Recently, Binzhou City, Shandong Province High-tech District Supervisor Bureau to carry out special rectification actions boilers within the region, mainly to effectively prevent and resolutely curb special equipment accidents from happening again, strengthen security principal responsibility.
Inspectors use of "without warning, went straight to the scene" way of checking for nine boiler units within the region conducted a comprehensive inspection, focusing on aspects of boiler operation, the operator of personal responsibility, troubleshooting, safety test accessories, etc. a comprehensive investigation. Long-term idle boiler, supervise the use of units in time for deactivation procedures; management is not in place, there are security risks of the use of units, ordered deadline to complete the hidden rectification. The campaigns, check out a total of more than 30 people, to identify risks at 8, at the completion of the rectification 8.
Next, Binzhou City High-tech Zone Market Authority will continue to strengthen law enforcement and inspection efforts, compacted layers of responsibility, and strengthen security consciousness, special equipment to protect the region's security situation continues to stabilize, escort for the economic development of high-tech zones.
In production, there are often some thorny problems in boiler operation. Needless to say, the editor for you to sort out the boiler operation common problems and solutions, after learning, do not forget to share with your friends oh. In the process of manufacture, transportation, installation and maintenance of boiler, it is inevitable that some impurities such as dirt, iron chips, welding slag, iron oxide and so on will be produced and glued to the pressure parts of the steam and water system in the process of manufacture, transportation, installation and maintenance. As soon as these impurities enter the steam-water system in operation, they will do great harm to the boilers and steam turbines. Therefore, the boilers before they are installed and overhauled must be chemically cleaned to remove them. Feed-in speed of boiler before start-up Degrees should not be too fast, generally no less than 4 hours in winter, other seasons 2 to 3 hours, especially in the initial stage of water should be slow. The inlet water temperature of a cold boiler is generally at 50 ℃ 90 ℃, so that the difference between the feed water temperature entering the drum and the wall temperature of the drum is less than 40 ℃. If the boiler is not fully cooled, the inlet water temperature can be compared with the drum wall temperature, otherwise, the inlet water speed should be slowed down. The reason is! (1) because the drum wall is thicker and the expansion is slow, the tube wall connected to the drum wall is thinner and the expansion is faster. If the inlet temperature is too high or the inlet speed is too fast, it will cause unevenness of expansion, crack of welding joint and damage of equipment. (2) when water supply enters When the drum is in contact with the lower wall of the drum, if the difference between the feed temperature and the wall temperature of the drum is too large, the speed of entering the water is fast, the upper and lower walls of the drum, the inner and outer walls of the drum will produce a larger expansion difference, resulting in a larger additional stress to the drum. Causes the steam drum to deform, produces the crack when serious. When the temperature of the heated surface is lower than the dew point of the flue gas, when the temperature of the heating surface is lower than the dew point of the flue gas, the steam in the flue gas is combined with the SO2,SO2 to form the sulphuric acid steam, which condenses on the heated surface. The boiler always causes low temperature corrosion of the heating surface first. The cold end of air preheater is prone to low temperature corrosion.
Measure the pressure testing of four main criteria: 1, the metal walls of the pressurized components and no water mist; 2, after the pressure is reduced to the operating pressure at the inflation port without dripping beads; 3, sheet cast iron boilers seal pot at the rated working pressure no longer drops dripping beads; 4, after the hydraulic test, no significant residual deformation.
Premix condensing gas boiler, widely used in industrial parks, schools, hospitals, hotels, residential quarters, office buildings, shopping malls and other units. One of the biggest advantages is its low nitrogen environment, nitrogen oxide emissions can be less than 30 mg / cubic meter, fully meet the requirements of the national environmental standards, another big advantage is more economical gas province, boiler after a reasonable design structure, achieve excellent fuel and air mixing ratio, combustion of the fuel more fully, the corresponding fuel economy improvement, the user input fuel costs will be reduced.
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