PAPER INDUSTRY HEAT EXCHANGERS
DRYING AND SAVING IN THE PAPER INDUSTRY
The heat exchanger for the paper and cellulose industry is designed to obtain this valuable material which, since time immemorial, has been used for study and the dissemination of knowledge. From papyrus and parchment to modern paper, the paper industry has required processes such as drying, which over the years has been refined to advanced machinery and processes that use our steam heat exchangers (flash steam and live steam), superheated water heat exchangers, and thermal oil heat exchangers.
Our thermal transfer devices are part of the system used not only for drying but also for energy recovery in a sector where, being an energy-intensive industry, it is particularly important to make it profitable and minimize its environmental impact. We also contribute to water treatment. Let’s take a closer look:
1. Paper drying is done by different methods such as steam heated cylinders or hot air curtains. At this point BOIXAC intervenes with equipment such as finned heat exchangers, designed to withstand high pressures and corrosive environments such as cellulose and steam.
2. Energy recovery is essential in a paper industry that requires large amounts of energy. The steam from the cylinders that can be used for the drying process can come from a boiler. Here BOIXAC specializes in cross-flow, air-to-air or air-to-exhaust gas exchangers, which manage to pre-heat the inlet air of the boilers, thus minimizing their consumption. An essential factor for optimizing environmental responsibility and aligning with the European Green Pact.
3. The treatment of wastewater from the cleaning and drying process is important in order to ensure a certain temperature that allows the correct chemical and biological processing. With our heat and fluid exchange coils, suitable for fluids with solid contents, we control the temperature of the water in the tanks as well as their energy recovery.
Solutions made of noble materials resistant to demanding environments, with openings for easy inspection and sanitation.
Heat exchanger for the paper industry
Boiler economizer
Heat recovery for boiler exhaust gases, ideal for working with thermal oil, superheated water or steam.
Exhaust gases heat exchanger
Heat exchanger for exhaust gases, even in dirty environments, preheating clean air and optimizing energy efficiency in the paper industry.
Helical fins heat exchanger
Finned heat exchanger to heat the paper during the drying process, either by hot air injection or by Yankee or multiple cylinders.