Industrial application of solid base adsorption agent to dead-. dification refinement of ethyl cyanocaetate

Key words:  ethyl cyanocaetate  refinement  solid base  adsorption  industrial application

Abstract:

MgO/y-Al203 adsorption agents were prepared by wet-mixing-kneading method. The performances of deacidification efficiency，adsorption capacity，adsorption heat and anti-loss of metal were measured in deacidication refinement of ethyl cyanocaetate. The deacidification efficiency of Mg0/y-AI203 adsorption agent was evaluated using a fixed bed micro-reactor. Furthermore ，the adsorption agent was prepared in commercial scale and applied in industry. The results show that the deacidiflca-tion capacity of Mg0/y-Al203 prepared in laboratory could achieve 240:1 ( volume ratio) when the acid value of the stock is 58 x 10 '6 and that of effluent is not more than 10 xlO"6. The treating capacity of commercial Mg0/y-Al203 could arrive 173:1 (mass ratio) when the acid value of the stock is 60 x 10'6 -80 x 10'6 and that of effluent is not more than 20 x 10"6. The average heat effect is 61. 91 J g"1 for sample prepared in laboratory. Moreover, the performance of anti-loss of metal of this solid base adsorption agent is satisfactory，and the mass content of Mg in the effluent is less than 2.0 x 10 6,