The Pulp & Paper Industry

Solutions for the Pulp & Paper industry

At a pulp mill there are recovery boilers and bark boilers that benefit from Heat Management’s products and services. Heat transfer surfaces, SCRs and ducts can be kept clean in a more efficient, and environmentally friendly way, resulting in large savings and production bottlenecks being removed. For these applications, Heat Management offer:

  • Optimized steam sootblowing
  • Big data operation analysis
  • Infrasound cleaning.

Book web meeting

You can book a web meeting where we discuss how to optimize your steam soot blowing system. This web meeting will be the first step in getting a quote on a solution, including an analysis of the savings and improvements you can achieve.

Optimized steam soot blowing

Soot blowers in recovery boilers are generally operated non-stop, to keep the flue gas path clean and prevent the fouling and sintering of accumulations on heat exchanger surfaces. In many cases this is not enough, with resulting downtime for manual cleaning. Our optimization can increase soot blowing capacity by 100 %, without installing more soot blowers or steam headers. By introducing a simple local control on each soot blower steam (poppet) valve, existing soot blowers can be upgraded to one-way soot blowing, without taken the boiler down and disrupting the chemical recovery process. During boiler shutdown, the control system is upgraded to achieve overlapping operation of soot blowers. The technology constitutes a step-change in soot blowing technology, doubling the capacity (starts per day) without installing more soot blowers or consuming more steam. You can read more about optimised steam soot blowing here.

By equipping the sootblowers with our actuators for regulating the steam flow locally we can obtain:

  • Up to 50 % reduced steam consumption of the steam soot blowers
  • Double the soot blowing frequency
  • A combination of above

Big data operation analysis

Our optimization of soot blowers is often accompanied by a study using our big data analysis software. Studying operational data will reveal which heat exchangers need most cleaning and will quantify the benefits, e.g. how much the average steam temperature can be increased by soot blowing more frequently in the most problematic areas. Correlation analysis of all operational parameters will show how changes in one parameter influce other parameters. You can read more about big data operation analysis here.

 Infrasound cleaning 

Recovery boilers typically suffer from build-up of deposits in the duct between ECO and ESP (electrostatic precipitator). Some have clogging issues forcing early outages for manual cleaning, resulting in production losses. Infrasound cleaning (low frequency acoustic cleaning) is a fouling prevention method with unique power and cleaning range. You can read more about infrasound cleaning here.

Typical results are:

  • Solving clogging issues
  • Drastically reduced need for manual cleaning
  • Stable pressure drop over the duct