TITLE:KC-403claus exhaust exhaust hydrogenating catalyst
Classic:Sulfur tolerant shift catalyst and protective agent
TITLE:KC-403claus exhaust exhaust hydrogenating catalyst
Classic:Sulfur tolerant shift catalyst and protective agent
KC-403 catalyst is a special catalyst for hydrogenating Claus exhaust with its carrier of y-Al2O3 and active components of cobalt molybdenum.This catalyst has loads its own characteristics,such as low bulk density, large pore volume specific surface area,good dispersion of the active phase,high activity of hydrogenation and organic sulfur hydrolysis,excellent activity stability,etc.It has achieved the worldwide top level by its overall performance and technical indicators.
| Technical Characteristics |
| √ High stability of mechanical strength |
| √ High activity of hydrogenation and organic sulfur hydrolysis |
| √ Excellent selectivity and activity stability |
| √ Strong adaptability in the high GHSV and great operation flexibility |
| √Long working life |
| Physical and Chemical Properties | |
| Colour and shape | blue grey five-leaf clovers or sphere |
| Dimensions(mm) | Φ3×L(5-20) |
| Coo%(m/m) | ≥2.5 |
| MoO3%(m/m) | ≥9.0 |
| Specific Surface Area(m2/g) | ≥200 |
| Bulk Density (kg/L) | 0.65-0.75 |
| Crushing Strength(N/cm) | ≥130(average) |
| Pore Volume(mL/g) | ≥0.35 |
| Introduction |
As active components precursor,cobalt and molybdenum are exist in the form of oxide in the catalyst. Sulfurization is necessary to convert oxides to sulfides before using.At the inlet,the temperature increases at a rate of 20-30C/h to 120C and maintain this constant temperature for around 2 hours.After the beds achieving the 200C,keep this temperature constant for another 2 hours.The operating conditions of Claus unit need to be adjusted in order to make(H2S+COS)/SO2 ratio in the sulfur exhaust to be 4-6 when the bed temperature has approached 200C.At the same time,increasing the H2 content in the fuel gas to 3-5%at the entrance of the reactor until sulfurization is done.Also,the sulfurizing temperature needs to be controlled between 200C and 260C. After catalyst sulfurization,the temperature continues to increase to 300C at a rate of 20C/h.Then (H2S+COS)/SO2 ratio in the Claus unit is adjusted to 2:1 and the inlet temperature is controlled at 300C+5C.If the hydrogenation performance is still not good enough as time goes on,temperature can be appropriately increased to ensure there is no SO2 and COS in the process gas from the reactor outlet. |
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