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How to Address CCS Amine & WTE Boiler Corrosion

12 Sep 2024
EFD Technical Stage

WTE Boiler Corrosion

Waste to Energy and Biomass boilers are prone to suffering from aggressive fireside metal wastage mechanisms due to the highly corrosive environment (e.g. Chlorine, Sulphur and other molten salts) generated by burning the wide variety of available combustion fuels. Conventionally specified solutions to address fireside metal wastage mechanisms, such as shop applied Alloy 625 weld metal overlay, have been shown to suffer from accelerated wastage, due to corrosion combined with erosion under these combustion gas environment conditions.
This paper presents the technology development, testing and multiple field application case studies of an alternative, next generation thermal spray applied metal alloy boiler tube surface protection system for WtE and Biomass boilers.

CCS Amine Corrosion

Carbon Capture and Storage utilizes a number of different technologies to separate the carbon, the most common and established technology is an amine system whereby the CO2 is absorbed from the gas stream by the amine before being stripped out. The process vessels using Monoethanolamine (MEA) to separate out the CO2 are typically manufactured from carbon steel, but will require additional corrosion protection due to the high temperature corrosive environment in various parts of the process.

The process of Carbon Capture and Storage typically utilizes several newly built process vessels, which will use a Monoethanolamine (MEA) amine process to strip out the CO2. These vessels will be transported in sections/modules and assembled onsite.

Manufactured from carbon steel, these vessels, once onsite, would typically be installed with 316L stainless steel cladding. Due to challenges around pricing and availability of the cladding, the EPC contractors now research alternative solutions and have evaluated High Velocity Thermal Spray (HVTS) alloy cladding as a viable corrosion protection system alternative.

Integrated Global Services (IGS) has more than 20 years of experience protecting more than 300 MEA amine process vessels with extensive references in the Middle East, Europe, Africa, and North America.

HVTS offers several benefits compared to welding. It is a faster process that does not require any heat treatment and can safely and easily be applied on-site in the field.

This presentation will focus on presenting HVTS as a viable alternative to 316L cladding, offering EPCs more choice in material selection for their amine based CCS projects.

Colin Bateman, Asset Reliability Specialist - Integrated Global Services (IGS)