98/00497 High temperature corrosion of boiler tube materials in simulated combustion waste gas

1998 ◽  
Vol 39 (1) ◽  
pp. 43
Keyword(s):  
High Temperature ◽  
High Temperature Corrosion ◽  
Boiler Tube ◽  
Waste Gas

High Temperature Corrosion Properties of Heating Surface in Waste-to-Energy Boiler Tube

2017 ◽  
Vol 34 (1) ◽  
pp. 27-33
Author(s):  
Jung Won Bang ◽  
Younghee Kim ◽  
Soo-Ryong Kim ◽  
Dong-Geun Shin ◽  
Kye-Hong Cho ◽  
...  
Keyword(s):  
High Temperature ◽  
Heating Surface ◽  
High Temperature Corrosion ◽  
Waste To Energy ◽  
Boiler Tube ◽  
Corrosion Properties

Solvothermal Modified Layers against High Temperature Corrosion

2015 ◽  
Vol 825-826 ◽  
pp. 621-627 ◽  
Author(s):  
Silke Wöllmer ◽  
Andrea Förg ◽  
Sebastian Schuster ◽  
Patrick J. Masset
Keyword(s):  
High Temperature ◽  
Driving Force ◽  
State Of The Art ◽  
Waste Incineration ◽  
High Temperature Corrosion ◽  
Self Healing ◽  
Waste Gas ◽  
Innovative Process ◽  
Lower Porosity ◽  
Nickel Based Alloy

Service and downtimes of waste incineration plants generate high expenses for their operators. State of the art is to protect high corrosion exposed components by cladding them with a nickel based alloy. The welded overlay is 2-3 mm thick and very expensive. It needs to be repaired at each service interval. An alternative coating consists of a thermal sprayed multilayer of a nickel based bondcoat and a ceramic topcoat. Thickness and costs of this multilayer are assumed to be in the range of about 10% of the currently used coating. A solvothermal treatment chemically densifies the coating. This leads to a significantly lower porosity whilst improving cohesion and hardness properties. This innovative process leads to a self-healing layer caused by the high temperature waste gas exposition as the driving force.

Corrosion Mechanisms and Alloy Performance in Waste-to-Energy Boiler Combustion Environments

2004 ◽  
Author(s):  
George Y. Lai
Keyword(s):  
High Temperature ◽  
Combustion Products ◽  
High Temperature Corrosion ◽  
Waste To Energy ◽  
Vapor Pressures ◽  
Boiler Tube ◽  
Metal Chlorides ◽  
Protection Method ◽  
High Vapor ◽  
Corrosion Mechanisms

The combustion of municipal solid waste in a boiler for power generation produces a very corrosive environment for the boiler tube materials. The environment contains HCl, SO2, various metal chlorides and sulfates along with typical combustion products. Due to their low melting points and high vapor pressures, metal chlorides are believed to be primarily responsible for the boiler tube corrosion problems encountered in waste-to-energy (WTE) boilers. Without some sort of corrosion protection method, the standard materials of the construction for the boiler, such as carbon and Cr-Mo steels, are subject to severe high temperature corrosion attack. The present paper discusses the possible modes of high temperature corrosion for waterwalls and boiler tubes in the convection section, and the prevailing protection method for these components as well as the performance of various alloys in these hostile combustion environments.

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