Method for green and efficient absorption of hydrogen chloride gas by using polyethylene glycol type eutectic solvent

The invention relates to a method for green and efficient absorption of hydrogen chloride gas by using a polyethylene glycol type eutectic solvent, a eutectic solvent is a two-component or three-component eutectic mixture composed of a hydrogen bond acceptor and a hydrogen bond donor according to a certain stoichiometric ratio, the eutectic solvent in the method is composed of two components, the component 1 is polyethylene glycol, the component 2 is malonic acid, glutaric acid, choline chloride or benzamide, and the molar ratio of the component 1 to the component 2 is 2: 1-4: 1. The hydrogen chloride gas is formed by volatilizing 6-12 mol/L hydrochloric acid, the temperature of the eutectic solvent for absorbing the hydrogen chloride gas is 25-40 DEG C, and the absorption time is 96-144 hours. The invention provides the method for green and efficient absorption of hydrogen chloride gas by using the polyethylene glycol type eutectic solvent, and the method is simple, convenient, low in cost, low in energy con