I D
× COMMENTARYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEENVIRONMENTAL MANAGEREQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More

Comment Processing & Handling

Ceramic ferrules

By Chemical Engineering |

Blasch Precision Ceramics (Albany, N.Y.; edlinks.chemengonline.com/6899-548) has commercialized one-piece hex-head ferrules made of 99.6% alumina for applications in steam-methane reformers. The high-purity alumina is becoming popular as an alternative to high-grade metal alloys because it is virtually immune to chemical corrosion (metal dedusting); but up to now, only 95% alumina ferrules have been available, which can corrode at an elevated rate in high-temperature reducing environments, says the firm. The new ferrules are produced using Blasch’s proprietary NetShape manufacturing process. Hex-headed ferrules are replacing conventional ferrules and castable linings on waste-heat boiler tubesheets because the one-piece ferrules are designed to expand to closure at operating temperature, providing a seamless face that protects the tubesheet from metal dedusting. At cool down, the ferrules contract and separate, without generating the stresses that cause cracking in cast-refractory tubesheets.
Related Content

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Improving chemical production processes with IIoT and AI technologies
New filtration technology for highly corrosive media
PTA production: Lowering OPEX without compromising on quality
Sure that zero means zero in your zero-liquid discharge (ZLD) process?
How separation processes profit from Industrial Internet of Things (IIoT) solutions

View More

Live chat by BoldChat