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In our Butadiene plant we are using ACN+Ethanol+Water(tertiary) solvent. IN WASTE GAS RECOVERY EXCHANGER we observed there is a formation of ammonia salt.Tube side is HC(EA+VA+BD+small trces of ACN). Due to corrosion regularly the exchanger is leaking. Shell side is Brine (water+MEG). The exchanger is operated at around 10-15 degree celsius. Even bottom pump casing is damaged because of that material. Please suggest a solution.
 
Answers
21/10/2011 A: Berthold Otzisk, Kurita Europe GmbH, Berthold.Otzisk@kurita-water.com
Kurita´s ACF Technology offers the perfect solution for this request. This technology is based on chemical removal of ammonium salts.
The ACF products, dosed in low ppm range, will form directly a liquid ACF salt, which has a neutral pH. ACF salts are extremely water-soluble products. They have a very low corrosivity compared to very corrosive ammonium salts. Ammonia will be removed from the salt.