SE175809C1

SE175809C1 -

Info

Publication number: SE175809C1
Authority: SE
Publication date: 1961-01-01

Description

KLASS 6 b:23 INT. KLASS C 12 f PATENTTID FRAN DEN 17 MARS 1958 BEVIDAT DEN 27 APRIL 1961 PUBLICERAT DEN 27 JUNI 1961 Ans. 2600/1958 den 1713 1958HOrtill en ritning T RAM.:NT, STOCKHOLM Forfarande for indunstning av sprithaltiga vatskor i kombination med spritavdrivning Foreliggande uppfinning avser ett forfarande for indunstning av sprithaltiga vatskor, sasom last sulfitavlut, i kombination med spritavdrivning fran desamma. Uppfinningen syftar till att fOrbattra varmeekonomin vid dylik indunstning i kodabination med spritavdrivning. CLASS 6 b: 23 INT. CLASS C 12 f PATENTARY TIME FROM 17 MARCH 1958 PROVIDED ON 27 APRIL 1961 PUBLISHED 27 JUNE 1961 Ans. 2600/1958 den 1713 1958HOrtil a drawing T RAM.:NT, STOCKHOLM Process for evaporation of spirit-containing water-shoes in combination with alcohol-removal The present invention relates to a process for evaporating alcohol-containing water-shoes, such as load sulphite liquor, in combination with alcohol-removal from it. The object of the invention is to improve the heat economy in such evaporation in code combination with alcohol stripping.

Forfaranclet enligt uppfinningen hestar i att den sprithaltiga vdtskan underkastas spritavdrivning i en kolonn, vilken drives med anga avdriven i en indunstare, i vilken vatskan efter avdrivningen infores, varvid kolonnen tillfores i huvudsak endast samycket dnga frau indunstaren, som dr tillrackligt for att avdriva all spriten fran vdtskan, och att den i kolonnen avdrivna sprithaltiga angan kondenseras under indirekt vErmeutbyte och kondensatet infores i en forstdrkningskolonn, som drives med resten av den i indunstaren avdrivna angan. The process according to the invention consists in that the alcohol-containing liquid is subjected to alcohol evaporation in a column, which is driven by steam in an evaporator, in which the liquid after the evaporation is introduced, the column being supplied substantially only to the steam evaporator, which is sufficient to evaporate all the alcohol. from the liquid, and that the spirit-containing vapor stripped off in the column is condensed during indirect heat exchange and the condensate is introduced into a reinforcing column, which is driven with the rest of the vapor stripped off in the evaporator.

Uppfinningen beskrives narmare i samband med bifogade ritning, som schematiskt Merger tvenne steg i en indunstningsanldggning for forfarandets genomforande pante tillhorande anordningar for forstdrkning och rektifiering av den avdrivna spriten. The invention is described in more detail in connection with the accompanying drawing, which schematically shows Merger two steps in an evaporation plant for the process of carrying out the process, associated with devices for reinforcing and rectifying the stripped spirit.

Enligt ritningen instrommar .sprithaltig last sulfitavlut frail jaseriet genom ledningen 1 och forvarmes i varmevaxlaren 2 med spritfritt kondensat, erhallet i anlaggningen. Luten fOres sedan genom ledningen 3 till en spritavdrivningskolonn 4, som Or anordnad pa och hopbyggd med en indunstningsanlaggningens forsta steg bildande indunstare 5, sd. att i indunstaren •avdriven anga stroramar upp genom kolonnen on avdriver spriten i den tillfOrda luten, varefter den salunda frd.n sprit hefriade luten strommar ned i indunstaren 5. For upphettning ay. luten i indunstaren 5 tjanar en varmevaxlare 6, genom vilken luten bringas att cirkulera med hjalp av ledningarna 7 och 8 och pumpen 9. I viirmevaxlaren 6 upphettas luten med farskanga, som tillf0- res genom ledningen 10. Fdrskangkondensatet bortgar genom ledningen 11. According to the drawing, alcohol-containing loads of sulphite effluent from the furnace flow into the line 1 and are preheated in the heat exchanger 2 with alcohol-free condensate obtained in the plant. The liquor is then passed through line 3 to a spirit stripping column 4, which is arranged on and assembled with an evaporator 5, sd, forming a first stage of the evaporation plant. that in the evaporator • driven enter stream frames up through the column on evaporates the spirit in the supplied liquor, after which the salunda frd.n spirit hefriade lye flows down into the evaporator 5. For heating ay. the liquor in the evaporator 5 serves as a heat exchanger 6, through which the liquor is circulated by means of the lines 7 and 8 and the pump 9. In the heat exchanger 6 the liquor is heated with a farge hose, which is supplied through the line 10. The feed condensate is removed through the line 11.

Indunstad lut bortgar Iran indunstaren genom ledningen 12 till ndsta indunstare 13, silken Or utrustad med varmevillare 14 med tillhorande ledningar 15 och 16 och pump 17. Den hari indunstade luten ledes genom ledningen 18 till fOljande (joke visad.e) steg i anlaggningen, medan de avdrivna angorna ledas genom ledningen 19 till fOljande stegs varmevaxlare far att tj dna som upphettningsmedium ddri. Evaporated liquor Iran removes the evaporator through line 12 to the next evaporator 13, the silk Or equipped with heat sink 14 with associated lines 15 and 16 and pump 17. The evaporated liquor is led through line 18 to the following (joke shown.e) steps in the plant, while the stripped vapors are passed through line 19 to the following stage heat exchangers to serve as a heating medium therein.

Till -varmevaxlaren 14 ledes genom ledningen 20 for upphettning av luten i det andra upphettningssteget den Iran kolonnen 4 bortgaende sprithaltiga angan. Denna avger vdrme i varmevaxlaren och kondenserar dad. Kondensatet ledes genom den ventilforsedda ledningen 21 till en expansionshehallare 22, van kondensatet skiljes frail okonclenserad anga och gas. Kondensatet uttages genom ledningarna 23 och 25 av pumpen 24 till en forstarkarkolonn 26. I ledningen 25 Or anbragt en ventil 27, som styres av en flottor 28 i behallaren 22. To the heat exchanger 14 is led through the line 20 for heating the liquor in the second heating step the Iran column 4 leaving alcohol-containing vapor. This gives off heat in the heat exchanger and condenses dad. The condensate is led through the valve-provided conduit 21 to an expansion holder 22, from which the condensate is separated from unconcentrated steam and gas. The condensate is taken out through the lines 23 and 25 of the pump 24 to an amplifier column 26. In the line 25 arranged a valve 27, which is controlled by a float 28 in the container 22.

Forstdrkarkolonnen 26 drives med i indunstaren 5 avdriven anga, som uttages frdn en punkt under kolonnen 4 och ledes genom ledningen 29 till kolonnens 26 undre del. Den i kolonnen 26 avdrivna spritangan ledes genom ledningarna 30 och 31 till en rektifikationskolonn 32, vilken drives med farskanga, som tillfores genom ledningen 33 och vars kondensat bortgdr genona ledningen 34. Den rektifierade spriten Idmnar kolonnen genom ledningen 35. For dstadkommande av ett lampligt aterflode i rektifikationskolonnen Or pd. denna anbragt en kylare 36, van i angorna kyles med kondensat av i indunstaren 13 och I efterfoljande indunstningssteg avdrivna angor, vilket tillfores genom ledningen 37. The amplifier column 26 is driven by a drive driven into the evaporator 5, which is taken from a point below the column 4 and is led through the line 29 to the lower part of the column 26. The spirit coil driven off in column 26 is passed through lines 30 and 31 to a rectification column 32, which is driven by farce, which is fed through line 33 and whose condensate removes through line 34. The rectified spirit enters the column through line 35. To provide a suitable return in the rectification column Or pd. this is fitted with a cooler 36, which is cooled in the vapors by condensate of vapors evaporated in the evaporator 13 and in subsequent evaporation steps, which is supplied through the line 37.

Kondensatet ledes fran kylaren 36 genom ledningen 38 till en kondensor 89, van i den i behallaren 22 frail spritangkondensatet av- 2— — skilda och genom ledningen 40 tillforda angan kondenseras. Fran kondensorn 39 ledes darefter lutangkondensatet genom ledningen 41 tillsammans med det frail fOrstarkarens 26 botten kommande fran sprit befriade kondensatet, vilket utta.ges av pumpen 42 och instrommar genom ledningen 43 i ledningen 41, till varmevaxlaren 2 for att dar forvarma den ingaende luten, sa.som ovan namnts. The condensate is passed from the cooler 36 through the conduit 38 to a condenser 89, used in the spirit condensate separated in the container 22 and supplied through the conduit 40. From the condenser 39 the lutein condensate is then passed through the line 41 together with the bottom of the frail booster 26 coming from the spirit-free condensate, which is taken out by the pump 42 and flows in through the line 43 in the line 41, to the heat exchanger 2 to preheat the incoming liquor, .as mentioned above.

Det i kondensorn 39 bildade kondensatet av sprithaltiga anger fran behallaren 22 forenas darpa i avdrivaren eller forstarkaren 26 med det fran behallaren 22 avtappade kondensatet med hjalp av ledningarna 44 och 25, medan alltjamt okondenserad anga, innehallande en mindre halt sprit, genom ledningen 45 forenas med den i kolonnen 26 avdrivna a.ngan. The condensate-containing condensate formed in the condenser 39 from the container 22 is joined to the stripper in the stripper or amplifier 26 with the condensate drained from the container 22 by means of lines 44 and 25, while still uncondensed liquor, containing a smaller content of alcohol, is joined by line 45 to the a.ngan expelled in column 26.

Den beskrivna anordningen medfor vasentliga fordelar ur varmeekonomisk synpunkt. DA endast sa star mangd anga ledes genom kolonnen 4, som kraves for att avdriva spriten, blir det i -varmevaxlaren 14 bildade spritLigkondensatet icke onodigtvis utspatt med anga, och man erhaller ett spritkondensat med relativt hog sprithalt, som i fOrstarkaren 26 drives upp till en annu hogre sprithalt under utnyttjande av resten av angan fran indunstaren 5. Vidare tillvaratages den i varmevaxlaren 14 icke kondenserade restspriten pa ett formanligt satt. The described device entails significant advantages from a thermal economy point of view. Since only such a large amount of fuel is passed through the column 4 as is required to drive off the alcohol, the alcohol liquor condensate formed in the heat exchanger 14 is not unnecessarily diluted with gas, and a liquor condensate with a relatively high alcohol content is obtained, which in the booster 26 is driven up to a even higher alcohol content using the rest of the steam from the evaporator 5. Furthermore, the residual alcohol which has not been condensed in the heat exchanger 14 is recovered in a conventional manner.

Claims

Patent p:

A process for evaporating spirit-containing liquids in combination with alcohol evaporation, characterized in that the alcohol-containing water vat is subjected to alcohol evaporation in a column (4), which is driven with the indicated evaporator in a evaporator (5), into which the liquid is introduced after the evaporation, the column being fed into essentially only as much as from the evaporator, which is sufficient to expel all the alcohol from the liquid, and that the alcohol-containing alignant evaporated in the column (4) is condensed during indirect heat exchange and the condensate is introduced into a reinforcing column (26) with the remainder of the steam evaporated in the evaporator (5).

Method according to claim 1, characterized in that uncondensed residue from the condensation of the stripped spirit-containing vapor is caused to condense and that condensate formed together with the first condensate is introduced into the reinforcing column (26); while still uncondensed anga unites Hied from the reinforcement column (26) departing spirit-containing anga. Request publications: Paterltskrifter frdn Sverige 152 144, 153 155.