Method and apparatus for recovering from a pressurized gas a liquid fraction, in particular hydrocarbons having two or more carbon atoms
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F25J-003/06
B01D-045/16
C10L-003/10
C10L-003/12
F16K-047/12
F16K-047/08
F25J-001/00
출원번호
US-0638594
(2011-03-29)
등록번호
US-9671163
(2017-06-06)
우선권정보
IT-PI2010A0040 (2010-03-29)
국제출원번호
PCT/IB2011/000680
(2011-03-29)
§371/§102 date
20120929
(20120929)
국제공개번호
WO2011/141782
(2011-11-17)
발명자
/ 주소
Favilli, Stefano
Scibola, Luciano
출원인 / 주소
SIME SRL
대리인 / 주소
Ladas & Parry LLP
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
An expansion device having a passageway formed orderly by a tubular inlet portion, a tubular throat portion and a tubular outlet portion, with a closing element arranged in the throat portion, the closing element adapted to cause a Joule-Thomson expansion and cooling of an at least partially gaseous
An expansion device having a passageway formed orderly by a tubular inlet portion, a tubular throat portion and a tubular outlet portion, with a closing element arranged in the throat portion, the closing element adapted to cause a Joule-Thomson expansion and cooling of an at least partially gaseous fluid that is supplied at a predetermined pressure (P1), where in the inlet portion a direction means is provided for directing the fluid according to a flow direction that is generally at an angle with respect to the longitudinal axis of the inlet portion, in order to reduce the friction of the at least partially gaseous fluid when flowing through the throat portion at the closing element, in order to approximate the transformation to a reversible isentropic transformation more closely than what is possible with the known lamination valves.
대표청구항▼
1. An expansion device for an at least partially gaseous fluid, comprising: a tubular inlet portion that is arranged to receive said at least partially gaseous fluid at a predetermined inlet pressure, said tubular inlet portion having an inlet port, an inlet surface consisting of the inner surface o
1. An expansion device for an at least partially gaseous fluid, comprising: a tubular inlet portion that is arranged to receive said at least partially gaseous fluid at a predetermined inlet pressure, said tubular inlet portion having an inlet port, an inlet surface consisting of the inner surface of said tubular inlet portion, a longitudinal axis, and a decreasing cross-sectional area, starting from said inlet port;a tubular outlet portion for said at least partially gaseous fluid;a tubular throat portion between said tubular inlet portion and said tubular outlet portion, such that said tubular portions form a passageway for said at least partially gaseous fluid;wherein, in said inlet portion, a central element is arranged to direct said at least partially gaseous fluid according to a flow direction that is generally at an angle with respect to said longitudinal axis, in order to reduce the friction of said at least partially gaseous fluid while flowing through said device, in particular through said throat portion,wherein, downstream of said central element, a closing element is provided in said throat portion, said closing element adapted to cause an expansion with a pressure drop down to a predetermined discharge pressure, a cooling and a partial liquefaction of said at least partially gaseous mixture, said closing element adapted to gradually impart to said fluid a substantially swirling direction that is maintained within an inner recess of the closing element and/or within the outlet portion of the expansion device;wherein, between said central element and said tubular throat portion, a plurality of continuous helical channels is arranged extending from said tubular inlet portion up to said closing element, said helical channels are configured to impart a swirling movement to said at least partially gaseous fluid from said tubular inlet portion up to said closing element,wherein said closing element is a substantially cylindrical hollow body coaxially connected to one end of said central element opposite to said inlet port of said inlet portion, said cylindrical hollow body having a plurality of holes between an outer cylindrical surface and an inner cylindrical surface,wherein said helical channels defined by a plurality of baffles that are arranged according to said flow direction along said annular passage, said baffles having an end portion, andwherein said holes of said closing element have corresponding inlet ports that are arranged at said end portions of said baffles, respectively, in such a way that when a stream portion of said at least partially gaseous fluid leaves said channels at said baffle end portions, said stream portion achieves a swirling direction and directly enters a respective hole of said closing element maintaining said swirling direction both in said holes and in an inner recess of said closing element and in said outlet portion of said expansion device. 2. An expansion device according to claim 1, wherein said central element comprises a surface having a solid of revolution shape, in particular, an ogive-shaped surface. 3. An expansion device according to claim 1, wherein each of said baffles is integral with a respective connection surface selected between said central surface and a peripheral surface of said annular chamber. 4. An expansion device according to claim 3, wherein said respective connection surface is the same for all said baffles. 5. An expansion device according to claim 1, wherein said helical channels are arranged along respective adjacent spirals on said connection surface. 6. An expansion device according to claim 1, wherein each of said baffles is housed in a respective seat that is made on a surface of said chamber opposite to said respective connection surface, such that a fluid-tight engagement is provided between adjacent channels of said plurality of channels. 7. An expansion device according to claim 1, wherein said central element is an ogive-shaped element that is arranged to be fixedly arranged within said inlet portion, said ogive-shaped element having an axis that is arranged substantially coincident to said longitudinal axis of said inlet portion. 8. An expansion device according to claim 1, wherein said substantially cylindrical closing element is slidingly arranged within a recess of said central element, such that, as a consequence of a relative sliding movement of said closing element and of said central element, a transversal size change is produced of said throat portion that is defined between said closing element and said peripheral surface. 9. An expansion device according to claim 8, comprising an actuator for causing a sliding movement of said closing element within said recess of said central element, between a first and a second predetermined position. 10. An apparatus for carrying out a partial liquefaction by Joule-Thomson expansion of an at least partially gaseous fluid that is available at a predetermined inlet pressure, said apparatus comprising: an expansion device according to claim 1;a feeding inlet for feeding said at least partially gaseous fluid at said inlet pressure into said expansion device through said inlet port;such that, by feeding said at least partially gaseous fluid into said expansion device, an expansion and a cooling effect of said at least partially gaseous fluid takes place within said passageway, and such that said at least partially gaseous fluid forms a gas fraction and a liquid fraction according to mutual ratios that are responsive to the cooling effect, in particular, wherein said apparatus is adapted to receive, at said inlet pressure, a gas containing methane and at least one hydrocarbon with two or more carbon atoms, such that by feeding said apparatus with said gas, said at least one hydrocarbon with two or more carbon atoms is at least partially separated from said hydrocarbon gas into a liquid fraction.
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이 특허에 인용된 특허 (4)
DeFrees ; Joseph H., Adapter valve mechanism for transportation tank.
Paetzel Herbert K. (Nettetal-Hinsbeck DEX) Lindackers Rudolf (Viersen DEX) Grutesen Lothar H. M. (Nettetal DEX), Control organ for gaseous and liquid media.
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