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Doing an install way up high on a preheater tower downcomer at a cement plant. The old expansion joint here failed and we were called in to supervise and verify the install of the replacement that we designed for them.

By |2018-03-21T00:04:15+00:00March 21, 2018|Projects|Comments Off on Doing an install way up high on a preheater tower downcomer at a cement plant. The old expansion joint here failed and we were called in to supervise and verify the install of the replacement that we designed for them.
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This is an expansion joint that feeds a liquid mixture of ash and silica out of the bottom of a fluidized bed boiler. The ash that comes through this tied-universal bellows is between 1200-1800 degrees F. In order to handle such high temperatures the expansion joint has a refractory-lined pipe that functions as a flow-liner inside of it and is only anchored at one end, so the other can slide freely and compensate for expansion and contraction.

By |2018-03-21T00:00:31+00:00March 21, 2018|Projects|Comments Off on This is an expansion joint that feeds a liquid mixture of ash and silica out of the bottom of a fluidized bed boiler. The ash that comes through this tied-universal bellows is between 1200-1800 degrees F. In order to handle such high temperatures the expansion joint has a refractory-lined pipe that functions as a flow-liner inside of it and is only anchored at one end, so the other can slide freely and compensate for expansion and contraction.
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If you beat on your metal bellows Expansion Joints with a sledge hammer in order to try and knock the material inside loose, the metal bellows become ineffective and may as well not be there. Also, this particular metal bellows has a flow-liner (or shield) inside, so the person who hit it probably didn’t even unplug the pipe like they’d hoped to.

By |2018-03-20T23:58:47+00:00March 20, 2018|Projects|Comments Off on If you beat on your metal bellows Expansion Joints with a sledge hammer in order to try and knock the material inside loose, the metal bellows become ineffective and may as well not be there. Also, this particular metal bellows has a flow-liner (or shield) inside, so the person who hit it probably didn’t even unplug the pipe like they’d hoped to.
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Cement plants are full of fans and expansion joints that see a lot of abrasive particulate. We can help you design your fans and expansion joints to last longer by using the right abrasion-resistant materials for the job.

By |2018-03-20T23:55:34+00:00March 20, 2018|Projects|Comments Off on Cement plants are full of fans and expansion joints that see a lot of abrasive particulate. We can help you design your fans and expansion joints to last longer by using the right abrasion-resistant materials for the job.
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This Zero Liquid Discharge fan was running at 7200RPM with chlorides in the gas stream and had a catastrophic failure. It threw a chuck of the fan wheel straight through the steel housing and out the wall of the building it was inside of. You might think stainless steel can handle anything, but it sure doesn’t like chloride stress corrosion cracking.

By |2017-07-13T19:35:44+00:00July 13, 2017|Projects|Comments Off on This Zero Liquid Discharge fan was running at 7200RPM with chlorides in the gas stream and had a catastrophic failure. It threw a chuck of the fan wheel straight through the steel housing and out the wall of the building it was inside of. You might think stainless steel can handle anything, but it sure doesn’t like chloride stress corrosion cracking.
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Flanged-and-flued expansion joints in an acid plant. If done right these expansion joints have a very long lifetime, they’ll last for decades. That’s why you want to do your pressure thrust, anchor strength, and movement calculations properly.

By |2017-07-13T19:28:16+00:00July 13, 2017|Projects|Comments Off on Flanged-and-flued expansion joints in an acid plant. If done right these expansion joints have a very long lifetime, they’ll last for decades. That’s why you want to do your pressure thrust, anchor strength, and movement calculations properly.
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