FIELD: chemistry.
SUBSTANCE: composition for removing mineral deposits contains nitrile trimethylene phosphonic acid, methylimino dimethylene phosphonic acid, hydrochloric acid and an acidic corrosion inhibitor. The inhibitor used is a mixture of 2-(8-heptadecynyl)-4,5-dihydro-1H-imidazole-1-ethylamine (HDHIA) and (Z)-N-[2-[(2-aminoethyl)amino]ethyl]-9-octadecenamide (AEODA), taken in ratio of 9:1 to 4:1, respectively.
EFFECT: high efficiency of removal of mineral deposits and reduced corrosive wear of equipment to standard values when using the composition to wash power-generation and process equipment.
2 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| COMPOSITION FOR REMOVING HIGH-TEMPERATURE MINERAL SALT DEPOSITS FROM THERMAL POWER EQUIPMENT | 2000 |
|
RU2177458C1 |
| METHOD OF CLEANING HEAT EXCHANGE SURFACES OF SCALE | 0 |
|
SU1366858A1 |
| AGENT FOR REMOVING RUST, SCUM AND OTHER MINERAL DEPOSITS BASED ON GLYOXAL AND DERIVATIVES THEREOF | 2011 |
|
RU2482223C2 |
| QUICK-SETTING BACKFILLING MIX FOR WATER AND GAS INFLOW INSULATION IN LOW-TEMPERATURE OIL AND GAS WELLS | 2010 |
|
RU2439119C2 |
| METHOD FOR PREVENTION OF FORMATION OF DEPOSITS AND CORROSION | 1993 |
|
RU2065409C1 |
| ACIDIC COMPOSITION FOR TREATMENT OF FORMATION BOTTOM-HOLE ZONE | 2019 |
|
RU2723768C1 |
| METHOD FOR PREVENTING DEPOSITS OF NON-ORGANIC SALTS | 2013 |
|
RU2531298C1 |
| COMPOUND FOR DISSOLVING CARBONATE DEPOSITS | 0 |
|
SU1278304A1 |
| METHOD OF REMOVING SCALE-CORROSION SEDIMENTS FROM METAL SURFACES OF CARBON NON-ALLOYED STEELS | 2014 |
|
RU2581347C1 |
| INHIBITOR OF HCL ACID CORROSION OF STEEL | 2023 |
|
RU2806257C1 |
