Ion Exchange Resin for Thermal Power Plant Water Treatment Systems

Application

Ion Exchange Resins for
Thermal Power Plants

Samyang's TRILITE® ion exchange resins for thermal power plants are applied across water treatment facilities, from demineralized water (Demi. water) production to stator cooling water and boiler condensate polishing (CPP).

Key Features

The ion exchange resins used in thermal power plants are used for demi water systems,
cooling water, and condensate treatment. For demi water systems, various combinations of demineralization devices can be used.

In the case of condensate treatment, high operational exchange capacity, heat resistance, and physical-chemical strength are required to remove impurities present in the condensed water from steam passing through a turbine. TRILITE® ion exchange resins have a diverse delivery record in domestic and international thermal power plants and are contributing to our customers' competitive power supplies through stable quality control and technical support.

Condensate Polishing (CPP) vs. Stator Cooling Water

Condensate Polishing (CPP) vs. Stator Cooling Water Table
Category	Condensate Polishing (CPP)	Stator Cooling Water
Purpose	Removes impurities from boiler condensate after the turbine so it can be reused as boiler feedwater	Keeps the conductivity of the generator stator winding cooling water low to ensure insulation
Main Targets for Removal	Iron and copper deposits in boiler condensate; calcium (Ca²⁺), magnesium (Mg²⁺), iron (Fe³⁺), sulfate (SO₄²⁻), chloride (Cl⁻), and ammonium (NH₄⁺) ions	Fine particles in the cooling system, impurities from piping and equipment, copper oxide (CuO)
Operating Temperature	60–80°C, high temperature and high pressure	40–46°C (maintained by heat exchanger)
Operating Flow Velocity	5–120 m/h, system flow rate of 100 m³/hr or more	5–60 m/h
Operating Mode	Regenerable mixed bed ; backwash followed by resin separation → separate regeneration	Non-regenerable mixed-bed resin; no regenerant required
Replacement & Regeneration Cycle	Periodic backwash and regeneration ; regenerated when the load limit is reached	Full replacement at overhaul after 1.6–2 years of use
Key Resin Selection Criteria	· Durability in 60–80°C high-temperature condensate · Uniform-particle resin to prevent pressure loss at high flow velocity · Large density difference to ensure clean resin separation · Exchange capacity to handle ammonia load	· Exchange capacity sustained for 2 years without regeneration · Durability at 40–50°C operation · Uniform-particle resin to prevent channeling · Minimal impurity content

※ The above values are general reference figures and may vary depending on actual site conditions.

Water
Treatment Flow
in Thermal
Power Plants

Product

Overall For condensate treatment For stator coolant

Product Table
Product Name	Product Category	Information	TDS

Technical Data

Technical Data Case Study

Technical Data
Title	Download

FAQ

Q. What ion exchange resins are used for boiler condensate polishing in thermal power plants, and what performance is required?
Boiler condensate polishing in thermal power plants uses cation and anion exchange resins together. As steam from the turbine condenses, pipe corrosion products and trace impurities enter the water, so dedicated resins are required to remove them reliably. The TRILITE® product line is designed for these conditions and has an extensive supply record with thermal power plants in Korea and overseas.
- Operating capacity: Maintains stable ion removal performance even during long-term continuous operation
- Physical and thermal resistance: Withstands turbine steam condensation environments, including high temperatures of 50°C or above
- Mechanical strength: Minimizes resin breakage and performance loss even with repeated regeneration and long-term use
Q. How do ion exchange resins for Demi. water systems differ from those for condensate polishing?
The two systems differ in the condition of the feed water and, accordingly, in the required performance. A Demi. water system must purify raw water with relatively high impurity levels to pure water quality, whereas a condensate polishing system only needs to remove trace impurities entering water that has condensed from already purified steam. As a result, the required resin combinations and performance criteria are set differently.
- Demi. water system: Purifies raw water to pure water quality;
  various combinations of cation, anion, and mixed-bed resins can be used
- Condensate polishing system: Removes trace impurities and corrosion products;
  uses dedicated resins where high operating capacity and heat resistance are priorities
Q. Can ion exchange resins also remove metal ions such as copper, iron, zinc, and manganese from thermal power plant cooling water?

Yes. Ion exchange resins can remove metal ions such as copper, iron, zinc, and manganese contained in cooling water, HVAC cooling water, steam condensate,
and similar streams. However, removal efficiency varies with the ion concentration
of the feed water, flow rate, and system configuration, so a review based on on-site water quality data is required.

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Application

Ion Exchange Resins for Thermal Power Plants

Key Features

Condensate Polishing (CPP) vs. Stator Cooling Water

Water Treatment Flow in Thermal Power Plants

Product

Technical Data

FAQ

Q. What ion exchange resins are used for boiler condensate polishing in thermal power plants, and what performance is required?

Q. How do ion exchange resins for Demi. water systems differ from those for condensate polishing?

Q. Can ion exchange resins also remove metal ions such as copper, iron, zinc, and manganese from thermal power plant cooling water?

Ion Exchange Resins for
Thermal Power Plants

Water
Treatment Flow
in Thermal
Power Plants