Надежная защита промышленного оборудования от коррозии

Temperature:

Inlet of unpurified gas - 80..180 °C

• Active environment - Scrubber:
• Gypsum suspension
• Dissolved salts (chlorides, sulfides and others.)
• Gases (SO2, HCl, NOx and ithers
• Active environment – Head of a scrubber:
• Water steam (relative humidity 100 %)
• NOx, residues SO2, HCl and oth.
• Condensates (indicator pH 0 - 2)

Channels of unpurified gas:

• Head of gas-gas heater
• temperature: 130..180 °C
• chemical loads: when it is turned off, acid condensates will be concentrating (possibility of formation H2SO4)
• Bottom of gas-gas heater
• temperature: 80..150 °C
• chemical loads: condensates of highly concentrated acids
• Particularly in case of tubular heat exchangers there is a possibility of formation of highly concentrated oxidizing acids, which can damage the coating

Channels of pure gas:

• Bottom of scrubber
• temperature: 45..55 °C
• chemical loads: steam saturated gases, condensates with indicator pH 0 - 2
• Bottom of heater gas-gas
• temperature: 90..110 °C, at the bottom of the bypass input to 180 °C
• chemical loads: when it is turned off acid condensates will be concentrating during exploitation
• Particularly in case of tubular heat exchangers there is a possibility of formation of highly concentrated oxidizing acids, which can damage the coating

Flue gas duct:

• Temperatures:
• without heat exchanger: 45..55 °C
• with heat exchanger: 90..110 °C
• bypass part: 130..180 °C
• Chemical loads
• Possibility of formation of acid condensates, especially when it during exploitation

Suspension processing installation:

• Temperature: 55 °C
• Chemical loads: salt solutions with indicator pH 4-14
• Mechanical loads: possible erasure, formation of suspension of calx and gypsum