The molecular weight of CaCO3 is 100 and the molecular weight of MgCO _ 3 is 84. Therefore, in the case of complete scaling, the theoretical amount of scaling is: CaCO3 scale is 100 × 86.73mol=8673g=8.673kg. MgCO3 scale is 84 × 1.77mol=148.68g=0.149kg. Although the water quality of the boiler fully meets the requirements of the boiler supervision regulations, there is still residual hardness in the softened water after reaching the standard. In the operation of the boiler, the water supplied to the system is continuously circulating. The residual hardness will eventually scale at the high temperature of the boiler. The calculated results show that the amount of scaling can reach 8.8 kg in this heating cycle, which has become a threat to the local high temperature furnace tubes.

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15 ton wood pellets typical steam boiler profit margin advantages:

1. Full combustion

While the purge of the boiler furnace and flue is a certain flow velocity of the air with. Case 3, in the rear of the boiler did not take anti-corrosion measures or condensation water collection, etc., gas boilers should avoid long-term operation at low load or low-parameter case.

4, the combustion gas boiler adjustment process, to ensure the quality of the combustion, it is necessary to detect smoke components, to avoid too high excess air and incomplete combustion. Generally, the gas-fired boiler during operation, the carbon monoxide content should be less than 100 ppm, and at high load operation, the excess air ratio should not exceed 1.1 to 1.2; under low load conditions, the excess air ratio should not exceed 1.3.

5, real-time attention should fireman switch case of a gas valve. Gas line not leak, if unusual circumstances, such as the boiler room abnormal odor, not open burners, ventilation should be checked to exclude odor, check valves, only put into operation is determined normal.

6, a gas boiler for liquid fuel with air, special attention should be ventilated boiler room. Because of severe liquid gases than air, in case of a leak can easily cause condensation of liquid and spread on the ground, resulting in a vicious explosion.

7, after a period of time or inspection line outage, when the single-column hydraulic machine into operation again, should open the vent valve, bleed time, deflation time should be determined according to the length of the pipeline and the gas species. If a longer boiler downtime, it should cut off the gas supply valve, close air release valve.

8, the gas pressure is too low and not too high, to be run within the set range, the specific parameter provided by the boiler manufacturer. When the boiler running for some time, found that the gas pressure is below the set value, should contact the gas company. Burner operation for some time, should be checked line filter is clean, as a lot of pressure drop, there may be too many impurities in the gas, the filter is clogged, washing should be removed, if necessary, replace the filter.

9, should comply boiler unit boiler manufacturers operating instructions provided by the manufacturer and the burner, and the description should be placed in a convenient place for easy, for inspection. When there are unusual circumstances and can not solve the problem, depending on the nature of the problem promptly contact boiler plant or gas company, to conduct maintenance by a professional maintenance staff.