FIELD: heat engineering, possible use for steam-chemical cleaning of internal surfaces of boiler pipes from precipitations of both operational (salt) and atmospheric corrosion (ferrioxide) products.
SUBSTANCE: method includes blowing surfaces being cleaned with overheated steam with dosed injection of chemical reagent into steam. As chemical reagent, water solutions of complexions are used at concentration in steam-chemical environment ranging from 0,1 to 5,0% of mass, and cleaning is performed under steam pressure 0,2-0,7 MPa and temperature of boiler pipe surface heating in interval of 130-170°C.
EFFECT: increased efficiency of cleaning.
3 cl, 1 dwg, 3 app
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PREOPERATION PHYSICAL-MECHANICAL AND STEAM CLEANING AND PASSIVATION OF INNER SURFACE OF BOILER TUBES FROM SEDIMENTS | 2012 |
|
RU2599772C2 |
| METHOD FOR CLEANING AND PASSIVATION OF INNER SURFACE OF BOILER TUBES WITH SUCCESSIVE EXPOSURE TO CHEMICAL AGENT AND WATER-OXYGEN MIXTURE | 2013 |
|
RU2525036C1 |
| METHOD OF STEAM AND CHEMICAL CLEANING AND PASSIVATION OF SURFACES OF METAL PIPES | 2014 |
|
RU2557155C1 |
| METHOD OF CLEANING THE HEAT EXCHANGE SURFACE OF ATOMIC POWER STATION STEAM GENERATOR WITH WATER-COOLED POWER REACTOR (ITS VERSIONS) | 1991 |
|
RU2011948C1 |
| METHOD FOR CHEMICAL TREATMENT AND DEACTIVATION OF PRESSURED WATER-COOLED RESEARCH AND POWER REACTOR CIRCUITS | 2013 |
|
RU2558732C2 |
| PROCESS OF STEAM GENERATOR WASHING | 2002 |
|
RU2216701C1 |
| METHOD FOR REMOVING TRANSITION METALS AND RADIONUCLIDES FROM SOLUTIONS CONTAINING COMPLEXING AGENT | 2012 |
|
RU2458418C1 |
| CATALYST (VERSIONS), METHOD OF THEREOF PREPARATION (VERSIONS) AND METHOD OF PURIFICATION OF LIQUID RADIOACTIVE WASTES | 2014 |
|
RU2570510C2 |
| METHOD FOR PREVENTION OF FORMATION OF DEPOSITS AND CORROSION | 1993 |
|
RU2065409C1 |
| METHOD OF DISSOLVING SCALE-CORROSION DEPOSITS | 2014 |
|
RU2592952C2 |
