Bir Sıvı Amonyak Depolama Tankının Elasto-Plastik Deformasyonu
Bu çalışma, bir kimyasal gübre fabrikasında kullanılan 10.000 ton kapasiteli çift cidarlı sıvı amonyak depolama tankının iç taban sacının elasto-plastik deformasyonunu sunmaktadır. Hammaddenin -33°C'de stoklandığı tankın taban sacında karşılaşılan problemin, tankın bir önceki iç bakım sonrası hızlı soğumaya maruz bırakılmasından kaynaklandığı tespit edilmiştir. Taban sacından kesilen numune üzerinde yapılan mekanik testler, plastik deformasyonun %1,94 oranında gerçekleştiğini ancak tokluğun değişiklik gerektirmeyen bir seviyede olduğunu göstermiştir. Bu nedenle ilgili standart API-620'nın belirttiği 1°C/saat ısıtma ve soğutma kuralına uyularak mevcut taban sacının kullanımına devam edilebileceği öngörülmüştür.
Anahtar Kelimeler:
Elasto-plastik deformasyon, amonyak tankı, Bauschinger etkisi, düşük basınçlı tank, hızlı ısıtma ve soğutma
Elasto-Plastic Deformation of a Liquid Ammonia Storage Tank
This paper presents the elasto-plastic deformation of the inner bottom plate of a 10,000 tonnes capacity double wall liquid ammonia storage tank used in a chemical fertilizer plant. It has been determined that the problem encountered in the bottom plate of the tank where the raw material is stocked at -33°C is caused by the rapid cooling of the tank after the internal maintenance. Mechanical tests performed on the sample cut from the bottom plate showed that the plastic deformation occurred at a rate of 1.94%, but the toughness was at a level that did not require a change. Therefore, it is foreseen that the use of the bottom plate can be continued by complying with the 1°C/hour heating and cooling rule in accordance with the relevant standard API-620.
Keywords:
Elasto-plastic deformation, liquid ammonia tank, the Bauschinger effect, low pressure tank, rapid heating and cooling Elasto-plastic deformation, liquid ammonia tank, the Bauschinger effect, low pressure tank, rapid heating and cooling,
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- ISSN: 1300-3402
- Yayın Aralığı: Yılda 4 Sayı
- Başlangıç: 1957
- Yayıncı: TMMOB MAKİNA MÜHENDİSLERİ ODASI
Sayıdaki Diğer Makaleler
Bir Sıvı Amonyak Depolama Tankının Elasto-Plastik Deformasyonu
Gökçe Mehmet GENÇER, Coşkun YOLCU, Fatih KAHRAMAN
Gaz Altı Ark Kaynağı Prosesinde Kaynak Sırası ve Kaynak Penetrasyon Seviyesinin Ürün Ömrüne Etkileri
Ceren BİLGİLİ, Sibel UYGUN, Gizem YILMAZ