FIELD: industrial equipment scaling control.
SUBSTANCE: invention relates to petrochemical and chemical industries, power engineering, etc. and, in particular, to compositions eliminating scale from surfaces of pipes, heat-exchanges, and process apparatuses. Water-based descaling composition contains 0.09 to 10% inorganic substance selected from sodium, potassium, and ammonium persulfate, sodium, potassium, and ammonium persulfite; 2.0 to 8.0% aqueous hydrochloric acid; 0.0015-0.009% surfactant; and additionally, as corrosion inhibitors, 0.003-2% larch-origin polyphenolic compounds and 0.01-4% urotropin.
EFFECT: widened choice of descaling agents.
1 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF SCALE REMOVAL AND PROTECTION AGAINST SALT DEPOSIT AND CORROSION | 2007 |
|
RU2339586C1 |
| SCALE REMOVAL COMPOSITION | 2004 |
|
RU2257354C1 |
| COMPOSITION FOR REMOVING DEPOSITS AND SCUM FROM INNER SURFACES OF HEAT-EXCHANGE EQUIPMENT | 2007 |
|
RU2331591C1 |
| COMPOSITION FOR REMOVAL OF SCALE AND DEPOSIT | 2005 |
|
RU2324661C2 |
| SCALE REMOVAL COMPOSITION | 2013 |
|
RU2515829C1 |
| SCALE REMOVAL COMPOSITION | 2014 |
|
RU2554583C1 |
| PREPARATION FOR SCALING AND CLEANING OF INTERNAL SURFACES OF HEAT POWER AND PROCESS EQUIPMENT FROM SCALING DEPOSITS | 2020 |
|
RU2738662C1 |
| COMPOSITION FOR DISSOLUTION / REMOVAL OF HARDNESS SALTS | 2019 |
|
RU2715205C1 |
| METHOD FOR CLEANING INTERNAL SURFACES OF HEAT POWER AND PROCESS EQUIPMENT FROM SCALE DEPOSITS WITH THE DESCALER | 2020 |
|
RU2735015C1 |
| COMPOSITION FOR DESCALING HEAT-EXCHANGE SURFACES | 2010 |
|
RU2443637C2 |
