| Print |

Reduce Start-up Time on Grade Changes with Your Paper Machine by Replacing Your Sparge System

This end-user needed to heat a 25,000 gallon [95,000 Liters] fresh water tank from 40°F [4°C] to 130°F [55°C] for use as whitewater make-up at grade change. The time to temperature it took for the water to reach temperature often exceeded 2 hours. The in-tank sparging system was very slow to heat the tank and running the paper machine cold at start-up. This often caused an outage of spec paper and lost production. It also required extensive maintenance.

Several options were presented to this mill. The solution they chose was a Solaris® S206 in-line heater for fresh water or tank recirculation. The Solaris, with its straight-through design is appropriate for several types of applications, and it fit well here because of the easy in-line installation with the existing fresh water line.

The tank currently fills 20°F [-7°C] hotter than the old sparge system and total time to temperature of 135°F [57°C] is less than 2 hours. The improved paper machine start-up time on grade changes has resulted in reduced broke generation and less time to change over grades.

Operating Conditions 1:
Heat fresh water during tank fill

Operating Conditions 2:
Recirculate side stream until 25,000 gallon tank reaches target temperature. Tank must reach temperature in 2 hours.

Click here to download the Application Brief

Unlike heat exchangers or spargers, the Hydroheater is designed only for your process conditions and unique application. We need to know a few things about your conditions, such as temperature range, steam pressure, and flow rates to size a heater specifically for you. When you click on our application data sheet and fill in the information, we will contact you within one business day. After an initial conversation with a sales representative or one of our engineers, we will then provide you with a custom quote for the Hydroheater best suited for your process.

Yes, I want to save energy and have more control using direct steam injection. Please complete the Application Data Sheet which helps us understand your process conditions such as fluid density, flow rates and temperature parameters.