Martin® Hurricane Air Cannons Alleviate Ash Buildup
Products Used Hurricane Air Cannon
Product Types Used Air Cannon Solutions , Air Cannons
Industry Biomass
Customer Koda Energy Plant in Shakopee, Minnesota

Problem

Koda Energy Plant in Shakoppe, Minnesota

Koda Energy was battling significant buildup problems. “Efficient material flow is a critical element of biomass-fired boilers, and accumulation or blockages can take a big bite out of a plant’s efficiency,” explained Martin Engineering ServiceTechnician James Millis. "Ash buildup on furnace walls and tubes can choke the process, degrading equipment performance and introducing the potential for safety risks during cleanout." When maintenance crews noticed significant build-up, they first addressed the issue using a specialfuel additive to reduce furnace fouling, but the results were disappointing. “We found the additive approach to be expensive and largely ineffective,” said Koda’s Chief Engineer and VP of Operations Stacy Cook.

The company turned to manual cleanout techniques using an air lance. The method was more successful at removing the ash, but it required a daily work stoppage to complete the time-consuming process. “Daily air lancing did remove the build-up and helped us maintain full output, but we couldn’t reach all areas within the boiler,” Cook continued. “It also affected our production schedule and posed a potential safety risk for plant personnel,” he said. “To make matters worse, we were facing the possibility of a monthly shutdown to thoroughly clean out the boiler.”

Solution

Over the course of three scheduled maintenance outages, Martin Engineering crews installed a total of 12 Martin® Hurricane Air Cannons. The high-powered air cannons blast air to dislodge accumulations and restore process flow. Introduced by Martin Engineering in 1974, air cannon technology has since developed a proven track record around the world for relieving bottlenecks caused by material buildup in high-capacity storage and process.

Results

The Martin® Hurricane Air Cannon is a positive-acting, internal valve design developed to deliver maximum force output from a very direct air path, requiring minimal air consumption and a small footprint.

“Since the installation was completed, we’ve been able to maintain full boiler output without any hand lancing,” said Cook. “That has allowed us to keep the boiler wall surfaces clean, while avoiding the manpower requirements and potential hazards associated with hand lancing. We can now run the system at its rated capacity, without the negative effects previously posed by boiler fouling.” The operation has been so successful that the Minnesota High Tech Association (MHTA) named General Mills and Koda Energy as finalists in the Innovation Collaboration of the Year category for the 2010 Tekne Awards. The Tekne Awards recognize Minnesota companies and individuals who have shown superior technology innovation and leadership.

Resources

PDF - Printable Version of Case Study Download
Brochure - Air Cannons Download
Brochure - Martin Engineering Corporate Profile Download

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