Boiler water circulation optimization for a Waste-to-Energy plant: hydraulic studies, retrofit engineering and piping modifications
Improving boiler water circulation at a Waste-to-Energy plant
As part of a boiler improvement project at a Waste-to-Energy (WtE) plant in France, our client, a leading industrial boiler manufacturer, commissioned our engineering team to perform detailed water circulation studies within the steam generator.
The objective was to improve the boiler’s performance, enhance equipment reliability, and mitigate operational issues identified during plant operation. Based on the results of the circulation assessment, significant piping modifications were engineered to optimize both water distribution and steam-water evacuation throughout critical boiler circuits.
Project summary
3 months
France
Waste-to-Energy
5 experts
Boiler modification studies and piping design
Following the circulation analysis, several design modifications were developed to improve overall boiler performance.
New lower headers and connecting pipework were added to improve water supply to the second-pass waterwall panels. As a result, flow distribution within the evaporative circuit was significantly enhanced.
In addition, new upper headers and piping systems were designed to improve the evacuation of the front and rear roof circuits toward the steam drum. Consequently, the overall circulation pattern within the boiler was optimized.
Finally, our team produced detailed manufacturing drawings for the boiler sidewall panels after the plant operator identified localized buckling in several second-pass waterwall sections. These components required an almost like-for-like replacement to restore their mechanical integrity and ensure long-term operational reliability.
Managing complex modifications in an existing industrial environment
Accurate integration through 3D scanning and field surveys
One of the main challenges of this project was integrating new piping systems within an operating industrial facility.
A comprehensive 3D laser scan and detailed field surveys were conducted before starting the engineering phase. These activities provided an accurate representation of the existing environment and enabled efficient routing of the new pipework while minimizing installation constraints.
As a result, the proposed modifications were seamlessly integrated into the existing boiler configuration.
Improving boiler reliability and mechanical integrity
The implemented modifications significantly improve water circulation throughout the steam generator.
The risk of localized overheating previously observed on several waterwall panels is reduced. In turn, this helps preserve the mechanical integrity of the boiler pressure parts and contributes to longer equipment service life.
Moreover, the project enhances operational reliability while supporting the long-term performance of the Waste-to-Energy facility.
Circulation studies and piping design: our technical approach
Boiler engineering
The circulation study was the cornerstone of the project. It enabled our engineers to quantify flow distribution, identify critical areas, and accurately size all required piping modifications.
This engineering approach ensured adequate water circulation throughout the steam generation system and supported reliable boiler operation under all design conditions.
Industrial piping engineering
In industrial boilers, piping design plays a critical role in ensuring safe and efficient transport of feedwater and steam.
Our piping engineers and designers defined the appropriate materials, wall thicknesses, routing arrangements, and support systems required to achieve long-term mechanical integrity. At the same time, the design was optimized to control procurement, fabrication, and installation costs.
Supporting Waste-to-Energy projects with integrated engineering expertise
This project demonstrates how the combination of process engineering, boiler engineering, and piping engineering directly contributes to the success of industrial projects in the Waste-to-Energy sector.
Leveraging extensive industry experience, our teams support clients throughout the entire project lifecycle.
By combining technical expertise with practical field experience, we support industrial operators improve plant reliability, operational efficiency, and long-term asset performance.
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