Power generation
Condensate Polishing
In most cases, the makeup water is conditioned with ammonia in the watersteam circuit in order to create an alkaline environment, which aids corrosion protection. Nonetheless, impurities are created during operation in a water-steam circuit, which for the most part find their way into the condensate in the form of ions.
Moreover, even very small cooling water leaks can allow the ingress of inorganic salts and organic compounds that then increase the risk of corrosion or lead to foaming under the extreme pressure and temperature conditions in the boiler. Therefore, treatment with ion exchangers is sensible or necessary in many cases in order to ensure reuse of the condensate as boiler feed water.
Watersteam circuits are at the heart of all thermal power plants that generate electricity from fossil or nuclear fuels. Here, the water and steam serve as an energy carrier and cooling medium. Around the world, Lewatit® ion exchange resins help to ensure the efficient, safe, and reliable operation of these power plants over many years. For example, they are essential for demineralizing the cooling and makeup water and for condensate polishing in the watersteam circuits. They are the only means of preventing scale formation, thus pro moting optimal heat transfer on an ongoing basis. In addition, they can effectively reduce or even prevent corrosion in this way. These effects, together with the high regenerability of the resins, ensure longterm, economical power plant operation.
In nuclear power plants, ion exchangers are also important components in the chemical and volume control system (CVCS) that controls and monitors water volumes and dissolved constituents in the cooling circuits. With the aid of selective ion exchangers, both radioactive and nonradioactive ions can be removed from the process water and the waste water flow. The water in the holding basins for spent fuel ele ments is also passed through ion exchangers for treatment.
For all of these and other applications, we offer a compre hensive range of ion exchangers that are tailored to specific requirements. Our LewaPlus® design software can model various combinations of ion exchange resins and exchange stages on a madetomeasure basis and analyze their properties. This provides the user with maximum confidence that they will obtain the optimum treatment solution for the relevant feed water and the required process water quality for the given situation.
Weak Acidic Cation Exchange Resins
| Product | Product Matrix | Ionic Form | Bead Size (mm): Monodisperse: (MD, mean value) Heterodisperse: (HD, share > 90%) | Total Capacity (eq/l) min. | Volume Change (%) max. | Water Retention (%) | Applications |
|---|---|---|---|---|---|---|---|
| Lewatit® CNP 80 | Polyacrylate porous | H+ | HD: 0.315–1.6 | 4.3 | 70 (H+→Na+) | 41–47 | Water treatment, decarbonization, softening of high TDS water |
| Lewatit® CNP 80 WS | Polyacrylate porous | H+ | HD: 0.4–1.6 | 4.5 | 70 (H+→Na+) | 42–47 | Water treatment, decarbonization, softening of high TDS water |
Strong Acidic Cation Exchange Resins
| Product | Product Matrix | Ionic Form | Bead Size (mm): Monodisperse: (MD, mean value) Heterodisperse: (HD, share > 90%) | Total Capacity (eq/l) min. | Volume Change (%) max. | Water Retention (%) | Applications |
|---|---|---|---|---|---|---|---|
| Lewatit® C 249 | Styrene/DVB gel | Na+ | HD: 0.4–1.25 | 2.0 | 10 (Na+ → H+) | 45–48 | Water treatment, demineralization |
| Lewatit® C 267 | Styrene/DVB gel | H+ | HD: 0.3–1.25 | 1.9 | –10 (H+ → Na+) | 49–55 | Demineralization |
| Lewatit® MonoPlus S 108 | Styrene/DVB gel | Na+ | MD: 0.62 (+/– 0.05) | 2.2 | 10 (Na+→H+) | 41–46 | Demineralization |
| Lewatit® MonoPlus S 108 H | Styrene/DVB gel | H+ | MD: 0.65 (+/– 0.05) | 2.0 | –10 (H+ → Na+) | 47–53 | Demineralization |
| Lewatit® MonoPlus S 108 KR | Styrene/DVB gel | H+ | MD: 0.65 (+/– 0.05) | 2.0 | –10 (H+ → Na+) | 47–53 | Nucleargrade cation exchanger for decontamination |
| Lewatit® MonoPlus SP 112 | Styrene/DVB macroporous | Na+ | MD: 0.65 (+/– 0.05) | 1.7 | 8 (Na+→ H+) | 51–56 | Demineralization |
| Lewatit® MonoPlus SP 112 H | Styrene/DVB macroporous | H+ | MD: 0.67 (+/– 0.05) | 1.6 | –8 (H+ → Na+) | 56–60 | Demineralization |
| Lewatit® MonoPlus SP 112 KR | Styrene/DVB macroporous | H+ | MD: 0.67 (+/– 0.05) | 1.7 | –8 (H+ → Na+) | 52–61 | Nucleargrade cation exchanger for decontamination |
| Lewatit® MDS 200 H | Styrene/DVB gel | H+ | MD: 0.33 (+/– 0.03) | 2.3 | –8 (H+ → Na+) | 45–50 | Higher cross-linked cation with a small bead diameter |
| Lewatit® MonoPlus S 200 H | Styrene/DVB gel | H+ | MD: 0.60 (+/– 0.05) | 2.1 | –8 (H+ → Na+) | 45–50 | Higher cross-linked cation for condensate polishing |
| Lewatit® MonoPlus S 200 KR | Styrene/DVB gel | H+ | MD: 0.60 (+/– 0.05) | 2.1 | –8 (H+ → Na+) | 45–50 | Nucleargrade cation for condensate polishing and decontamination |
| Lewatit® MonoPlus S 215 KR | Styrene/DVB gel | H+ | MD: 0.60 (+/– 0.05) | 2.4 | –6 (H+ → Na+) | 35–45 | Nucleargrade high crosslinked cation for condensate polishing and decontamination |
| Lewatit® S 100 G1 | Styrene/DVB gel | H+ | HD: 0.315–1.25 | 1.8 | –8 (H+ → Na+) | 50–55 | Acid conductivity |
Weak Base Anion Exchange Resins
| Product | Product Matrix | Ionic Form | Bead Size (mm): Monodisperse: (MD, mean value) Heterodisperse: (HD, share > 90%) | Total Capacity (eq/l) min. | Volume Change (%) max. | Water Retention (%) | Applications |
|---|---|---|---|---|---|---|---|
| Lewatit® A 8072 | Polyacrylate gel | FB | HD: 0.50–0.75 (effective) | 1.6 | 25 (FB → Cl) | 53–61 | Water treatment, demineralization |
| Lewatit® A 8072+ | Polyacrylate gel | FB | HD: 0.50–0.74 (effective) | 1.4 | 12 (FB → Cl) | 56–64 | Water treatment, demineralization, reduced rinse water demand |
| Lewatit® MP 62 | Styrene/DVB macroporous | FB | HD: 0.47 (+/– 0.06, effective) | 1.7 | 45 (FB → Cl) | 50–55 | Water treatment, demineralization |
Medium Base Anion Exchange Resins
| Product | Product Matrix | Ionic Form | Bead Size (mm): Monodisperse: (MD, mean value) Heterodisperse: (HD, share > 90%) | Total Capacity (eq/l) min. | Volume Change (%) max. | Water Retention (%) | Applications |
|---|---|---|---|---|---|---|---|
| Lewatit® A 8073 | Polyacrylate gel | FB/Cl | HD: 0.50–0.75 (effective size ) | 1.25 | 14 (del. form → Cl) | 56–64 | Water treatment, demineralization |
| Lewatit® MonoPlus MP 64 | Styrene/DVB macroporous | FB/Cl | MD: 0.59 (+/– 0.05) | 1.3 | 24 (del. form → Cl) | 61–66 | Water treatment, demineralization |
| Lewatit® MonoPlus MP 68 | Styrene/DVB macroporous | FB/Cl | MD: 0.55 (+/– 0.05) | 1.3 | 24 (del. form → Cl) | 54–60 | Water treatment, demineralization |
Strong Base Anion Exchange Resins – Type I
| Product | Product Matrix | Ionic Form | Bead Size (mm): Monodisperse: (MD, mean value) Heterodisperse: (HD, share > 90%) | Total Capacity (eq/l) min. | Volume Change (%) max. | Water Retention (%) | Applications |
|---|---|---|---|---|---|---|---|
| Lewatit® A 8071 | Polyacrylate gel | Cl | HD: 0.50–0.75 (effective size ) | 1.35 | 25 (OH → Cl) | 48–55 | Demineralization, adsorption of TOC |
| Lewatit® ASB 1 | Styrene/DVB gel | Cl | HD: 0.3–1.25 | 1.4 | 20 (OH → Cl) | 43–48 | Demineralization |
| Lewatit® ASB 1 P | Styrene/DVB gel | Cl | HD: 0.44–0.56 (effective size) | 1.3 | 20 (OH → Cl) | 49–56 | Demineralization |
| Lewatit® MonoPlus M 500 | Styrene/DVB gel | Cl | MD: 0.62 (+/– 0.05) | 1.3 | 24 (OH → Cl) | 48–55 | Demineralization |
| Lewatit® MonoPlus M 500 MB | Styrene/DVB gel | Cl | MD: 0.62 (+/– 0.05) | 1.3 | 24 (OH → Cl) | 48–55 | Demineralization, for mixed bed application |
| Lewatit® MonoPlus M 500 OH | Styrene/DVB gel | OH | MD: 0.64 (+/– 0.05) | 1.1 | –24 (OH → Cl) | 57–62 | Demineralization and mixed bed application |
| Lewatit® MonoPlus M 500 KR | Styrene/DVB gel | OH | MD: 0.64 (+/– 0.05) | 1.1 | –22 (OH → Cl) | 56–62 | For rad waste removal, demineraliza tion, and decontamination |
| Lewatit® MonoPlus M 800 | Styrene/DVB gel | Cl | MD: 0.60 (+/– 0.05) | 1.4 | 22 (OH → Cl) | 43–48 | Demineralization, for mixed bed applications |
| Lewatit® MonoPlus M 800 OH | Styrene/DVB gel | OH | MD: 0.64 (+/– 0.05) | 1.2 | –22 (OH → Cl) | 57–62 | Demineralization |
| Lewatit® MonoPlus M 800 KR | Styrene/DVB gel | OH | MD: 0.64 (+/– 0.05) | 1.2 | –22 (OH → Cl) | 56–63 | Low chloride content, for rad waste removal, demineralization, and decontamination |
| Lewatit® MonoPlus M 800 KRI | Styrene/DVB gel | OH | MD: 0.64 (+/– 0.05) | 1.2 | –22 (OH → Cl) | 56–63 | Ultralow chloride and sulfate content, for rad waste removal, demineraliza tion, and decontamination |
| Lewatit® MonoPlus MP 500 | Styrene/DVB macroporous | Cl | MD: 0.62 (+/– 0.05) | 1.1 | 22 (OH → Cl) | 60–65 | Demineralization, adsorption of TOC |
| Lewatit® MonoPlus MP 500 OH | Styrene/DVB macroporous | OH | MD: 0.65 (+/– 0.05 | 0.9 | –22 (OH → Cl) | 70–77 | Demineralization, adsorption of TOC |
| Lewatit® MonoPlus MP 800 | Styrene/DVB macroporous | Cl | MD: 0.62 (+/– 0.05) | 1.0 | 22 (OH → Cl) | 63–68 | Demineralization, adsorption of TOC |
| Lewatit® MonoPlus MP 800 OH | Styrene/DVB macroporous | OH | MD: 0.65 (+/– 0.05) | 0.8 | –22 (OH → Cl) | 70–76 | Water treatment, demineralization, adsorption of TOC |
| Lewatit® MonoPlus MP 800 KR | Styrene/DVB macroporous | OH | MD: 0.65 (+/– 0.05) | 0.8 | –22 (OH → Cl) | 60–68 | Water treatment, demineralization, adsorption of TOC |
Strong Base Anion Exchange Resins – Type II
| Product | Product Matrix | Ionic Form | Bead Size (mm): Monodisperse: (MD, mean value) Heterodisperse: (HD, share > 90%) | Total Capacity (eq/l) min. | Volume Change (%) max. | Water Retention (%) | Applications |
|---|---|---|---|---|---|---|---|
| Lewatit® MonoPlus M 600 | Styrene/DVB gel | Cl | MD: 0.62 (+/– 0.05) | 1.3 | 16 (OH → Cl) | 45–50 | Demineralization |
| Lewatit® MonoPlus MP 600 | Styrene/DVB macroporous | Cl | MD: 0.60 (+/– 0.05) | 1.1 | 12 (OH → Cl) | 55–60 | Demineralization, adsorption of TOC |
| Lewatit® ASB 2 | Styrene/DVB gel | Cl | HD: 0.3–1.25 | 1.4 | 20 (OH → Cl) | 38–45 | Demineralization, for waters with low silica concentrations |
Mixed Bed: Strong Acidic Cation Exchange Resins / Strong Base Anion Exchange Resins
| Product | Product Matrix | Ionic Form | Bead Size (mm): Monodisperse: (MD, mean value) Heterodisperse: (HD, share > 90%) | Total Capacity (eq/l) min. | Volume Change (%) max. | Water Retention (%) | Applications |
|---|---|---|---|---|---|---|---|
| Lewatit® NM 60 | Styrene/DVB gel | H+/OH | HD: 0.40–0.65 (effective size) | 0.55** | –15 (H+/OH → Ca2+, Mg2+, SO 2, Cl) 4 | 50–60 | Production of very pure water |
| Lewatit® NM 91 | Styrene/DVB gel | H+/OH | HD: 0.315–1.25 | 0.30** | –15 (H+/OH- → Ca2+, Mg2+, SO42, Cl) | 50– 60 | Demineralizing water in cartridges, cleaning of sewage water, electro erosion |
| Lewatit® SM 600 KR Cl-free | Styrene/DVB gel | H+/OH | MD: 0.65 +/– 0.05 A 0.64 +/– 0.05 C | 2.0 C/1.1 A | –15 (H+/OH → Ca2+, Mg2+, SO 2, Cl) 4 | 47–62 | Demineralization, decontamination, and elimination of rad waste |
| Lewatit® MonoPlus SM 1000 KR | Styrene/DVB gel | H+/OH | MD: 0.64 +/– 0.05 A 0.60 +/– 0.05 C | 2.1 C/1.2 A | –14 (H+/OH → Ca2+, Mg2+, SO 2, Cl) 4 | 42–63 | Demineralization, decontamination, and elimination of rad waste |
| Lewatit® MonoPlus SM 1015 KR | Styrene/DVB gel | H+/OH | MD: 0.65 +/– 0.05 A 0.60 +/– 0.05 C | 2.4 C/1.2 A | –14 (H+/OH → Ca2+, Mg2+, SO 2, Cl) 4 | 54–59 | Demineralization, decontamination, and elimination of rad waste |
| Lewatit® MonoPlus SMP 1000 KR | Styrene/DVB macroporous | H+/OH | MD: 0.70 +/– 0.05 C 0.65 +/– 0.05 A | 1.7 C/0.8 A | –14 (H+/OH → Ca2+, Mg2+, SO 2, Cl) 4 | 52–68 | Demineralization, decontamination, and elimination of rad waste |
| Lewatit® MonoPlus SM 1000 KR 7Li | Styrene/DVB gel | Li7+/OH | MD: 0.64 +/– 0.05 A 0.60 +/– 0.05 C | 2.1 C/1.2 A | –14 (H+/OH → Ca2+, Mg2+, SO 2, Cl) 4 | 45–63 | CVCS applications |
| Lewatit® MonoPlus SM 1015 KR 7Li | Styrene/DVB gel | Li7+/OH | MD: 0.64 +/– 0.05 A 0.60 +/– 0.05 C | 2.4 C/1.2 A | –14 (H+/OH → Ca2+, Mg2+, SO 2, Cl) 4 | 54–59 | CVCS applications |
Check out full information in Brochure Lewatit Product Guide 2025
