The vast majority of our country is used in thermal power generation, compared with other ways, thermal power has high flexibility, safe and effective, but less restrictive factors of resource constraints and other factors, compared to nuclear power, hydropower, solar and wind energy for China's basic national conditions, so the thermal power plants in our country occupies capacity 75%. But compared to other power generation, the pollution of thermal power is the highest, and the main pollution is smoke, dust, noise and so on. The flue gas containing sulfur dioxide in these pollution has the greatest pollution to the environment, and it is generally easy to cause sulphuric acid rain and nitric acid rain. Sulfur dioxide is one of the main pollutants in the atmosphere and is an important indicator of the pollution of the atmosphere. There have been serious events in many cities the world, which have caused many people to be poisoned or died.
1, multidimensional compensation for non-metallic expansion joints
The need to meet the multidimensional compensation of the system
2. Noise reduction and shock absorption
Fiber fabric and so on itself have good sound absorption, can effectively reduce the noise and vibration produced by the boiler, the fan and other equipment.
3. High temperature resistance and corrosion resistance of non-metallic expansion joints
It is made of silicon rubber cloth, fluorine rubber cloth, glass fiber, polytetrafluoroethylene and so on. It has good resistance to high temperature and corrosion resistance.
4. Easy to install
It is simple in structure, light in weight, easy to install and maintain, and is well sealed.
5, the power plant flue gas environment contains a large number of such as SO2 (sulfur dioxide), SO3 (three, HCl 2) (hydrochloric acid) and HF (hydrogen fluoride) and other acidic substances, in acid silica gel trace performance decreased rapidly, even if the coating is arranged on the inside, operation is easy to produce leakage cause performance expansion section decreased rapidly, product damage very quickly, so the non metal skin in the flue with silicone rubber is not appropriate.
6, the non-metallic expansion joints of the flue must be covered with fluorine. Fluoro rubber is a synthetic elastomer with fluorine atoms on the carbon atoms of the main chain or side chain. It has the characteristics of high temperature resistance, oil resistance and chemical resistance. Fluorine rubber can work under 200 degrees long, is the best performance of the rubber material corrosion resistant rubber material, acid gas containing flue gas in almost no corrosion for fluorine rubber, fluorine rubber is therefore the preferred material non metallic covering power plant flue gas environment, although the price is slightly expensive, but to ensure the quality of the long term, right and necessary.
In some cities and towns in China, the harm of sulfur dioxide in the atmosphere is more common and serious. Sulfur dioxide has strong irritation on human conjunctiva and upper respiratory tract mucosa, which can damage ventilator tube, which can cause bronchitis, pneumonia and even pulmonary edema, respiratory paralysis. Short term exposure to sulfur dioxide is 0.5 mg / cubic meter of air for elderly or chronic patients. The mortality is increased. The concentration is higher than 0.25 mg / m3, which can aggravate the condition of patients with respiratory diseases. It has made a positive contribution to the non-metallic skin of environmental protection.