By means of a device for compressing a gas
stream, comprising: at least one
feed line (2) feeding a gas
stream comprising at least one gaseous compound to a compressor unit (4), and at least one
discharge line (3) for discharging the compressed gas
stream from the compressor unit; a compressor unit (4) comprising at least one first compressor stage (1) and one final compressor stage (F) wherein the feed
pipe (2) is in fluid communication with the gas inlet of the first compressor stage (1) and the gas outlet of the first compressor stage (1) is in fluid communication with the gas inlet of the last cooling device (WA00F), and the gas outlet of the last cooling device (WA00F) is in fluid communication with the gas inlet of the final compressor stage (F) and the
discharge line (3) is in fluid communication with the gas outlet of the final compressor stage (F); at least one first bypass (6a) connecting the exhaust line (3) to a fluid connection between the last cooling device (WA00F) and an immediately preceding compressor stage, in which the exhaust line (3) is connected by means of a first flow
regulator (5a) located in the first bypass (6a) and comprising at least one valve (10), the amount of gas carried in the bypass gas flow can be controlled and thus the through-flow of the gas flow through the final compressor stage (F) can be adjusted; at least one second bypass (6b) provided with a second flow
regulator (5b), in which the bypass connects the fluid connection between the last cooling device (WA00F) and the final compressor stage (F) to the
feed line (2), and by means of a corresponding method which can be carried out using this device, the cooling device (WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F,
compressor stall of the compressor unit (4) can be better coordinated with individual compressor stages, and condensation of the returned compressed gas stream can be avoided. The final compressed gas stream produced by the method provides a compressed hot gas that can be used to integrate heat into the process steps after compression.