Title:

Development of Corrosion Risk Evaluation System in Acidic Geothermal System

Authors:

Norio YANAGISAWA, Masatake SATO, Koji SAKURA

Key Words:

corrosion rate, acidic fluid, material selection, Cr equivalent

Conference:

Stanford Geothermal Workshop

Year:

2023

Session:

Production Engineering

Language:

English

Paper Number:

Yanagisawa

File Size:

1162 KB

View File:

Abstract:

We have developed a tool "Geothermal power plant risk assessment system (acidic hot water version)" that can consider the optimal materials for power plant construction when the hot water for geothermal power generation is found to be acidic. If the geothermal resource is acidic hot water, the corrosion and damage to the power generation facilities are large, which is a factor in the decline in the utilization rate of geothermal power plants and the abandonment of development. By using this tool, it is possible to evaluate the corrosion rate and economic efficiency of each metal material, and se1ect the optimum material, including corrosion resistance performance and cost. In addition, preliminary examination of each metal material can be easily performed from the test data and related papers on the corrosion of the target metal material. This is expected to promote the utilization of acidic hot water resources, improve the utilization rate of geothermal power plants, and increase installed capacity.


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