| abstract |
The invention discloses a method for separating acetylene from cracked gas by solvent absorption and adsorption separation coupling. The method comprises the steps of absorption of heavy components, absorption of acetylene, desorption of light components, desorption of acetylene, desorption of high alkyne, adsorption of alkyne, sulfur and/or phosphorus-containing harmful gas and the like. Heavy components such as tar in cracked gas, light components such as alkene, alkane, CO2 and CO, high alkyne such as methyl acetylene and diacetylene and harmful gas such as hydrogen sulfide and hydrogen phosphide are separated from acetylene, and the high-purity acetylene products can be obtained on the premise of guaranteeing a high yield. |