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~ STD Sudah Digunakan PLTU di Korea

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~ STD Sudah Digunakan PLTU di Korea

STD Sudah Digunakan PLTU di Korea

JAKARTA- Sebanyak 65% dari 161 milyar ton cadangan batu bara Indonesia  berkualitas rendah (low rank coal), yakni hanya  mengandung   4.000 kilo kalori per kg.  “Melalui  teknologi pengering batu bara Steam  Tube Dryer (STD), kandungan  kalorinya  bisa ditingkatkan  kualitasnya menjadi 6.000 kkal per kg,” ungkap Deputi Teknologi Informasi, Energi dan Material Badan Pengkajian dan Penerapan Teknologi (BPPT) Dr Unggul Priyanto di sela-sela Workshop STD di Jakarta, baru-baru ini.

Menurut Unggul, guna meningkatkan kualitas batubara dengan teknologi STD, BPPT bekerja sama dengan Tsukishima Kikai Jepang.STD adalah salah satu teknologi yang sangat diperlukan oleh industri batubara dan kelisterikan Indonesia. Yang bisa mengurangi kadar air batubara dengan sistem pemanasan.“Dengan ditingkatkannya kualitas batubara tersebut, benda itu bisa digunakan sebagai bahan bakar pembangkit listrik tenaga uap (PLTU) dengan pembakaran yang ramah lingkungan, dan efisien,” ujarnya didampingi Koji Miwa, Managing Executive Officer Tsukishima Kikai Co, Ltd. dari Jepang.

Dikatakan Koji, cara kerja STD adalah dengan mengurangi kadar airnya dengan sistem pemanasan. Namun karena batu bara yang dikeringkan ini akan meninggalkan pori-pori yang besar dan mudah terbakar jika bersentuhan dengan udara, maka harus langsung digunakan, artinya STD sepanjang 40 meter ini harus ditempatkan dekat PLTU. Kehandalan teknologi STD seharga sekitar 50 juta dolar AS per unit dan berkapasitas maksimal 500 ton per jam itu, menurut dia, sudah terbukti karena sudah digunakan di tiga lokasi PLTU di Korea dan akan dialihteknologikan di Indonesia.

Disebutkan Unggul, untuk dapat beroperasi normal sepanjang 2012 PLN membutuhkan subsidi Rp90,9 triliun, padahal DPR hanya menyetujui subsidi sebesar Rp64,97 triliun dan membuat PLN terpaksa memangkas biaya operasionalnya secara besar-besaran agar tetap mampu melunasi utang Rp18,47 triliun.”Membakar batu bara muda (lignit) di PLTU menurunkan efisiensi. Pengalaman operasi terhadap sejumlah PLTU baru dalam program 10.000 MW menunjukkan adanya penurunan kapasitas yang signifikan bila dioperasikan dengan batubara berkalori di bawah 4.800 kkal per kg,” tambahnya.

Sementara itu, Dirjen Mineral dan batubara Kementerian ESDM Thamrin Sihite mengatakan, teknologi STD  ini bisa jadi solusi bagi PLN yang selama ini hanya mendapat pasokan batubara muda, berhubung 35 persen cadangan batubara berkualitas baik kita diekspor. (ju/sairi/an 

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