Compressed rich natural gas is divided into a cooling gas stream and a fuel gas stream. The cooling gas stream is depressurized. The cooling gas and the fuel gas are then heat exchanged to provide a first cooling step to the fuel gas. The cooled fuel gas continues into a second cooling step in a second heat exchanger, and then flows into a separator vessel where liquids are removed from the bottom of the separator and conditioned fuel gas exits the top of the separator. The conditioned fuel gas from the separator and produced from its influent is depressurized and heat exchanged to provide the second cooling fluid for the second heat exchanger.

A system and method for treating gas to fuel turbines by passing raw gas through an inlet pressure reducing valve to adjust the gas pressure and through a scrubber to capture liquids from the gas. Next, the gas is passed through a compressor to bring it to a pressure above that required by an inlet of a turbine and then to a post-compression aerial cooler that cools the gas to a temperature lower than a required dewpoint at fuel delivery pressure. Next, natural gas liquids are removed from the gas by passing it through a separator. A first portion of the cooled compressed gas is sent through a gas-to-gas heat exchanger, creating heated compressed gas, and a second portion of the cooled compressed gas passes through a backpressure valve. The heated compressed gas is blended with the second portion to create a fuel gas stream with a desired delivery temperature.

In one embodiment, a gas conditioning system includes a trailer chassis, an inlet valve, a chiller, a separator, a system outlet, and a dehydration agent injection system. The inlet valve may be coupled to the trailer chassis and may be configured to direct flow to a fluid conduit. The chiller may be in thermal communication with the fluid conduit and is configured to remove heat from the flow within the fluid conduit The separator may be coupled to the trailer chassis and define a separator inlet to receive flow from the fluid conduit. The separator may be configured to direct conditioned gas from the separator inlet to a first separator outlet. The system outlet may be configured to receive flow from the first separator outlet. The dehydration agent injection system includes an injector, a dehydration agent, and a reboiler.

A process for purifying a feed gas including methane and heavy hydrocarbons, including: step a): cooling the feed gas in a heat exchanger; step b): introducing the resulting into a first phase separator to produce a liquid stream depleted in methane and enriched in heavy hydrocarbons and a gas stream; step c): separating the gas stream in a membrane from which a methane-enriched permeate stream and a partially condensed residue stream exit; step d): introducing the residue stream from step c) into a second phase separator vessel in order to produce a liquid stream and a gas stream; step e): introducing at least one portion of the gas stream resulting from step d) into a JT expansion means; and step f): heating at least one portion of the expanded stream in the heat exchanger used in step a) counter-current to the feed stream in order to cool the latter.

The invention relates to a method for the manufacture of a combustible material having a lower heating value of 5.29 MWh/t or more.

According to the invention, such a method comprises continuously introducing of a predetermined volume per minute of wood fragments into a pressurised reactor; exposing the wood fragments to steam at a temperature of between 200 and 220° C. for a time of between 5 and 9 minutes, the value of said exposure time and the value of the temperature of said steam being selected so that the severity factor is between 4.05 and 4.15; continuously extracting from said reactor the same predetermined volume of wood fragments per minute, through a plurality of orifices opening into a conduit at substantially atmospheric pressure; separating said decompressed wood fragments and the residual steam extracted from said reactor, said wood fragments obtained after separation forming said combustible material.

A process and plant for natural gas liquids (NGL) recovery includes a main heat exchanger, a cold gas/liquid separator, a separation or distillation column, and an overhead gas heat exchanger. A pressurized residue gas generated from an overhead gas stream removed the top of the separation or distillation column is expanded and used as a cooling medium in the overhead gas heat exchanger and the main heat exchanger. The expanded residue gas, used as a cooling medium, is then compressed up to a pressure to be combined with the overhead stream from the separation or distillation column.

A method for conditioning natural gas for downlink applications comprising pulling raw gas; cooling the gas to a temperature within a preset temperature range; removing solid contaminants and condensed liquids from the gas; reducing gas pressure to meet the requirements of the inlet side of a compressor; controlling the rotational speed of the compressor based on data input from various flow meters; delivering the preconditioned gas to the suction side of the compressor; elevating gas pressure to achieve a desired discharge pressure; using an aerial cooler to cool the pressurized gas; delivering the pressurized gas to a separator to separate the liquids from the gas; repeating the compression, cooling and separating steps until desired temperature and pressure are achieved; cooling the gas through the use of a heat sink; removing liquids from the gas through the use of a separator; and adjusting the final gas pressure and temperature.

A process for purifying a natural gas feed gas stream including methane and hydrocarbons, including step a): cooling the feed gas stream; step b): introducing the cooled stream into a first phase separator vessel in order to produce a liquid stream and a gas stream; step c): separating the gas stream resulting from step b) in a membrane unit from which a methane-enriched permeate stream and one partially condensed residue stream enriched in hydrocarbons exit; step d): introducing the residue stream resulting from step c) into a second phase separator vessel to produce a liquid stream and a gas stream; step e): introducing at least one portion of the liquid stream resulting from step d) into a JT expansion means; step f): heating at least one portion of the expanded by introduction into the heat exchanger used in step a) counter-current to the feed stream.

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.

Provided is a gas separation device configured to separate a non-hydrocarbon gas from a feed gas containing the non-hydrocarbon gas through use of a gas separation membrane, in which a decrease in operating rate can be suppressed, and economic efficiency is satisfactory. A first membrane module (1) and a second membrane module (2) are arranged in parallel to each other with respect to supply lines for a feed gas. Gas lines for regeneration (14, 15) ((24, 25)), which are branched from a permeate gas line (13) ((23)) of the membrane module (1) ((2)), and which are joined to a feed gas line (21) ((11)) configured to supply the feed gas to the membrane module (2) ((1)), are provided. Under a state in which the feed gas is supplied to the membrane module (1), a permeate gas through the membrane module (1) is supplied, as a gas for regeneration, to the membrane module (2) through the gas lines for regeneration (14, 15). In this case, the membrane module (2) is brought into a non-operation state, and the membrane module (2) is regenerated.