Normal view MARC view ISBD view

CFD simulation of oxygen penetration in EAF using supersonic injection / Nur Hidayaht Hamzah

By:

Nur Hidayaht Hamzah [author.]

Material type: Text

text

Media type:

unmediated

Carrier type:

volume

ISBN:

THE0008038(Local)

Subject(s):

Dissertation note: Project paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2010 Abstract: This study investigate the oxygen supersonic jet injection using the Laval nozzle system which applied in an Electric Arc Furnace. Two nozzles with same inlet and outlet diameter but with different throat diameter which were used in Electric Arc Furnace at Perwaja Steel Kemaman have been selected as research case study. The effects of different throat diameter on the performance of the supersonic injection were studied and the effectiveness and shortcoming of the developed modes were highlighted. A model structure with higher ratio of oxygen to natural gas as the shroud gas has been proposed in this study to provide better protection to the main oxygen injection. Besides, the effects of different ratio combination of oxygen and natural gas as the shroud for main oxygen were also studied. Results were compared between the two nozzle model and different ratio combination of the shroud. It was discovered that nozzle with 18mm throat diameter performs better than 15mm throat diameter in producing high speed penetration region. Simulation results demonstrated that shroud of oxygen and natural gas with ratio of 2:1 performs better in protecting the main oxygen injection than shroud ratio of 1:1. Furthermore the case studies on the supersonic injection system based on real practiced data from Perwaja Steel namely KT injection system nozzle which used Laval nozzle shape injector.

Tags from this library: No tags from this library for this title. Log in to add tags.

Average rating: 0.0 (0 votes)

Holdings ( 2 )
Title notes ( 3 )

Holdings
Item type	Current library	Collection	Call number	Copy number	Status	Date due	Barcode
Final Year Report	UMPLIB GAMBANG	Reference	TP159.N6 H53 2010 rs Bc. (Browse shelf(Opens below))	1	Not for loan		0000063138
Final Year Report	UMPLIB GAMBANG	Reference	CD 5844 (Browse shelf(Opens below))	1	Not for loan		0000063139

Project paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2010

Bibliography : p. [53-54]

This study investigate the oxygen supersonic jet injection using the Laval nozzle system which applied in an Electric Arc Furnace. Two nozzles with same inlet and outlet diameter but with different throat diameter which were used in Electric Arc Furnace at Perwaja Steel Kemaman have been selected as research case study. The effects of different throat diameter on the performance of the supersonic injection were studied and the effectiveness and shortcoming of the developed modes were highlighted. A model structure with higher ratio of oxygen to natural gas as the shroud gas has been proposed in this study to provide better protection to the main oxygen injection. Besides, the effects of different ratio combination of oxygen and natural gas as the shroud for main oxygen were also studied. Results were compared between the two nozzle model and different ratio combination of the shroud. It was discovered that nozzle with 18mm throat diameter performs better than 15mm throat diameter in producing high speed penetration region. Simulation results demonstrated that shroud of oxygen and natural gas with ratio of 2:1 performs better in protecting the main oxygen injection than shroud ratio of 1:1. Furthermore the case studies on the supersonic injection system based on real practiced data from Perwaja Steel namely KT injection system nozzle which used Laval nozzle shape injector.