Evaluation of environmentally friendly corrosion inhibitors for sour service

摘要

To fined corrosion inhibitors for sour service that not only are highly effective but also more acceptable to the environment than conventional types of inhibitor compounds, a performance screening of derivatives of polysuccinimide (PSI) and lactobionic acid was carried out for carbon steel inhibition under severe sour gas conditions (up to 4 MPa hydrogen sulfide [H{sub}2S]) in brine and brine/hydrocarbon (HC) mixtures at 90 to 130℃ with the rotated cage method. The results are compared with the performance of a well-established conventional sour gas inhibitor.