The invention discloses an acid solution and
hydrogen recycling method and an equipment thereof. The acid solution and
hydrogen recycling method comprises following steps: S1, a condenser is used for cooling gas which contains
hydrogen,
sulfuric acid,
phosphoric acid, and
water vapor, and is discharged from a reaction kettle so as to realize
backflow of
water vapor and acid mist in the gas into the reaction kettle after conversion from gas state into
liquid state via condensation; S2, the gas which contains hydrogen and is discharged from the condenser is subjected to acid mist removing purifying using a neutralizing
tower, a alkali solution circulate spraying water pump is used for spraying and adding alkali solution, and
neutralization of the added alkali solution with the acid mist in the gas containing hydrogen is realized; S3, a deentrainment
tower is used for demisting of the gas containing hydrogen; S4, head water is used for isolating the
atmosphere, and the pressure in a
system in the front of the deentrainment
tower is controlled in a certain range; and S5, a safe water seal is adopted, when the pressure in the
system in the front of the deentrainment tower exceeds the certain range, the gas containing hydrogen is introduced into the safe water seal through a
constant pressure water seal, and under normal working states, the gas containing hydrogen is delivered into a hydrogen utilization
system via a gas
discharge pipe on the safe water seal.