Cascades. has been granted a patent for a process that enhances the combustion of hot water extraction (HWE) derived liquor. The method involves pre-treating the liquor through filtration, evaporation, and pre-heating, followed by co-combustion with solid-containing biomass, including recovered solids from the pre-treatment process. GlobalData’s report on Cascades gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Cascades, Multi-pack shrink wrapping was a key innovation area identified from patents. Cascades's grant share as of June 2024 was 71%. Grant share is based on the ratio of number of grants to total number of patents.
Enhanced combustion process for hot water extraction liquor
The patent US12000087B2 outlines a novel process for combusting a hot water extraction (HWE) derived liquor, which is produced from wood materials. The process begins with subjecting wood to hot water extraction to create a mixture that includes fibers, water, dissolved solids, and suspended solids. This mixture is then separated into a fiber-enriched stream and a fiber-depleted stream. The fiber-depleted stream undergoes pre-treatment, which involves the removal of suspended solids and the concentration of dissolved solids, resulting in the HWE derived liquor. This liquor is then co-combusted with solid-containing biomass, which may include recovered solids from the pre-treatment process, wood residues, or other wood-based materials.
The claims further detail various methods of co-combustion, including supplying the solid-containing biomass through an independent inlet or simultaneously through the same inlet as the HWE derived liquor. The pre-treatment process can involve filtering and concentrating the liquor to achieve specific dissolved solids concentrations. Additionally, the process may include pre-heating the HWE derived liquor and atomizing it before combustion. The co-combustion can also occur in the presence of various fuels and combustion air, with specific methods for injecting air into the combustion chamber. Overall, the patent presents a comprehensive approach to enhancing the combustion of HWE derived liquor while integrating biomass materials, potentially improving energy efficiency and resource recovery in biomass energy systems.
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