MANUFACTURING METHOD FOR PERACETIC ACID SOLUTION USING COLUMN-TYPE REACTOR AND COIL-TUBE-TYPE AGING REACTOR

摘要

A method for continuous preparation of a peracetic acid solution is provided. The preparation method includes a preliminary stage, a mixing stage, a main reaction stage, a first aging stage, a dilution stage, and a second aging stage. In the main reaction stage, a reaction mixture solution of hydrogen peroxide and acetic acid is continuously injected to a column type reactor filled with a cation-exchange resin to produce peracetic acid. In the first and second aging stages, the reaction product is passed through a coil tube type aging reactor until the peracetic acid production reaches an equilibrium state to stabilize the peracetic acid solution. The preparation method is capable of continuously preparing peracetic acid solutions appropriate for various uses such as descaling, sterilization, disinfection, etc. by changing the mixing proportion of acetic acid and hydrogen peroxide, without interrupting the production of peracetic acid. The method is capable of reducing loss of peracetic acid solution and preventing environmental pollution. Further, since the prepared peracetic acid solution does not contain an inorganic acid, which is commonly used as catalyst for the production of peracetic acid, it is less irritant and has superior anti-corrosion property.