Catalytic distillation tower member and its manufacture
A catalytic distillation column and component technology, which is applied to the structure of the internal components of the catalytic distillation column and the field of preparation thereof, can solve the problem of unfavorable gas-liquid mass transfer, ineffective catalytic distillation performance, and difficulty in coating catalyst active components and other problems, to achieve the effect of high separation performance, improved conversion and selectivity, large porosity and specific surface area
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[0033] Example 1
[0034] Take the Al with a mass fraction of 70% 2 O 3 Mix with 20% distilled water and add 10% starch. After mixing and ball milling for 6 hours, a uniformly dispersed slurry is obtained, and then the pH value is adjusted to 6 with hydrochloric acid; the prepared slurry blank is extruded with a designed mold After forming, a corrugated board blank with a wave crest height of 6mm, a wave distance of 12mm, a corrugation inclination angle of 45°, and a wall thickness of 0.8mm is obtained, and a φ4mm hole is opened in the corrugated board wall. After shaping, the formed blanks are dried at room temperature, and then the dried blanks are assembled. When assembling, the corrugations of two adjacent pieces of packing cross 90°, and the wave crests of two adjacent pieces of packing are connected with water glass. After the pieces are assembled, a φ100×100mm structured packing disc is formed; finally, the structured packing assembled into the disc is put into a kiln and f...
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[0035] Example 2
[0036] The porous ceramic structured filler prepared in Example 1 was used as a matrix, and the surface was modified. The φ100×100mm porous ceramic structured packing disc was immersed in the aluminum hydroxide suspension, taken out after 20 hours, and then calcined at 1100°C for 12 hours. During the firing process, the coated aluminum hydroxide undergoes a phase change, and finally α-type alumina is obtained. Alpha-Al 2 O 3 The surface area of the surface-modified substrate is 550m 2 / m 3 .
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[0037] Example 3
[0038] The modified layer-forming substrate obtained in Example 2 was coated with metallic palladium to prepare a hydrogenation catalyst. Prepare palladium chloride or palladium nitrate aqueous solution according to the palladium content 0.5% (weight), adjust the pH value to 5.0-6.5, spray on the modified substrate preheated to 40-60°C with a suitable sprayer, and then dry at 120°C. The palladium-loaded filler is calcined at 350-500°C, preferably not more than 500°C. The general calcination time is 10 hours. Then, the catalyst is reduced with hydrogen-containing gas at an appropriate pressure and 60-120°C for 12 hours to prepare a filler containing catalyst active components.
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