Low-carbon operation with enzymatic starch cooking

Moving towards a low-carbon operation with Enzymatic Starch Cooking

As part of the offering for board and paper makers, Valmet has developed Enzymatic Starch Cooking ZE (zero effluent) to improve operational reliability and quality of the starch cooking process. It consists of two separate units for binder starch and surface size starch with built-in-heat recovery and a new circulation system.

The new starch cooking system has a smaller carbon footprint as it uses less wasted starch compared to conventional cooking process. The patented innovation is in line with Valmet’s promise to offer its customers technologies for enabling an entirely carbon neutral paper production.

The cooking system offers a fully continuous operation even during the normal production stops, with circulation loops resulting in zero wasted starch. The system will constantly produce fresh, stable, and high-quality starch. The built-in heat recovery is utilized in integrated hot water preparation, resulting in energy savings and decreased load and cost for water treatment.

One system has already been delivered to Guangxi Jingui Pulp and Paper’s (GJPP) Qinzhou mill in China and was started up successfully in 2021.