In many areas around the world, where water resources are scarce or require reuse, it's advocated that technology be used to treat industrial process water. For example, in the arid regions of China, the National Development and Reform Commission (NDRC) advocates all newly built coal-fired power plants adopt "pollution" control technology. As a result, use of powdered-resin condensate polishing systems has become widely prevalent in recovery and recycling of the return condensate stream on the steam condensate loop in industrial power generation systems. Careful purification of this stream to remove contaminants greatly reduces operating costs and can prevent damage to the system that's typically manifested via corrosion or steam leaks.
Features of powdered-resin filtration systems include:
large operating capacity;
effective removal of organic matter and colloid silicate;
effective removal of corrosion products from the thermodynamic system;
ferric oxide removal rates of 95% or higher.
These systems utilize powdered resins capable of achieving high regeneration rates. They're typically precoated onto the surface of fiber filter elements and also have the ability to act as both ultrafiltration and ion exchange systems.
Advantages powdered-resin condensate polishing filtration systems have over high-speed, mixed-bed filtration systems, for example, include:
minimal space requirement;
reduced capital investment;
reduced operating cost;
and simple system operation for ease of use and maintenance.
Condensate polishing normally applies to the treatment of condensed steam from turbines operating in the power industry. It can also be applied to condensed steam from any steam system being returned to the boiler. The ultimate goal of condensate polishing is to remove all soluble impurites and protect the high pressure boilers.
These contaminents can come from many sources:
1. Cooling water from condenser in-leakage and this can be a particularly severe problem where seawater cooling is employed.
2. Make-up water, this can arise from maloperation such that regeneration chemicals enter the system, plant over-run during the service cycle or complete removal of certain substances such as organic matter may not occur.
3. The conditioning chemicals used to protect the circuit e.g. ammonia, morpholine and hydrazine can be regarded as sources of contamination if they are to be removed by the condensate purification plant.
4. Insoluble impurities will usually be the corrosion products from the materials in the system with copper and iron are the predominant species.
The adsorption and separation technology that Sunresin is engaged in is a highly efficient separation and purification platform technology with strong environmental friendliness, high automation, and good operational accuracy. As a leading global company in the adsorption and separation technology industry, we have been actively considering how to integrate our more than 20 years of research and development accumulation and technological advantages in the field of adsorption and separation with the national carbon neutrality path to contribute to the achievement of the dual-carbon goals and help optimize and upgrade downstream application processes.
Sunresin has developed Uniform Particle Ion Exchange Resin using targeted research and development, advanced chromatographic equipment, and strict quality control, utilizing new synthetic biology technology. This resin is designed to address the impurities and high salt content of existing fermentation processes used to produce ergothioneine. It is used for chromatographic desalination, decolorization, and purification, achieving an inorganic/organic salt removal rate of over 95% in high salt systems, reducing conductivity to below 50μs/cm. Moreover, the uniform particle characteristic of the resin allows for lower pressure drop in the resin bed, larger online liquid processing capacity, lower resin breakage rate, and better impurity and salt removal compared to conventional resins. This results in higher yields and significantly improved production efficiency, while reducing production costs.
To meet the high requirements of enterprises for fluoride content in wastewater and residents' demand for fluoride-free drinking water, Sunresin's research team has continuously researched, developed, and improved targeted adsorption fluoride removal resins LSC-760 and LSC-860 based on the typical industry wastewater quality and treatment process characteristics.