Boilers for the Paper & Packaging Industry

We supply a range of boilers for the paper & packaging industry that are used in the paper and packaging mills.  These boilers are for the process, electrical power, and economic reasons (in the Kraft process, specifically).

The steam that is produced in the boilers is used to cook wood chips and chemicals. Steam is then sent to dryer cans to remove the water from the sheet that the drainage, vacuum, and mechanical pressing sections of the paper machine can’t accomplish. The steam from the boilers is also used throughout the mill in heat exchangers, steam-traced piping, stock chests, etc.

Boilers in the Kraft Process

In the Kraft Recovery Process (liquor loop), white liquor is used to cook wood chips.  This yields pulp and weak black liquor (separated by washing in multiple steps). This weak black liquor is concentrated in evaporators (another large steam user) to produce fuel for the recovery boiler(s) and can be used to produce power and process steam. The inorganic portions fall into the smelt tank and are dissolved to produce green liquor. This green liquor is then re-causticized to produce white liquor (hence the term liquor loop). This recovery loop aids in saving money by reducing waste of cooking chemicals, producing steam and producing power. Imagine if fresh cooking chemicals had to be purchased and used exclusively to cook the wood chips! The recovery loop, with the recovery boiler playing a key role, makes paper mill operations economical.

For more information on the correct Boilers for the Paper & Packaging Industry and our stock availability, please contact us.