Title

PNEUMATIC CONVEYOR DYNAMIC MODELS FOR A PULVERIZED COAL PLANT

PNEUMATIC CONVEYOR DYNAMIC MODELS FOR A PULVERIZED COAL PLANT

Authorship

Motta, Ricardo Sebastião Nadur; Birk, Wolfgang; Souza., Luiz Edival de

Motta, Ricardo Sebastião Nadur

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Birk, Wolfgang

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Souza., Luiz Edival de

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DOI

10.5151/2594-357X-21538

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Abstract

This article describes new advanced non-linear dynamic models for pulverized coal injection (PCI) plant into blast furnaces. A complete new approach for modelling is developed for the actual state-of-art PCI injection station. These models take into account all the physical dynamic laws and pneumatic conveyor variables allied to a modern updated digital control system (DCS). The models were constructed to operate in real time for the same DCS that controls the industrial PCI plant. Process validations include pressure and modern mass flow meter specially designed to check the models. New verification variables allowed by these equipments shows the functionality of the dynamic model-based, thermal, pressure profile and the particle velocity models. The models can be used mainly to improve coal flow stability control by means of modern control strategies and to prevent clogging lance caused by low coal particle speed and high solid to gas ratio.

This article describes new advanced non-linear dynamic models for pulverized coal injection (PCI) plant into blast furnaces. A complete new approach for modelling is developed for the actual state-of-art PCI injection station. These models take into account all the physical dynamic laws and pneumatic conveyor variables allied to a modern updated digital control system (DCS). The models were constructed to operate in real time for the same DCS that controls the industrial PCI plant. Process validations include pressure and modern mass flow meter specially designed to check the models. New verification variables allowed by these equipments shows the functionality of the dynamic model-based, thermal, pressure profile and the particle velocity models. The models can be used mainly to improve coal flow stability control by means of modern control strategies and to prevent clogging lance caused by low coal particle speed and high solid to gas ratio.

Keywords

Dynamic models; Coal injection; Blast furnace.

Dynamic models; Coal injection; Blast furnace.