Hydrolysis reaction device for dechlorination and decyanation of blast furnace gas

A hydrolysis reaction device for dechlorination and decyanation of blast furnace gas, wherein the hydrolysis reaction device comprises a cylinder body, wherein a top of the cylinder body is provided with an air inlet channel, and a bottom of the cylinder body is provided with an air outlet channel, and functional zones are arranged in the cylinder body;

• the functional zones are sequentially an air inlet zone, a first protective agent zone, a first transition zone, a second protective agent zone, a second transition zone, a hydrolysis zone and an air outlet zone along a gas flow direction, and adjacent functional zones are communicated;
• and feed holes and discharge holes are uniformly arranged on an outer side surface of the cylinder body;
• wherein the first protective agent zone is filled with a dechlorination agent;
• the dechlorination agent is a composite metal oxide dechlorination agent;
• the composite metal oxide dechlorination agent is a calcium oxide-zinc oxide composite dechlorination agent or an aluminum oxide-copper oxide composite dechlorination agent;
• and the dechlorination agent is any one or a combination of two or more of spherical, cylindrical or honeycomb;
• wherein the second protective agent zone is filled with adsorbent;
• the adsorbent is any one or a combination of two of activated carbon and alumina;
• and the adsorbent is any one or a combination of two or more of spherical, cylindrical or honeycomb;
• wherein the hydrolysis zone is filled with a hydrolyzing agent;
• the hydrolyzing agent is any one or a combination of two of alumina and zinc oxide;
• and the hydrolyzing agent is any one or a combination of two or more of spherical, cylindrical or honeycomb;
• and
• wherein a diameter ratio of the first protective agent zone, the second protective agent zone and the hydrolysis zone is (0.65-0.85):1:1, a height ratio of the first protective agent zone, the second protective agent zone and the hydrolysis zone is (0.55-0.75):(0.65-1):1, a volume space velocity of the first protective agent zone is 1200-3600 h−1, a volume space velocity of the second protective agent zone is 870-3000 h−1, and a volume space velocity of the hydrolysis zone is 550-2500 h−1.