Material Buildup? Blow it away!

Flow Activation

Material Buildup? Blow it away!

Air Cannons hammer Preheater Buildup at Nebraska Cement Plant
An American cement producer faced severe problems of material buildup in his preheater. Manual hydro-lancing meant process disruptions. With a new air cannon network now in place, the need for water blasting has been significantly reduced, material flows more efficiently, and maintenance personnel have drastically reduced the man-hours that were spent on manual removal.
(ed. WoMaMarcel - 26/2/2015)
<Blank Space>

A crew from Martin Services installed the entire system, including cannons, air lines and controls, as well as the company’s Thermo Safety Shields on each unit. Operating like trap doors, the sliding shields bolt in between the air cannon valve and mounting flange, helping to protect workers from exposure to severe heat, gases and high-temperature materials.

Stage II

Based on its success with the initial air cannon system, Ash Grove started planning a similar system for the plant’s second production line. For that operation, engineers designed a network of 15 additional air cannons, equipped with Martin Tornado Exhaust Valves. Described as the latest advancement in air cannon valve design, the patent-pending Tornado fires in response to a positive air pressure surge delivered by a solenoid valve, which can be located as far as 200 ft (approx. 60 m) away.

The unique design improves air cannon safety, since the discharge sequence requires a positive signal. Unlike nega-tive pressure-firing designs, a cannon equipped with the Tornado valve will not discharge accidentally in response to a pressure drop, so an air supply failure or broken line won’t trigger its firing. In addition, this positive-acting valve amplifies the discharge force, delivering up to 20% greater force than a standard XHV-equipped air cannon of the same size.

Results

With the new air cannon network in place, the Louisville plant has been able to significantly reduce the need for water blasting. Material now flows more efficiently, and maintenance personnel have drastically reduced the man-hours that were spent on manual removal.

“We still have to hydro-lance occasionally, because of changes in raw material or fuel,” Junkins explained. “But we don’t have the issues we had before. We can see that the air cannon system has paid for itself, by allowing us to maintain production rates without many of the interruptions and issues that water blasting created.”

Most read

Upcoming Events

Facebook