Annealing furnace waste heat recovery Description: metallurgical industry is energy-hungry, or whether non-ferrous metallurgy metallurgical industry there are a large number of black energy issues. Iron and steel companies, for example, coke oven, blast furnace and steel-making procedure has a considerable amount of waste heat could not be recycled. Waste heat temperatures up to 1600 ℃, the solid form of heat, gas, liquid, many of the gap discharge, consequent to the waste heat recovery to bring a certain degree of difficulty. As many of the characteristics of heat pipes, particularly suitable for the above case of heat recovery. High-temperature and high-temperature heat pipe heat pipe air preheater, high temperature heat pipe steam generator developers use successfully for metallurgical enterprises of high-grade waste energy use has brought new hope. Furnace and soaking furnace waste heat utilization: Rolling continuous heating and soaking furnace iron and steel enterprises in more energy-consuming equipment. The thermal efficiency is generally only 20% to 30%, about 70% to 80% of heat loss to the surrounding environment and the smoke away. In which the flue gas heat loss away about 30% to 35%. Furnace flue gas volume of the furnace according to different sizes, usually within (standard state) 7000 ~ 300000m3 / h range. Flue gas temperature is generally 550 ~ 990 ℃, there are more than 1000 ℃ 超过. From the direct saving to consider, engineering hope to flue gas waste heat is used to heat combustion air. When combustion air is heated to 400 ℃, it can be saving 20% ??to 25% of the results. Project flue air flow (standard condition) / (m 3 / h) 3500 3000 inlet temperature / ℃ 700 40 outlet temperature / ℃ 200 400 Pressure drop / Pa 420 500 Equipment Specifications / m length width * 0.7 * 0.9 * 1.2 high heat pipe Specification / mm φ 38 * 1200 fin size / mm 2 high 14 * thick steel smelting furnace annealing furnace waste heat recovery steel industry grate temperature above 800 degrees -1000 degrees, smoke away about 30% of heat loss - 35%, aluminum melting furnace temperature over 350 degrees, use of flue gas heat recovery heat combustion air, or get steam, hot water do the production and living with. Heat recovery Advantages: 1. waste heat recovery using phase change heat transfer, plus outer coating of acid corrosion, strong strength and corrosion resistance. 2. The heat pipe is a vacuum phase transition tube, not burn, explode, non-corrosive, non-toxic, corrosion resistant, and are not afraid of leaks, etc. 3. The bottom of the waste heat recovery has traps, such as leaks can be quickly discharged without entering the furnace to ensure system security. 4. Using circulating pump, and internal heat recovery negative pressure, even if corrosion perforation will not leak. 5. waste heat recovery when the quantity is large, low wind speed, small abrasion. 6. backwater equipped with an electromagnetic valve, water pump, leakage alarm linkage can always cut off any failure to ensure system security. 7. bottom leakage alarm device to increase the safety factor.