| 摘要 |
The invention relates to a method for the treatment of a flue gas stream for reducing the SOX content in said flue gas by using absorbents based on suspensions that contain calcium compounds, wherein the flue gas initially streams through a first section and then through a second section of a flue gas scrubber, wherein the flue gas in the first section and in the following second section is sprayed with absorbent, wherein the pH of the absorbent sprayed in the first section is lower than the pH of the absorbent sprayed in the second section, and wherein the absorbent sprayed in the first and second section is collected together. Furthermore, the invention relates to a device for the treatment of a flue gas stream using absorbents based on suspensions that contain calcium compounds, wherein the device has a container, first and second spraying devices, located inside said container, for spraying said absorbents, wherein the second spraying devices are located above the first spraying devices, as well as an absorber sump and a second absorbent receptacle downstream of said absorber sump for receiving the absorbent, wherein, above the absorber sump and below the first spraying devices, a gas inlet for the flue gas stream is provided, wherein two absorbent loops are provided, wherein, in the first absorbent loop a first partial stream of the absorbent is conducted directly from the absorber sump to the first spraying device in order to be sprayed, and a second partial stream of the absorbent is conducted from the absorber sump to the second absorbent receptacle downstream of said absorber sump and from there to the second spraying devices, wherein the absorbent streams sprayed in the first and second spraying devices are conducted back into the absorber sump. |
