WO1987003276A1 - Appareil pour la rediffusion d'oxygene - Google Patents

Appareil pour la rediffusion d'oxygene Download PDF

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Publication number
WO1987003276A1
WO1987003276A1 PCT/EP1986/000691 EP8600691W WO8703276A1 WO 1987003276 A1 WO1987003276 A1 WO 1987003276A1 EP 8600691 W EP8600691 W EP 8600691W WO 8703276 A1 WO8703276 A1 WO 8703276A1
Authority
WO
WIPO (PCT)
Prior art keywords
oxygen
liquid
area
line
medium
Prior art date
Application number
PCT/EP1986/000691
Other languages
German (de)
English (en)
Inventor
Hans Kern
Original Assignee
Grünbeck Wasseraufbereitung GmbH
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 Grünbeck Wasseraufbereitung GmbH filed Critical Grünbeck Wasseraufbereitung GmbH
Publication of WO1987003276A1 publication Critical patent/WO1987003276A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
    • 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

Definitions

  • the invention relates to a device for rediffusion of oxygen according to the preamble of claim 1.
  • Sauersroff causes corrosion in the ignition circuits. 5
  • the oxygen forms iron oxides (magnetite sludge), which remove the inner surface of the pipes and the boiler.
  • the oxygen is also diffused on e.g. Seals, pump seals etc. entered in the circuit due to the partial pressure difference.
  • the oxygen is removed by metering in 20 of hydrazine or hydrazine hydrate.
  • hydrazine is problematic because it is a toxic substance. Instead, substances with a lower affinity for oxygen, such as sodium sulfate, are used undesirable salting of the circuit.
  • the object of the invention is to provide a device of the type described in the introduction with which the oxygen is removed in the same way as with the addition of hydrazine, without the hydrazine having to be metered into the water.
  • FIG. 1 shows a section through a device for rediffusion.
  • FIG. 2 shows a section through an embodiment modified from the embodiment shown in FIG. 1;
  • Fig. 3 shows a heating circuit with the device according to the invention.
  • the device comprises a gas-tight, closed container 1.
  • Two areas 2 and 3 are provided, each with water-impermeable but gas-permeable walls delimiting the two sides of the areas in the form of gas-permeable membranes or, for example, ceramic walls 4, 5 or 6, 7 to the adjacent areas 8-10 are separated.
  • the layers 2, 3 form a first loading rich in which a medium with a high affinity for oxygen is provided. This medium is preferably hydrazine or hydrazine hydrate.
  • an inlet pipe 11 to be connected to a conduit is provided on the inlet side, which is passed through the layers 2, 3, each sealed by seals.
  • the inlet pipe 11 has an outlet opening 12, 13, 14 opening into each intermediate space 8, 9, 10.
  • the inlet pipe is arranged as close as possible to the side end 15 of the container.
  • An outlet pipe 17 is provided at a distance from the inlet pipe 11 and as close as possible to the opposite end 16 of the container. This is also sealed through the layers 2 and 3 and has inlet openings 18, 19, 20 in each of the areas 8, 9 and 10. The outer end of the outlet pipe can be connected to a conduit.
  • a float valve 21 is provided in an elevated position of the outlet pipe.
  • oxygen-laden liquid is brought into regions 8, 9, 10 via outlet openings 12-14 via inlet pipe 11.
  • the liquid runs along the membranes 4-7.
  • the oxygen present in the liquid diffuses through the membranes into the layers 2, 3 loaded with hydrazine.
  • the liquid then flows on through the inlet openings 18-20 and the outlet pipe 17.
  • the layers 2 and 3 delimited by the membranes 4-7 are layer-shaped.
  • regions 8-10 cylindrical or tubular it is also possible to make regions 8-10 cylindrical or tubular and to pass them between hermetically sealed regions 2 and 3 containing the hydrazine.
  • FIG. 2 differs from the embodiment shown in FIG. 1 in that the region with a great affinity for oxygen with the layers 2, 3 at its opposite ends 22, 23 via a line 24 into one Circuit is switched.
  • a circulation pump 25 and an expansion valve 26 are provided in the circuit.
  • the circulation pump 25 is operated so that the hydrazine in a direction of flow indicated by arrow 27 opposite to the liquid directed through the device and indicated by arrow 28 is directed in the countercurrent principle. This increases the speed of the exchange.
  • FIG. 3 shows a heating circuit with plastic heating pipes 29, as are typical for underfloor heating, a metallic return pipe 30 and a heating boiler 31.
  • a device described above is introduced into the circuit via the inlet pipe 11 and the outlet pipe 17. Furthermore, another such device is introduced into the circuit via inlet pipe 11 and outlet pipe 17 immediately before the input of the boiler 31.
  • the hydrazine or hydrazine hydrate hermetically sealed in the device now extracts the oxygen from the heating water at the outlet of the plastic pipes through the gas-permeable membranes, since the partial pressure of the oxygen in the heating circuit is greater than in the areas filled with hydrazine.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'appareil ci-décrit doit servir, notamment dans les circuits fermés comme les circuits de chauffage, à éliminer l'oxygène de l'eau, afin d'empêcher ainsi la corrosion des canalisations, et de la chaudière et la formation de dépôts de magnétite. A cet effet, l'appareil possède une première région (2, 3) contenant un milieu présentant une grande affinité pour l'oxygène, et une seconde région (8, 9, 10) séparée de la première par une paroi (4, 7) étanche aux liquides mais perméable aux gaz. Cette seconde région est reliée à la canalisation véhiculant le liquide à traiter.
PCT/EP1986/000691 1985-11-29 1986-11-28 Appareil pour la rediffusion d'oxygene WO1987003276A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853542329 DE3542329C1 (de) 1985-11-29 1985-11-29 Einrichtung zur Rediffusion von Sauerstoff
DEP3542329.3 1985-11-29

Publications (1)

Publication Number Publication Date
WO1987003276A1 true WO1987003276A1 (fr) 1987-06-04

Family

ID=6287242

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1986/000691 WO1987003276A1 (fr) 1985-11-29 1986-11-28 Appareil pour la rediffusion d'oxygene

Country Status (3)

Country Link
EP (1) EP0247169A1 (fr)
DE (1) DE3542329C1 (fr)
WO (1) WO1987003276A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989008227A1 (fr) * 1988-03-01 1989-09-08 Lars Grimsrud Systeme de chauffage central dont l'agencement et l'application eliminent l'oxygene de l'eau
US5078755A (en) * 1988-08-20 1992-01-07 Nitto Denko Corporation Method of removing dissolved gas from liquid
EP0427813B1 (fr) * 1989-03-07 1994-05-11 COPELAND, James C. Appareil et procede d'extraction en continu d'oxygene present dans des courants de fluides
DE10310395A1 (de) * 2003-03-07 2004-09-23 Enginion Ag Vorrichtung zur Entgasung von Speisewasser

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2141607A1 (de) * 1971-04-26 1972-11-16 Instrumentation Specialties Co., Lincoln, Nebr. (V.SLA.) Vorrichtung zur Verringerung der Konzentration eines in einer Flüssigkeit gelösten Gases
FR2340121A1 (fr) * 1976-02-03 1977-09-02 Messerschmitt Boelkow Blohm Dispositif pour la separation des gaz en vue de les extraire des liquides
DE2725721A1 (de) * 1977-06-07 1978-12-14 Hag Ag Verfahren zum stoffaustausch zwischen einem teilchenfoermigen feststoff und einem fluessigen oder gasfoermigen loesungsmittel im gegenstrom und vorrichtung zur durchfuehrung dieses verfahrens
FR2405088A1 (fr) * 1977-10-05 1979-05-04 Otsuka Chemical Co Ltd Procede pour desoxygener les gaz et l'eau
FR2428456A1 (fr) * 1978-06-15 1980-01-11 Mitsubishi Rayon Co Procede pour transferer un gaz d'un milieu a un autre

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2141607A1 (de) * 1971-04-26 1972-11-16 Instrumentation Specialties Co., Lincoln, Nebr. (V.SLA.) Vorrichtung zur Verringerung der Konzentration eines in einer Flüssigkeit gelösten Gases
FR2340121A1 (fr) * 1976-02-03 1977-09-02 Messerschmitt Boelkow Blohm Dispositif pour la separation des gaz en vue de les extraire des liquides
DE2725721A1 (de) * 1977-06-07 1978-12-14 Hag Ag Verfahren zum stoffaustausch zwischen einem teilchenfoermigen feststoff und einem fluessigen oder gasfoermigen loesungsmittel im gegenstrom und vorrichtung zur durchfuehrung dieses verfahrens
FR2405088A1 (fr) * 1977-10-05 1979-05-04 Otsuka Chemical Co Ltd Procede pour desoxygener les gaz et l'eau
FR2428456A1 (fr) * 1978-06-15 1980-01-11 Mitsubishi Rayon Co Procede pour transferer un gaz d'un milieu a un autre

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989008227A1 (fr) * 1988-03-01 1989-09-08 Lars Grimsrud Systeme de chauffage central dont l'agencement et l'application eliminent l'oxygene de l'eau
US5078755A (en) * 1988-08-20 1992-01-07 Nitto Denko Corporation Method of removing dissolved gas from liquid
EP0427813B1 (fr) * 1989-03-07 1994-05-11 COPELAND, James C. Appareil et procede d'extraction en continu d'oxygene present dans des courants de fluides
DE10310395A1 (de) * 2003-03-07 2004-09-23 Enginion Ag Vorrichtung zur Entgasung von Speisewasser
DE10310395B4 (de) * 2003-03-07 2006-08-31 Enginion Ag Vorrichtung zur Entgasung von Speisewasser

Also Published As

Publication number Publication date
EP0247169A1 (fr) 1987-12-02
DE3542329C1 (de) 1987-02-05

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