Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – In effluent conduit
Patent
1997-11-26
1999-08-10
Savage, Matthew O.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
In effluent conduit
210 95, 210104, 210114, 210534, 210119, 210123, 137203, B01D 17032
Patent
active
059354275
ABSTRACT:
The present invention relates to a system which makes it possible to remove undesirable liquids, generally an aqueous phase, which precipitate to the bottom of tanks for storing liquid products. Use is made of a drainage device (30) which comprises a concave body (31), a seat (26), and an interface float (8) which has a plug portion (25). This interface float (8) is designed to sink into the product and to float on the aqueous phase. As the level of the aqueous phase drops, the plug portion (25) settles sealingly on the seat (26), halting the drainage operation since all the accumulated aqueous phase has already been drained off. The drainage system may be automatic or manual. In the former case, use is made of a sensor (12) for detecting the presence of an aqueous phase and commanding the process of opening a shut-off valve (11) and allowing drainage of the accumulated aqueous phase. In the manual case, an operator periodically checks for the presence of an aqueous phase inside the storage tank (1), through a port (28) for inspecting the level. If such a phase were to accumulate, he opens a manual shut-off valve (29) so as to allow all the accumulated aqueous phase to drain away.
REFERENCES:
patent: 2626054 (1953-01-01), Henigman
patent: 2844254 (1958-07-01), Ansley
patent: 4264442 (1981-04-01), Jackson
patent: 4447321 (1984-05-01), Jackson
patent: 4611627 (1986-09-01), Eidsvoog
patent: 5139653 (1992-08-01), Ludlam
Da Silva Claudio Camilo
Francisco Edu Correa
Marinho Artur Rogerio Monteiro
Schilling Antonio Jorge Leitao
Witter Aldyr
Petoleo Brasileiro SA--Petrobras
Savage Matthew O.
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