FR2323998A1 - Automatic cleaning of installations for analysing gases - partic. useful in analysing dust-laden furnace gases - Google Patents
Automatic cleaning of installations for analysing gases - partic. useful in analysing dust-laden furnace gasesInfo
- Publication number
- FR2323998A1 FR2323998A1 FR7502115A FR7502115A FR2323998A1 FR 2323998 A1 FR2323998 A1 FR 2323998A1 FR 7502115 A FR7502115 A FR 7502115A FR 7502115 A FR7502115 A FR 7502115A FR 2323998 A1 FR2323998 A1 FR 2323998A1
- Authority
- FR
- France
- Prior art keywords
- gas
- container
- probe
- analysing
- source
- 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.)
- Granted
Links
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
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
Appts. for automatically cleaning a gas sampling probe incorporates a gas container, a source of compressed gas three electrically operated valves and a control system. The container is connected to the suction pipe leading from the sampling probe to the analyser, between the probe and the analyser. The control system brings about cyclical opening and closing of the valves. The cycle brings the press. in the container to the press. of the compressed gas source, isolates the analyser from the probe, produces a shock wave by opening the container suddenly and then re-establishes the normal suction circuit. An ejector is connected to the source of compressed gas and by fourth and fifth valves to the probe and to the container so as to purge them before re-establishing the normal suction. A sixth valve in the line between the compressed air source and the ejector is closed during the increase in press. of the container and the production of the shock wave. Used partic. of installations in which gas contg. large quantities of dust are analysed e.g. gas from furnaces, cement kilns, where water condensed from the gas being analysed or condensation of some vapours in the solid phase can block the sampling probe. The process is automatic abd avoids the shutting down and removal of some parts of the appts. to obtain access to the sampling circuit for cleaning, necessary in existing installations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7502115A FR2323998A1 (en) | 1975-01-23 | 1975-01-23 | Automatic cleaning of installations for analysing gases - partic. useful in analysing dust-laden furnace gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7502115A FR2323998A1 (en) | 1975-01-23 | 1975-01-23 | Automatic cleaning of installations for analysing gases - partic. useful in analysing dust-laden furnace gases |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2323998A1 true FR2323998A1 (en) | 1977-04-08 |
| FR2323998B1 FR2323998B1 (en) | 1978-02-24 |
Family
ID=9150234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7502115A Granted FR2323998A1 (en) | 1975-01-23 | 1975-01-23 | Automatic cleaning of installations for analysing gases - partic. useful in analysing dust-laden furnace gases |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2323998A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0095802A1 (en) * | 1982-05-28 | 1983-12-07 | CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif | Gas sampling devices |
| CN110320332A (en) * | 2019-08-07 | 2019-10-11 | 欧阳烽 | A kind of balanced type exhaust gas on-line detecting system |
| CN112955740A (en) * | 2018-11-15 | 2021-06-11 | 霍尔辛姆科技有限公司 | Method and apparatus for analyzing gas samples in rotary cement kilns |
-
1975
- 1975-01-23 FR FR7502115A patent/FR2323998A1/en active Granted
Non-Patent Citations (1)
| Title |
|---|
| NEANT * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0095802A1 (en) * | 1982-05-28 | 1983-12-07 | CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif | Gas sampling devices |
| US4497214A (en) * | 1982-05-28 | 1985-02-05 | Centre De Recherches Metallurgiques-Centrum Voor Research In De Metallurgie | Apparatus for taking gaseous samples |
| CN112955740A (en) * | 2018-11-15 | 2021-06-11 | 霍尔辛姆科技有限公司 | Method and apparatus for analyzing gas samples in rotary cement kilns |
| US20220018739A1 (en) * | 2018-11-15 | 2022-01-20 | Holcim Technology Ltd | Method for analyzing samples of a gas in a rotary cement kiln |
| CN110320332A (en) * | 2019-08-07 | 2019-10-11 | 欧阳烽 | A kind of balanced type exhaust gas on-line detecting system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2323998B1 (en) | 1978-02-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |