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Static Model Study on the Characteristics of Coke Oven Gas Dome Injection in COREX Melter Gasifier

Kou Mingyin, Zhou Heng, Wu Shengli, Shen Yansong

Archives of Metallurgy and Materials

2020

Vol. 65, iss. 1

275--281

Coke oven gas (COG) dome injection in COREX melter gasifier is recognized as one of effective method to reduce the amount of solid fuel used for gasification. In this work, a static model was developed to study the characteristics when COG is injected from dome. The critical bosh gas and critical fuel rate in COREX melter gasifier under different melting rate and coke rate were discussed. The amount of COG injection from dome under the critical fuel rates was studied. The results shows that when the heat of bosh gas reaching the critical value, the decrement of fuel rate decreases with the increase of melting rate and increases with the increase of coke rate. Under the critical fuel rate, the total volume of COG increases with the increase of melting rate and coke rate. After the COG injection, the amount and reduction capacity of the generator gas can meet the needs of reduction in shaft furnace. The findings of this work can be used as a theoretical basis to guide plant operations for COG injection.

Analiza zużycia paliwa w wielkim piecu przy zmiennych warunkach wsadowych

Stachura R., Klimczyk A., Bernasowski M.

Hutnik, Wiadomości Hutnicze

2016

Vol. 83, nr 11

470--472

W artykule przedstawiono model wskazujący na sposób ograniczenia zużycia paliwa w wielkim piecu. Warunki wsadowe wielkiego pieca nr 5 w Krakowie zmieniały się na przestrzeni ostatnich 4 lat w kierunku eliminowania grudek ze wsadu, a tym samym obniżenia bogactwa wsadu i zwiększenia jednostkowej masy żużla wielkopiecowego.

The article presents an analysis of the fuel rate minimization model at different burden condition. Burden condition at the BF No 5 in Cracow Ironworks during last four years changed toward eliminations of pellets from the burden. Thus to lowering of the iron share in materials and increase the unit weight of blast furnace slag.