Popular Steam Boiler


Popular Steam Boiler

Recently, in Jiaxing City in Zhejiang Province Nanhu District, officially launched a comprehensive investigation and action on gas boilers and biomass boilers urban built-up areas, and actively promote the transformation of low nitrogen emission gas-fired boiler, Zhejiang Province, determined to win the Battle of the sky made own contribution.

According to the requirements of the investigation, the South Lake district towns, streets, parks within the jurisdiction of the respective gas boilers and biomass boilers urban area to take home from house to house visits Paimo way, the ecological environment Branch area combined with market regulators issuing a list a verification form inventory management. After the statistics were found in the region with gas boiler 35 units, built-up area of ​​biomass boiler Taiwan.

Meanwhile, Nanhu District will be in more than 500,000 cubic meters of natural gas consumption in the four on-site visits to enterprises as a pilot enterprise low nitrogen transformation operations boilers, ecological environment Branch area of ​​personnel, publicity reform provinces, municipalities and low nitrogen emissions on gas-fired boiler requirement that the premise of ensuring safety in production, natural gas boiler NOx emission after the transformation shall not exceed 50 mg / cubic meter, and listened carefully to the enterprise raised about the difficulties of combustion gas boiler low nitrogen transformation exists.

To speed up the investigation and major renovation large boilers, Nanhu District definite time node, before the end of 2019 business model will complete the transformation of low nitrogen gas boiler, at the same time, the city built-up area of ​​biomass boilers implement ultra-low emissions transformation. Nanhu District will adhere to routine inspections and investigation focused on the combination of concentration and control checks and unannounced visits to combine law enforcement when combined with the daily supervision and wrong, and the law enforcement inspection report from the masses combine to ensure long-term monitoring of boiler regulation implemented.

Heating popular steam boiler is available and boiler return water problems: steam boilers, which for us, is very familiar with and understand, because the site has articles related to elaborate and explain the relevant knowledge and content, or to answer Some common questions, so you can let everyone know that it is a kind of boiler, and at the same time, you can use proper operation. So, based on this, then, we will continue this work so that we also benefit from some of the new harvest and inspiration. 1. Are all steam boilers, need to be tested? This, then, from the current requirements of the relevant point of view, is not necessarily. Because the provision is greater than 0.25 m3 volume, and the pressure is greater than 0.1MPa steam boiler, the need for testing, so, if not meet the above requirements, then, it can not be tested. 2.100 kg of steam boilers, which specifically refers to what? In addition, brood heating, steam boiler is available? 100 kg of steam boilers, in terms of the specific case, it refers to 100 kg per hour into a boiler water into steam. Brood and heating, using steam boilers inappropriate, and the inappropriate use of plumbing boilers. In general, the use of special brood heating boiler, more appropriate.

Third, do not use over-pressure boiler

Since the pressure of the boiler can withstand pressure in the boiler has been used previously to determine a good through precise calculation, it is not freely beyond a predetermined pressure range. Because the thickness of the steel and testing requirements of different pressure boiler used is not the same, if not in strict accordance with the provisions of excess pressure boiler will result in unbearable pressure boiler explosion.

How to improve the thermal efficiency of gas-fired boiler fuel: fuel gas for the boiler, in order to save fuel, improve the thermal efficiency of the boiler, common measures are: 1, the use of flue gas heat recovery technology to reduce exhaust losses. The main factors influencing the heat loss is the exhaust gas temperature. The higher the exhaust gas temperature, the greater heat losses. Currently, when most of the new boiler factory is equipped with flue gas heat recovery unit, such as economizers, half or full condensation condensing flue gas heat recovery device, these measures can effectively reduce exhaust gas temperature and improve the thermal efficiency of the boiler. 2, when the excess air coefficient is too high, excess equivalent of inhaled cold air into the furnace, which is not involved in some of the excess cold air combustion, but is freely drained after heating increases heat losses; as entering the furnace cold air continues to increase, beyond a certain limit, the furnace temperature will be reduced, can also cause incomplete combustion loss increases. When the excess air coefficient is too low, the fuel can not get enough oxygen for complete combustion, resulting in incomplete combustion loss increases. The long-term severe incomplete combustion, boiler heating surface will result in carbon impact heat transfer efficiency, continues to increase exhaust losses. Therefore, the reasonable control of the air-fuel ratio to minimize heat losses and incomplete combustion losses q2 q3, is another key point to enhance the thermal efficiency of the boiler. 3, strict control of boiler water quality, scientific management and control scale. Boiler feed water will contain various impurities and calcium and magnesium scale substances, boiler fouling inevitably. Low thermal conductivity of the scale, so that once the heating surface increases the thermal resistance to fouling, boiler exhaust gas temperature rises, heat losses will increase. Test data indicate that the boiler heating surface junction 1mm scale, heat losses will increase from about 2% to 4%, the thicker the scale boiler heating surface, the greater the resistance, the thermal efficiency of the boiler will be lowered more. Boiler fouling not only reduces the thermal efficiency of the boiler, and the boiler Heating Surface temperature rise, causing heating surface damage, and even cause boiler explosion. Therefore, high-quality soft water treatment apparatus, in strict accordance with the process operating boiler feed water softening apparatus, boiler feed water quality control, can delay scale formation. Meanwhile, boiler scale control in real time to master the situation boiler scale, a scale clean-up, if necessary, is also very important. 4, strengthen the insulation, to prevent leaking, reduce heat loss.

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