Low-temperature hydrolyst for high concentrated organosulfur and preparation thereof
A hydrolysis catalyst and organic sulfur technology, applied in the field of carbonyl sulfide hydrolysis catalyst and preparation, can solve the problems such as unclear description of catalyst anti-sulfur poisoning performance, sulfation poisoning of hydrolysis catalyst, low equilibrium conversion rate, etc., and achieve smooth export and low temperature. The effect of high conversion rate and high hydrolysis conversion rate
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Embodiment approach 1
[0026] Take by weighing three parts of pseudo-boehmite whose weights are respectively 100g, 94g and 88g, add 7.5g, 15g and 22.5g of potassium carbonate to the three parts of pseudo-boehmite and mix them evenly, and then add Add 10g of titanium oxide, and finally add a pore-forming agent composed of 4g of methylcellulose, 6g of ammonium bicarbonate, and 3g of polyvinyl alcohol. Mix all the raw materials, add deionized water, and knead often Warm extruded strips, dried at 100°C for 4 hours, and calcined at 550°C for 4 hours to obtain K 2 Three carbonyl sulfide hydrolysis catalysts with O contents of 5%, 10% and 15%, respectively. Catalyst carbonyl sulfide hydrolysis reaction at a temperature of 40°C and a space velocity of 1000h -1 , oxygen concentration 12%, imported COS concentration 2500mgS / m 3 Under the conditions, the results of hydrolysis conversion rate and hydrogen sulfide adsorption rate are listed in Table 2.
[0027]Table 2 Catalyst hydrolysis conversion rate and h...
Embodiment approach 2
[0030] Weigh 105g of pseudo-boehmite, 5g of titanium oxide, 15g of potassium carbonate, 7g of pore-forming agent carboxymethyl cellulose and ammonium bicarbonate, mix well, add 1% dilute nitric acid, knead at room temperature and extrude. Dry at 120°C for 3 hours, and bake at 550°C for 4 hours to obtain the finished catalyst. The catalyst activity test, at the import COS concentration 2500mgS / m 3 , Reaction temperature 60℃, space velocity 2000h -1 , Under the condition of 12% oxygen content, the conversion rate of COS can reach more than 95%, and the amount of hydrogen sulfide exported is basically the same as the amount of carbonyl sulfide hydrolyzed.
Embodiment approach 3
[0032] Weigh 84g of pseudo-boehmite, 15g of titanium oxide, 15g of potassium carbonate, and the three components of pore-forming agent methylcellulose, ammonium nitrate, and polyvinyl alcohol have a weight of 4g, 5g, and 6g, mix well, add deionized water, After kneading at room temperature, extrude, dry at 150°C for 2 hours, and roast at 600°C for 3 hours to obtain the finished catalyst. The catalyst activity test, at the import COS concentration 2500mgS / m 3 , Reaction temperature 60℃, space velocity 2000h -1 , Under the condition of 12% oxygen content, the conversion rate of COS can reach more than 95%, and the amount of hydrogen sulfide exported is basically the same as the amount of carbonyl sulfide hydrolyzed.
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