Plate heat exchanger cleaning steps so that the cleaning is thorough

1, first of all, according to the heat exchanger heat transfer area and the thickness of the scale, calculated the need to prepare the F2 stainless steel / aluminum special type cleaner liquid quantity.

2, ready to clean the agent container, can meet the needs of the cycle can be, the inner surface of the container requires a clean layer without oxidation or the use of non-metallic containers.

3, according to the heat exchanger internal circulating pressure requirements, ready for circulation of industrial centrifugal pumps, ready for pumps and heat exchangers and containers connected to the pipeline, if necessary, to make a flange connection and connect the pipeline.

4, according to the thickness of the scale layer or cleaning time to determine whether the cleaning agent to dilute the original solution, the dilution ratio can be controlled according to the situation between 1:1 ~ 1:5.

5, in the container poured into a sufficient amount of cleaning agent to start the cycle of heat transfer equipment cleaning. The heat exchanger equipment does not need to be disassembled and can be cleaned online.

6, cyclic cleaning process due to the detergent and scale chemical reaction, in the solution tank can be found in the dissolved scale impurities and foam.

7, after a period of cleaning, use PH test paper to test the cleaning agent, test results such as higher than the PH value of 4 ~ 5 or so, you need to add the appropriate amount of cleaning agent solution to continue cleaning. And in due course, the inlet and outlet of the circulating pipeline to switch to reverse cycle cleaning.

8, the cleaning process should always be tested on the cleaning agent, to maintain the PH value of 3 within the effective range and a long time and then there is no change, indicating that the heat transfer equipment has been cleaned.

9, in the container into the water for cyclic flushing replacement, the residual equipment has been stripped of scale and other impurities rinse clean, rinse process also need to swap the inlet and outlet piping for repeated rinsing.