Acid-gas-containing Claus sulfur recovery catalyst and preparation method thereof
A technology of catalyst and activated alumina, which is applied in chemical instruments and methods, sulfur preparation/purification, physical/chemical process catalysts, etc., and can solve the problems of high cost, reduced activity, and small operating flexibility
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Embodiment 1
[0020] Embodiment 1 (comparative example)
[0021] Weigh FeSO 4 .7H 2 O13g is dissolved in 10ml soft water, and the pH is adjusted between 2.0-2.2. Dried at 250°C for 20g immersion solution of activated alumina carrier whose specification is ¢4-6mm, soaked for 2 hours, stirred with a glass rod once each hour, then dried at 120°C for 2 hours, and roasted at 320°C for 4 hours, that is Get sample A.
Embodiment 2
[0022] Embodiment 2 (comparative example)
[0023] Weigh FeSO 4 .7H 2 O5g and 7g Fe(NO 3 ) 3 .9H 2 O was dissolved in 100ml of soft water to adjust the pH between 2.0-2.2. Dried at 250°C for 20g immersion solution of activated alumina carrier whose specification is ¢4-6mm, soaked for 2 hours, stirred with a glass rod once each hour, then dried at 120°C for 2 hours, and roasted at 320°C for 4 hours, that is Get sample B.
Embodiment 3
[0025] Weigh FeSO 4 .7H 2 O12.5g is dissolved in 100ml soft water, adjust the pH between 2.0-2.2. Dried at 250°C for 20g immersion solution of activated alumina carrier whose size is ¢4-6mm, soaked for 2 hours, stirred once with a glass rod for each hour, then dried at 120°C for 2 hours, and prepared ammonia with a concentration of 2.5%. Aqueous solution, immerse the dried carrier in the solution for 2 hours, stir once every hour with a glass rod, then dry at 120°C for 2 hours, and bake at 320°C for 4 hours to obtain sample C.
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