Recently, we learned that the city of Zhangjiakou Yuxian environment departments to carry out a special investigation of coal-fired boilers, coal-fired boilers have complete control of the number of the county, painstaking, and practical coal-fired boiler renovation work to ensure safe and stable environment of the area.

The action focuses on the central heating pipe network has access to the dismantling of coal-fired boiler units, still use coal-fired boiler heating key units of 18 coal quality, coal to electricity station uniform implementation of the 1001 residents of coal-fired heating boilers civilian electric boiler furnace demolition and safe usage, the main city of 39 sets of bath boiler operation of treatment facilities, boiler demolished nine agriculture-related enterprises from coal to gas and gas safety carried out a detailed examination. Unit 4 of the use of substandard coal, the filing be investigated according to law, for gas safety problems 9 agribusiness, notify the county Emergency Management Agency and the territorial towns to regulate the management of its duties, to further prevent security incidents from the source .

Use electric biggest steam boilerpany in industrial electric steam boilers for cooking food processing, printing and dyeing, pharmaceutical, clothing iron, road maintenance, to provide production to provide steam sterilization with steam, medical institutions, other enterprises and to provide heated water tank, hotels, bathrooms by domestic hot water. Washing Ironing industry: dry-cleaning machine, dryer, washing machine, dryer, ironing machine, iron, and other equipment for use. Food Machinery Industry: supporting tofu machine, steam boxes, cans sterilization, packaging machines, coating equipment, sealing machines, and other devices using Bio-chemical industry: a fermentation tank, reactor, sandwich pot, mixer, emulsifier and other equipment supporting the use of other industries :( oil, automobile) steam cleaning industry (hotels, dormitories, schools, mixing station) hot water supply, (bridges, railways) concrete curing, (casual beauty club) sauna, hot swap equipment.

Why boiler furnace exhaust gas temperature increases heat losses the heat loss is largest in a boiler, furnace 6% is generally fed to the heat, the exhaust gas temperature increasing every 12 ~ 15 ℃, heat losses to an increase of 0.5%. Therefore, the exhaust gas temperature is one of the most important indicators boiler operation. Here are a few reasons may cause the furnace exhaust gas temperature rise: (1) heating surface slagging, fouling. Whether waterwall slagging furnace fouling, or superheater, convection bank, and economizer preheater fouling are due to increased resistance measured smoke, heat deterioration of the cooling effect deteriorates the flue gas, resulting in increased exhaust gas temperature. (2) the excess air ratio is too large. Under normal circumstances, the furnace outlet increases as the excess air ratio of the exhaust gas temperature rises. After the excess air ratio increases, while the amount of smoke increases, the speed increase of smoke, heat strengthening of exiled, but less than the degree of increase in heat transfer gas volume increases more. It will be appreciated as the tobacco rate increased, the time to heat to the flue gas working fluid left the heating surface. (3) leakage factor is too large. Tail shaft furnace and boiler flue negative pressure leakage is inevitable, and provides a heating surface allowed leakage coefficient. When the coefficient of air leakage increases, the influence of the exhaust gas temperature and overfire air coefficient increases similarly. And the closer the leakage furnace, exhaust gas temperature raising effect on the greater. (4) water temperature. When the turbine load is low or high pressure splitting when the heater temperature of the boiler feedwater will decrease. Generally, when the water temperature rises, if the amount of fuel is maintained constant, the temperature difference decreases economizer, economizer heat absorption decreases the exhaust gas temperature rises. (5) the fuel moisture. The fuel in the flue gas to increase the amount of water increases, and therefore the exhaust gas temperature rises. (6) boiler load. Although the boiler load increases, the amount of smoke, the amount of steam to the water, the air amount increases in proportion, but since the furnace exit gas temperature is increased, so that the exhaust gas temperature rises. After the load is increased to increase the furnace outlet temperature, followed by convection heating surface temperature difference increases, an increase in heat absorption, the more so the convection heating surface, the smaller the impact load change of a boiler exhaust gas temperature. (7) The fuel species. When burning low calorific value gas, since the furnace temperature is lowered to reduce the radiation heat transfer in the furnace, the low calorific value gas in a non-combustible components, mainly N2, CO2, H2O more, the amount of flue gas increases, the exhaust gas temperature rise high. Pulverized after burning oil, although oil-fired furnace outlet when the excess air ratio than the coal is low, but the little ash fuel oil, and no larger soot particles, larger ash particles in the flue gas absent the cleaning action of surface heating, convection heating surface more polluting. So bad combustion, often black smoke boiler flue gas temperature. When the tail has means ash ball, since the tail cleaner, the exhaust gas temperature is slightly lower than the burning coal. (8) milling system operation. Bunker has a reservoir of closed milling system is concerned, when the pulverizing system is running, because a portion of the water in the fuel into the furnace, the furnace temperature is reduced and the amount of smoke increases, the leakage into the pulverizing system is running as the primary cold air air into the furnace, to reduce the amount of air flowing through the air preheater to the exhaust gas temperature rises. Conversely, when the exhaust gas temperature is reduced pulverizing system outage.

Oil-fired boiler work and preparation before purchase if necessary fuel boiler induced draft fan, this is a particular kind of boiler, and all of us concerned, but also need to have a comprehensive knowledge and understanding, so as to know how to correct and rational use of oil-fired boilers this a boiler at the same time to achieve the purpose, can also increase their expertise in this area. Whether to do some preparatory work before 1 oil-fired boilers to buy? Oil-fired boiler product before making the purchase, it is the need to do some preparation work. Moreover, this work has two purposes, first, the importance of this work reflects the product purchase, and second, to avoid the wrong choice appears. In the specific content of the work, first have a clear understanding of the environment and the requirements of the product, the second is some basic information to understand the product and production manufacturers, including product origin, specifications, size, performance and technical parameters, product quality and price and product service, in the process of considering these factors are indispensable to ensure accurate judgments and the correct choice. 2. Fuel different classification criteria boiler Are there different kinds? Oil-fired boiler, which is a specific kind of boiler, so, as with a normal boiler, at different classification criteria corresponding to different species, therefore, the answer to this question is yes. If the kind of fuel according to points, can be divided into two oil-fired boilers and boiler heavy gas oil boilers, diesel or gas oil refers to the kerosene, heavy oil is extracted by means gasoline or diesel oil as the rest of the heavy oil. In addition, the boiler according to purpose to points, can be divided into a fuel oil-fired boiler water boilers, hot water boiler fuel, heating fuel boilers, boiler and fuel oil bath and biggest steam boilerpany in industrial these. 3. The oil-fired boiler fuel consumption calculations it important? From a professional point of view, to calculate oil-fired boiler fuel consumption is very important work, and careless treatment can not be ignored, because if get the wrong result, it will affect the normal use of the boiler. In addition, we also need to know is that there is a corresponding formula, under normal circumstances the use of boilers, boiler output if different, then the boiler fuel consumption is not the same. 4. Does fuel boilers must have induced draft fan? There are requirements for the quality of its oil do? Whether fuel boilers must have induced draft fan, according to this aspect of professional presentation, the answer is not necessarily, because depends on whether the specific circumstances so require, if the amount of air supply and flue fuel ratio appropriate and clear then use the blower can be. This kind of boiler oil-fired boiler, its oil quality is not clearly defined requirements, but in the use, certainly requires better quality fuel, so as to ensure the boiler work properly.