| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to chemical cleaning of inner cavities of heat exchange equipment and can be used for cleaning of internal combustion engines cooling systems or other units from scale-corrosion deposits. Method includes washing treated cavity with flushing solution reagent at its temperature of 50-80 °C and periodic change of flow direction through cavity, wherein solution is used containing following component ratio, wt%: sulphamic acid is 2-5, EBC is 1-1.5, corrosion inhibitor is 0.1-0.2, water is balance. Then, flushing reagent solution neutralisation is conducted with alkaline solution and an anti-corrosion treatment by flushing with passivating solution.EFFECT: method enables to avoid use of reagents, having negative impact on environment.1 cl, 1 tbl |
