NATURAL GAS PROCESSING
Based on its solid experience in the design and manufacture of various gas conditioning technologies, Flargent offers complete gas processing systems and specific modular solutions to suit the specific needs of its customers.
DEW POINT CONTROL UNITS
Dew point control units are used to upgrade natural gas to pipeline quality. Given that the heavier components have been removed, this process adds value to the gas sale price. As the gas has been conditioned at dew point temperature, it improves its detonation point and can therefore be effectively used as fuel in engines, turbines, furnaces, and boilers. This conditioning may be achieved by the Joule-Thomson effect or by mechanical refrigeration.
Depending on the size of the gas flow to be treated, Flargent offers the following modules and systems to meet the specific needs of each customer:
– Input and output module
– Cooling and separation module
– Gasoline stabilization module
– Propane module
– Propane compression system
– Thermal oil system
– Flare and drain system
– Instrument air system
Flargent delivers these units as modules, fully mounted on skids; the connections between modules are made during assembly.
DEHYDRATION AND INHIBITION OF HYDRATES
Methane hydrates are solids that are formed by the interaction of methane with water under certain conditions of pressure and temperature. They are a relevant aspect for the gas industry because they have the potential to clog and damage gas pipelines.
Flargent manufactures a line of equipment that is optimized for water removal, which prevents the presence of ice, as well as the formation of hydrates and corrosion.
MERCURY REMOVAL
Raw natural gas contains significant amounts of mercury. Its removal is essential, because it is a health and environmental hazard, and promotes metal corrosion and the poisoning of catalysts.
Flargent provides equipment based on the solid scavenger system, a non-regenerative solid bed technology, which reduces the amounts of mercury present in gas flows, making it stable and safe to handle, and in conformity with the transport specifications of the gas pipeline. The reagent also allows for the joint removal of H2S and Hg when both are simultaneously present.
Flargent offers two ranges of fully bundled, skid-mounted filters, supplied with all the necessary piping and instruments.
PARTICULATE FILTERS
Particulate filters remove solid particles from gas streams, mainly for the protection of mechanical equipment, to avoid sedimentation and to minimize erosion of valves and pipes. They are also frequently used downstream of fixed beds, such as molecular or activated carbon sieves, to filter out any solid particles entrained by the treated gas flow.
COALESCING FILTERS
Coalescing filters remove small drops of liquid or aerosols present in gas streams. They are frequently used in plants where the gas flow contains liquid particles, such as:
– Water
– Condensed hydrocarbons
– Liquid sequestrants
– Glycol or other fluids
Coalescing filters may comprise one or more stages. In the case of two-stage processes, the gas enters the first stage and is fed through cartridge-type filters; in the second stage, the flow is filtered through demisters that allow the removal of the remaining liquid droplets. The droplet removal size is approximately 5 microns.
CONDENSATE STABILIZERS
When adjusting the dew point of natural gas, the gas stream is stripped of its heavy components, and highly volatile fractions with great added value are generated. This high volatility represents a problem when transporting and storing liquid hydrocarbons.
Flargent manufactures condensate stabilizers to eliminate the most volatile fractions of gasoline and other fluids, avoiding evaporation during transport and in storage.
Flargent’s condensate stabilizers include a column and a reboiler. The heat input depends on the vapor pressure required for the final product. Once stabilized, the condensate at the bottom of the column passes through an air cooler and is pumped to the storage tanks.
Flargent supplies fully bundled and skidded units,
together with all the necessary piping and instruments.
