426-1245-1-SM.pdf - Prosiding Seminar Nasional Teknik Kimia \u201cKejuangan\u201d Pengembangan Teknologi Kimia untuk Pengolahan Sumber Daya Alam Indonesia

426-1245-1-SM.pdf - Prosiding Seminar Nasional Teknik Kimia...

This preview shows page 1 - 2 out of 8 pages.

Prosiding Seminar Nasional Teknik Kimia “Kejuangan” ISSN 1693-4393 Pengembangan Teknologi Kimia untuk Pengolahan Sumber Daya Alam Indonesia Yogyakarta, 18 Maret 2015 Program Studi Teknik Kimia, FTI, UPN “Veteran” Yogyakarta C2 - 1 Pemodelan dan Simulasi Secara Tunak dan Dinamik pada Pengeringan dengan Rotary Dryer Herry Santoso*, Viorie Gerrid S., Yogie Saputra Hartono, Aditya Putranto Jurusan Teknik Kimia, Fakultas Teknologi Industri, Universitas Katolik Parahyangan Jalan Ciumbuleuit 94, Bandung 40141, Telp. (022) 2032655, Fax. (022) 2031110 * E-mail : [email protected] Abstract Rotary dryer is one of the dryers that has many uses in chemical, pharmacy, and food industries. The model which represents the actual condition of rotary dryer is needed to make the designing and scaling-up of this dryer easier. The objective of this study is to proposed mathematical model of drying process with rotary dryer in the form of distributed parameter system and then simulate this drying process in its steady state and dynamic condition. The variables that was observed in this model are moisture in the solid feed, moisture in the drying air, temperature of the solid feed, and temperature of the drying air. This non-linear partial differential equations was modified to non-linear ordinary differential equations using finite difference method and then solved using numeric integration technique. The steady state simulation shows that changes in inlet variables have influence to the observed variables on the outlet of rotary dryer with the greatest effect is from the temperature of drying air and the lowest effect is from the temperature of solid feed. Furthermore, the dynamic parameters obatained from dynamic simulation can be used for controlling purpose. Keywords: distributed parameter system, modelling, rotary dryer, simulation Pendahuluan Rotary dryer merupakan salah satu alat pengeringan kontinu yang sangat luas penggunaannya dalam industri- industri kimia, farmasi, makanan, dan makanan ternak. Beberapa aplikasi penggunaan rotary dryer dalam industri adalah untuk pengeringan produk-produk olahan kacang kedelai pada industri pengolahan kacang kedelai (Luz dkk., 2010), untuk pengeringan gula setelah proses washing dan centrifugation pada industri gula (Rastikian dkk., 1999), untuk pengeringan sisa sayuran sebagai makanan ternak (Iguaz dkk., 2003), untuk pengeringan produk-produk farmasi (Mani dan Sokhansanj, 2008), dan untuk pengeringan ammonium nitrat pada industri pupuk (Abbasfard dkk., 2013). Hingga saat ini, pengeringan pada industri besar masih banyak yang menggunakan indirect rotary dryer . Proses pengeringan dengan indirect rotary dryer menyebabkan defisiensi perpindahan massa dan energi, serta bervariasinya kualitas dari produk akhir (Luz dkk, 2010). Oleh sebab itu direct rotary dryer merupakan salah satu unit pengering yang berpotensi besar penggunaannya dalam industri besar.
Image of page 1
Image of page 2

You've reached the end of your free preview.

Want to read all 8 pages?

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes