large as with a corresponding arrangement, where the heat exchange between swei Liquids in front of you.

BATH ORIGINAL

Claims (1)

Claims ι Entepasiiua & STeröampf he sur l production of a condensation product with a multitude of evaporation chambers !!, which show a gradual pressure gradient in relation to each other, in order to expose "ine" in & i @ chambers and these together (turehströjseside liquid in each chamber to a partial evaporation ", sait ₉ von (ätneffl, J © d® with one of the Veräaiap £ ungekaraHi®s? m star inclusion uad Koadeiasierung <les in the developed steam in connection with at @ ht, with elforsii-sJritungj, di® with each? the iL AmSmaMsi® des in the E ves'bumden is, waa Bit eiaer äos li®ad © asatss ana äar SaHun @feae "fe ₃ fisi sia® JititillsaMaer (75) Tor ^ eseiiea is, jafmaMsiS dsa KoMesasat® © sns cios? § @ j5ia®lvorf. 31) Ίά YerfeincteEig si'ä fiasr SastBel ^ s ^^ i ^ lriaag (31) S "äiö .KäMlkaMaei ¹ (73) iiateg · © iaeai i» i ensl sm wisil than die3 ^. ^ 4,33 do dp®, siöäslgstea Snasfe laiiu ^ s ¹ allsn fsFciaü-faia-eJsss ar: i> jeiet ₀ MBi ύ & Β% ητ ZeMaem ^ iemms i @ s im, d. C? 5) oatE'öaiaäeEiQa aampfes "KSMjJsütel (SO) ^ ß £ y -I-1 / · ^: 3 ® έ are connected, that the cooling chamber (75) is connected to a HiIsabsauganlage (82) and detß the auxiliary suction system (82) an Exhauster for the cooling chamber (75) uiafaSt and this connects to the inlet for the main suction system (50). 3 expansion steam according to claim 2, characterized without the fact that the suction systems (82, 50) are designed as jet pumps 4 ·! »Tepensionevaporator according to claim t, 2 or 3«, characterized in that the coolant (80, 45, 46, 47} is a rope bucket, tubular tube, which is located in 1 chamber (75) UAA the & oafiffiaea ^ iimeteQaEi9Ha (a ^ "rattreclet that the inlet fier KüklBittel with lafileitung for the eingefüsrte contaminated sur Surchieitufig» _0, however least a rope this «! ¹ f duroh the Höhrenetniktur Terbimd" is n, vm Ae n Bempf in the EondensationsksjB & ren (a ^ * B ^ _f CJ ₁ ,) sa * mÄ the tinged liquid sti Extension of the Eunrenet structure sait de-rjjeniges. (^) who hear the ur & ek uster everything shows "" ur overhead line 4 "r inserted ^ toa P T & rbunden is BATH 009831/136 5. 1 at voltageBTerdampf er according to claim 4 _t characterized in that a first division is provided which comprises at least that evaporation chamber (A) with the highest pressure, that a second division is provided, the at least the cooling chamber (75) and that evaporation chamber (jC) with the lowest pressure comprises that lines (70, 72, 75) are provided for draining 4e *> of a part of the enriched brine from that evaporation chamber with the lowest pressure and for transferring the remaining part of the enriched brine into the cooling pipe structure, which extend through the condensation chambers (A) of the first compartment, and that outlet means (88) are provided which are connected to the conduit structure at the end of the coolant for the removal of a portion of the contaminated liquid supplied. 009831/1364