Application research on resin adsorption treatment of organic tail gas from purification of wet-process phosphoric acid
The tail gas produced by solvent extraction method for wet-process purification phosphoric acid contains a large amount of organic solvent,which poses a combustion risk when mixed with air.The tail gas has an odor that affects the surrounding environment,and the consumption of solvents affects production costs.The treatment methods of organic tail gas and the current status of organic tail gas treatment in wet-process purification phosphoric acid plant are introduced.Large-diameter resin adsorption technology is used to treat the tail gas of wet-process purification phosphoric acid and recover organic solvents,treatment conditions are optimized.After treatment,the mass concentration of organic matter in tail gas is less than 100 mg/m3,the solvent recovery rate is greater than 99%,which can save production costs by 4.5 million RMB Yuan per year.
purification of wet-process phosphoric acidorganic tail gasresin adsorption
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