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DE966560C - Process for removing carbonic acid from steam - Google Patents

Process for removing carbonic acid from steam

Info

Publication number
DE966560C
DE966560C DEA2124D DEA0002124D DE966560C DE 966560 C DE966560 C DE 966560C DE A2124 D DEA2124 D DE A2124D DE A0002124 D DEA0002124 D DE A0002124D DE 966560 C DE966560 C DE 966560C
Authority
DE
Germany
Prior art keywords
steam
carbonic acid
evaporator
washing
liquor
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
DEA2124D
Other languages
German (de)
Inventor
Dipl-Chem Georg Krager
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.)
Atlas Werke AG
Original Assignee
Atlas Werke 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 Atlas Werke AG filed Critical Atlas Werke AG
Priority to DEA2124D priority Critical patent/DE966560C/en
Application granted granted Critical
Publication of DE966560C publication Critical patent/DE966560C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treating Waste Gases (AREA)

Description

(WiGBl. S. 175)(WiGBl. P. 175)

AUSGEGEBEN AM 22. AUGUST 1957ISSUED AUGUST 22, 1957

Zusatz zum Patent 966Addendum to patent 966

(Ges. v. 15. 7. 1951)(Ges. Of July 15, 1951)

Das Hauptpatent betrifft eine Vorrichtung zum Abscheiden von Kohlensäure aus Dampf, bei der der Dampf in einem Wäscher mit Lauge behandelt wird. Nach dem Hauptpatent sind bei Verwendung von Ablauge zur Wäsche der Waschkreislauf und der Verdampferkreislauf getrennt angeordnet, wobei, da die Aufnahmefähigkeit der Lauge beim Waschen naturgemäß durch die Umsetzung in Soda allmählich abnimmt, eine Erhöhung der Konzentration der Ablauge durch Zugabe von Fremdlauge vorgesehen ist. Der Erfindung liegt nun die Erkenntnis zugrunde, daß die in Verdampferanlagen auftretende Lauge bereits eine ähnliche Einwirkung auf den Gehalt des erzeugten Dampfes an Kohlensäure ausübt, indem hier wie dort die Spaltung der Bikarbonate durch Erhöhung der Natriumhydroxydionenkonzentration zurückgedrängt wird. Um diese Wirkung der Verdampf erlauge besser auszunutzen, wird erfindungsgemäß im Verdampfer mit erhöhter Alkalitätszahl von über iooo, vorzugsweise 2000, gearbeitet. Auf diese Weise läßt sich bereits eine weitgehende Herabsetzung des CO2-Gehaltes erzielen, so daß bei der zweckmäßig vorzunehmenden Weiterbehandlung durch Waschen des Dampfes in einem Laugewäscher nur noch ein Restgehalt an Kohlensäure vorliegt. Bei dieser Nachbehandlung kann die Verdampferlauge selbst oder Fremdlauge zur Wäsche benutztThe main patent relates to a device for separating carbon dioxide from steam, in which the steam is treated with lye in a washer. According to the main patent, when using waste liquor for washing, the washing circuit and the evaporator circuit are arranged separately, whereby, since the absorption capacity of the liquor naturally gradually decreases during washing due to the conversion into soda, an increase in the concentration of the waste liquor by adding external liquor is provided. The invention is based on the knowledge that the lye occurring in evaporator systems already has a similar effect on the carbonic acid content of the steam produced, in that here as there the splitting of the bicarbonates is suppressed by increasing the sodium hydroxide ion concentration. In order to better utilize this effect of the vaporizer liquor, according to the invention, an increased alkalinity number of over 1000, preferably 2000, is used in the vaporizer. In this way it is already possible to achieve a substantial reduction in the CO 2 content, so that when the further treatment is expediently carried out by washing the steam in a lye washer, only a residual content of carbonic acid is present. With this post-treatment, the evaporator liquor itself or external liquor can be used for washing

709 642/50709 642/50

werden. Um die gewünschte Alkalitätszahl zu erzielen, wird man dem Verdampferspeisewasser nötigenfalls noch Fremdlauge zusetzen. Gegebenenfalls kann man sich auch mit der durch erhöhte Laugekonzentration im Verdampfer erzielten Reinigung begnügen oder dieses Verfahren durch mehrmalige Verdampfung bei erhöhter Laugekonzentration wiederholen.will. In order to achieve the desired alkalinity number, the evaporator feed water is used if necessary, add external caustic solution. If necessary, one can also deal with the increased Caustic concentration in the evaporator achieved cleaning or this process Repeat multiple evaporation with increased caustic concentration.

Claims (3)

PATENTANSPBOCHE:PATENT APPROACH: i. Verfahren zur Beseitigung von Kohlensäure aus Dampf nach Patent 966 056, dadurch gekennzeichnet, daß beim Verdampfen des Wassers im Verdampfer mit erhöhter Alkalitätszahl von über 1000, vorzugsweise etwa 2000, gearbeitet wird.i. Method for removing carbon dioxide from steam according to patent 966 056, thereby characterized in that when the water evaporates in the evaporator with an increased alkalinity number of over 1000, preferably about 2000, is worked. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zur Erlangung der Alkalitätszahl von 2000 dem Verdampferspeisewasser Natronlauge zugesetzt wird.2. The method according to claim 1, characterized in that that sodium hydroxide solution is added to the evaporator feed water to achieve the alkalinity number of 2000. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Rest Kohlensäure durch Waschen des Brüdens mit Lauge in einem besonderen Wäscher beseitigt wird.3. The method according to claim 1, characterized in that that the remainder is carbonated by washing the vapors with lye in a special Scrubber is eliminated. © 709 642/50 8.57© 709 642/50 8.57
DEA2124D 1944-08-02 1944-08-02 Process for removing carbonic acid from steam Expired DE966560C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA2124D DE966560C (en) 1944-08-02 1944-08-02 Process for removing carbonic acid from steam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA2124D DE966560C (en) 1944-08-02 1944-08-02 Process for removing carbonic acid from steam

Publications (1)

Publication Number Publication Date
DE966560C true DE966560C (en) 1957-08-22

Family

ID=6919810

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA2124D Expired DE966560C (en) 1944-08-02 1944-08-02 Process for removing carbonic acid from steam

Country Status (1)

Country Link
DE (1) DE966560C (en)

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