| 摘要 |
Condensate from the cold separator (5), is supplied to the three-phase separator (11) directly, without intermediate heating. Drying medium with water, gaseous hydrocarbons and condensed hydrocarbons are separated in (11). They are withdrawn quantitatively. Initially, drying medium is sent to a dewatering regenerator (27), where water is distilled-off. It is supplied hot to the three phase separator, heating it. An Independent claim is included for plant carrying out the corresponding procedure. Preferred features: Natural gas is precooled in an air cooler (1). It enters the primary of a gas/gas heat exchanger (2). Here, some drying medium is sprayed into the natural gas. Dried natural gas is supplied to the secondary. Natural gas with drying medium and water is supplied to a gas-cooled heat exchanger (3) where more drying medium is sprayed-in. The temperature of the mixture is reduced. It continues to the cold separator (5). Here, it is freed from materials accompanying the natural gas, which are liquefied under the conditions of temperature and pressure obtaining. The already largely-dried natural gas is used as coolant in the heat exchanger secondary, from which it is supplied to the natural gas grid. Liquid in the cold separator is supplied without intermediate heating to the three phase separator (as indicated). To drying medium, water and residual hydrocarbons in a sump (24) of the three-phase separator (11) heat is supplied under temperature control using drying medium in a circuit. Control is such that at operational temperature and pressure, volatile dissolved gases are driven off and liquid hydrocarbon is separated from water-containing drying medium. This is intercepted and led to a condensate tank.
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