Heat Management’s HISS (High Impact Sootblowing System) has demonstrated reductions of over 30% in sootblowing steam consumption at four black liquor recovery boilers, while maintaining or increasing boiler load.

These results are based on actual operating data collected directly from the facilities, comparing recovery boiler load and sootblowing steam consumption before and after HISS implementation.

 

Facility 1 – 31% Reduction in Sootblowing Steam Consumption

Following the implementation of HISS, the recovery boiler achieved:

• Boiler load: Increased by 6.3%, from 1,200 to 1,275 tDS/day.
• Sootblowing steam consumption: Reduced by 31%, from 14.5 to 10 t/h.

 

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Facility 2 – 30.4% Reduction in Sootblowing Steam Consumption

The second recovery boiler achieved significant steam savings alongside increased boiler load:

• Boiler load: Increased by 4.15%, from 2,050 to 2,135 tDS/day.
• Sootblowing steam consumption: Reduced by 30.4%, from 21.7 to 15.1 t/h.

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Facility 3 – 33.3% Reduction at Stable Boiler Load

At the third recovery boiler, HISS delivered substantial steam savings while maintaining the same boiler load:

• Boiler load: Remained stable at 1,131 tDS/day.
• Sootblowing steam consumption: Reduced by 33.3%, from 14.1 to 9.4 t/h.

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Facility 4 – 31.3% Reduction in Sootblowing Steam Consumption

The fourth recovery boiler demonstrated similar results, combining reduced steam consumption with increased boiler load:

• Boiler load: Increased by 7.8%, from 2,431 to 2,621 tDS/day.
• Sootblowing steam consumption: Reduced by 31.3%, from 25.9 to 17.8 t/h.

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Importantly, none of the four facilities required additional sootblowers, auxiliary equipment, or modifications to existing control instrumentation.

Additional Energy and Operational Benefits

Beyond the direct reduction in sootblowing steam consumption, HISS can contribute to improved overall recovery boiler efficiency through:

• Increased effective steam generation: More efficient cleaning of heat-transfer surfaces improves heat transfer and can increase steam generation.
• Reduced boiler feedwater consumption: Lower steam demand for sootblowing reduces the need for treated boiler feedwater makeup.

These additional benefits can further improve the overall economic performance of the installation.

 

Performance Backed by Guarantees

Heat Management combines demonstrated operational results with contractual performance guarantees.

These guarantees include maintaining or improving boiler availability and achieving a minimum 30% reduction in sootblowing steam consumption, with potential savings of up to 50%, depending on boiler characteristics and operating conditions.

HISS also offers the possibility of increasing sootblowing frequency by up to 100%, while maintaining agreed performance criteria for boiler campaign duration and steam consumption.

The above guarantees are absolute, Heat Management offers full reimbursement of the investment if the guaranteed results are not achieved.

 

Proven Results, Measurable Savings

The results from these four black liquor recovery boilers demonstrate how HISS can reduce sootblowing steam consumption by 30–33%, while maintaining or even increasing boiler load.

Depending on operating conditions, local costs, and investment requirements, the payback period can be less than 12 months.

By combining proven operational improvements with contractual performance guarantees, Heat Management makes sootblowing optimization a measurable investment in recovery boiler efficiency and performance.

 

To learn more about HISS Advanced and how it reduces steam consumption and boiler tube erosion, visit our HISS solutions page.

 

For more information about these cases, or to discuss how HISS could improve sootblowing performance at your mill, feel free to contact us today.