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Title: A novel technique to control high temperature materials degradation in fossil plants

Abstract

High temperature corrosion of superheater (SH) and, specially, reheater (RH) is strongly dependent on metal temperature. In this work, a way to continuously monitor the metal temperature of SH or RH, elements developed by the Instituto de Investigaciones Electricas (IIE) is described and the effects of operating parameters on metal temperature are evaluated. Also, the effects the steam-generator design and metal temperature on the corrosion rates have been investigated. In some steam generators, corrosion rates were reduced from 0.7 to 0.2 mm/y by changing the tube material and reducing the metal temperature. Also, the effect of metal temperature on the residual life of a 347H tube in a 158MW steam generator is evaluated. It is concluded that metal temperature is the most important parameter in controlling the high-temperature materials behavior in boiler environments.

Authors:
;  [1];  [2]
  1. Inst. de Investigaciones Electricas, Cuernavaca (Mexico). Dept. Fisico-Quimica Aplicada
  2. Matercor Asesores, Temixco (Mexico)
Publication Date:
OSTI Identifier:
124446
Report Number(s):
CONF-950304-
TRN: IM9548%%36
Resource Type:
Conference
Resource Relation:
Conference: Corrosion `95: National Association of Corrosion Engineers (NACE) international annual conference and corrosion show, Orlando, FL (United States), 26-31 Mar 1995; Other Information: PBD: 1995; Related Information: Is Part Of Corrosion/95 conference papers; PB: 5788 p.
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; 02 PETROLEUM; FOSSIL-FUEL POWER PLANTS; SUPERHEATERS; CORROSION; FUEL OILS; CORROSIVE EFFECTS; COMBUSTION PRODUCTS; TEMPERATURE DEPENDENCE; SERVICE LIFE; THERMOCOUPLES; ASPHALTENES; VANADIUM; SULFUR; SODIUM; PROCESS CONTROL

Citation Formats

Gonzalez-Rodriguez, J.G., Porcayo-Calderon, J., and Martinez-Villafane, A. A novel technique to control high temperature materials degradation in fossil plants. United States: N. p., 1995. Web.
Gonzalez-Rodriguez, J.G., Porcayo-Calderon, J., & Martinez-Villafane, A. A novel technique to control high temperature materials degradation in fossil plants. United States.
Gonzalez-Rodriguez, J.G., Porcayo-Calderon, J., and Martinez-Villafane, A. Wed . "A novel technique to control high temperature materials degradation in fossil plants". United States.
@article{osti_124446,
title = {A novel technique to control high temperature materials degradation in fossil plants},
author = {Gonzalez-Rodriguez, J.G. and Porcayo-Calderon, J. and Martinez-Villafane, A.},
abstractNote = {High temperature corrosion of superheater (SH) and, specially, reheater (RH) is strongly dependent on metal temperature. In this work, a way to continuously monitor the metal temperature of SH or RH, elements developed by the Instituto de Investigaciones Electricas (IIE) is described and the effects of operating parameters on metal temperature are evaluated. Also, the effects the steam-generator design and metal temperature on the corrosion rates have been investigated. In some steam generators, corrosion rates were reduced from 0.7 to 0.2 mm/y by changing the tube material and reducing the metal temperature. Also, the effect of metal temperature on the residual life of a 347H tube in a 158MW steam generator is evaluated. It is concluded that metal temperature is the most important parameter in controlling the high-temperature materials behavior in boiler environments.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Nov 01 00:00:00 EST 1995},
month = {Wed Nov 01 00:00:00 EST 1995}
}

Conference:
Other availability
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