Method of producing methane-containing gas from synthesis gas and installation for its implementation

摘要

The invention relates to a method for producing methane-containing gas from synthesis gas, in which synthesis gas containing carbon monoxide and hydrogen is supplied for methanization to a reactor system containing catalyst material exiting the reactor system (1) the process gas stream is separated into a product gas stream and the recycle gas stream, the recycle gas stream to compensate for the pressure drop is transported through the ejector (5) and together with the synthesis gas is sent to the reactor system (1) for cooling. According to the invention, the product gas stream is compressed to a pressure that is greater than the pressure of the synthesis gas entering the reactor system (1). As a moving medium, either compressed product gas or useful gas from a pipeline network (9) for useful gas is supplied to the ejector as a moving medium. The object of the invention is also a methane production unit for implementing the specified method.