Plate heat exchanger cleaning

Source: 　 Time: 2020-04-01 15:41:19　Hit:

Seeing this, isn’t it strange that the machine still needs a bath? My answer is of course that people need to take a bath often, and of course they need equipment. Proper cleaning and maintenance during the use of the equipment will also extend the use time.

Gasket plate heat exchanger

YOJO heat exchanger equipment has the characteristics of light weight, small footprint, low investment and high heat exchange efficiency. However, due to its small flow cross-section, it is easy to cause clogging after scale generation, resulting in a reduction in heat exchange efficiency. Therefore, let us look at the specific steps for cleaning scale.

1. Flushing: Before pickling, first flush the plate heat exchanger so that there are no impurities inside the heat exchanger. There are two kinds of flushing methods: the first is countercurrent flushing, which is generally used during exercise or when stopping for a short time, without disassembling the device. This method is more effective when the scaling is not serious. The second is a high-pressure water gun flushing method. Different rotary water nozzles are used for different plate heat exchangers, and the pressure can be adjusted freely. The use of high-pressure water to remove dirt is applicable to the tube, the tube and the shell. High-pressure water gun flushing effect is better.
2. pour the cleaning solution into the cleaning equipment, and then pour it into the heat exchanger.
3. Pickling: statically soak the heat exchanger filled with acid solution, and then continuously and dynamically circulate. Alternately, the cleaning is performed in the positive and negative directions at intervals. After pickling, if the pH value of the acid solution is greater than 2, the acid solution can be reused. Otherwise, the acid solution should be diluted and neutralized and then discharged. The carbonate scale was pickled.
4. Alkali washing: After the acid washing is finished, prepare with sodium hydroxide, sodium, sodium hydroxide, demineralized water according to proportions, and use a dynamic circulation method to perform alkali washing on the heat exchanger to achieve acid-base neutralization and make the plate heat exchanger Plates no longer corrode. Sulfate and silicate scale can also be washed with alkali.

5. Water washing: After alkaline washing, use clean and softened water. Repeat the flushing to thoroughly flush out the residue in the heat exchanger.

The purpose of cleaning the plate heat exchanger is to remove scale and other dirt, keep it open, and improve the heat exchange efficiency. When scale occurs, it must be removed in time to prevent the scale from affecting the equipment and to maintain the effective operation of the equipment. YOJO is committed to heat exchanger equipment for many years and has rich manufacturing experience. If you need information about YOJO gasket plate heat exchangers and heat exchanger parts and functions, we will be happy to inform you.

Tags: heat exchanger, YOJO gasket plate heat exchanger, heat exchanger parts and functions

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