AT77151B - Method of making a scale dissolver and preventive agent. - Google Patents
Method of making a scale dissolver and preventive agent.Info
- Publication number
- AT77151B AT77151B AT77151DA AT77151B AT 77151 B AT77151 B AT 77151B AT 77151D A AT77151D A AT 77151DA AT 77151 B AT77151 B AT 77151B
- Authority
- AT
- Austria
- Prior art keywords
- making
- preventive agent
- scale
- scale dissolver
- boiler
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title description 2
- 230000003449 preventive effect Effects 0.000 title description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000002904 solvent Substances 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung eines Kesselsteinlöse- und Verhinderungsmittels.
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entstehen, wurde zur Bekämpfung des Kesselstoinanaatzes verwendet, jedoch erfüllte dasselbe seinen Zweck nur so unvollkommen, dass es für die Praxis un verwendbar blieb.
Der Grund dieses mangelhaften Ergebnisses war darin zu suchen, dass die in den Kessel eingeführten Abwässer schwerer waren wie das Speisewasser.
Durch vielfache Versuche ist es gelungen, ein absolut sicher wirkendes Kesselsteinlösemittel herzustellen, indem zerkleinertes Holz, dem vor dem Verkochen nater Druck das Harz entzogen wurde, mit einer Natronlauge von nur 2% verkocht wird. Die zur Verwendung gelangenden Hölzer werden vor dem Verkochen zu Zellulose der Einwirkung von Dampf in einem Kessel ausgesetzt und darauf mit trockener heisser Luft weiter behandelt. Durch diese Behandlung mit Dampf und der darauf folgenden mit trockener
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Das Verkochen erfolgt in einem mit Rührwerk versehenen Kessel unter einem Druck- von 14 Atm. mit 2%iger Natronlauge, Nach etwa zehnstündiger Kochdauer ist alle Holz zersetzt und es ist ein Präparat entstanden, dass allen Anforderungen eines sicher wir- kenden Kesselsteinlösemittels entspricht.
Die Wirkungsweise dieses Lösemittels ist nun, entgegen den bekannten, nicht chemisch, sondern mechanisch. Weil das Mittel das gleiche spezifische Gewicht wie Wasser
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festen Stein und dem Kesselblech. Die Folge hievon ist, dass der Kesselstein abgesprengt und das Kesselblech mit einer dünnen Isolationsschicht überzogen wird, die mit absoluter Sicherheit eine Neubildung des Kesselsteines verhindert. Durch Zusetzen des Lösemittels zum Kesselspeisewasser umhüllen die eingeführten Zelluloseteilchen, sobald neu zugeführtes Wasser in den Kessel tritt, die sich ausscheidenden Karbonate usw. mit einer mikroskopisch feinen Schicht, welche die Eigenschaft hat, die im Kesselwasser frei schwabenden Teile niederzuschlagen und dauernd daran haften zu bleiber.
Die Niederschlage, welche bereits mit einer Zeiluloseschicht umgeben sind werden
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**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Method of making a scale dissolver and preventive agent.
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was used to combat the Kesselstoinanaatzes, but it only served its purpose so imperfectly that it was unusable in practice.
The reason for this inadequate result was to be found in the fact that the waste water introduced into the boiler was heavier than the feed water.
Through multiple attempts, it has been possible to produce an absolutely safe scale solvent by boiling shredded wood, from which the resin was removed before boiling under pressure, with a sodium hydroxide solution of only 2%. The woods that are used are exposed to the action of steam in a kettle before they are boiled into cellulose and then treated with dry, hot air. This treatment with steam and the subsequent one with a dry one
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The cooking takes place in a kettle equipped with a stirrer under a pressure of 14 atm. with 2% sodium hydroxide solution. After about ten hours of cooking, all the wood has decomposed and a preparation has been created that meets all the requirements of a safe scale solvent.
The mode of action of this solvent is now, contrary to the known, not chemical, but mechanical. Because the agent has the same specific weight as water
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solid stone and the boiler plate. The consequence of this is that the scale is blasted off and the boiler sheet is covered with a thin layer of insulation, which with absolute certainty prevents the scale from forming again. By adding the solvent to the boiler feed water, the cellulose particles that have been introduced, as soon as the newly supplied water enters the boiler, envelops the carbonates, etc., with a microscopically fine layer, which has the property of depositing the parts floating freely in the boiler water and of sticking to them permanently .
The precipitates, which are already surrounded with a cellulose layer
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** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT77151T | 1913-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT77151B true AT77151B (en) | 1919-07-25 |
Family
ID=3598764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT77151D AT77151B (en) | 1913-10-27 | 1913-10-27 | Method of making a scale dissolver and preventive agent. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT77151B (en) |
-
1913
- 1913-10-27 AT AT77151D patent/AT77151B/en active
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