Manufacturer of special defoamer for cold water tower. [Xingmiao chemical industry] let you know about chemical industry: in UF and RO systems, microbial slime will be blocked, which will affect the normal water production of the membrane. Solution: add UV sterilizer or add bactericide. For RO membrane system, non phosphorus scale inhibitor is selected to slow down microbial growth. Clean and maintain the system regularly. The design of pretreatment capacity is too low or the effect is poor, which leads to the deterioration of membrane water quality and has a great influence on membrane system, especially RO system. The solution is to improve the pre-treatment to ensure the quality of the membrane system water. For UF system, improve its prefilter effect. For RO system, ensure SDI is qualified.
-When storing corrosion and scale inhibitors, we need to determine the specific conditions of the products, especially the specific use time, which is also based on this. Any product needs to use the shelf life, and we can pay attention to these aspects. Let's see when the specific shelf life of the product we use is? Then it's really practical within this time, so as to get better use effect and avoid the problem of overdue. In the process of storing corrosion and scale inhibitors, we should keep the room cool. When the temperature is relatively high, volatilization may occur, or the nature of the product is easy to change, so as to ensure the indoor cool and ventilation, and not to be eroded by the external rainwater. These are all basic requirements. We can notice that more guarantee will be obtained in the use process, and everyone should pay attention to specific things.
1. It is suitable for various types of air conditioning units, which can clean the circulating water system and low temperature water system of the condenser, evaporator and absorber of the central air conditioning unit, hot water boiler and diesel generator unit water-cooling jacket and other equipment; 2. Applicable materials: copper, copper nickel alloy, carbon steel, aluminum, titanium and stainless steel and other materials. Usage: 1. Chemical cleaning process: water washing → acid pickling and descaling → water washing → passivation; 2. Disconnect other systems unrelated to the cooling coil, and connect the cleaning tank, cleaning pump and cooling coil into a closed cleaning circuit; 3. Check the leakage of the cleaning system in the simulated cleaning state, and remove the loose dirt in the coil at the outlet When there is no large particle impurity in the water through visual inspection, the water flushing is finished; 4. Add "central air conditioner cleaning agent" circularly in the cleaning tank, control the concentration of the main cleaning agent to be 3-6, and the temperature to be 50-60 ℃, and clean the system circularly for about 2-3 hours. Regularly measure the pH value of the acid solution with the pH test paper (once / 20 minutes) to keep it below 1. When the pH value tends to be stable within half an hour and there is no gas discharged from the cleaning system, the acid washing process will be finished. 5. After the cleaning process is completed, carry out water washing to wash the residual sludge and residue. When there are few impurities at the outlet, and the pH value is greater than 6, the water washing will be finished. 6. Water washing is combined After the grid, the "passivation pre film agent" is added to passivate the copper pipe to improve the corrosion resistance. Stop circulation and soak for 2-3 hours after the solution concentration of the whole system is evenly mixed. Discharge the passivation liquid out of the system and the cleaning process is over
The use of scale inhibitor can improve the water yield and quality, reduce the operation cost of the equipment, but the premise should be reasonable choice of use, if the selection of incorrect products or improper use, it will also affect the effect. So how to add a reasonable scale inhibitor? The following small series to introduce to you. 1. Dosing point: in order to achieve good effect, scale inhibitor shall be added before static mixing, and the actual output of dosing metering pump shall be calibrated before adding. During dosing, attention shall be paid to adding continuously and directly proportional to the influent flow to maintain the dosing dose level.
Outstanding features: the boiler descaling powder has a series of organic acid cleaning agents composed of descaling agent, corrosion inhibitor, accelerator, masking agent, mist inhibitor, surfactant and other substances. The practice shows that the technology has high efficiency of descaling, fast cleaning speed, small corrosion to metal matrix, and passivation effect on metal in the cleaning process, so there is no over washing phenomenon, and the passivation film is compact and complete after cleaning. This product does not contain toxic and harmful substances, so it is safe to use, pollution-free waste liquid, safe and environmental protection, and easy to use. The popularization and application of boiler descaling powder provides guarantee for safe and efficient operation of boiler.