Process and Design Modifications to Retrofit a Conventional Wood Plant
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United States of America Patent
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Issued Date -
Dec 21, 2023
app pub date -
Jun 15, 2023
filing date -
Jun 16, 2022
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Abstract
A transformation of an existing, conventional southern yellow pine (SYP) lumber pressure treatment plant that previously impregnated wood with non-sustainable chemicals, to using environmentally friendly sodium silicate formulations. The transformation may include adding heated storage tanks for solutions of siliceous solutions and adding a heater to an existing storage tank, installing delivery lines capable of handling high pH, viscous solutions between at least the pre-existing vacuum pressure impregnation tank and the added or existing heated storage tank, a CO2 storage tank with associated vaporizer and a CO2 recovery system, associated lines to and from the pre-existing vacuum pressure impregnation tank and the CO2 storage tank and the CO2 recovery system, pumps for circulating the solutions, and a thermal management system including: insulation and cladding on one or more of the tanks and lines, heat tracing on all level indicators; and insertion of heating coils in working tanks.
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