EP0035650B1 - Kontinuierlich arbeitende Verdampferanlage für kontaminierte Flüssigkeiten - Google Patents

Kontinuierlich arbeitende Verdampferanlage für kontaminierte Flüssigkeiten Download PDF

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Publication number
EP0035650B1
EP0035650B1 EP81100830A EP81100830A EP0035650B1 EP 0035650 B1 EP0035650 B1 EP 0035650B1 EP 81100830 A EP81100830 A EP 81100830A EP 81100830 A EP81100830 A EP 81100830A EP 0035650 B1 EP0035650 B1 EP 0035650B1
Authority
EP
European Patent Office
Prior art keywords
evaporator
distillate
vaporiser
concentration
columns
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
Application number
EP81100830A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0035650A3 (en
EP0035650A2 (de
Inventor
Roland Kühnel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kraftwerk Union AG
Original Assignee
Kraftwerk Union AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kraftwerk Union AG filed Critical Kraftwerk Union AG
Publication of EP0035650A2 publication Critical patent/EP0035650A2/de
Publication of EP0035650A3 publication Critical patent/EP0035650A3/de
Application granted granted Critical
Publication of EP0035650B1 publication Critical patent/EP0035650B1/de
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing
    • G21F9/08—Processing by evaporation; by distillation

Definitions

  • the present invention relates to a continuously operating evaporator system for contaminated liquids, which consists of several individual evaporator columns and condensers for the distillates formed. With the help of such a system can in a vaporizable liquid such. B. water contained impurities, the z. B. can be radioactive in nature, be separated from this.
  • a vaporizable liquid such. B. water contained impurities
  • the z. B. can be radioactive in nature, be separated from this.
  • An overview of the state of the art in this field is given in an article from the journal "Kerntechnik", 16th year, (1974), No. 4, pages 170-177. From this it can be seen that the feed solution is normally evaporated in one stage and the steam distillate is collected and the brewing batch in the evaporator is thickened until a sufficiently high concentration - compression approx. 1: 1000 - is reached. The rest of the broth was then drained off and the plant started up again. So it is a discontinuous operation
  • an evaporator system in which a plurality of evaporator columns are switched on one after the other in the flow path of the liquid to be decontaminated, in which the condensed distillates from the evaporators downstream of the first evaporator are returned to the upstream evaporator and a brewing process from each upstream evaporator is provided on the respective downstream evaporator and the condensed distillate of the first evaporator is available for further use or forwarding as practically contamination-free waste.
  • a full drying system for the brew which is already highly enriched in contaminants, can be connected to the last evaporator column.
  • the indices relate to the evaporator column 1 or 3.
  • the brewing process of the evaporator 1 is equal to the inlet to the inlet A 2 of the evaporator 2, etc.
  • the evaporator column is designated V, the inlet A i , whose concentration is a l . He will be like this long fed into the column V until the desired brewing volume S is reached, which is now brought to a boil using the heater H.
  • the amount of steam B i with the concentration b1 reaches the condenser K 1 and leaves it as the distillate D 1 .
  • This distillate has only a low level of contamination and may have to be fed to another evaporator stage of this type so that the final distillate can either be processed further or added to normal wastewater.
  • the evaporation of the column content S is driven until the residual brew A 2 with a relatively high concentration a 2 of the contaminating substances can be discharged and safely stored as waste.
  • the evaporator system shown in Fig. 2 consists of three stages I, II and III, in which the brewing volumes Si 1 S 2 and S 3 are connected in series and are continuously flowed through.
  • the evaporator columns 2 and 3 are significantly smaller than those of stage I, since the brew volume decreases sharply due to the evaporation process in the previous stages.
  • the first stage I corresponds first to the device according to FIG. 1 with the difference that the brewing process is led to the evaporator column V 2 .
  • the resulting distillate in this stage 2 D 2 the quantity of the evaporated amount of B 2 corresponds to come as reflux into the column V i is thus supplied to a re-evaporation.
  • the distillate D 3 from stage III or the evaporator column V 3 is returned to the brewing volume S 2 of stage 2. Only in the step III (or even a higher level) given to impurities highly enriched Restsudvolumen S 3, passes as waste concentrate A from the concentration of a starting to an after-dryer N. There, it is completely dried, the contaminants can then securely Repository can be supplied in a conventional manner.
  • the time-dependent brew concentration is determined from the differential equation below
  • the time-dependent concentration in the brew S is determined with the concentration a 2 . and the ratio of brewing concentration to feed concentration
  • the mean concentration in the distillate is thus and by integration within the limits of 0 to t one obtains the mean value for the concrylication of the distillate
  • a decontamination system according to the invention can of course also be constructed from a higher number of evaporator stages, the next one always being kept smaller than the previous one and thus also requiring lower heating powers.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP81100830A 1980-02-19 1981-02-05 Kontinuierlich arbeitende Verdampferanlage für kontaminierte Flüssigkeiten Expired EP0035650B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3006127 1980-02-19
DE19803006127 DE3006127A1 (de) 1980-02-19 1980-02-19 Kontinuierlich arbeitende verdampferanlage fuer kontaminierte fluessigkeiten

Publications (3)

Publication Number Publication Date
EP0035650A2 EP0035650A2 (de) 1981-09-16
EP0035650A3 EP0035650A3 (en) 1981-10-07
EP0035650B1 true EP0035650B1 (de) 1983-10-19

Family

ID=6094966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100830A Expired EP0035650B1 (de) 1980-02-19 1981-02-05 Kontinuierlich arbeitende Verdampferanlage für kontaminierte Flüssigkeiten

Country Status (5)

Country Link
EP (1) EP0035650B1 (es)
JP (1) JPS56139187A (es)
BR (1) BR8100969A (es)
DE (2) DE3006127A1 (es)
ES (1) ES8201029A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586981A (en) * 1983-08-05 1986-05-06 Vsesojuzny Nauchno-Issledovatelsky Proektno-Konstruktorsky Institut Atomnogo Energeticheskogo Mashinostroenia Method of continuous decontamination of radiocontaminated liquids by distillation
HU200971B (en) * 1984-09-12 1990-09-28 Magyar Asvanyolaj Es Foeldgaz Combined separation process for reducing inactive salt content of waste solutions of atomic power stations
JP6071201B2 (ja) * 2012-01-17 2017-02-01 三菱重工業株式会社 放射性廃液処理装置
JP5909096B2 (ja) * 2012-01-17 2016-04-26 三菱重工業株式会社 放射性廃液処理装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE794936A (fr) * 1972-02-02 1973-05-29 Boehler & Co Ag Geb Procede et dispositif d'evaporation de liquides, notamment de liquidesradioactifs
DE2632910C2 (de) * 1976-07-21 1982-12-02 Wiegand Karlsruhe Gmbh, 7505 Ettlingen Verfahren zum Eindampfen von Flüssigkeiten, insbesondere von radioaktiven Abwässern

Also Published As

Publication number Publication date
ES499551A0 (es) 1981-12-01
BR8100969A (pt) 1981-08-25
JPS56139187A (en) 1981-10-30
EP0035650A3 (en) 1981-10-07
EP0035650A2 (de) 1981-09-16
ES8201029A1 (es) 1981-12-01
DE3006127A1 (de) 1981-08-20
DE3161200D1 (en) 1983-11-24

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