Device for washing biogas from e.g. agricultural wastes, so as to be injected into natural gas distribution network, has cooler comprising water slackened at pressure, where device washes gas at pressure by counter current water washing

摘要

The device has a material transfer column (6) i.e. decarbonator-dehydrator, comprising pressurized water that is slackened at a pressure close to atmosphere in another material transfer column, where the device washes gas at a pressure close to atmospheric pressure in an vertical cooling exchanger e.g. vertical cooler (1) such as desulfurizer, by spraying water from top to bottom against current of ascending gas and at another pressure of 5 atmospheres in the former transfer column by counter current water washing of ascending gas with a cold water at 5 degree Celsius approximately.