Products tagged with 'coking'

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02386 A NEW CARBURIZATION RESISTANT ALLOY FOR ETHYLENE PYROLYSIS FURNACE TUBES

Product Number: 51300-02386-SG

ISBN: 02386 2002 CP

Author: Y.Nishiyama, H.Semba, K.Ogawa, Y.Yamadera, Y.Sawaragi, and S.Kinomura

Publication Date: 2002

$20.00

A new wrought alloy has been developed for use as furnace tubes in ethylene pyrolysis plants. This alloy has an excellent carburization resistance due to uniform formation of protective Al2O3 oxide scale on the metal surface. Laboratory corrosion tests have been carried out to evaluate carburization resistance of the developed alloy.

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51317--9785-Oxidation Kinetics of Cast Alumina-Forming Austenitic Alloys in Steam

Product Number: 51317--9785-SG

ISBN: 9785 2017 CP

Author: Benjamin Church

Publication Date: 2017

$20.00

Alloy tubes used in petrochemical processing reactor systems are often subjected to oxidizing conditions in high temperature steam such as during de-coking cycles. A new class of heat resistant austenitic cast alloys are being developed that are designed to form protective oxides of alumina.

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Methods to Assess Carburization Damage and Remaining Life in Fired Heater Tubes

Product Number: 51323-18771-SG

Author: Jeff Goldstein

Publication Date: 2023

$20.00

Fired heaters in coking service are susceptible to carburization damage, which needs to be predicted and managed to prevent unexpected downtime and expedited replacement costs. Carburization damage occurs when carbonaceous material, i.e., coke, is deposited on a steel surface and exposed to high metal temperatures; such are the internal conditions present in fired heater tubes in coking services. At these high temperatures, the carbon diffuses into the steel microstructure and increases the hardness while reducing ductility. At an advanced state, this reduction in ductility may lead to tube failure if a mechanical or thermal shock is applied. The diffusion of carbon can also cause the formation of deleterious chromium carbides in the steel microstructure, reducing the high temperature corrosion resistance in those areas.

Products tagged with 'coking'

02386 A NEW CARBURIZATION RESISTANT ALLOY FOR ETHYLENE PYROLYSIS FURNACE TUBES

51317--9785-Oxidation Kinetics of Cast Alumina-Forming Austenitic Alloys in Steam

Methods to Assess Carburization Damage and Remaining Life in Fired Heater Tubes

Association for Materials Protection and Performance