Regarding the issue of broken filter elements in fly ash filters
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Hello everyone; the fly ash filter S1501 is another key device in the gasification unit, with its filter element being the core component. Over the years, several units have experienced issues such as broken or contaminated filter elements to varying degrees. Although our company has not encountered this problem yet, we are paying close attention to it. On one hand, the cost of filter elements is relatively high – the current purchase price is around 6,500 yuan per element – and moreover, the maintenance process is time-consuming and labor-intensive. Therefore, we would appreciate it if you could share information regarding the operation of your own fly ash filters as well as any maintenance work that may have been carried out. Given the various operational problems encountered by other manufacturers, I believe that proper operation is important, but the installation of the filter elements and small tube sheets is equally crucial, with their concentricity being key.
1. Ceramic components are made by sintering ceramic powder, and they have issues such as high porosity and high resistance. Additionally, during the sintering process, particle bridging occurs, and this phenomenon further increases the resistance during operation. The resulting sharp increase in pressure drop leads to uneven airflow, causing local concentrations to become too high, which can easily result in the failure of the component. This in turn increases the frequency of backwashing for dust removal, while also reducing the service life of the backwashing control system. 2. Ceramic components are subject to stress due to long-term operation at high temperatures; coupled with high-pressure backwashing, fracture is inevitable. Abroad, ceramic components can operate successfully only at temperatures of 250 degrees. It didn’t run successfully even at over 340 degrees!
Basically, filter elements made by sintering metal fibers are still the more popular ones