Entegre Demir Çelik Fabrikasında Pulverize Kömür Enjeksiyon (PCI) Uygulaması

Öz

Pulverize kömür (PC), metalurjik kok kömürü ile birlikte yüksek fırına şarj edilmekte ancak tamamı ile metalurjik kok kömürü yerine kullanılamamaktadır. Metalurjik kok kömürü yüksek fırın içinde sadece yakıt olarak değil, aynı zamanda fırının gaz geçirgenliğini düzenleme, demir cevheri ve flaks malzemelerinin fırın içinde düzgün dağılmasını sağlama ve termal stresleri azaltma gibi işlevleri de yerine getirmektedir. Pulverize kömür enjeksiyon (PCI) sisteminin de yüksek fırına, pozitif ve negatif bazı etkileri vardır. Olumsuz etkileri yok etmek veya en az seviyeye indirmek, olumlu etkilerinden de en iyi şekilde yararlanmak gerekmektedir. PCI’unun yüksek verimle kullanabilmesi, yüksek fırındaki tüm parametrelerin optimizasyonunun sağlanması ile mümkündür. Pulverize kömür enjeksiyonu süresince optimize edilmesi gereken tüm faktörlerin ve proses parametrelerinin optimum bir değer aralığında olması gerekmektedir. Bu çalışmada, bir entegre demir çelik fabrikasında yakıt olarak PCI kullanımından önce ve sonra elde edilen kalite değerlerinin yüksek fırın performansına etkileri araştırılmıştır.

Anahtar Kelimeler

• Pulverize kömür
• Enjeksiyon
• Yüksek fırın
• Metalurjik kok
• Yakıt

Pulverized Coal Injection (PCI) Application in Integrated Iron and Steel Factory

Abstract

Pulverized coal (PC) is charged to the blast furnace along with metallurgical coke, but it cannot be used as a substitute for metallurgical coke completely. Metallurgical coke not only serves as fuel in the blast furnace, but also performs functions such as regulating the gas permeability of the furnace, ensuring uniform distribution of iron ore and flux materials in the furnace and reducing thermal stresses. Pulverized coal injection (PCI) system also has some positive and negative effects on the blast furnace. It is necessary to eliminate or minimize the negative effects and make the most of the positive effects. Using PCI with high efficiency is possible by optimizing all parameters in the blast furnace. All factors and process parameters that need to be optimized during pulverized coal injection must be within an optimum range of values. In this study, the effects of quality values obtained before and after the use of PCI as fuel in an integrated iron and steel factory on blast furnace performance were investigated.

Keywords

• Pulverized coal
• Injection
• Blast furnace
• Metallurgical coke
• Fuel

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