What impact does an excessively high sodium ion content in the drum have on the plant’s production?

An excessively high sodium ion content in the drum can have a negative impact on the plant’s production. It is mainly manifested in the following aspects: 1. It causes increased corrosion and wear of the equipment. High concentrations of sodium ions react with metals, leading to increased corrosion and wear on the equipment’s surface, thus shortening its service life. 2. Affects the thermal conductivity of the device. High concentrations of sodium ions increase the thermal resistance of the medium, reducing the heat conduction efficiency of the device and leading to a decrease in its operational efficiency. 3. Causes blockages and failures in the equipment. Sodium ions accumulate inside the equipment to form particles or crystals, causing pipe blockages and equipment failures, which in turn affect normal fluid flow and heat transfer. The handling method is as follows: 1. Regularly test and monitor the sodium ion content. The content of sodium ions can be detected through chemical analysis methods or by using equipment such as ion chromatographs, allowing for the timely identification of any issues. 2. Adjust the water quality. Based on the test results, adjust the water quality according to the actual conditions in order to reduce the sodium ion content. Treatment methods such as softening and reverse osmosis can be employed. 3. Regularly clean and maintain the equipment. For equipment that has already been contaminated by sodium ions, regular cleaning and maintenance are required to remove the sodium ion particles and crystals adhering to its surface. It can be cleaned using a dedicated cleaning agent. 4. Strengthen equipment protection and maintenance. Equipment should be manufactured from corrosion-resistant materials, anti-corrosion measures should be strengthened, and regular inspections and maintenance should be carried out to extend the equipment’s service life. In summary, timely monitoring and adjustment of water quality, along with regular equipment maintenance, are key to effectively addressing the issue of high sodium ion levels in the steam drum. .

Ensure proper control of desalinated water parameters, as well as sodium tripolyphosphate levels

This post was last edited by qugd on 2023-8-19 at 20:49. A high sodium ion concentration in the drum is usually caused by an excessive amount of soda or sodium phosphate being added. If the quality of the steam produced by the boiler is satisfactory, it will not have any adverse effects on the equipment that uses this steam, especially those used for insulation and heating; there is no need to worry. However, if the steam is used in thermoelectric power plants, its quality must be closely monitored. An excess of sodium ions indicates the presence of other anions in the steam; that is, acid radicals such as silicate and phosphate ions may be present. These anions, together with sodium ions and smaller amounts of divalent cations, form scale on the turbine blades, increasing the load on the turbine rotor. In severe cases, the accumulation of this scale can cause wear on the blades, leading to accidents. This is why chemical supervision of the quality of steam and water in thermoelectric units is necessary. It is necessary to strictly control the sodium ion concentration in the boiler feedwater, while also closely monitoring the sodium ion concentrations in the boiler water and steam. Additionally, it is essential to strictly regulate the amount of alkali added to the boiler as well as the amount of sodium phosphate used as a descaling agent. Appropriate regular and continuous drainage are also required to ensure that the quality of the steam meets the specified standards. Those who immediately talk about corrosion are complete amateurs; they also leave around empty statements.

Salt deposition: Severe scaling on the turbine blades leads to a decrease in efficiency, forcing the turbine to be shut down for repairs later on

We recently experienced scaling on the turbine blades, but the steam quality analysis was satisfactory. What is the reason for this?