Patent ID: 9568014
Date: 2017-02-14
CPC Classifications: B01D,F04D,F16J,Y02E

Claim:
1. A gas system, comprising: a first compressor stage for compressing a process gas, wherein the first compressor stage comprises an intake side and a pressure side and is surrounded by a compressor housing, a transmission shaft in a transmission housing, wherein the transmission shaft passes through the transmission housing and through the compressor housing, a shaft sealing housing filled with a seal gas, wherein the shaft sealing housing encloses the transmission shaft, wherein the shaft sealing housing includes at least one second line, wherein the seal gas is outside the first compressor stage in order to prevent process gas from issuing from leaks in the first compressor stage, wherein the at least one second line returns a gas mixture issuing from the gas system, this mixture comprising at least process gas and seal gas, wherein the at least one second line is configured for returning the issuing gas mixture to the intake side of the first compressor stage, to a location in the gas system upstream of the first compressor stage, or to the intake side of the first compressor stage and to the location in the gas system upstream of the first compressor stage, wherein at least one first line is provided for returning process gas issuing from leaks in the gas system to the intake side of the first compressor stage, said leaks being located downstream of the first compressor stage.