1 Scope
This standard specifies the technical requirements for acceptance, acceptance rules and relevant test methods for globular ion exchange resins used in water treatment in fossil-fired power plant.
This standard is applicable to the acceptance of the resins in various ion exchangers used in water treatment in fossil-fired power plant.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding the corrections), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For any undated references, the latest edition of the document referred to applies.
GB/T601 Chemical Reagent-Preparations of Standard Volumetric Solutions
GB/T 603 Chemical Reagent-Preparations of Reagent Solutions for Use in Test Methods
GB/T 1631 Classification, Designation and Types of Ion Exchange resin
GB/T 5475 Methods for Sampling Ion Exchange Resins
GB/T 5757-1986 Determination for Water Retention Capacity of Ion Exchange Resins
GB/T 5758 Determination for Particle Size Range, Effective Size and Uniformity Coefficient of Ion Exchange Resins
GB/T 5759-2000 Determination for Water Retention Capacity of Anion Exchange Resins in Hydroxylic Form
GB/T 5760-2000 Determination for Exchange Capacity of Anion Exchange Resins in Hydroxylic Form
GB/T 8144-1987 Determination Method for Exchange Capacity of Cation Exchange Resins
GB/T 8330-1987 Method for the Determination of True Density of Ion Exchange Resins in Wet State
GB/T 8331-1987 Method for the Determination of Bulk Density for Ion Exchange Resins in Wet State
GB/T 11991 Ion Exchange Resins-Determination for Welling upon Complete Conversion
GB/T 12598 Determination for Sphericity of Ion Exchange Resins after Attrition of Osmotic-attrition
DL/T 771-2001 Guide for Selecting Ion Exchange Resins Used in Water Treatment of Thermal Power Plant
3 Model, Appearance, Free Moisture and Delivery Status of Product
3.1 Product model
The model of ion exchange resins used in water treatment in fossil-fired power plants shall comply with GB/T 1631. See Table 1 for the designation of reins of the same model but different application.
In the presence of free moisture, its quantity shall be deducted prior to measurement.
3.4 Delivery status (if not specified by the user)
3.4.1 The delivery status of strong acid cation exchange resin is sodium model.
3 4.2 The delivery status of weak acid cation exchange resin is hydrogen model.
3.4.3 The delivery status of strong base cation exchange resin is chloride model.
3.4.4 The delivery status of weak base cation exchange resin is free amine model.
4 Technical Requirements
The physical and chemical properties of various ion exchange resins used in water treatment in fossil fired power plant shall be in accordance with those specified in Tables 3~14. See Appendix A for the technical requirements of gel- and macro-reticular-type acrylic acid series ion exchange resins.
Table 3 Technical Requirements of 001× 7 Strong Acid Styrene Cation Exchange Resins (Hydride Model) / (Sodium Model) Used in Water Treatment
