TITLE:
Hot Blast Flow Measurement in Blast Furnace in Straight Pipe
AUTHORS:
Ricardo S. N. Motta, Edson C. Bortoni, Luiz E. Souza
KEYWORDS:
Blast Furnacés Tuyeres; Straight Pipe; Hot Air Flow; Coal Injection
JOURNAL NAME:
Modern Instrumentation,
Vol.2 No.4,
September
30,
2013
ABSTRACT: This article shows an innovative
method to model and validate the hot air flow through the blast furnacés
tuyeres. This study will be the basis for flow measurements implementation and
safety interlocks for the pulverized coal injection. The flow measurements were
taken in the blast furnace down leg pipes by installing refractory Venturi
tubes. The system for the calculation of differential pressure takes into
consideration the dimension of the Venturi, the air density and
compressibility. The objective is to specify the flow transmitters required to automate a control system
and implement safety interlocks for the coal injection plant.