Improvement tissue expansion joints recigas system
The challenge
The maintenance department of a Dutch waste processor has had problems in its recig gas system for many years. As flue gases cool, condensation occurs where the acidic liquids released cause damage to both steelwork and critical fittings such as valves and compensators. As a result, expansion joints must be replaced every 1 - 1.5 years. These replacements are highly undesirable and costly.
At the customer's request, Hanwel has come up with a solution with a longer stand time that reduces the need for costly replacement work.
How did Hanwel help?
During a site visit, the problem first emerged. After reviewing and analyzing the problem, two possible solutions were proposed and discussed. Subsequently, both solutions were completely technically worked out and a quotation and drawings were produced to allow the customer to select the best solution. The customer then decided to replace the steel support flanges, weld ends and inner pipes in addition to the expansion joints.
During the next maintenance stop, the new steel parts would be welded-and the expansion joints assembled. Hanwel was asked to provide on-site assistance to ensure trouble-free commissioning.
The result
During the stop, Hanwel provided supervision during assembly and commissioning on site. During the work, the client found out on Thursday afternoon that several other fabric expansion joints needed to be replaced before the weekend. Due to Hanwel's presence on site, measuring and switching could be done quickly. With the help of our partner Bording Bellows, the expansion joints were delivered as early as 7:30 a.m. Friday morning and the plant was able to return to operation on time.
