Recycling method for waste CO sulfur-tolerant shift catalysts
A waste catalyst, sulfur-resistant shift technology, used in chemical instruments and methods, physical/chemical process catalysts, inorganic chemistry, etc., can solve the problems of narrow active temperature range, very sensitive poisons, insufficient purity, etc., and achieve no secondary pollution. , the effect of saving molybdenum resources and improving sulfur resistance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0018] Example 1
[0019] A waste CO sulfur-tolerant shift catalyst, by X-ray fluorescence analysis, its composition is mass fraction (%): Co (calculated as CoO): 3.8%, Mo (calculated as MoO) 3 Total): 11.5%, K 2 O: 1.5%, S (in SO 2 Total): 14.1%, Al 2 O 3 : 69.1%. Crush the spent catalyst to 100 mesh, take 18kg of crushed spent catalyst, and 200kg Fe(OH) 3 (In Fe 2 O 3 Total mass fraction≥70%), 18kgCr(OH) 3 (In Cr 2 O 3 (Calculated mass fraction ≥ 61%)) milled together for 1 to 2 hours and then passed through an 8-mesh screen to make particles, calcined at a low temperature of 250°C to 300°C for 6 to 8 hours, cooled and then mixed with graphite to form a tablet to obtain a CO high temperature shift catalyst . Detected according to the national chemical industry standard HG / T 3546-2011, activity (calculated as carbon monoxide conversion rate): 61%; average particle radial crush resistance: 365N / cm; particle fraction below 160N / cm: 5% ; Abrasion rate: 3.2%; mass fraction of loss ...
Example Embodiment
[0020] Example 2
[0021] A waste CO sulfur tolerant shift catalyst, after X-ray fluorescence analysis, its composition is mass fraction (%): Co (calculated as CoO): 2.6%, Mo (calculated as MoO) 3 Total): 9.8%, K 2 O: 2.0%, S (in SO 2 Total): 11.7%, Al 2 O 3 : 73.9%. Crush the spent catalyst to 120 mesh, take 20kg of crushed spent catalyst, and 200kg Fe(OH) 3 (In Fe 2 O 3 Total mass fraction≥70%), 18kgCr(OH) 3 (In Cr 2 O 3 (Calculated mass fraction ≥ 61%)) milled together for 1 to 2 hours and then passed through an 8-mesh screen to make particles, calcined at a low temperature of 250°C to 300°C for 6 to 8 hours, cooled and then mixed with graphite to form a tablet to obtain a CO high temperature shift catalyst . Detected according to the national chemical industry standard HG / T 3546-2011, activity (calculated as carbon monoxide conversion rate): 62%; average particle radial crush resistance: 352N / cm; particle fraction below 160N / cm: 0% ; Abrasion rate: 3.0%; mass fraction of los...
Example Embodiment
[0022] Example 3
[0023] A waste CO sulfur tolerant shift catalyst, after X-ray fluorescence analysis, its composition is mass fraction (%): Co (calculated as CoO): 1.5%, Mo (calculated as MoO) 3 Total): 8.6%, K 2 O: 4.8%, S (in SO 2 Total): 9.2%, Al 2 O 3 : 75.9%. Crush the spent catalyst to 120 mesh, take 22kg of crushed spent catalyst, and 200kg Fe(OH) 3 (In Fe 2 O 3 Total mass fraction≥70%), 18kgCr(OH) 3 (In Cr 2 O 3 (Calculated mass fraction ≥ 61%)) milled together for 1 to 2 hours and then passed through an 8-mesh screen to make particles, calcined at a low temperature of 250°C to 300°C for 6 to 8 hours, cooled and then mixed with graphite to form a tablet to obtain a CO high temperature shift catalyst . Detected according to the national chemical industry standard HG / T 3546-2011, activity (calculated as carbon monoxide conversion rate): 60%; average particle radial crush resistance: 382N / cm; particle fraction below 160N / cm: 0% ; Abrasion rate: 2.8%; mass fraction of loss...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap