Spray Absorption Tower

Spray Absorption Tower,also known as acid mist absorption tower,consists of four parts:tower body,tower plate,reboiler,and condenser.The washing tower is a device for coarse separation,so the number of trays is generally small,usually not exceeding ten levels.The washing tower is suitable for the separation of mixed gases containing a small amount of dust.The components will not react,and the products are easy to liquefy.Impurities such as dust are not easy to liquefy or solidify.

When the mixed gas enters the washing tower from the middle of the tower,due to the presence of product component liquid between the trays,the product component gas liquefies and evaporates,while impurities cannot be liquefied or solidified.When passing through the trays with liquid present,they will be fixed by the product component liquid,producing a washing effect.The washing tower is designed and manufactured based on this principle.

The principle of a washing tower is mainly based on the composition of the odor,using strong acids(sulfuric acid),strong bases(sodium hydroxide),and strong oxidants(sodium hypochlorite)as washing spray solutions to come into contact with odor molecules in the gas,transferring the odor components from the gas phase to the liquid phase,and using chemical agents to neutralize and oxidize the odor components to remove the odor substances.

The commonly used washing equipment is a packed tower,where the chemical absorption liquid is sprayed downwards from the top of the tower,and the exhaust gas flows upwards.The odor is fully contacted and reacted with the absorption liquid to be removed.The ratio of absorption liquid to exhaust gas flow rate(liquid/gas ratio)is generally 1-3 L/m3,the packing height is generally 2-5 meters,and the gas flow rate in the empty tower is generally 0.5-1 meters/second.A well operated filling tower can achieve a deodorization effect of over 90%.