Feed Planet Magazine Issue-Sayı: 29 March/April - Mart/Nisan 2021

68 ARTICLE • MAKALE FEED PLANET / MARCH - APRIL 2021 • MART - NİSAN 2021 3. Değirmencilik sektöründeki uygulamalar 1878 yılında ABD Minneapolis’teki WASTERBURN “A” Mill un değirmeninde yaşanan patlama, Dünyada bilinen ilk değirmen tesisi patlamasıdır ve bu olayda 22 kişi yaşamını yitirmiştir. tion in the environment, the duration the explosive ma- terial is kept and the effect that will occur as shown in Figure 1 and take measures accordingly. 2. Reasons of Dust Explosions In Tables 1-4, the reasons of dust explosions, the sectors most af- fected by dust explosions, the fa- cilities where dust explosions are observed and the properties of various explosive dusts in the food sector are presented respectively. As it is seen, there is a risk of dust explosion in almost all industries. In a sector such as the milling industry, where dusts of various characteris- tics and sizes are widespread, it is a must to evaluate the machinery, sys- tems and components both in the al- ready established facilities and the ones that are still in the process of production and to carry out their de- sign and operation safely within the framework of the legislation in force in Turkey. 3. Applications in the milling industry The explosion in the WASTER- Flour Un Corn flour Mısır unu Sugar Şeker Corn starch Mısır nişastası Milk powder Süt tozu Grain dust Tahıl tozu Min. Ignition en. (mJ) Min. Tutuşma en. (mJ) 50 40 30 30 50 30 Min. Cloud Ignition. temp. (°C) Min. Bulut tutuş. sıc. (°C) 380 380 370 290 490 490 Layer ignition temp. (°C) Katman tutuşma sıc. (°C) 360 330 400 330 200 300 Max. Exp. pressure (Bar) Maks. Patl. basıncı (Bar) 9,8 10,3 9,5 10,3 9,8 9,3 Explosion speed (Bar.m/s) Patlama hızı (Bar.m/s) 70 125 138 202 12,5 240 Min. Exp. conc. (g/m3) Min.Patl. kons. (g/m3) 125 60 60 110 60 150 Min. Oxygen cons. (%) Min. Oksijen kons. (%) 11 9 - - - - Table 4. Properties of various explosive dusts [20] Tablo 4. Çeşitli patlayıcı tozların özellikleri [20] Figure – 6 Wasterburn A Mill mill plant [19] Şekil – 6 Wasterburn A Mill değirmen tesisi [19]