NATURAL GAS TREATMENT PLANT Russian patent published in 2022 - IPC B01D53/47 B01D53/02 B01D53/26 

FIELD: gas industry.

SUBSTANCE: invention relates to gas industry, namely to natural gas treatment equipment and technology, and can be used in gas, oil and other industries at adsorption plants for preparation of hydrocarbon gases. Natural gas treatment plant includes a control valve, an inlet separator, adsorbers, the top of which is connected to the gas supply line, cooling gas supply line and the regeneration waste gas discharge line, and the bottom is connected to the prepared gas discharge line, the cooling gas discharge line and the regeneration gas supply line, a filtering device, a furnace, a high-pressure separator. Prepared gas discharge line is connected to filtering device. Cooling gas discharge line is connected to the furnace. Regeneration waste gas discharge line is connected to the high-pressure separator, and the cooling gas supply line is connected to the initial gas supply line upstream the throttle. Inlet separator is installed after the throttle. Gas outlet from the inlet separator is connected to the first recuperative heat exchanger. Cooling gas discharge line is connected to the furnace through the second recuperative heat exchanger. Regeneration waste gas discharge line is connected in series with second and first recuperative heat exchangers and high-pressure separator, and the regeneration waste gas discharge line from the high-pressure separator is connected to the initial gas supply line before the inlet separator. Cooling gas supply line is connected to the separator filter, the outlet of which is connected to the top of the adsorbers. High-pressure separator is connected in series to the medium and low-pressure separators, and the degassing gas discharge line from the medium-pressure separator is connected to the fuel gas line. Line of discharge low-pressure degassing gas from low-pressure separator is connected to flare line, and a propane cooler is installed on the regeneration waste gas discharge line between the first recuperative heat exchanger and the high-pressure separator. Filters are installed on the regeneration waste gas discharge line and on the cooling gas discharge line before the second recuperative heat exchanger. Degassing gas discharge line from the medium pressure separator is connected through the control valve to the additionally installed third recuperative heat exchanger, which is connected in series with the additionally installed second propane cooler through the first cooled degassing gas discharge line from the medium pressure separator and then through second cooled degassing gas discharge line from medium pressure separator with additionally installed first low-temperature separator of fuel gas, in which the discharge line BFLH is connected to the tank farm. Fuel gas first discharge line is connected through a control valve to a fuel network for own needs, and also the prepared gas line is connected through a throttle to the prepared gas part discharge line, which is connected in series to the additionally installed third recuperative heat exchanger and then through the cooled part of the prepared gas with the additionally installed second low-temperature separator of fuel gas, in which the hydrocarbon condensate discharge line through the throttle is connected to the hydrocarbon condensate discharge line from the medium pressure separator to the low-pressure separator. Second fuel gas discharge line is connected through a control valve to a fuel network for own needs.

EFFECT: invention provides the possibility of resource saving of the plant due to production of additional products of broad fraction of light hydrocarbons (BFLH) and production of additional quantity of stable condensate and fuel gas.

1 cl, 1 dwg