GAS PREPARATION INSTALLATION Russian patent published in 2018 - IPC B01D53/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to gas and oil industry, in particular to gas preparation plants using an adsorption method, and can be used in gas, oil, petrochemical, chemical industries at gas treatment facilities. Gas treatment unit includes a control valve, an inlet separator, adsorbers, a filter device, a furnace, a high pressure separator. Top of the adsorbers is connected to the feed line of the source gas, the cooling gas supply line and the regenerated saturated gas discharge line. Bottom is connected to the exhaust gas line of the prepared gas, the cooling gas outlet line and the regeneration gas line. High-pressure separator is in series connected to medium and low pressure separators. Feed gas line passes through the control valve and is connected to the inlet separator. Gas outlet from the inlet separator is connected to the first recuperative heat exchanger, the outlet of the gas from which is connected to the top of the adsorbers. Exhaust gas line of the prepared gas is connected to the filtering device. In this case, the cooling gas supply line is connected to the feed gas supply line in front of the control valve and connected to a filter separator. Cooling gas outlet line is in series connected to the filter device, the second recuperative heat exchanger and the furnace. Regeneration gas line is connected to the bottom of the adsorbers. Recovery line of the saturated regeneration gas is in series connected to a filter device, a second recuperative heat exchanger, a first recuperative heat exchanger, a propane cooler and a high pressure separator. Gas condensate discharge line from the high-pressure separator is connected through a choke to a medium-pressure separator in which the gas condensate discharge line through the reactor is connected to a low-pressure separator. Waste gas recovery line from the high pressure separator is connected to the feed gas line after the control valve in front of the inlet separator. Gas preparation unit further comprises a make-up tank, the outlet of which is connected through a methanol supply line to the saturated regeneration gas line between the first recuperative heat exchanger and the propane cooler. Methanol recovery unit, the inlet of which is connected to the service water discharge line from the high-pressure separator, and the outlet is connected through a supply line of regenerated methanol with a saturated regeneration gas line between the first recuperative heat exchanger and the propane cooler and contains the input recuperative heat exchanger communicated to each other. Upper part of the distillation column is communicated with the air-cooling unit, the reflux tank and the pump communicated with the distillation column and the recovery line of the recovered methanol. Lower part of the distillation column through the technical water withdrawal line is sequentially communicated with a reboiler, a pump and an input recuperative heat exchanger.

EFFECT: technical result is an increase in the yield of liquid hydrocarbons and elimination of formation of hydrates.

1 cl, 2 dwg