The new zero effluent starch cooking system will improve operational reliability and quality of the starch cooking process, as well as produce a smaller carbon footprint.
27th February, 2023
Leading global developer Valmet has launched its new Enzymatic Starch Cooking ZE (Zero Effluent) system, as an offering to board and paper makers. The new invention, with its improved design, wastes less starch in comparison to conventional cooking process and utilizes generated waste energy. Enzymatic Starch Cooking ZE has two pre-assembled and pre-tested skid units with patented process solutions for a super-wide capacity range of 20-120 tons of dry solids per day.
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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. These innovations are resulting in energy savings and decreased load and cost for water treatment.
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The patented innovation consists of two separate units for binder starch and surface size starch, along with features of built-in-heat recovery and a new circulation system. The cooking system provides a fully continuous operation even during normal production stops, with circulation loops avoiding starch wastage and producing fresh, stable and high-quality starch. The built-in heat recovery is utilized in integrated hot water preparation. The innovative features result in energy savings and decreased load and cost for water treatment. One of these systems has already been delivered and started up in 2022, to Guangxi Jingui Pulp and Paper’s (GJPP) Quinzhou mill in China.