Once-through boilers are essential equipment in many industrial manufacturing processes. They use water as a heat exchange medium to convert heat energy into energy and reduce energy waste. However, in addition to the design and technology of the boiler itself, water quality is also an important factor affecting boiler efficiency and life. So why exactly is water quality so important?
First, impurities in the water will affect the heat exchange effect. During the operation of a once-through boiler, water flows through the pipes and equipment inside the boiler. If the water contains too much calcium, magnesium, sulfur and other substances, these impurities will be deposited inside the boiler to form scale, forming thermal resistance barriers and reducing heat exchange. efficiency, thereby increasing energy consumption. What's more serious is that if the scale is not cleaned in time, it may cause boiler failure and risk of explosion.
Therefore, whether the water quality is good or not directly affects the operation effect and safety of the once-through boiler. Secondly, the pH and oxygen content in the water can also cause damage to the boiler. If the pH in the water is too high or too low, it will corrode the metal materials of the boiler, thereby affecting the operating efficiency and service life of the boiler. At the same time, if the oxygen content in the water is too high, it will also cause oxidation and corrosion of metal materials, thus affecting the life of the boiler. The damage may not be immediately apparent but will increase over time.
So, how to maintain good water quality? Generally speaking, water quality treatment methods include chemical treatment, physical treatment and biological treatment. Chemical treatment is one of the most widely used methods at present. By adding chelating agents, dispersants, corrosion inhibitors and other agents, it can prevent the generation of scale and corrosion. It can also inhibit microorganisms in the water to maintain the stability of water quality. Physical treatment methods include filtration, sedimentation, membrane separation, etc. Suspended solids, impurities, etc. in the water are removed through physical filtration, sedimentation and other methods to achieve the purpose of purifying water quality. The biological treatment method is mainly suitable for specific occasions such as industrial wastewater. The organic matter, nitrogen, phosphorus, etc. in the water are removed through biological treatment method to meet the discharge standards. I
n addition to the above methods, there are some measures that can further protect the cross-flow boiler. For example, regular inspection and cleaning of scale, mud and other impurities inside the boiler, timely replacement of broken pipes and equipment, strengthening water quality testing, and timely adjustment of water quality can all play a positive role in protecting the boiler.
In general, the operating efficiency and life of a once-through boiler are affected by many factors, among which water quality is a very important factor. Good water quality can ensure the stable operation of the boiler, reduce energy consumption, extend the service life, and at the same time improve production efficiency and production quality. Therefore, when using a once-through boiler, we need to pay attention to maintaining good water quality, regularly inspect and clean the boiler, strengthen water quality testing, and choose appropriate water quality treatment methods to ensure the safe operation and efficiency of the boiler.