We all know that if the plate heat exchanger has been used for a long time, aging may occur. Do you know what causes it? If you are interested, let’s take a look~u3000u30001. The working method of the plate heat exchanger of the plate heat exchanger manufacturer; u3000u30002, the corrosiveness of the hot medium and the cleaning agent used; u3000u3000

3, the high working temperature of the plate heat exchanger manufacturer, Maximum working pressure; u3000u30004. The stress of the elastic gasket is greater due to excessive pressure and unbalanced pressure. The heat transfer methods of heat exchangers are also different. If you want to choose a heat exchanger that suits you, you need to understand their heat exchange methods. Today, plate heat exchanger manufacturers will introduce two basic heat transfer methods for heat exchangers. Let’s take a look~u3000

u30001. Heat transfer of heat exchanger, also called heat conduction. It is the process of heat transfer from a high-temperature object to a lower-temperature object in direct contact with it.u3000u30002. Convective heat transfer by heat exchangers. Convective heat transfer mainly depends on fluid for displacement, which is a phenomenon in which heat is carried from one place to another. Convection heat transfer in chemical production generally means that plate heat exchangers will inevitably have some minor problems during use. We have to find the reasons and deal with them. Today, the plate heat exchanger manufacturers will come to tell you how the cross leakage point is. OK, let's take a look~u3000u3000The steps to judge the leakage in the plate heat exchanger: the determination of the inteal leakage point, the repair of the inteal leakage and the pressure test after treatment. First, use a pressure water pump to fill the heat exchanger from a chael that has not been drilled, and then let the inteal pressure build up.

At this time, thermal transfer oil cooler will pass through the leaking part of the heat exchanger, and then flow to the drill. The chael of the hole, and then drip from the drill hole closest to the leakage point. The premise must remember that the hole of the heat exchanger should be placed downwards. Through this dripping position, you can find out that the inteal leakage is in the first Several layers, and then separate a section of the head on one side of the drill hole of the same layer of the heat exchanger as an observation hole. From this hole, the specific cross leakage position can be determined.u3000u3000 refers to the heat transfer between liquid and solid in direct contact.

Isolate the equipment refrigeration heat exchanger and discharge water from the heat exchanger. After cleaning the remaining sludge, algae and other impurities in the pipeline with high-pressure water, shut down the system. 2. Install a ball valve between the isolation valve and the heat exchanger. The inlet and retu ports should be installed. Coect the delivery pump and the coecting pipe so that the cleaning agent is pumped out from the bottom of the heat exchanger and flows out from the top.

Start pumping the required Fostek detergent into the condenser (the ratio can be adjusted according to specific conditions). 3. Repeat the cycle cleaning to the recommended cleaning time. As the cycle proceeds and the sediment dissolves, the gas generated during the reaction increases, and excess air should be discharged through the discharge valve at any time. When the air is exhausted, the space inside the heat exchanger will increase and appropriate water can be added. Do not inject large amounts of water from the begiing, this may cause water to overflow. 4.

The effectiveness of the cleaning agent should be regularly checked during the heat exchanger cycle and can be measured using pH test paper. If the pH of the solution is maintained at 2-3, the detergent is still effective. After the cleaning time is reached, the cleaning solution is recovered. Rinse the heat exchanger repeatedly with clean water until it is neutral, and use a pH test paper to measure the pH value 6 ~ 7. 5. The heat exchanger can be opened after cleaning.

You can also suppress the test to see if there are any leaks. If there is a leak, it can be repaired and protected with Mikawara polymer composite materials, which can greatly extend the service life of the equipment. After the heat exchanger is stable, record the current data such as media overflow, working pressure, and heat exchange efficiency.

According to the shape and structure of the heat transfer surface, partition wall heat exchangers can be divided into tube heat exchangers and plate heat exchangers. In the SOFC power generation system, it is often required that the designed heat exchanger has a compact structure and a small piezoresistive resistance. At the same time, it can resist corrosion in a high-temperature environment of 800 ° C and 1 000 ° C to avoid the poisoning of the stack by element volatilization.