Recovery boiler back-end heat recovery

Sustainability and efficient use of resources are becoming increasingly important aspects in the operation all industries. Recently, some biomass-fired boilers have been equipped with complex condensing back-end heat recovery solutions, sometimes also using pumps to upgrade low-grade heat. In kraft boilers, however, scrubbers still mainly for gas cleaning, only simple solutions. this paper, we process simulation software study potential improve power generation energy efficiency by applying on a boiler. Different configurations considered, including pumps. Potential streams serve as sinks considered evaluated. Lowering boiler flue temperature approximately 65°C significantly decreases losses. The can be recovered hot water, which is used partially replace low-pressure (LP) steam, making more steam available turbine portion increased generation. results indicate that plant, 1%–4% additional electricity could generated. Nordic mill provides district heating, even generation, up 6%, achieved. Provided availability sufficient low-temperature heat, well swallowing capacity utilize LP scrubbing possibly upgrading appears potentially useful.