11tons steam boiler in qatar for seafood industry production
Divided according to the heated structure, China's current industrial boilers can be basically divided into the following three categories: water tube, fire and water tube, fire-tube. Details are as follows.
Causes and treatment of electric boiler fire 1 which, the powered electric boiler on flammable or near inflammables, fire baking at a high temperature for a long time. 2, electric boiler is not installed plug directly into the socket end of the wire, thereby easily cause a short circuit and fire. 3, the user does not unplug the plug of the electrical boiler when leaving, too long, resulting in electric boiler superheater, the adjacent fuel ignited and cause a fire. Fourth, after repeated repair continue resistance wire, may cause overloading fire line. Precautionary approach to solve the electric boiler fire: 1, plug wires must be installed, the thread can not be directly inserted into the socket; electric boilers should be replaced old and damaged wires, electric boiler circuit is not installed fuse may not be used; 2, when the electric boiler must be used left unattended, should be left unplugged, during use, the case of power failure, it should promptly pull the plug, do not forget. For the repair of multiple resistance wire, preferably no longer in use, should be replaced with a new resistance wire. Electric boiler must be placed on the thermally non-conductive non-combustible material of the base; 3, the cross-sectional flow boiler safe electrical wires must meet the capacity requirements of electric boilers, industrial boilers separate electric circuits in any case be means.
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The sum of the concentrations of Ca2 and Mg2 in water is called the hardness of water. It is clearly stipulated in the regulation of boiler supervision that the hardness of boiler water is ≤ 0.03mmol/L.Ca2 and the Mg2 is distributed in water in the form of ions, even if the water is softened, there are still some sulfate ion and bicarbonate ion in the water. Because bicarbonate ions are always dissociated in water, i.e.: HCO3-A→H++CO32-(1). Although the dissociation is very weak in this process, the dissociation is strengthened due to the (2), (3) reaction. Then, in boiler operation, there are always conditions for the formation of insoluble substances: Ca2++CO32--CaCO3(2). Mg2++CO32-→MgCO3+(3)