DE583526C - Process for degassing boiler feed water using heat and activated carbon - Google Patents

Process for degassing boiler feed water using heat and activated carbon

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Publication number
DE583526C
DE583526C DE1930583526D DE583526DD DE583526C DE 583526 C DE583526 C DE 583526C DE 1930583526 D DE1930583526 D DE 1930583526D DE 583526D D DE583526D D DE 583526DD DE 583526 C DE583526 C DE 583526C
Authority
DE
Germany
Prior art keywords
feed water
activated carbon
degassing
heat
boiler feed
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
DE1930583526D
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German (de)
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.)
RUDOLF OERTEL DR ING
Original Assignee
RUDOLF OERTEL DR ING
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 RUDOLF OERTEL DR ING filed Critical RUDOLF OERTEL DR ING
Application granted granted Critical
Publication of DE583526C publication Critical patent/DE583526C/en
Expired legal-status Critical Current

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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
    • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases

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)
  • Physical Water Treatments (AREA)

Description

Es ist bekannt, daß die Aggressivität eines Speisewassers von dem Gehalt an gelösten Gasen, insbesondere dem Gehalt an Sauerstoff, abhängt. Es erweist sich daher, zumal in Hochdruckkesseln, als notwendig, ein möglichst härtefreies Wasser in möglichst weitgehend entgastem Zustand zu verwenden.It is known that the aggressiveness of a feed water from the content of dissolved Gases, in particular the content of oxygen, depends. It therefore turns out, especially in High-pressure boilers, as necessary, as hard water as possible in as much as possible to use degassed state.

Zur Durchführung der Entgasung sind verschiedene Wege bekannt. Z. B. ist schon eine Entgasung des Speisewassers bei Siedetemperatur unter normalem Druck oder — zur besseren Ausnutzung der Rauchgase — im Vakuum durchgeführt worden.Various ways are known for carrying out the degassing. E.g. there is already one Degassing of the feed water at boiling temperature under normal pressure or - for better utilization of the flue gases - carried out in a vacuum.

Es hat sich gezeigt, daß es bei Anwendung von Erhitzung besonders schwer ist, die letzten Reste an Sauerstoff aus dem Speisewasser zu entfernen; die Durchführung der Entgasung bis auf den erforderlichen geringen Sauerstoffgehalt von 0,1 mg/1 ist in offenen Entgasern oft nicht zu erreichen.It has been found that it is particularly difficult when using heating, the latter Remove residual oxygen from the feed water; the implementation of the degassing down to the required low Oxygen content of 0.1 mg / 1 is in open Degassing often cannot be achieved.

Da demnach eine Entgasung durch Erhitzung oft allein nicht weit genug durchzuführen ist, ist es -zweckmäßig, das Speisewasser einer Nachentgasung zu unterziehen.As a result, degassing by heating often cannot be carried out far enough on its own it is advisable to subject the feed water to post-degassing.

Es ist nun bekannt, Gase bei gewöhnlicher Temperatur aus Wasser oder anderen Flüssigkeiten durch Knochenkohle oder Aktivkohle ganz oder teilweise zu absorbieren. Es besteht jedoch keine Möglichkeit, dieses wirksame Entgasungsmittel in der Hitze unter normalem Druck zur Nachentgasung des Speisewassers anzuwenden, da die Absorptionsfähigkeit der Aktivkohle bei höherer Temperatur, insbesondere bei Siedetemperatur, also Druckausgleich, zu stark zurückgeht. ,It is now known to extract gases at ordinary temperature from water or other liquids to be completely or partially absorbed by bone charcoal or activated charcoal. It exists however no way of taking this effective degassing agent in the heat normal pressure to be used for post-degassing of the feed water, since the absorption capacity the activated carbon decreases too much at a higher temperature, especially at the boiling point, i.e. pressure equalization. ,

. Nach der vorliegenden Erfindung wird diese Schwierigkeit dadurch beseitigt, daß die Nachentgasung des heißen Speisewassers durch Aktivkohle unter Druck erfolgt. Zweckmäßig wird das zu diesem Zweck verwendete Aktivkohlefilter zwischen Speisepumpe und Kessel geschaltet, so daß es -unter Kesseldruck steht. Hierdurch wird der Verminderung der Absorptionsfähigkeit der Kohle entgegengewirkt. Auf diese Weise ist es auch ausgeschlossen, daß das entgaste Speisewasser nach Passieren des Aktivkohlefilters wieder Sauerstoff aufnehmen kann. Durch die Druckerhöhung werden für die Absorption der Gase durch Aktivkohle ähnliche Bedingungen geschaffen, als wenn kaltes vorentgastes Speisewasser der Nachentgasung mittels Aktivkohle unterworfen würde.. According to the present invention, this problem is eliminated in that the The hot feed water is post-degassed by means of activated carbon under pressure. Appropriate the activated carbon filter used for this purpose is switched between the feed pump and boiler so that it is under boiler pressure stands. This counteracts the reduction in the absorption capacity of the coal. In this way it is also excluded that the degassed feed water can absorb oxygen again after passing through the activated carbon filter. Through the Pressure increases are similar to conditions for the absorption of the gases by activated carbon created as if cold, pre-degassed feed water were subjected to post-degassing by means of activated carbon.

Das Aktivkohlefilter stellt, auf diese Weise auch einen Sicherheitsfaktor dar insofern, als es den Sauerstoff, welcher von dem thermisch vorentgasten heißen Wasser bei seiner Speicherung aufgenommen wird, oder den in dem Speisewasser infolge nicht richtigen Arbeitens der Entgasungsanlage verbliebenen Sauerstoff mit Sicherheit entfernt.In this way, the activated carbon filter also represents a safety factor insofar as it is the oxygen that is released from the thermally pre-degassed hot water when it is stored is absorbed, or that in the feed water as a result of improper work the oxygen remaining in the degassing system will be removed with certainty.

Nachdem das Aktivkohlefilter mit Gasen gesättigt ist, wird es durch Auskochen unter Atmosphärendruck von den aufgenommenen Gasen befreit und von neuem benutzt. UnterAfter the activated carbon filter is saturated with gases, it is boiled under Atmospheric pressure freed from the absorbed gases and used again. Under

Umständen ist es zweckmäßig, mehrere Aktivkohlefilter hintereinander und das zuletzt regenerierte als letztes zu schalten.In some circumstances it is advisable to use several activated charcoal filters one after the other and that last to switch regenerated last.

Claims (1)

Patentanspruch:Claim: Verfahren zur Entgasung von Kesselspeisewasser mittels Wärme und Aktivkohle, dadurch gekennzeichnet, daß das Speisewasser zuerst einer Entgasung durch Erhitzung bei normalem Druck oder im Vakuum unterworfen und die restliche Entgasung des heißen Speisewassers dann mittels Aktivkohle unter erhöhtem Druck ausgeführt wird.Process for degassing boiler feed water using heat and activated carbon, characterized in that the feed water first undergoes degassing by heating at normal pressure or subjected to vacuum and the remaining degassing of the hot feed water then by means of activated carbon under increased Printing is in progress.
DE1930583526D 1930-11-28 1930-11-28 Process for degassing boiler feed water using heat and activated carbon Expired DE583526C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE583526T 1930-11-28

Publications (1)

Publication Number Publication Date
DE583526C true DE583526C (en) 1933-09-05

Family

ID=6571488

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930583526D Expired DE583526C (en) 1930-11-28 1930-11-28 Process for degassing boiler feed water using heat and activated carbon

Country Status (1)

Country Link
DE (1) DE583526C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970310C (en) * 1944-07-21 1958-09-04 Bayer Ag Prevention of corrosion in steam boilers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970310C (en) * 1944-07-21 1958-09-04 Bayer Ag Prevention of corrosion in steam boilers

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