How Wash Heat Exchanger In Order To Avoid A ＂Bad＂?
Scale for heat exchanger cleaning problems, most enterprises still stays in the use of machinery, high pressure water, traditional "destructive", such as chemical pickling process; Even simply said heat exchanger cleaning only in the case of the serious influence production, but the formation of scale continue to affect the energy consumption of the enterprise, devouring the profits of the enterprise. In addition, there are companies in order to reduce the cost of cleaning, even choose the cleaning method of heat exchanger with damage and corrosion, the stagnation of scrap and production effect of the heat exchanger.
So, how to clean the heat exchanger science?
First selects the high quality of cleaning products, good and evil people mixed up cleaning agents on the market at present and the average consumer is difficult to discern the stand or fall of the product before use, the user due to choose the low quality of detergent cleaning process in the heat exchanger corrosion damage and even cause safety accident case is also a lot of, so choose a no corrosive cleaning agent is very important. In addition to the choice of cleaning products, reasonable cleaning step to clean the heat exchanger is also essential.
Circulation cleaning
Circulation cleaning is the use of the pump power make cleaner for circular motion. Clean the heat exchanger is mainly composed of circulating pump, cleaning tank, flow control valve and connecting pipe cleaning. Cleaning steps:
1. The system, ensure no leakage phenomenon for heat exchanger.
2. Tools preparation: plastic connecting line, cleaning pump, cleaning barrel, connecting line, consistent with the pipe valves, etc. For carbonate content in more than 70% of the scale and quality, and the need to vent valve is at the top of the washing line, remove our fleet gas produced at any time.
3. Prepare to clean: record the temperature, pressure, power consumption of heat exchanger cleaning before. Remove the heat exchanger in the original line, hang put clean water and media. Valve and pipeline cleaning, pipeline connection has prepared prepare for cleaning.
4. Circulation cleaning: first add concentrate circulating 5 minutes, will seriously dirty soft, and adding suitable amount of water circulation. Every 30 minutes to measure a PH value, and make records. Cycle 1 hour closed after backwater, inlet valve and soak for 30 minutes. Then open the cleaning circulation pump. And constantly testing PH value, rate is higher than 3, you should add a certain amount of detergent; If two consecutive PH around 2, that has been cleaned. At this time to stop circulation, remove a line cleaning effect.
5. Reverse wash: in order to prevent large scale mass, stripped after blocking port or pipeline, the pipeline connection, to carry on the back flush, again measured PH value, if the PH is controlled in 2, two proof has been cleaned.
6. Rinse, installation, heat exchanger, rinse off with clear water to remove line, connecting the heat exchanger pipe, to ensure complete connection. Then switched on. Record the temperature of the heat exchanger after cleaning, pressure and power consumption value, compared with previous do.
Soak cleaning
Soaking technology mainly using cleaner unique wetting agent, penetrating agent, will adhere to the body scale layer on the surface of the stripping, decomposition. Soaking method is simple, as long as there is a certain volume of soaking container. For heat transfer between the port congestion, scale and quality thicker after years of not clean heat exchanger suggest remove soak cleaning.