Pure gas pre-heating device and method for pre-heating pure gas

摘要

The clean gas pre-heating device comprises a first gas heat exchanger for heating a clean gas (17), an arrangement (2) for processing a raw gas (15) into the clean gas or combustion gas (18). The gas heat exchanger heats the clean gas using the raw gas flowing through the primary side of the exchanger. The gas exchanger is arranged in downstream to a venturi scrubber (3) and in upstream to a high-temperature shift stage (5) and a low-temperature shift stage (6) of a water-gas shift reactor, along the flow direction of the raw gas. The device further comprises a second heat exchanger. The clean gas pre-heating device comprises a first gas heat exchanger for heating a clean gas (17), an arrangement (2) for processing a raw gas (15) into the clean gas or combustion gas (18). The gas heat exchanger heats the clean gas using the raw gas flowing through the primary side of the exchanger. The gas exchanger is arranged in downstream to a venturi scrubber (3) and in upstream to a high-temperature shift stage (5) and a low-temperature shift stage (6) of a water-gas shift reactor, along the flow direction of the raw gas. The device further comprises a second heat exchanger located in upstream of a secondary side of the first gas heat exchanger along the flow direction of the clean gas. A water supply is passed through the second heat exchanger. An independent claim is included for a method for pre-heating a clean gas in gas and steam turbine systems with integrated gasification and carbon-dioxide separation.