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what use boiler drum

Function of lever type safety valve for industrial what use boiler drumIndustrial boiler lever type safety valve is divided into single lever type and parallel bar type. Because they act on the valve core through the heavy torque of the lever and the weight hammer, they are used to balance the steam (water) pressure, also known as the weight hammer safety valve. Stem (heavy hammer) safety valve is mainly composed of valve core, seat, lever, weight hammer, limiting device and so on. By using the weight of the weight hammer, the valve core is pressed on the seat by lever, and the position of the weight hammer is moved to change the weight torque to adjust the opening pressure of the safety valve. When the boiler pressure exceeds the pressure of the weight hammer acting on the upper part of the valve core, the valve core is lifted out of the seat and the steam is discharged. To boiler pressure below heavy When the hammer acts on the pressure of the upper part of the valve core, the valve core falls down and the boiler stops exhaust steam. The safety valve is simple in structure, convenient in adjustment and reliable in performance, so it is widely used in boilers. The general horizontal bar safety valve is suitable for low pressure boiler, and the parallel bar type safety valve is suitable for medium and high pressure boiler.

1, the calculated blowdown rate: an index showing a blowdown blowdown rate, i.e., blowdown water blowdown rate (Q sewage) percentage of the amount of evaporation what use boiler drum (Q vapor) is. Expressed as follows: K = Q sewage / Q vapor × 100%. When the amount of the boiler water stable, balanced relationship according to the amount found that a substance with the water supply into the furnace equivalent amount drained waste water with an amount of saturated steam and entrained. The (Q dirt + Q vapor) × S a = Q vapor × S vapor + Q sewage × S sewage where S a, S vapor, S sewage represent the feed water, saturated steam, the content of a substance in the sewage water, in the formula S the value by the salt content, can also be a component of the content (e.g., alkalinity, chloride ion) is calculated. Sewage is K = Q / Q vapor = (S a -S vapor) / (S -S sewage to) × 100%.
2, blowdown rate is calculated to be noted that the following three points: (1) can be calculated blowdown rate alkalinity or chloride ions (chlorine ions and salinity have relatively fixed proportional relationship, usually replaced by chloride ion salinity) were calculated blowdown rate, whichever is greater final values ​​as blowdown rate, general heating boiler blowdown rate should be controlled below 10%. (2) for a large capacity boiler, because of its good effect of water separation apparatus, the humidity vapor is minimal. Such salt content is much lower than the saturated steam to water salinity, so in this boiler blowdown rate is calculated in both the salt content of the steam can be ignored, i.e., to K = S / (S sewage -S a) × 100% (3) for most industrial boilers, especially small volume of the drum, water separation device is simple, a large amount of water with saturated steam in industrial boilers, steam wetness often around 3% (control blowdown rate comparing the range of 5% to 10%, is already not too low) salt content can not be ignored when the steam boiler blowdown rate is calculated under this condition. Since K = (S a -S vapor) / (S -S sewage to) = CL- to / (CL- -CL- to sewage) -CL- vapor / (CL- -CL- to sewage)

13th of this month, Jiangsu Province, held a working meeting air pollution control, meeting the main objectives and tasks around the year, and plan the next phase of priorities, from morning to promote strict air pollution control this year's tight.

First, in-depth treatment of industrial pollution, dehumidification start off white along the Yangtze River coal-fired power project to promote the electricity, steel, cement, coke, glass, carbon, boilers, furnaces and other key industries the full implementation of the transformation of ultra-low emissions, the province basically completed iron and steel enterprises sintering machine ultra-low emission transformation, cement, coke, glass, carbon industry to achieve the emission limits set provincial requirements.

How to distinguish pressure hot water what use boiler drums and pressure hot water boiler: During hot water boiler used, it was often not clear distinction between pressure hot water boilers and pressure hot water boiler, understand their characteristics, below, small taping we take a closer look. First look at the difference between the two structural constraints, as pressure hot water boiler requires only a reasonable layout of the heating surface, reasonable water cycle, others do not think too much. The pressure hot water boiler under pressure due to their relatively clear, there will be restrictions in all aspects of selecting the location, such as boiler water capacity, it is also one of the two different points. Second, you can look at the issue level control. Pressure hot water boiler level control in question during operation, a drum full of water in the state of opening the box top is still connected, and the pressure is not the same as the hot water boiler. Look inside the boiler pressure changing conditions.

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