Chung Hwa Pulp Corporation of Taiwan has selected Veolia Water Technologies’ HPD® evaporator technology to upgrade its Hualien Mill in Taiwan. This upgrade requires raising the capacity and heavy black liquor concentration of the black liquor evaporator trains, in order to meet the future production of the fiber line.
Chung Hwa Pulp's main equirements were the optimization of the steam consumption, without overloading the existing equipment and with minimal interaction with the existing plants. Of the two evaporation trains #3 and #4, only train #3 was modified, adding the seventh and eight effect, a parallel second effect and a back-up condenser. The output of both trains is concentrated at a new concentrator, integrated on train #3. The project will involve an additional 80 t/h H2O evaporation and a solids increase from approximately 66% up to 75%.