Nancrede Engineering’s high purity industrial water deionizers are ‘two bed’ DI units with an acid regenerated cation vessel piped in series with a ‘alkaline regenerated’ anion vessel.
Mixed bed industrial deionizers are also available. Then, the cation resin in an industrial DI system is a strong acid type and is regenerated with hydrochloric acid. The anion resin in an industrial water DI system is a strong base type I and is regenerated with sodium hydroxide. Seriously. The pre engineered industrial deionizers units are designed to provide eight on hours line duty when operated at normal service flow rates. The quality of the demineralized water is normally within a 1025 microohm range when influent water qualities are 15 grains per gallon total exchangeable anions or less. As a result, operating conditions and an actual influent water analysis are required for predicting more exact capacity, leakage level, and service flow duration.
These industrial deionizers are complete skid mounted units and complete an excellent ‘highpurity’ water system. They require single point utility hookups for economical installation and startup. Actually, their simple design maximizes the efficiency and repeatability of the unit in the course of the regenerant chemical introduction modes to provide a truly reliable water treatment unit. Now pay attention please. NOTE. Usually, where removal of silica and carbon dioxide are not required, a weak base two bed demineralizer can be considered. On top of that, strong base anion resin type industrial waterDIunits are used in the preparation of waters for boiler ‘make up’, process work, or where TDS reduction is required. These units work most efficiently where the TDS amount of the water to be treated is less than 600 ppm. Nancrede Engineering’s’s SBTB units employ cation followed by anion resins in separate beds. Now let me tell you something. They produce ddemineralized water with total mineral contents below 0 ppm. However, actual effluent qualities vary on the basis of chemical dosages utilized and actual influent water qualities.
Nancrede Engineering’s industrial deionizers / demineralizers remove virtually all ions from water including silica and carbon dioxide. The more complete mineral reduction of the SBTB industrial deionizers / demineralizersmake them ideally suited to treating water for high pressure boiler use. The low tolerances of these boilers to mineral ‘build up’ makes the strong base demineralizer a must for low blowdown waste and savings of both fuel and internal chemical treatment. The low silica content produced by strong base demineralizers is especially important where steam is used to drive turbines. Therefore, manufacturing processes that add water directly to a finished product, or washing and rinse operations where spot free drying is important, so use strong base demineralizers. Additional applications for industrial deionizers / demineralizersinclude metal plating, closed loop cooling water, and clean air humidification, among others.
Industrial Deionizer Systems Application. >
Influent waters with total mineral contents above 600 ppm usually require reverse osmosis or similar type mineral reduction equipment ahead of the strong base demineralizer. The degasification will reduce operating costs and initial equipment costs as the anion load is proportionately reduced. For the sake of example, a polishing mixed bed demineralizer might be installed following a strong base demineralizer, when ultrapure quality water is required for very high pressure boilers or electronic parts washing. Actually, local codes may require waste neutralization of industrial deionizer / demineralizerregenerant effluent.
Nancrede Engineering’s SBTB series strong base anion two bed demineralizers are designed and manufactured for industrial applications.
They are rugged, ‘preengineered’, ‘preassembled’ catalog units that minimize expensive installation and startup costs. They require simple utility hookups, resin loading, and initial regeneration for immediate online service. There’s some more info about this stuff here. The strong base industrial deionizer is a two vessel system. So, water first passes through a strong acid cation exchange vessel, where the ionizable salts in the water are converted to their respective acids. The water thence passes through the strong base anion exchange vessel, where the negative radicals of the acids are converted to hydroxyl ions. The result is a water containing only hydrogen and hydroxyl ions which combine to form pure water.
The strong acid cation vessel contains resin similar to the strong acid resin used in a water softener. It’s regenerated with an acid to convert the resin to the hydrogen form, where it can readily remove cations like calcium, magnesium from the water. Where it can readily remove anions just like chloride, sulfate from the water Either sulfuric acid to convert the resin to the hydroxyl form,, or hydrochloric acid. The strong base resin is also capable of removing the more weakly ionizable substances like carbon dioxide. Capacities range from 10000 to 20000 grains per cubic foot, determined by the anions type present, the quality of water desired and the quantity of caustic regenerant used. Raw water alkalinity is converted to carbon dioxide in the strong acid cation vessel. Accordingly the load on the strong base anion resin can be significantly reduced and operating efficiency increased by installing a degasifier prior to the strong base vessel, when the alkalinity to total anion ratio is excessive. Industrial Deionizer Systems Standard Features. >Industrial Deionizer Systems Application. Deionization System Process Theory. >Industrial Deionizer Systems Standard Features. Deionization System Process Theory. Related Industrial Water Products. Related Industrial Water Products. >