Artikel

The Prediction of Scaling Silica Potential on Brine Flow Pipes from Cluster X to Cluster Y at Lahendong Geothermal Field

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In general, the geothermal reservoir in Indonesia is water dominated that produce steam and brine. The brine that produce is contained by silica, so that the brine needs a cooling process executed in pond. This process aims to precipitate silica contained in the brine, so that the occurrence of silica scaling in the pumping process towards the injection well could be avoided, yet based this study, the result shows that the silica still carried and deposited in the pipes during the pumping process. That result shows that there are 32.89 ppm of silica deposited on pipe while pumping process. Furthermore, the pressure and temperature changes trigger the solubility change of silica in brine and that caused about 1.4℃ heat loss to occurred while pumping process happened from inlet until outlet pipe. This study aims to model the prediction of silica scaling based on physical changes in the brine flow pipe. This modeling prediction connects the solubility of silica to temperature and pressure changes along the pipes which can ultimately be obtained in effective and efficient time in cleaning brine pipe. The calculation model designed and validated with data and the result shows that the appropriate mass flow rate is 143.306 kg/s and 0.363% for deposition factor of silica. From this model, it is possible obtain the inside diameter of the pipe after a certain time interval due to the presence of the silica precipitation using the equation: ID = -0.0085522624(time) + 0.3339882740. Furthermore, with the mass flow rate and the deposition of silica assumed constant, the inside diameter predicted will be almost full of scale silica after 35.1 months or 2.9 years.

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Ketersediaan

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Informasi Detail

Judul Seri

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No. Panggil

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Penerbit

Jakarta : INAGA., 2017

Deskripsi Fisik

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Bahasa

English

ISBN/ISSN

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Klasifikasi

NONE

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

Scaling Silica
Lahendong
Lahendong Geothermal Field

Info Detail Spesifik

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Pernyataan Tanggungjawab

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Versi lain/terkait

Lampiran Berkas

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