Process for reducing plume opacity

Details Process for reducing plume opacity Process for reducing plume opacity

F - Mech Eng,Light,Heat,Weapons

23

J

F23J 11/00 (2006.01) F23J 7/00 (2006.01)

Patent

CA 2552979

Plume is mitigated by targeting treatment chemicals to locations in a furnace, which are connected with plume opacity. The effectiveness of targeted in furnace injection, in fuel introduction and in furnace introduction of slag and/or corrosion and/or plume control chemicals are determined, as are the effectiveness of targeted in furnace injection, in fuel introduction and in furnace introduction of combustion catalysts. Then, the effectiveness of various combinations of the above treatments are determined, and a treatment regimen employing one or more of the above treatments is selected. Preferred treatment regimens will contain at least two and preferably three of the treatments. Chemical utilization and boiler maintenance can improved as LOI carbon, slagging and/or corrosion are also controlled.

Selon cette invention, on atténue le panache par ciblage de produits chimiques de traitement sur des points d'un four qui sont liés à l'opacité du panache. On détermine l'efficacité de ciblage au cours de l'injection dans le four, de l'introduction de combustible et de l'introduction de produits chimiques régulant le laitier et/ou la corrosion et/ou le panache, ainsi que l'efficacité de ciblage lors de l'injection dans le four, de l'introduction de combustible et de l'introduction de catalyseurs de combustion. On détermine ensuite l'efficacité de diverses combinaisons des traitements précités et on sélectionne un régime de traitement utilisant un ou plusieurs des traitements précités. Des régimes de traitement préférés contiennent au moins deux, et de préférence trois des traitements. L'utilisation de produits chimiques et la maintenance de la chaudière peuvent être améliorées, de même que la régulation du carbone à indice limite d'oxygène (LOI), de la scarification et/ou de la corrosion.

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