Energy Saving Vertical Industrial 2 ton Steam Boiler
How are gas-fired boiler explosion, and what means can suppress explosion: Since spring, our Tai'an, Shandong, Sichuan Mianyang and other places have a boiler explosion occurred, causing casualties and damage a large area, as well as serious adverse social impact .
Cleaning of Natural Gas BoilerNatural gas boiler after a period of time will have scale, rust and other problems, which requires us to clean up equipment from time to time. Natural gas boiler cleaning is not like our daily necessities cleaning, see how this article is introduced. After a long period of operation, the natural gas boiler inevitably has the problem of scale and corrosion. The main reason for the formation of the scale in the boiler is that there is a hardness component in the feed water, and after continuous evaporation and concentration at high temperature and high pressure, A series of physical and chemical reactions take place in the furnace, resulting in the formation of a hard, dense scale on the heated surface, resulting in a decrease in the heat transfer effect and corrosion factors under the scale, which will lead to a pot The water wall furnace heat absorption decreases, the boiler outlet temperature increases, and the boiler loss increases. At the same time, after scaling in the water wall, the heat transfer effect is reduced, which may lead to the increase of the wall temperature of the water wall and the explosion of the water wall, which affects the safe operation of the natural gas boiler. Scale is the first harmful factor of boiler, and the main cause of boiler accident. Its harmfulness is mainly manifested in the waste of a large amount of fuel: because the thermal conductivity of scale is only a fraction of that of steel, the heat transfer will be blocked after scaling on the heated surface. In order to maintain a certain output of the boiler, it is necessary to raise the temperature on the side of the fire so as to cause the heat loss caused by outward radiation and exhaust smoke. Now you can. The gas-fired boiler is cleaned with high-efficiency environmentally friendly non-corrosive cleaning agent. The cleaning agent completely dissolves the cleaning scale, which makes the tube of the equipment exposed to the original metal color, and reduces the influence of scaling and biological algae sludge on the gas-fired boiler. At the same time, it can peel off iron oxide and ferrous oxide, prolong the service life of gas-fired boiler, reduce energy consumption and increase productivity. Natural gas boiler cleaning should be carried out by professional cleaning companies to ensure a thorough and effective cleaning equipment.
Cade Shopping Mall is located in central Shanghai Hongkou District, Shanghai Daily larger flow of people in the region. The introduction of Shanghai air pollutant emission standards, boiler flue gas emissions of nitrogen oxide emissions to less than 80 mg / m, Shopping Mall a coal-fired boilers have been used for many years, NOx emissions far super to this request, the urgent need to replace more environmentally friendly low nitrogen emission boilers. Other units through the use of fast Boiler introduction and understanding, determined and fast boiler to achieve cooperation, party fast to their specific needs to recommend one condensing gas hot water boiler of a 4.2MW for heating needs of the shopping center.
Why ash rear of the boiler heating surface steam temperature will reduce? In order to clean the boiler heating surface, reducing the exhaust gas temperature to raise the thermal efficiency of the boiler, heating surface, convection heating surface is mainly ash regularly. Since thermal efficiency boilers, such as maintaining the same boiler evaporation, the amount of fuel supplied into the furnace, the flue gas temperature and smoke velocity reduction furnace outlet, the heat absorption of the superheater heat transfer coefficient due to the temperature difference and the heat of the gas side lowering reduced, resulting in superheated steam temperature drops. The fuel quantity remains unchanged, the furnace exit gas temperature and smoke constant speed, due to increased steam flow and reduce heat absorption per unit mass of steam, superheater outlet steam temperature drops. Thus, convection heating surface ash, whether it is to maintain unchanged the amount of evaporation or the amount of fuel remains unchanged, so that both steam temperature drops.