Determination of Reactor Operational Mode for Concentrated Fungicide Production

An aqueous solution of phosphorous acid (H3PO3) and potassium hydroxide (KOH) is an example of a phosphonic acid neutralization reaction where potassium salts are formed. This study aimed to design the reactor and the process, which is a problem encountered in the industry, arising from the need to develop a safe and efficient production process. It was found that the production process carried out under exothermic conditions should be in a temperature-controlled reactor at optimum acid/base initial concentration ratios and feed flow rates as 1/1.5, 22800 mL/min, respectively. Due to the thermal safety and risk accidents at the batch reactor, a tubular flow reactor (TFR) has been designed to increase the controllability and the yield of the products produced in the batch reactor having some advantages as to feeding, sampling, and measuring from different points at different times.