Hi-Tower Regeneration Technology
The condensate polishing system is placed between condensate pumps and low pressure feed water heaters. Hydrogen (H-OH) type deep bed polishers with high speeds are applied widely in the system. Typically, the flow rate of the polisher is 100 meters per hour.
The hi-tower separation method is employed in the external regeneration system when the amount of cross-contamination (i.e., cation resin exposed to caustic and anion resin exposed to acid during regeneration phase) must be kept to minimum. This improves the quality of treated condensate. With the high vessel separation system, the cross-contamination percentage can be minimized, it produces very low ion leakage from the resin and high quality polished condensate.
Hi-tower Regeneration System combines the resin separation tower (SPT), the cation resin regeneration, the storage tower (CRT), the anion resin regeneration tower (ART) and the other auxiliary equipment such as flush pump, roots blower, acid (alkali) storage and dosing equipment etc.
Deep Bed Condensate Polishing System
The patented hi-tower separation technology has the following features:
Unique structure of the collector at the bottom of the mixed bed ensures resin transfer rate of more than 99.99%.
Unique design of the regeneration device avoids flow concentration and ensures stable resin interface.
Resin interface detector ensures high resin separation rate meaning the rate of anion resin contained in cation resin is less than 0.1% and the rate of cation resin contained in anion resin is less than 0.07%.
High separation rate ensures long hydrogen cycle and ammonia cycle runs. Thus in order to protect the mixed bed and its resins, the pre-filters are available based on the requirements of the main equipment specifications. SafBon can also provide pleated filter elements and filter strainers.
Deep Bed Condensate Polishing System
Powder Coated Technology
Chinese National Development and Reform Commission (NDRC) advocates that the newly built power plants adopt air cooling units in the northern areas of China where water resources are deficient. To adhere to this policy, SafBon carried out intensive research and development of the requirements for powder coated (powdered resin) condensate polisher.
The features of the powder coated filter includes: large operating capacity; effective removal of corrosion products from the thermodynamic system; and ferric oxide removal rates of 95% or higher.
Powder coated filter utilizes powdered resin with high regeneration rates, and this is coated on the filter element surface and can be used both for ultrafiltration (UF) and ion exchange.
We also can use this technology to treat oily condensate with powdered activated carbon demonstrating a variety of successful applications. SafBon provides: cation or anion powdered resin, fiber powder and proportionally mixed powdered resin matched with powder coated filter; special cartridge (stainless steel core and PP (polypropylene) wound yarn) with micro ratings of 5 μm, 10 μm or 20 μm.
Site View of Powder Coated Filter
At present, the main demineralized water treatment processes are ion exchange and separation membrane. The demineralized water treatment process design is normally based on different influent qualities and effluent quality requirements. A proposal based on specific characteristics of the raw water is the most cost-effective one. It ensures the treated water quality always reaches the effluent requirements.
Membrane technology is one of the most advanced and common water treatment technologies in the world for water purification. SafBon is highly experienced and skilled in applying ultrafiltration (UF), reverse osmosis (RO) and electrode ionization (EDI) technologies in water and wastewater treatment process, depending on the customer requirements and surrounding specifications.
UF Technical Advantages
The effluent quality is stable;
The Silting Density Index (SDI) reaches the requirements of RO inlet water;
The operation has low energy consumption and pressure;
It can remove colloidal silicon effectively;
The remove rate of bacteria and virus is more than 99%;
The floor space is less and the automation level is higher.
RO Technical Advantages
The key equipments, such as membrane, pressure vessel, and high-pressure pump are high quality products;
High recovery rate;
Stable water production;
Convenient and easy operation;
High automation level.
SafBon’s EDI technology plays a leading role in the China’s “Electrode Ionization Equipment for Pure-Water Preparation” national standard development process. A foreign module processing unit is introduced to prepare the electric deionized water, which is a demineralizing technology that combines ion exchange and an electro dialysis membrane to remove the ions in the water.
EDI Technical feature
The effluent quality is high and stable;
The demineralizing efficiency reaches 99%. The operation is convenient, safe, and with a high automation level;
No chemical agents are required to regenerate the resin;
The system is not limited by resin regeneration, and will not produce acid or alkali wastewater. It can be designed to be stackable with a smaller footprint.
Ion Exchange Technology
Ion exchange is a technology which selectively adsorbs or releases specific ions with the force difference between ion exchange and solution. It results in the removal of impurities, enrichment or purification of the target biochemical substances.
SafBon provides the ion exchange technology proposals for water treatment. For instant, the mixed-bed polisher system for boiler makeup treatment, the weak acid cation polisher system for coal chemical industrial circulating cooling water treatment.