| 摘要 |
PURPOSE:To recover sodium and Mg components by feeding MgCO3-base powder to the waste liquor burning section of a recovery boiler, forming MgO by calcination, introducing part of the MgO captured in the flue section into a soda dissolving vessel under the boiler, and introducing most of the remainder into the vessel together with smelted matter. CONSTITUTION:Waste liquor from a pump manufacturing stage is blown into a recovery boiler 10 as a mist from burners 12, heated air is fed from air feeding pipes 13, 14, and the waste liquor is burned to produce smelted matter. MgCO3- base powder is fed to the waste liquor burning section from feeding pipes 15, and MgO is formed by calcination. Part of the MgO is captured with a dust collector 22 connected to the flue section of the boiler 10, and it is introduced into the vessel 16 together with the smelted matter flowing downward along the wall of the boiler. They dissolve in water fed from a feeding pipe 17 and cause a reaction, and sodium and Mg components are recovered.
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