Circulary

In its site in Estarreja, BONDALTI carried out a development project “Optimization of H2 Utilization” with a view to the total recovery of H2 generated in one of its production processes, reusing it as raw material in another production process.

Bondalti operates in two distinct production areas, chlorine-alkalis and aniline.

The project “Optimization of the use of H2” resulted from the need for better use of H2, a by-product of chlorine-alkali production, and used as raw material for the production of aniline.

This was accomplished by increasing the capacity of the H2 compression system, recovering all the H2 coming from the production process of the chlorine and minimizing waste.

The project, which began in January 2014 and ended in April 2015, was carried out internally by several departments: Production, Maintenance and Automation and Control.

• Valorisation of a by-product and the reduction of consumption of new raw materials.
• An investment of 700k € was necessary, which resulted in a return of around 300k € / year from the reduction of the H₂ acquisition for aniline production, reflecting the greater recovery of H₂ generated in the production of chlorine.

• The initial investment and the involvement of several departments together, were the main challenges to implement this project.
• Besides the technical work with the design and construction of the system, another challenge was the work related with technical evaluation and business process evaluation.

Inês Ribeiro / Sílvia Machado

+351210058600 / +351919325000

ines.ribeiro@bondalti.com / silvia.machado@cip.org.pt