Fuel gas conditioner
AssigneeMoneyhun Equipment Sales & Service Co., Inc.
InventorsDavid Moneyhun, Bernie Claydon, Evan Visser
Life of this patent
Estimating the term…
Abstract
A system and method for conditioning fuel gas comprises a separator to receive rich gas and to separate NGLs from the rich gas to produce lean fuel gas. A first valve is coupled before the separator to receive the rich gas to expand the rich gas in a throttling or Joule-Thomson effect to reduce the pressure and temperature of the rich gas for the separator. A heat exchanger is coupled before the first valve to transfer heat from the rich gas to the lean fuel gas. The system can further comprise another separator to receive rich gas to separate water from the rich gas to preprocess the rich gas. The system can further comprise a temperature control loop utilizing a slip stream from the separator, a second expansion valve, and another heat exchanger.
Claims20
A method for conditioning fuel gas, the method comprising:
- a) separating liquid from a rich gas in a first separator at a high pressure and a high temperature resulting in high-pressure and high-temperature pre-conditioned gas containing high-pressure and high-temperature hydrocarbon liquids;
- b) cooling the high-pressure and high-temperature pre-conditioned gas in a series of heat exchangers, including first and second heat exchangers;
- c) expanding the high-pressure and high-temperature pre-conditioned gas in a Joule-Thomson effect to reduce the pressure and temperature of the high-pressure and high-temperature pre-conditioned gas by passing the high-pressure and high-temperature pre-conditioned gas through a first valve resulting in low-temperature and low-pressure pre-conditioned gas;
- d) separating liquids from the low-temperature and low-pressure pre-conditioned gas in a second separator resulting in a lean fuel gas;
- e) passing the lean fuel gas through the first heat exchanger to cool the high-pressure and high-temperature pre-conditioned gas;
- and
- f) passing the liquids from the first and second separators through the second heat exchanger to cool the high-pressure and high-temperature pre-conditioned gas.
A method for conditioning fuel gas, comprising:
- a) separating liquid including water from a rich gas in a first separator at a high pressure and a high temperature, resulting in a high-pressure and high-temperature pre-conditioned gas that contains high-pressure and high-temperature hydrocarbon liquids;
- b) cooling the high-pressure and high-temperature pre-conditioned gas in a series of heat exchangers, including first and second heat exchangers;
- c) expanding the high-pressure and high-temperature pre-conditioned gas in a Joule-Thomson effect to reduce the pressure and temperature of the high-pressure and high-temperature pre-conditioned gas by passing the high-pressure and high-temperature pre-conditioned gas through a first valve resulting in a low-temperature and low-pressure pre-conditioned gas;
- d) separating liquids including natural gas liquids (NGLs) from the low-temperature and low-pressure pre-conditioned gas in a second separator resulting in a lean fuel gas;
- e) passing the lean fuel gas through the first heat exchanger to cool the high-pressure and high-temperature pre-conditioned gas;
- and
- f) passing the liquid including the water and the NGLs through the second heat exchanger to cool the high-pressure and high-temperature pre-conditioned gas.
A method for conditioning fuel gas, comprising:
- a) separating liquid including water from a rich gas in a first separator at a high-pressure and a high-temperature, resulting in high-pressure and high-temperature pre-conditioned gas;
- b) expanding the high-pressure and high-temperature pre-conditioned gas in a Joule-Thomson effect to reduce the pressure and temperature of the high-pressure and high-temperature pre-conditioned gas by passing the high-pressure and high-temperature pre-conditioned gas through a first valve resulting in a low-temperature and low-pressure pre-conditioned gas;
- c) separating liquid including natural gas liquids (NGLs) from the low-temperature and low-pressure pre-conditioned gas in a second separator to produce lean fuel gas;
- d) passing the lean fuel gas through a first heat exchanger to cool the high-pressure and high-temperature pre-conditioned gas;
- and
- e) passing separated liquid from the first and second separators through a second heat exchanger to cool the high-pressure and high-temperature pre-conditioned gas.
Dependencies are inferred from the claim text.