Description

Packaging & Delivery Packaging Detail: Catalyst always packing by steel drums or fiber drums linner with plastic film bag, storage in the air dry place, avoid to absorb moisture from the air then reduce the crushing strength. Delivery Detail one month after order date Specifications ***** catalytis activity 2.high mechanical strength ***** thermal and coking resistance ********1, ***0 1. AD***6 Ammonia decompasition catalyst is provided with the properties of great catalytis activity, high mechanical strength, excellent thermal and coking resistance. It is used in the ammonia decomposing furnace to to decompose the NH3 prevent the equipment from corrosion. 2. The chemical reaction as follows: NH3→0.5N2*1.5H2 HCN*2H2O→0.5N2*2H2+CO2 3. Technical indexes Item type AD***6 AD***6A AD***6B Color Grey and Black Shape Cylinder Rasching ring Honeycomb Size, mm Φ*8×*0 Φ*8×*0×5 Φ*8×*0 Ni content, % ≥6 ≥6 ≥6 Bulk density, g/ml 1.4~1.6 1.3~1.5 1.2~1.5 Surface area, m2/g 1~3 2~4 2~5 Crushing strength ≥***0 ≥***0 ≥***0 Thermal resistance ≥***0 ≥***0 ≥***0 4. Normal operating conditions: Temperature (°C) Pressure Space velocity (h*1) NH3 decomposing rate (%) ***0±*0 Normal pressures ***0~***0 ≥*4 5. Installation start-up and stop 1) start-up: At first, feeding dry air into furnace directly, heating it to**0, maintain *2 hours for removing water from the catalyst. Then open air-valve and gas-valve of the burner, turn on portfire, using mixture of hot air and gas to combustion heating, reducing the amount of air until the hot air/gas stoichiometric ratio to 4.2~4.5 when furnace temperature reach to **0, then gradually increased the catalyst layer temperature to ***0~***0, following to feed the ammonia to operate when the temperature stabilized. 2) Stop: Temporarily suspend: Can turn off thr inlet and outlet valve and cut off the gas supply to keep the temperature and pressure. Long time stop: Firstly stop to feeding the ammonia gas, but to feed the air for compeletely blowing the ammonia gas and let the natural cooling then close the valve. Stoped then to restart-up: Proceeding in accordance with the normal prodedures.