Process for introducing a filling gas into an enclosure and installation for employing same
First Claim
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1. A process for introducing a filling gas into an enclosure initially including a holding gas comprising the steps of:
- (i) introducing the filling gas into the enclosure;
(ii) extracting a specific gas initially included in the filling gas or the holding gas from a mixture collected at an outlet of the enclosure;
(iii) optionally recycling the extracted specific gas; and
(iv) purging the enclosure with a purging gas which differs from the filling gas and the holding gas before the step of introducing the filling gas into the enclosure.
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Abstract
The process for introducing a filling gas into an enclosure initially containing a holding gas includes a step of introducing the filling gas into the enclosure as well as a step of extracting a specific gas initially contained in the filling gas or the holding gas from a mixture collected at the outlet of the enclosure, and possibly a step of recycling this extracted specific gas. Before the step of introducing the filling gas, the enclosure is purged using a purging gas which differs from the fill and holding gases.
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Citations
19 Claims
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1. A process for introducing a filling gas into an enclosure initially including a holding gas comprising the steps of:
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(i) introducing the filling gas into the enclosure; (ii) extracting a specific gas initially included in the filling gas or the holding gas from a mixture collected at an outlet of the enclosure; (iii) optionally recycling the extracted specific gas; and (iv) purging the enclosure with a purging gas which differs from the filling gas and the holding gas before the step of introducing the filling gas into the enclosure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A process of employing a specific gas in an enclosure initially including a holding gas, said process comprising the steps of:
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(i) introducing a filling gas comprising the specific gas into the enclosure; wherein before the step (i) of introducing the filling gas, the enclosure is purged by means of a purging gas which differs from the filling and holding gases; (ii) extracting the specific gas from a mixture collected at an outlet of the enclosure during the step (i) of introducing the filling gas; wherein after the step (i) of introducing the filling gas, the enclosure is again purged by means of a second purging gas which differs from the filling and holding gases, before again introducing a second holding gas into the enclosure; and extracting the specific gas from the mixture collected at the outlet of the enclosure at least during the purging of the enclosure of step (ii). - View Dependent Claims (16)
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17. An installation for introducing a filling gas into an enclosure initially including a holding gas, comprising:
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(i) an enclosure for employing said filling gas, including an inlet connected to a filling gas feedpipe, an inlet connected to a purging gas feed pipe, and a discharge outlet; (ii) a source of said filling gas; (iii) a source of said purging gas; and (iv) a device for extracting a specific gas initially included in the filling gas or the holding gas, from a mixture collected at said discharge outlet, said device being connected to said discharge outlet of said enclosure; wherein said source of purging gas is chosen such that said specific gas is more easily extractable from a mixture formed of said specific gas and said purging gas than from a mixture which would be formed by said holding gas and said filling gas in the absence of said purging gas. - View Dependent Claims (18, 19)
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Specification