Pencegahan Terbentuknya Hidrat Dengan Insulasi Pada Operasional Pipa Gas Alam

  • Anggarana Setia Aji Politeknik Perkapalan Negeri Surabaya
  • Projek Priyonggo Sumangun Politeknik Perkapalan Negeri Surabaya
  • Endah Wismawati Politeknik Perkapalan Negeri Surabaya
Keywords: Heatloss, Aspen Hysys, Hydrate, Rockwool, Cellular Glass

Abstract

The raw gas content does not from within a natural gas industry process have properties that can cause hydrate potential in the piping system under certain temperature and pressure conditions. This can change the production process and prevent it because the pipe can prevent clogging, corrosion or even solve repairs not prevented. Maintaining the condition of the temperature and pressure of the pipe operation to remain stable one way so that the fluid conditions are not suitable in the conditions of hydrate formation. The simulation results using the Aspen Hysys software produce hydrate formation when the flow temperature conditions is 21.16 ˚C with the type of hydrate formed is type II consisting of 136 water molecules and occurs at the point where the pipe is located 280 m from wellhead. Installation of insulation is an alternative way to install piping operating systems. Therefore it is necessary to calculate engineering thickness of insulation to find out the best insulation material that can consider the safety of pipeline operations and prevent hydrate formation. Using materials that are widely used in companies, namely Rockwool and Cellular Glass. Calculation of thickness is done with a thickness of 50 mm, 75 mm, and 100 mm adjusted to full in the field. After determining pipe insulation, this final project also analyzes the suitability of insulation according to its standards. From the calculation, the lowest heat loss value is 100 mm thick cellularglass with a value of 20.77 Watt / m and a temperature loss of 0.49 ˚C. For standard classification, according to classes 1 and 4 based on the Norwegian Institute of Technology Standards (Norsok Standards)

Published
2021-01-31