DEVELOPMENT AND STUDY OF INHIBITOR TO PREVENT INORGANIC SALTS DEPOSITION

Abstract

The paper deals with potential compositions developed for inhibiting scale deposition on oil refining equipment and pipelines based on inhibited hydrochloric acid, dispersant EС 9660A, laprol 4202- 2B-30 and water. The density of the produced compositions at 20 ºС is 1020-1050 kg/m3 , the kinematic viscosity at 20 ºС is 30-40 mm2 /s, the pour point is minus 5-15 ºС, the hydrogen index pH = 2-3. The efficiency of scale inhibition was evaluated by means of common practice which relies on the ability of the chemical to retain calcium and magnesium cations in simulated artificial mineral water. It was established that the compositions at a consumption rate of 50 mg/l generate a better protective effect (76.3-85.6 % ) as compared to cases when the inhibitor consumption was 40 mg/l (73.1-83.2 %) and 30 mg/l (70.4-78.1 %). The compositions with 10 % of mass fraction of laprol 4202-2B-30 have demonstrated higher protective properties.