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See Chinese contents: DL/T 805.4-2016 DL/T 805.4-2016: Guideline for cycle chemistry in fossil plants Part4-feedwater treatment
This part of the DL/T 805 gives the principles and control indicators for the treatment of feedwater during operation and startup of thermal generator set. This part of DL/T 805 is applicable to the feedwater treatment of the steam drum boilers with superheated steam pressures of 3.8 MPa (gauge pressure) and above as well as the direct flow boilers of 5.9 MPa (gauge pressure) and above. This part of the DL/T 805 does not apply to the feedwater treatment of gassteam combined cycle units.
