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2. Oxygen corrosion

For the biomass fuel boiler pressure parts,the water side is mainly electro chemical corrosion,the fire side (or flue gas side) is mainly chemical corrosion.The oxygen corrosion belongs to electrochemical corrosion, it is mainly caused by the dissolved oxygen in water.At room temperature,the dissolved oxygen concentration is about 9.1mg / L,according to the GB1576-2001 “industrial boiler water quality” requirement ,the rated steam pressure should not be more than 1.0MPa,the dissolved oxygen concentration should not be more than 0.1mg / L,otherwise,it is likely to lead to metal corrosion.

One bright spot: small footprint design Integrated economizer, air preheater and integrated body design, saving space. Highlights II: advanced cooling technology of low temperature exhaust gas adopts a new environmentally friendly energy efficient technology Ultraten wings tube, the flue gas heat recovery efficiency. Wings built finned tubes, the cooling water does not flow outside the tube fouling; tearing groove design fin heat transfer area is increased 5-fold, sufficiently absorb latent heat of vaporization in the flue gas, a high heat recovery rate; silicon alloy material, corrosion resistance and long life. Highlight three: original elliptical smoke tube air preheater to reduce operating costs oblong stainless steel tube 304, a large contact surface wind resistance, the higher the heat exchange system, improve the supply air temperature, significantly reduce operating costs; corrosion-resistant stainless steel tube 304 high, high voltage resistance to high strength and durability. Highlight four: PLC intelligent control high degree of automation all Chinese color touch screen, real-time dynamic display foam products water pipe boiler manufacturers operating conditions; multi-level pop-up menu, simple man-machine interaction; cloud big data services 3.0 support to ensure the safe operation of the boiler.

Horizontal steam foam products water pipe boiler manufacturers accident treatment method: 1 overpressure accident boiler, boiler overpressure phenomenon of (1) a sharp rise in steam pressure, the pressure exceeds the allowable working pressure gauge pointer over the "red line" safety valve operating pressure is still elevated. (2) the operation of the device is the interlock overpressure protection, should send overpressure alarm signal, stops the air blowing, the wind, coal. (3) steam temperature and steam flow rate reduction increases. 2, to treat boiler overpressure (1) weakened rapidly burning, manually open the valve or bleed valve. (2) increase the water supply, while the lower reinforcing blowdown drum (It should be noted at this time to maintain the normal water level of the boiler), in order to reduce the temperature of the boiler water, thereby reducing the pressure in the boiler drum. (3) as a safety valve malfunction or all of the pressure gauge damage, emergency shutdown, safety valves and pressure gauges are to be repaired after the boost operation. When endanger the safe operation of (4) Boiler excessive pressure, blood pressure should take measures, but too fast buck is strictly prohibited. (5) boiler overpressure eliminate serious, to the shutdown of the boiler internal and external inspection, to eliminate the overpressure caused by deformation, leakage and other safety accessories and maintenance unqualified. 1, the phenomenon of the boiler water (1) below the minimum safe water level line, or no visible water, the water table glass (plate) as a white. (2) as a full-color water level gauge vapor instruction color. Low water level alarm signal (3) water level alarm occurs. (4) low water interlocking means, the water level should be below a prescribed value blower, Fan, grate reduction motor stops running. (5) a sharp rise in the superheater steam temperature, higher than the outlet steam temperature. (6) boiler exhaust gas temperature rises. (7) the water flow is less than the steam flow, causing Should the water tube due to tube cracking or economizer, an opposite phenomenon occurs. (8) When a serious water shortage, can smell the burnt smell. (9) When a serious shortage, the door can be seen from the red-hot waterwall tubes. (10) a serious water shortage, the furnace tube may rupture, then can hear the explosions, smoke and steam from the door, watching spray the fire door.

Gas foam products water pipe boiler manufacturers water treatment in the application of protective measures II: to prevent the boiler fire blasting has been included in the ministerial twenty counter-measures, including fire protection, including the FSSS has been promoting the use of many power plants, it highlighted a few points : 1. references to the fire blasting. Key anti-ministerial twenty measures of the five. Called boiler fire to prevent shooting accidents. The blast furnace is correct formulation, because electric boilers, oil-fired boiler and gas furnace boiler furnace explosion caused damage not only in the operation of the fire, the flare ignited focused overhaul of combustibles and purge the ignition is not the same explode resulting in damage to the furnace.