NOVELTY - Purification and recycling mercury in smoke gas comprises soaking activated carbon fiber into phosphoric acid solution, zinc chloride solution or ammonium salt solution (15-45%) for 12-24 hours, drying, mixing 0.001-1 mg/L ion solution containing silver and activated carbon fiber, filtering solution after oscillating in constant-temperature water bath for 4-24 hours, repeatedly washing fiber with deionized water, filtering solution, repeatedly washing fiber with distilled water, vacuum heating, and refluxing to storage tank for further recycling.    USE - Method of purifying and recycling mercury in smoke gas (claimed).    ADVANTAGE - The method has fast rate, high efficiency and low carbon loss mercury removing effect. The mercury steam can be recycled through condensate recycling way.    DETAILED DESCRIPTION - Purification and recycling mercury in smoke gas comprises:    (A) soaking activated carbon fiber into phosphoric acid solution, zinc chloride solution or ammonium salt solution (15-45%) for 12-24 hours, drying, placing dried activated carbon fiber into a vertical carbonization furnace, heating to activate under nitrogen protection or directly charging water vapor to activate, warming temperature from room temperature to 650-1000 degrees C, maintaining the temperature, activating activated carbon fiber for 30-240 minutes, stopping heating and cooling naturally, and vacuum drying at 80-110 degrees C to constant weight;    (B) placing dried activated carbon fiber into low-temperature plasma body reactor, using nitrogen as protection gas, using 5-100 kV power supply equipment to generate low-temperature plasma body at 20-40 degrees C to process activated carbon fiber, stopping electrifying after 5-120 minutes, and vacuum drying at 80-110 degrees C to constant weight;    (C) taking 0.001-1 mg/L of prepared ion solution containing silver, adding activated carbon fiber, filtering solution after oscillating in constant-temperature water bath for 4-24 hours, repeatedly washing fiber with deionized water, filtering solution, repeatedly washing fiber with distilled water, and vacuum heating at 50-105 degrees C;    (D) using low-temperature plasma body to regenerate after preparing activated carbon fiber carried with silver adsorbs saturated mercury, using the nitrogen as the protection gas during whole desorbing procedure, controlling condition of low-temperature plasma body reactor, applying voltage for 5-100 V, and alternating current with frequency at 50-1 kHz and regeneration time at 1-60 minutes;and    (E) using low-temperature plasma body desorbing technology to regenerate activated carbon fiber carried with silver, and refluxing to storage tank for further recycling after volatilization of mercury steam into condenser to condense.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the purification and recycling mercury in smoke gas. (Drawing includes non-English language text)