The application of plate and shell heat exchanger in power plant flue gas recovery

Under the environmental initiative of energy saving and emission reduction, waste heat recovery and utilization has become the most popular trend. For power plants that consume a large amount of energy, if waste heat can be effectively recovered and used rationally, it will greatly promote production and achieve resource conservation. Recycling. Among the many waste heat losses in power plants, flue gas losses account for the largest proportion, so the development of plate and shell heat exchanger in power plant flue gas recovery The use of heat exchanger in flue gas heat recovery is of great significance.

Domestic use of heat exchangers for waste heat recovery from the 1990s has begun, but with the innovation of heat transfer technology and the use of new materials, plate and shell heat exchanger in the flue gas waste heat recovery role is obvious, high utilization rate of flue gas recovery, low energy consumption, to achieve effective and rational use of resources, energy saving and emission reduction.

Plate and shell heat exchanger in the use of flue gas recovery is faced with two problems, one is the corrosion problem, because the flue gas contains sulfur dioxide. oxidation to form sulphur trioxide, which eventually combines with water vapour to form sulphuric acid vapour, which can cause corrosion of the heat exchanger. However, there are very special materials that can be used, so this corrosion can be mitigated.

The second problem is the potential for ash accumulation. This is particularly prominent in coal-based power plants, which can produce scaling that affects the efficiency of heat transfer, and problems that affect the service life and production. However, regular cleaning and maintenance can make this situation improve.

The extensive use of plate and shell heat exchanger in power plant flue gas recovery also indicates that people are paying more and more attention to waste heat recovery and resource recycling, which, of course, is in line with the country's advocacy for environmental protection, energy conservation and emission reduction, Qingdao Riport vigorously develop plate and shell heat exchanger, hoping to contribute more to the road of sustainable development.