Fuel Gas Conditioning System
a technology of fuel gas and conditioning system, which is applied in the direction of combustion air/fuel air treatment, combustible gas production, turbine/propulsion fuel heating, etc., can solve the problems of increasing the cost of separate equipment, occupying considerable space, and reducing so as to increase the temperature of feed gas and reduce the pressure of feed gas
Inactive Publication Date: 2009-08-13
GAUMER +1
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Benefits of technology
[0006]In this invention, a gas conditioning system is provided that is substantially contained within a single pressure vessel. A pre-heater heater element housing is at least partially located within the pressure vessel. The pre-heater heater element housing has an inner passage with an inlet for connection to a source of feed gas and an outlet for delivering the feed gas into the interior of the pressure vessel. At least one electrical heater element is located within the inner passage of the pre-heater heater element housing for increasing the temperature of the feed gas as it flows through the pre-heater heater element housing. An expansion valve reduces the pressure of the feed gas as it flows from the pre-heater heater element housing so as to initiate condensation. A super heater housing is at least partially located within the pressure vessel and has an inlet within the interior of the pressure vessel. The super heater housing has an outlet leading exterior of the pressure vessel. A filter within the interior of the pressure vessel is in a flow path leading from the pre-heater heater element passage housing to the super heater housing for removing condensate from the feed gas. At least one electrical heater element is in the super heater housing for heating the feed gas.
Problems solved by technology
While this system works well, it takes up considerable space.
Some facilities may lack adequate space.
Also, the separate pieces of equipment add to the cost.
Method used
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[0012]Referring to FIG. 1, fuel gas conditioning system 11 includes a pressure vessel 13 having an interior chamber 12. Pressure vessel 13 is preferably cylindrical and has two closed ends 14, 16. The length of pressure vessel 13 considerably greater than its diameter. In this example, the longitudinal axis of pressure vessel 13 is horizontal.
[0013]A pre-heater unit 15 is mounted in pressure vessel 13 with its axis parallel and offset from the longitudinal axis of pressure vessel 13. Pre-heater unit 15 has a length somewhat greater than the length of pressure vessel 13 in this example, with its ends protruding past ends 14, 16 of pressure vessel 13. Pre-heater unit 15 has an outer tubular housing 17 and a concentric inner tubular housing 19, defining an annulus 21 between housings 17, 19. A plurality of electrical heater elements 23 extend longitudinally within inner housing 19.
[0014]Heater elements 23 are conventional elements, each comprising a metal tube containing an electrical ...
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A feed gas conditioner includes a pressure vessel that encloses at least part of a pre-heater. The pre-heater has an inlet for connection to a source of feed gas and an outlet for delivering the feed gas into the interior of the pressure vessel. An electrical heater element located within the pre-heater increases the temperature of the feed gas as it flows through the pre-heater. An expansion valve reduces the pressure of the feed gas as it flows from the pre-heater so as to initiate condensation. A super heater is at least partially located within the pressure vessel and has an inlet within the interior of the pressure vessel. A filter is in a flow path in the pressure vessel leading from the pre-heater heater to the super heater for removing condensate from the feed gas. An electrical heater element is in the super heater for heating the feed gas.
Description
CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority to provisional application 60 / 889,324, filed Feb. 12, 2007.FIELD OF THE INVENTION[0002]This invention relates in general to an apparatus for converting a natural gas from a feed line to a superheated, clean and dry fuel gas for a gas turbine.BACKGROUND OF THE INVENTION[0003]Gas turbines are normally supplied with a dry gas that is superheated a selected level above its due point. The super heat avoids any liquids in the gas condensing as the temperature drops.[0004]A typical conditioning system is made up of several pieces of equipment connected together by flowlines. This equipment may include a pre-heater to pre-heat the feed gas flowing into the system. An expansion valve is located in a flowline leading from the pre-heater to a gas scrubber. The expansion valve drops the temperature below the dew point of the gas. Typically, the gas scrubber comprises a cylindrical pressure vessel oriented upright, with...
Claims
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Login to View More IPC IPC(8): C01B3/02
CPCF02C7/08F02C7/224Y02T10/126F02M37/221F02M31/125Y02T10/12
Inventor MCCLANAHAN, JACK L.TIRAS, CRAIG S.
Owner GAUMER