The catalytic oxidation catalyst for acry-lonitrile was prepared by coating method,and the catalyst was characterized by X-ray diffractometer,physical adsorption instrument,scanning electron microscope,etc.The effects of acrylonitrile concen-tration,volume space velocity,and uploading amount on the performance of the catalysts were in-vestigated,and pilot test was carried out.The results showed that the pore structure of the precursor was slit pore,and the pore size distribution was concen-trated at 1-10 nm,with the most available pore size of about 3.13 nm and the specific surface area of 119.75 m2/g.The mass fractions of elemental Al,Pd,Pt,and Ce in the molded catalyst were 25.95％,2.03％,1.20％,and 27.39％,respectively.Under the conditions of total inlet gas volume of 500 m3/h,inlet gas preheating temperature of 400 ℃,and maximum concentration of inlet acrylonitrile of 3 800 mg/m3,the concentration of outlet acryloni-trile was less than the lower limit of detection(0.25 mg/m3),which was in compliance with the national standard requirement of acrylonitrile emis-sion limit of 0.5 mg/m3.
关键词
丙烯腈/催化氧化/催化剂/挥发性有机物/体积空速
Key words
acrylonitrile/catalytic oxidation/cat-alyst/volatile organic compound/volume space ve-locity
维普
万方数据