Leakage solution of tubular heat exchanger

Usually, the practice of most enterprises is to purchase high-quality heat exchangers as much as possible, and after careful maintenance, extend the service life of heat exchangers as much as possible. After the inevitable leakage, they will be forced to stop surfacing, and it will take 2 ~ 4 people a few days to repair. If the senior welder hired by the enterprise is well paid, the heat exchanger can be guaranteed to continue to be used for a period of time. If the welder's skill is average, it will cause more leakage or even scrap. Enterprises have to replace new heat exchangers, which is due to the disadvantages brought by this traditional method and can not guarantee the safe and continuous production of enterprises. Therefore, many enterprises actively seek new technologies to solve the leakage problem of heat exchangers. By introducing the corrosion resistance and erosion resistance of Fu polymer composite material, the new heat exchanger is protected in advance, which not only effectively solves the problems of weld and sand holes in the new heat exchanger, but also avoids the corrosion of chemical substances on the metal surface and weld points of the heat exchanger after use, and can also be coated with Fu in future regular maintenance. Even if there is leakage after use, it can be repaired in time by rich Shi Lan technology, which avoids the influence of long-term surfacing maintenance on production. It is precisely because of this meticulous management that the probability of heat exchanger leakage is greatly reduced, which not only reduces the equipment procurement cost of heat exchanger, but also ensures the product quality and production time and improves the product competitiveness.

High-thickness coating on tubesheet;

1) Repair the damaged tubesheet to prevent corrosion caused by cavitation or galvanic corrosion;

2) It can be applied to storage tanks, pipelines and valves, and the coating thickness is suitable for many important application environments;

3) Restore the integrity and impermeability of the tube sheet corroded or damaged due to incorrect expansion operation;

4) The tube sheet is insulated from the coolant, which interrupts the circuit caused by corrosion;

5) Streamlined inlet surface treatment can reduce cavitation and improve the performance of continuous cleaning system;

6) Solve the problems related to excessive flow velocity, cavitation, turbine and suspended wear particles;

7) Restore the inlet to the optimal hydraulic state;

8) The reduction of the coating thickness of the casting has no problem for plastic and metal-based inserts (cavitation at the end of the insert; Resistance).

Coating protection of inner surface of heat exchanger and condenser diameter;

1) tubesheet coating is a quick and lasting solution to any internal surface problems of tubesheet;

2) Prevent the damage caused by dirt, various corrosion, erosion and cavitation;

3) suitable for soaking in various water use environments;

4) It is 100% nonvolatile organic compound, which can be used for drinking water through certification;

5) By using our patented semi-automatic equipment, we can quickly apply (20m/s) from 30 microns to 250 microns;

6) Different coating thickness according to customer requirements;

7) 15 to 80mm, the pipe length is 25m；;

8) Application time: during maintenance and shutdown;

9) Endoscope control and DFT ensure complete coating efficiency;

10) research and experiments show that the coating improves the heat exchange rate. The heat exchanger protected by coating maintains high heat exchange efficiency, requires less cleaning intervention and is not easy to leak.

10 reasons for using Meijiahua inner tubesheet coating system;

1) Stop all kinds of corrosion processes immediately;

2) Long-term solutions for new and running heat exchangers;

3) Various feasible coatings can prolong the effective service life;

4) improve heat exchange efficiency and condenser vacuum;

5) Increase the power output by improving the performance of the factory;

6) reduce dirt and improve anti-pollution ability;

7) Cold working technology is safe for heat exchangers, factories and personnel;

8) Repairing the tubesheet is a cost-saving option-50% is faster and 30% is cheaper;

9) field application;

10) was tested according to ASTM D5 162-28 to ensure the surface coverage of 100%.

At the beginning of the 20th century, gongyi city finally developed a tubular ceramic heat exchanger made of silicon carbide. Ceramic heat exchanger has been well developed under the limitation of metal heat exchanger, because it solves the problems of corrosion resistance and high temperature resistance and becomes the best heat exchanger for recovering high temperature waste heat. After years of production practice, it shows that the effect of ceramic heat exchanger is good. Its main advantages are good thermal conductivity, high high temperature strength, corrosion resistance, oxidation resistance and thermal shock resistance. Long service life, small maintenance, reliable and stable performance and simple operation. It is the best device to recover the waste heat of high temperature flue gas at present.

CCTV reported that the problem that traditional materials such as metals are easily damaged in high temperature or harsh environment has been solved for the first time in China. The new technology of replacing metal with ceramics, which was first developed and put into use, has been included in the national torch plan. This new technology turns the cold air used in industrial kilns into hot air, which not only improves work efficiency, but also saves a lot of energy. Ceramic heat exchanger is one of the main equipment to improve the energy utilization rate, which has a wide range of industrial uses and its popularization and application prospects are very considerable.

Ceramic heat exchangers can be used in main hot kilns in metallurgy, nonferrous metals, refractories, chemicals, building materials and other industries, and are making great contributions to energy conservation and emission reduction in the world.