Longview Fibre Paper & Packaging Counts on the CBEX Elite for High Efficiency and Low Emissions

Case Study

  • Company: Longview Fibre Paper & Packaging
  • Industry: Manufacturing
  • Location: Oakland, Calif.
  • Profile: Manufacturer of Kraft paper and corrugated products
  • Challenge: Company’s 300 HP boiler did not meet the district’s new air quality requirement of <9 ppm NOx
  • Solution: Replace current boiler with the CBEX Elite to increase efficiency and meet the NOx requirement
  • Results: CBEX Elite achieves <9 ppm NOx and has helped reduce operating costs

Longview Fibre Paper & Packaging Inc., in Oakland, Calif., produces Kraft paper packaging. It manufactures more than 70 grades of Kraft paper and containerboard and supplies a broad range of corrugated packaging and solid fibre slip sheets to 35 countries worldwide. To provide steam for their paper corrugation and cardboard sheeting processes, Longview was utilizing a 300 HP boiler. The plant was faced with meeting the Bay Area Quality Management District requirements of <9 ppm NOx about the same time the company’s ownership changed hands.

The new owners evaluated their options and decided to purchase a new boiler to increase plant efficiency and reduce emissions. The company collaborated with R.F. MacDonald, headquartered in Hayward, Calif., to design a boiler system and plant layout that was the best fit for their production needs, while also meeting the local air district requirements. 

Longview purchased the Cleaver-Brooks CBEX Elite firetube boiler at a steam pressure of 175 psi. The CBEX Elite maximizes heat transfer in the furnace radiant zone to achieve the optimum balance of high heat transfer with the lowest pressure drop. This enables the CBEX to achieve 10:1 turndown while maintaining 3% 02.

The new boiler was fire-tested at the facility and shipped as a package, ready for quick connection to utilities. R. F. MacDonald recommended that Longview replace its feedwater pumps to supply sufficient water for the larger capacity boiler, which the plant did.

Boiler installation was quick and simple. The existing boiler was removed on a Friday morning and the new CBEX Elite boiler was up and running and fully tested in time for Longview to continue production by Tuesday morning.

Longview today operates more efficiently at a higher capacity, which has reduced operating costs. The NOx emissions source test came in at 8 ppm NOx, below the 9 ppm NOx local requirement.  Should the air quality regulations get tougher, the CBEX Elite will be able to meet them. The boiler is capable of achieving 5 ppm NOx.