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
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR CHEMICAL CLEANING OF BODY CAVITIES OF WATER-COOLED ASSEMBLIES AND COMPONENTS OF WATER COOLING SYSTEM OF LOCOMOTIVE DIESEL FROM SCALE AND CORROSION DEPOSITS | 2014 |
|
RU2550416C1 |
| METHOD FOR CHEMICAL REMOVAL OF SCALE AND CORROSIVE DEPOSITS FROM INTERNAL CAVITIES OF HEAT-EXCHANGE EQUIPMENT | 2013 |
|
RU2532867C1 |
| PREPARATION FOR SCALING AND CLEANING OF INTERNAL SURFACES OF HEAT POWER AND PROCESS EQUIPMENT FROM SCALING DEPOSITS | 2020 |
|
RU2738662C1 |
| METHOD OF REMOVING SCALE-CORROSION SEDIMENTS FROM METAL SURFACES OF CARBON NON-ALLOYED STEELS | 2014 |
|
RU2581347C1 |
| SCALE REMOVAL COMPOSITION | 2013 |
|
RU2515829C1 |
| METHOD OF CHEMICAL CLEANING OF REVERSE OSMOSIS FILTERS BY SOLUTIONS OF ENVIRONMENTALLY SAFE COMPLEXES | 2016 |
|
RU2636712C1 |
| COMPOSITION FOR CLEANING HEAT-EXCHANGE EQUIPMENT FROM LODGMENTS | 2017 |
|
RU2654070C1 |
| MEANS FOR CHEMICAL CLEANING METAL SURFACES | 2016 |
|
RU2644157C1 |
| METHOD TO REMOVE SCALE FROM HEAT EXCHANGE EQUIPMENT | 2010 |
|
RU2449234C2 |
| ALKALINE PREPARATION FOR REMOVING SCALING AND CLEANING INTERNAL SURFACES OF HEAT POWER AND PROCESS EQUIPMENT | 2023 |
|
RU2791778C1 |
