Patent ID: 8535613

Claim:
An apparatus for separating acidic gases of CO 2 and H 2 S from syngas containing the acidic gases, the apparatus comprising: shift reaction means for converting CO in the syngas into CO 2 ; physical absorption means for removing, by using a solvent for physical absorption, H 2 S contained in the syngas from the shift reaction means; chemical absorption means for removing, by using a solvent for chemical absorption, CO 2 from the syngas from which H 2 S has been removed by the physical absorption means; washing means for washing the syngas after the shift reaction, the washing means being provided upstream of the physical absorption means; solvent removal means for removing the solvent of physical absorption from the syngas from which H 2 S has been removed by the physical absorption means, the solvent removal means being provided upstream of the chemical absorption means; and heat exchange means for heating the syngas after the solvent removal means and before introduction into the chemical absorption means by use of the crude syngas heat before the introduction into the physical absorption means after the shift reaction means.