Assessment of structural changes at IN-519 cast steel reformer tubes

• Autorzy: Łabanowski J.
• Języki publikacji: EN

Abstrakty

EN

Catalytic tubes are the most important parts in reformer furnaces at ammonia chemical plants. A steam reforming process converts hydrocarbons into mixtures of hydrogen, carbon monoxide and carbon dioxide. This reaction proceeds at a temperature range 800-900 °C and under pressure 3 - 4 MPa. This severe working condition causes a structural damage in the tubes. It is necessary to develop reliable methods for inspection of tube degradation and for realistic prediction of its residual life. The paper presents effects of long-term service at elevated temperatures on microstructural changes of the alloy IN-519 (24%Cr, 24%Ni, Nb).

Słowa kluczowe

EN

reformer tubes; residual lifetime; structural degradation

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2005
• Tom: Vol. 5, nr 1-3
• Strony: 14--20
• Opis fizyczny: Bibliogr. 7 poz., 6 rys., 1 tab.

Twórcy

autor

Łabanowski J.

• Gdańsk University of Technology, Department of Materials Science and Engineerig, Gdańsk, Poland

Bibliografia

• 1. Barcik J., Stopy na rury pirolityczne, Uniwersytet Śląski, Katowice 1995.
• 2. Łabanowski J., Ocena procesów niszczenia rur katalitycznych w eksploatacji reformerów metanu, Politechnika Gdańska. Monografie, Nr 35, Gdańsk 2003.
• 3. Łabanowski J., Nieniszczące metody badań zużycia rur katalitycznych reformerów metanu, Inżynieria i Aparatura Chemiczna, 2000, Nr 4-5, 14-18.
• 4. Roberts R.D., Tait P., Laser profilometry applied to catalyst tubes in steam reformers for ongoing condition monitoring of creep damage, Insight Vol. 42, No. 8, August 2000, 525-527.
• 5. Perez M.C., Integrated approach for life assessment of reformer tubes, PLAN Conference on Plant Life Assessment, Spain, October 2001.
• 6. Silva T.L., Le May I., Damage accumulation mechanisms in reformer furnace, Proceedings of Conference Materials Ageing and Component Life Extension, CIM, Montreal 1995, 1-10.
• 7. Zaghloul M.B., Shinoda T., Tanaka R., Relation between structure and creep rupture strength of centrifugally cast HK 40 steel, Transaction of ISIJ 1977, Vol. 17, 28-36.