By the mid-1980s, energy prices and enhance the development of materials science and technology told, there has been recuperative condensing technology. A high temperature flue gas and water are not in contact, the intermediate thermally conductive corrosion resistant material. Condensing water tube boiler francia is currently the most of the technology used. Describes a low temperature heat exchanger corrosion after conventional boiler air and gas mixing, heat is obtained by combustion, flue gas discharge temperature of about 170 ℃. Flue gas containing water vapor, CO2, steam sulfate. Since natural gas inevitably contains a sulfide, after combustion of SO2, produced of SO3 (accounting for about 5% SO2) is oxidized after the combustion continues. SO2 is combined with water to generate sulfite, SO3 combines with water to form sulfuric acid, the acid dew point temperature of about 140 deg.] C to 160. deg.] C (depending on the content of SO3 lift). When the exhaust gas temperature at a conventional boiler 170 ℃, gaseous sulfuric acid vapor does not produce significant corrosion of the main heat exchanger. When the latent heat of the flue gas collection (the exhaust gas temperature is reduced to 50 ℃), will produce a strong acid corrosion of the main heat exchanger. And the corrosion occurs mainly in heat exchange contact surface area lower temperature, referred to as low temperature corrosion. Can be achieved at low temperature corrosion serious 1mm / year perforation caused by the contact surface, the current science and technology still can not avoid low temperature corrosion, can only minimize.
We have long known that fast water tube boiler francia this brand, high-tech enterprises in Henan Province, the most influential brand, technology entrepreneurs contribution to enterprise and many other honors, so that our brand is very interested in each other fast. Through this collaboration, proving once again that our decision is not wrong, 15 tons of steam condensing gas boiler provides steam to fully meet the needs of our dairy products processing plant. --customer feedback
Second, condensing water tube boiler francias more environmentally friendly. Compared with conventional coal-fired boiler, condensing boilers are generally clean and environmentally friendly natural gas as fuel, the exhaust gas boiler having a much reduced, alleviating urban air emissions of sulfur oxides, nitrogen oxides, dust and other harmful substances, green pioneer in environmental protection boiler products.
The inner parts of the pot include steam-water separation and steam cleaning, water distribution pipe, sewerage and dosing equipment, etc. The function of the steam separator is to separate the saturated steam from the water wall and to minimize the amount of water droplets carried in the steam. In the middle and low pressure water tube boiler francias, baffles and gap baffles are commonly used as the coarse separation elements, and the boilers above the middle pressure widely use various types of cyclone separators for coarse separation, and further separation is carried out by means of shutters, wire mesh or even steam plates, etc. The drum is also equipped with water level meters, safety valves and other monitoring and protection facilities.