FR2521300A1 - LPG aq. pollution detection and elimination - by observation of samples passed over water soluble colourant blocks of e.g. methylene blue - Google Patents
LPG aq. pollution detection and elimination - by observation of samples passed over water soluble colourant blocks of e.g. methylene blue Download PDFInfo
- Publication number
- FR2521300A1 FR2521300A1 FR8202161A FR8202161A FR2521300A1 FR 2521300 A1 FR2521300 A1 FR 2521300A1 FR 8202161 A FR8202161 A FR 8202161A FR 8202161 A FR8202161 A FR 8202161A FR 2521300 A1 FR2521300 A1 FR 2521300A1
- Authority
- FR
- France
- Prior art keywords
- lpg
- tube
- vessel
- blocks
- tap
- 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.)
- Withdrawn
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 12
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 title claims abstract 3
- 229960000907 methylthioninium chloride Drugs 0.000 title claims abstract 3
- 238000001514 detection method Methods 0.000 title 1
- 230000008030 elimination Effects 0.000 title 1
- 238000003379 elimination reaction Methods 0.000 title 1
- 239000003915 liquefied petroleum gas Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 3
- 238000007872 degassing Methods 0.000 abstract description 2
- 238000004040 coloring Methods 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000975 dye Substances 0.000 description 6
- 239000008346 aqueous phase Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 239000001045 blue dye Substances 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000012074 organic phase Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical class CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012223 aqueous fraction Substances 0.000 description 1
- 235000013844 butane Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical class CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 235000013849 propane Nutrition 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/225—Gaseous fuels, e.g. natural gas
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Biochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
Description
La présente invention se rapporte aux dispositifs de détection delta présence de liquides aqueux dans du gaz de pétrole liquéfié. The present invention relates to devices for detecting the presence of aqueous liquids in liquefied petroleum gas.
Les butanes et propanes commerciaux livrés en phase liquide dans les raffineries, à partir de camions, wagons ou oléoducs, peuvent être pollués accidentellement, c'est-à-dire contenir, en petites quantités, des produits solides ou liquides indésirables. C'est ainsi que des particules solides peuvent revêtir la forme de limaille de fer ou d'ébonite en poudre, etc., dont on peut, en principe, se debarrasser, plus ou moins aisément et efficacement, dans le transport du gaz de pétrole liquéfié, à l'aide de filtres. Commercial butanes and propanes delivered in liquid phase to refineries, from trucks, wagons or pipelines, can be accidentally polluted, that is to say contain, in small quantities, unwanted solid or liquid products. This is how solid particles can take the form of iron filings or powdered ebonite, etc., which can, in principle, be more or less easily and efficiently removed in the transport of petroleum gas. liquefied, using filters.
Ces derniers comportent généralement des matériaux à faibles passages libres, variant entre quelques microns et quelques dizaines de microns.The latter generally comprise materials with low free passages, varying between a few microns and a few tens of microns.
En ce qui concerne les polluants liquides, tels que la soude (NaOH), en solution aqueuse, provenant le cas échéant de traitements en raffineries, ou encore tels que l'eau (ho), émanant de diverses origines, la séparation est plus délicate, sinon impossible en exploitation, étant donné que l'on se trouve en présence de deux ou de plusieurs fluides liquides non miscibles, mis en contact intime et entraînés mécaniquement. Peu de caractéristiques physiques visibles à l'oeil nu différencient vraiment les gaz de pétrole liquéfiés de ces fractions aqueuses indésirables. En particulier, les phases sont toutes deux incolores et limpides. As regards liquid pollutants, such as sodium hydroxide (NaOH), in aqueous solution, possibly coming from refinery treatments, or even such as water (ho), emanating from various origins, the separation is more delicate , otherwise impossible in operation, since one is in the presence of two or more immiscible liquid fluids, brought into intimate contact and mechanically driven. Few physical characteristics visible to the naked eye really differentiate liquefied petroleum gases from these unwanted aqueous fractions. In particular, the phases are both colorless and clear.
I1 serait pourtant très utile de pouvoir se rendre compte aisément de la présence de ces polluants liquides dans du gaz de pétrole liquéfié, afin de les en éliminer, surtout quand ce gaz de pétrole liquéfié doit être transvasé dans des réservoirs en aluminium, métal sensible à l'action corrosive de la soude, très utilisées pour leur faible poids, notamment pour les ascensions en montgolfières. However, it would be very useful to be able to easily appreciate the presence of these liquid pollutants in liquefied petroleum gas, in order to eliminate them, especially when this liquefied petroleum gas must be transferred into aluminum tanks, a metal sensitive to the corrosive action of soda, widely used for their low weight, especially for balloon ascents.
L'invention vise un dispositif simple permettant de détecter à l'oeil nu la présence de polluants liquides dans du gaz de pétrole liquéfié et de les en éliminer. The invention relates to a simple device making it possible to detect with the naked eye the presence of liquid pollutants in liquefied petroleum gas and to eliminate them therefrom.
Suivant l'invention, le dispositif comprend un récipient ayant une entrée et une sortie et contenant un colorant, à l'étant solide, soluble dans l'eau et insoluble dans du gaz de pétrole liquéfié, la sortie du récipient communiquant avec un tube transparent dont le bas peut être fermé. According to the invention, the device comprises a container having an inlet and an outlet and containing a dye, being a solid, soluble in water and insoluble in liquefied petroleum gas, the outlet of the container communicating with a transparent tube. whose bottom can be closed.
De préférence, le colorant est sous forme de blocs compacts Ee colorant bleu dit "eau-bleue". La phase aqueuse en dissout et se colore. On la distingue alors nettement dans le tube transparent de la phase supérieure incolore. Preferably, the dye is in the form of compact blocks Ee blue dye called "blue-water". The aqueous phase dissolves and becomes colored. It is then clearly distinguished in the transparent tube of the colorless upper phase.
On peut aussi mettre le colorant en poudre dans un sachet en une matière imperméable à l'eau, percé d'un trou d'aiguile, de manière à diminuer le plus possible la quantité de colorant qui se dissout dans l'eau, une quantité infime de colorant donnant une coloration suffisamment intense pour distinguer les phases aqueuse et organique. You can also put the powdered dye in a sachet made of a waterproof material, pierced with an oil hole, so as to minimize the amount of dye that dissolves in water, an amount tiny dye giving a sufficiently intense coloration to distinguish the aqueous and organic phases.
Au dessin annexé, donné uniquement à titre d'exemple
La figure unique est un schéma illustrant le dispositif suivant l'invention.In the accompanying drawing, given only by way of example
The single figure is a diagram illustrating the device according to the invention.
Du bas d'une citerne C, empli de gaz de pétrole liquéfié, part un conduit 1 de prélèvement sur lequel est monté un robinet 2 d'arrêt. Une lyre 3 met le conduit 1 en communication avec l'entrée d'un récipient 4 empli de blocs du colorant bleu dit "eaubleue". Ce colorant est soluble dans l'eau. Il est insoluble dans le gaz de pétrole liquéfié. La compa cité des blocs est suffisante pour qu'ils ne se délitent pas rapidement quand un courant aqueux passe sur eux. Le courant aqueux ne dissout qu'une partie superficielle des blocs. Le courant est obtenu par le fait que l'entrée du récipient 4 est ménagée au sommet de celui-ci, tandis que la sortie, par laquelle les blocs sont trop gros pour passer, est ménagée au bas du récipient 4. From the bottom of a tank C, filled with liquefied petroleum gas, leaves a sampling pipe 1 on which a stop valve 2 is mounted. A lyre 3 puts the conduit 1 in communication with the inlet of a container 4 filled with blocks of blue dye called "blueblue". This dye is soluble in water. It is insoluble in liquefied petroleum gas. The compactness of the blocks is sufficient so that they do not disintegrate quickly when an aqueous current passes over them. The aqueous current dissolves only a superficial part of the blocks. The current is obtained by the fact that the inlet of the container 4 is formed at the top of the latter, while the outlet, through which the blocks are too large to pass, is provided at the bottom of the container 4.
La sortie du récipient 4 communique par un conduit 5, muni d'un robinet 6 de dégazage, avec un tube 7 ou bouteille transparent disposé a un niveau inférieur à celui du récipient 4. Le bas du tube 7 débouche dans un conduit 8 de purge fermé par un robinet 9. The outlet of the container 4 communicates via a conduit 5, provided with a degassing tap 6, with a tube 7 or transparent bottle disposed at a level lower than that of the container 4. The bottom of the tube 7 opens into a purge conduit 8 closed by a tap 9.
On ouvre le robinet 2 et on prélève un certain volume de gaz de pétrole liquéfié, additionné d'eau. Ce volume passe par la lyre 3 de la citerne C dans le récipient 4. La phase aqueuse dissout du colorant bleu. Plus dense que la phase organique, elle s'accumule au bas du tube 7 transparent. On voit nettement dans le tube 7 une phase aqueuse inférieure bleue et une phase organique supérieure incolore
On ferme le robinet 2 si on ne l'a pas déjà fait précédemment. On vidange le tube 7 en ouvrant le robinet 9. On referme le robinet 9 et on ouvre le robinet 2. Un nouveau prélèvement de gaz de pétrole liquéfié traverse le dispositif. Si le gaz de pétrole liquéfié de la citerne C contient encore de l'eau, la phase inférieure dans le tube 7 sera colorée. Dès que la phase inférieure n'est plus colorée, on sait que le gaz de pétrole liquéfié contenu dans la citerne C est anhydre, puisque, en raison de leur densité, les solutions aqueuses se trouvent dans la partie basse des citernes. Tap 2 is opened and a certain volume of liquefied petroleum gas is added, with water added. This volume passes through the lyre 3 of the tank C in the container 4. The aqueous phase dissolves the blue dye. Denser than the organic phase, it accumulates at the bottom of the transparent tube 7. We can clearly see in tube 7 a lower blue aqueous phase and a colorless upper organic phase
Tap 2 is closed if you have not done so previously. The tube 7 is drained by opening the valve 9. The valve 9 is closed and the valve is opened 2. A new sample of liquefied petroleum gas passes through the device. If the liquefied petroleum gas from tank C still contains water, the lower phase in tube 7 will be colored. As soon as the lower phase is no longer colored, it is known that the liquefied petroleum gas contained in tank C is anhydrous, since, because of their density, the aqueous solutions are found in the lower part of the tanks.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8202161A FR2521300A1 (en) | 1982-02-10 | 1982-02-10 | LPG aq. pollution detection and elimination - by observation of samples passed over water soluble colourant blocks of e.g. methylene blue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8202161A FR2521300A1 (en) | 1982-02-10 | 1982-02-10 | LPG aq. pollution detection and elimination - by observation of samples passed over water soluble colourant blocks of e.g. methylene blue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2521300A1 true FR2521300A1 (en) | 1983-08-12 |
Family
ID=9270852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8202161A Withdrawn FR2521300A1 (en) | 1982-02-10 | 1982-02-10 | LPG aq. pollution detection and elimination - by observation of samples passed over water soluble colourant blocks of e.g. methylene blue |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2521300A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1264516A (en) * | 1960-05-09 | 1961-06-23 | Device for detecting and determining the amount of water suspended in immiscible liquids | |
| GB1116183A (en) * | 1965-03-18 | 1968-06-06 | Cav Ltd | A method and apparatus for indicating the presence of water in a fuel system |
| US3873271A (en) * | 1974-01-02 | 1975-03-25 | Exxon Research Engineering Co | Method and apparatus for detecting free water in hydrocarbon fuels |
-
1982
- 1982-02-10 FR FR8202161A patent/FR2521300A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1264516A (en) * | 1960-05-09 | 1961-06-23 | Device for detecting and determining the amount of water suspended in immiscible liquids | |
| GB1116183A (en) * | 1965-03-18 | 1968-06-06 | Cav Ltd | A method and apparatus for indicating the presence of water in a fuel system |
| US3873271A (en) * | 1974-01-02 | 1975-03-25 | Exxon Research Engineering Co | Method and apparatus for detecting free water in hydrocarbon fuels |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |