Treatment of four-tube Fault in small-sized Oil-fired BoilerSmall oil-fired wns industrial low pressure 1 25 mpa boiler four-tube is the boiler's water wall, economizer, superheater, reheater. The reason for the high failure rate of the four tubes is that the external working environment is bad, and it needs to withstand the radiation of high temperature flue gas and particles, corrosion, convective shock, local heat irregularity, and the interior contains high temperature and high pressure liquid, gas or liquid gas mixture. Causes such as external wear, poor material, poor welding, corrosion of flue gas, fracture caused by external force or stress and so on, may cause four pipes; leakage accidents occur. The recommended solution is to make use of acoustic spectrum analysis and other techniques to monitor the leakage of boiler four tubes in real-time on-line, to detect its slight leakage in the early stage of failure and to alert it in time, so that personnel can carry out important on-the-spot inspection and safety. Arrange reasonable maintenance, thus avoiding the passive accident maintenance. The widely used method of monitoring leakage is the observation and monitoring of operators in the process of inspection, and the analysis and judgment of the change of steam flow rate, pressure, temperature and water supply by using the parameters such as steam flow rate, pressure, temperature and water supply. The common disadvantage of these methods is that the real-time performance is poor and there is a great lag, and the delay time depends on the intensity of people's attention time, so the method to improve the real-time performance must increase the intensity of personnel's work. However, if the pipeline characteristics of small oil-fired boiler are not found and dealt with in time, if the internal pressure is leaked, it will lead to more serious impact and treatment. Damage, resulting in the difficulty and workload of maintenance, thereby increasing maintenance costs and downtime. This requires automatic monitoring and protection system-based, manual-assisted three-dimensional security management.
The main reason is the wns industrial low pressure 1 25 mpa boiler explosion personnel improper operation or other failure causes pressure inside the boiler load is too large, in an instant release after squeeze a lot of energy. Boiler water, the scale too much, too much pressure and so are likely to cause an explosion.
The compact CFB boilers supplied by ZG is now operating in many countries and the operation of all the CFB boilers are well.One advantage of CFB boiler is to effectively and economically reduce SO2 by adding limestone into the CFB furnace.High availability is another advantage of compact CFB boiler.With optimized boiler design and skilled operation and maintenance by the plant personnel, petroleum coke firing compact CFB boiler can have very high availability.
Lanzhou City, Gansu Province, the transformation of coal-fired wns industrial low pressure 1 25 mpa boiler control policy in accordance with the latest introduction of the "not big on the small" principle to give "Yijiangdaibu" financial support to owners of units, specific subsidies are as follows:
1, for a single 1 ton / hour or more than 0.7 megawatts of clean energy and coal-fired boilers by 100,000 yuan to subsidize steam tons of standard /.
2, coal-fired heating boilers mentioned standard governance and meet the national air pollutant emission limits in particular boiler, according to subsidize 50,000 yuan / ton steam standards, subsidies does not exceed 30% of the total investment quota.
3, for a single 1 ton / hour or 0.7 megawatts of utility units (including schools, health centers, hospitals, neighborhood or township government offices and other public units) clean energy transformation of coal-fired heating boilers in accordance with the actual heating area subsidies, allowances of 100 yuan / square meter.
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