DE1934028A1 - Water cooled sampler for hot exhaust gas - analysis - Google Patents
Water cooled sampler for hot exhaust gas - analysisInfo
- Publication number
- DE1934028A1 DE1934028A1 DE19691934028 DE1934028A DE1934028A1 DE 1934028 A1 DE1934028 A1 DE 1934028A1 DE 19691934028 DE19691934028 DE 19691934028 DE 1934028 A DE1934028 A DE 1934028A DE 1934028 A1 DE1934028 A1 DE 1934028A1
- Authority
- DE
- Germany
- Prior art keywords
- pipe
- gas
- analysis
- exhaust gas
- water cooled
- 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.)
- Pending
Links
- 238000004868 gas analysis Methods 0.000 title claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title description 6
- 239000007789 gas Substances 0.000 claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 239000000919 ceramic Substances 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 11
- 239000003546 flue gas Substances 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims 1
- 239000000567 combustion gas Substances 0.000 abstract description 2
- 239000011810 insulating material Substances 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 7
- 239000002253 acid Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N2001/2282—Devices for withdrawing samples in the gaseous state with cooling means
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
"Wassergekühlte Gasentnahmevorrichtung zur Entnahme sehr heißer Rauchgase für gasanalytische Zwecke" Zur Entnahme sehr heißer Gase aus Feuerungen zum Zwecke der Gasanalyse werden häufig in den Feuerungsraum ragende, aus Metallrohren aufgebaute Entnahmevorrichtungen mit Wasserkühlung benutzt. Die Wasserkühlung hat den Nachteil, daß sich im Innern des Gasentnahmerohres an -der Rohrwand säurehaltiges Kondensat niederschlägt, denn das Rauchgas enthält außer Wasserdampf auch schwefelhaltige- Verbindungen. Dadurch kommt es zu gorrosionsers cheinungen , die zu einer frühzeitigen Zerstörung der Entnahmevorrichtung führen. Um dem abzuhelfen, muß -dafür gesorgt werden, daß der Säuretaupunkt von ca. 1600C im Gasentnahmerohr nicht unterschritten wird. "Water-cooled gas extraction device for extracting very hot smoke gases for gas analysis purposes "For the extraction of very hot gases from furnaces for the purpose For gas analysis, metal pipes that protrude into the combustion chamber are often used Withdrawal devices with water cooling used. The water cooling has the disadvantage that inside the gas sampling pipe on the pipe wall there is acidic condensate precipitates, because the flue gas contains not only water vapor but also sulphurous Links. This leads to signs of corrosion that lead to premature Destruction of the removal device. In order to remedy this, care must be taken ensure that the acid dew point does not fall below approx. 1600C in the gas sampling pipe will.
-1 Gemäß der deutschen Patentschrift 525.569 wird zu diesem Zw@ck bei Gasentnshmevorrichtungen ohne Wasserkühlung ein Heizmantel Vorgesehen, der so ausgebildet und mit besonderen Einrichtungen vers@h@n ist, daß eine Strömung der heißen Rauchgase aus dem Rauchkanal am Entnahme rohr entlang erzielt wird. Derartige Gasentnahmevorrichtungen sind jedoch, wenn sie aus Metallrohren bestehen, nicht für sehr hohe Temperaturen und nicht für größere Eintauchtiefen geeignet. -1 According to the German patent specification 525.569, this purpose for gas extraction devices without water cooling, a heating jacket is provided, the so trained and vers @ h @ n with special facilities is that a flow of mean Flue gases achieved from the smoke channel along the extraction pipe will. Such gas sampling devices are, however, if they are made of metal pipes exist, not for very high temperatures and not for greater immersion depths suitable.
Durch die fehlende Kühlung würden die Metallrohre bei den hohen Temperaturen erweichen, sich durchbiegen und unter Umständen abschmelzen.Due to the lack of cooling, the metal pipes would be exposed to the high temperatures soften, bend and possibly melt.
Die Erfindung bezieht sich demgegenüber auf eine Gas entnahmevorrichtung mit Wasserkühlung, welche derartigen Beschränkungen nicht unterliegt und bei der die Aufgabe, eine Unterschreitung des Säuretaupunktes im Gasentnahmerohr zu verhindern, auf besonders einfache Weise gelöst ist, und zwar erfindungsgemäß dadurch, daß unmittelbar um das zentrale Gasentnahmerohr ein rohrförmiger, von den Feuerungsgasen abgeschlossener, wärmeisolierend wirkender Raum vorgesehen ist.The invention relates to a gas sampling device with water cooling, which is not subject to such restrictions and in the the task of preventing the acid dew point in the gas sampling pipe from falling below, is solved in a particularly simple way, according to the invention in that directly around the central gas extraction pipe is a tubular, closed off from the combustion gases, heat-insulating space is provided.
Beispielsweise kann zur Wärmedämmung in den rohrförmigen Raum ein Keramikrohr eingesetst sein.For example, a thermal insulation in the tubular space Ceramic tube to be inserted.
Die Zeichnung zeigt ein Ausführungsbeisgiel der erfindungegemäßen Gasentnahmevorrichtung im Längsschnitt.The drawing shows an exemplary embodiment of the invention Gas sampling device in longitudinal section.
Die mit ihrem vorderen Teil in den Feuerungsraum einzugührende Gasentnah;evorrichtung besteht aus vier konzentrischen Metallrohren 1...4. Durch das zentrale Gasentnahmerohr 1 wird das *o aus d.m F@uerungsraum entnommen und, wie nicht weiter dargestellt ist, außerhalb des Feuerungsraumes über Anschlußleitungen und eine Kühlvorrichtung mit Kondensatabscheider zum Gasanalysegerät geführt. Die Stirnflächen des Gasentnahmerohres 1 und des Rohres 2 sind an der Spitze der Entnahmevorrichtung miteinander verschweißt. Der durch beide Rohre gebildete zylindrische Hohlraum 5 ist mit einem wärmedämmenden Stoff von fester Beschaffenheit, beispielsweise mit Glaswolle, ausgefüllt. Die äußeren Rohre 3 und 4 dienen zum Zu- und Abführen des Kühlwassers, das durch den Stutzen 6 in den Raum zwischen Rohr 3 und Rohr 4 eintritt und zur Spitze der Gasentnahmevorrichtung strömt, dort durch Offnungen im Rohr 3 in den Raum zwischen Rohr 2 und 3 gelangt, in dem es zurückfließt und aus der Vorrichtung durch den Stutzen 7 austritt. In den Raum zwischen Gasentnahmerohr 1 und Rohr 2 kann auch ein wärmeisolierendes Keramikrohr, z. B. aus Aluminiumoxyd eingeführt werden.The gas extraction device to be introduced into the furnace with its front part consists of four concentric metal tubes 1 ... 4. Through the central gas extraction pipe 1 the * o is taken from the room and, how not Further is shown outside the furnace via connecting lines and a cooling device led to the gas analyzer with a condensate separator. The end faces of the gas sampling tube 1 and the tube 2 are welded together at the tip of the removal device. The cylindrical cavity 5 formed by both tubes is provided with a heat insulating one Solid material, for example filled with glass wool. The outer Pipes 3 and 4 are used to supply and discharge the cooling water that passes through the nozzle 6 enters the space between tube 3 and tube 4 and to the tip of the gas sampling device flows, there passes through openings in pipe 3 into the space between pipes 2 and 3, in which it flows back and emerges from the device through the nozzle 7. In the space between gas sampling pipe 1 and pipe 2 can also be a heat-insulating ceramic pipe, z. B. be introduced from aluminum oxide.
Das in den Raum zwischen Gasentnahmerohr 1 und Rohr 2 eingebrachte wärmeisolierende Material bewirkt, daß das Gasentnahmerohr durch das Kühlwasser nicht unter den Säuretaupunkt von etwa 1600C abgekühlt wird, wodurch die Kondensation säurehaltiger Rauchgasbestandteile unterbleibt. Ihre Abscheidung wird sodann in einer an die Gasentnahmevorrichtung angeschossenen speziell dafür vorgesehenen Kühlvorrichtung vorgenommen.The one introduced into the space between gas sampling pipe 1 and pipe 2 heat insulating material causes the gas sampling pipe through the cooling water is not cooled below the acid dew point of about 1600C, thereby causing condensation acidic flue gas components are omitted. Your deposition is then in a specially provided cooling device attached to the gas extraction device performed.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691934028 DE1934028A1 (en) | 1969-07-04 | 1969-07-04 | Water cooled sampler for hot exhaust gas - analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691934028 DE1934028A1 (en) | 1969-07-04 | 1969-07-04 | Water cooled sampler for hot exhaust gas - analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1934028A1 true DE1934028A1 (en) | 1971-01-14 |
Family
ID=5738906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19691934028 Pending DE1934028A1 (en) | 1969-07-04 | 1969-07-04 | Water cooled sampler for hot exhaust gas - analysis |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1934028A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4630479A (en) * | 1984-05-17 | 1986-12-23 | Bergwerksverband Gmbh | Sampling device for solids in a pressurized reactor |
| US5092183A (en) * | 1989-03-14 | 1992-03-03 | Dragerwerk Aktiengesellschaft | Device for cooling testing tubes |
| EP1467195A1 (en) * | 2003-04-07 | 2004-10-13 | Sobotta GmbH Sondermaschinenbau | Probe for extracting a gas sample |
-
1969
- 1969-07-04 DE DE19691934028 patent/DE1934028A1/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4630479A (en) * | 1984-05-17 | 1986-12-23 | Bergwerksverband Gmbh | Sampling device for solids in a pressurized reactor |
| US5092183A (en) * | 1989-03-14 | 1992-03-03 | Dragerwerk Aktiengesellschaft | Device for cooling testing tubes |
| EP1467195A1 (en) * | 2003-04-07 | 2004-10-13 | Sobotta GmbH Sondermaschinenbau | Probe for extracting a gas sample |
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