The waste heat utilization of low temperature flue gas of boiler has been affected by low temperature dew point corrosion, resulting in high exhaust gas temperature and unsatisfactory energy-saving effect. The service life of traditional metal heat exchanger is too short to meet the requirements of energy saving, and fluoroplastic heat exchanger has some reliability problems, such as unstable tube bundle, easy to wear and leak, easy failure of tube head connection, and easy softening at high temperature. The thermosetting polymer graphite high thermal conductivity heat exchanger (polymer graphite heat exchanger) developed by our company can effectively solve the above problems. Polymer graphite heat exchanger is a new type of heat exchanger designed and manufactured by using high-performance thermosetting engineering plastics, which aggregates polymer graphite, carbon fiber and other materials to form a new type of tubular type heat transfer element through thermosetting and molding. The product can resist the corrosion of hydrofluoric acid, sulfuric acid, nitric acid and other strong corrosive media. And high heat transfer efficiency can still be kept when heat is removed from low-temperature dew-point corrosion flue gas, and that heat transfer effect is equal to that of a metal heat exchanger. It can be widely applied to sulfur-containing corrosive flue gas in the industries of electric power, petrochemical industry, steel and etc, and has the features of corrosion resistance, high reliability and good energy-saving and cost-reducing effects.
Product features:
(1) It can resist dew point corrosion of high-acid media containing sulfur, chlorine and etc;
(2) Excellent temperature resistance, the highest working temperature can reach 200 ℃;
(3) The graphite crystal has high hardness and strong wear resistance, which can withstand the long-term high-speed sweep of 50 mg/m³ dust and flue gas.
(4) Heat exchange efficiency is high, and the running resistance is small;