Method for comprehensively utilizing yellow phosphorus tail gas

The invention relates to a method for comprehensively utilizing yellow phosphorus tail gas. The method is characterized by comprising the steps that after the yellow phosphorus tail gas is washed by water and alkali, H2S, COS, CS2, PH3, AsH3, HF, HCN, HCl, carbonyl metal and O2 in the yellow phosphorus tail gas can be removed through deep purification including the steps of removal of sulfur, phosphorus, arsenic, fluorine, chlorine, HCN, carbonyl metal and oxygen; then one part of yellow phosphorus tail gas which is deeply purified is used for separating CO through pressure swing adsorption, and the other part of yellow phosphorus tail gas is used for preparing high-concentration H2 through transformation; the volume ratio of the yellow phosphorus tail gas used for separating out the CO through pressure swing adsorption to the yellow phosphorus tail gas used for synthesizing the H2 through transformation is 1:1-1:3. The prepared pure CO and the prepared pure H2 are used as fed gases and can be used for producing ethylene glycol (EG). Based on the characteristic that the components of the yellow phosphorus tail gas are complex, the method for comprehensively utilizing the yellow phosphorus tail gas is provided. The yellow phosphorus tail gas can be utilized reasonably and effectively, environmental pollution is reduced and cyclic and economical utilization of resources is realized.