low nitrogen gas fired boiler

low nitrogen gas fired boiler

A comprehensive national response to reduce air pollution, gradually increasing the intensity of environmental protection policies in recent years, Inner Mongolia has been committed Bayannaoer ban small coal-fired low nitrogen fired boilers to reduce environmental pollution and improve urban air quality of the environment. According to government-led, departmental interaction of the implementation of the principles, date, a total of 295 units Bayannao'er 10 tons of steam coal-fired boilers and all removed, and replace the use of cleaner natural gas, biomass as a boiler fuel, which after the boiler put into use, it can function properly, the monitoring indicators in line with "boiler air pollutant emission standards."

A total ban on coal-fired boilers is an important measure to improve the quality of atmospheric environment, after Bayannao'er implementation of the "Action Blue Sky" program, in accordance with the chimney fell to the ground, boilers shift, clear standards of raw materials, since 2013, the city's 10 tons of steam All of the following coal-fired boilers complete ban eliminated, replaced by natural gas, biomass, air and other clean energy. For natural gas pipeline network built-up area is not covered within the scope of the coal-fired boilers, an alternative implementation of electrical, solar air heat sources such as comprehensive transformation.

You must know the low nitrogen fired boiler energy problems (induced draft fan power consumption rate, steam consumption) draft fan causes problems 1.1 boiler flue dust and fouling, in particular air preheater fouling, resulting in increased resistance to smoke duct . 1.2 boiler flue, tail heating surface and dust leakage. 1.3 Leakage Rate large air preheater. 1.4 furnace excess air coefficient is too large. 1.5 unit load changes, run the adjustment is not timely, resulting in furnace pressure is too large. 1.6 unit load or low frequent starts and stops. 1.7 coal into the furnace worse, from the design value. 1.8 low efficiency filter. 1.9 draft fan blade badly worn, low operating efficiency. 1.10 fan outlet flue gas desulfurization big resistance. 1.11 soda boiler pipes for leaks. 2, 2.1 to 2.1.1 operational measures to solve the problem of the strict implementation of soot blowing system to prevent the heated area ash, blocking ash, flue gas system to reduce resistance. 2.1.2 holding the induced draft fan, the flue gas separator baffles and dampers in the fully open position. 2.1.3 The experiment showed combustion boiler, proper control of excess air in the furnace. 2.1.4 adjustment chamber negative pressure, air leakage reduction furnace and the flue. 2.2 routine maintenance and testing 2.2.1 induced draft fan performance test to determine the optimum operating point and efficient workspace. 2.2.2 boiler, air preheater, a flue, ESP and other system leakage inspection, process. 2.2.3 timely check processing chassis, shaft seal leakage. 2.3C / D repair, eliminating defects 2.3.1 down strict accordance with movement clearance adjusting fan. 2.3.2 induced draft fan blade defect action elimination hand vane opening adjustment. 2.3.3 Importers and induced draft fan baffle opening check. 2.3.4 duct tightness check process. 2.3.5 wave plate replacement air preheater, rinsed sector plate gap adjustment. 2.3.6 eliminate dust defects and improve collection efficiency. 2.3.7 clean flue gas desulfurization system, flue resistance is reduced. 2.3.8 eliminate soda boiler pipe leakage defects. 2.4A / B repair and transformation 2.4.1 Check and repair the fan blades, replace seriously damaged blades if necessary. 2.4.2 for energy saving fan efficiency below 75%. 2.4.3 The fan motor frequency transformation. 2.4.4 of the precipitator, if necessary, transform and improve collection efficiency.

How to improve the thermal oil low nitrogen fired boiler efficiency oil boiler thermal efficiency is a lot of users are taken into account, we believe that this issue is the direction of each used in the production of various types of oil boiler manufacturers have been in the study. Many users at the time of the oil furnace to operate, often in the actual production process, we found some new problems, but all the problems, the headache is higher oil boiler flue gas temperature, low thermal efficiency the phenomenon that a serious impact on our work, then how should we do to improve the thermal efficiency of it? need to understand this is to meet the low-temperature characteristics of the thermal oil comes as synthetic heat transfer oil. However, the vast majority of synthetic HTF complex biphenyls, benzene derivatives of both components, or a vapor of volatiles has strong carcinogenicity, it is strongly recommended to select customers conducting oil mineral oil products. Second, conducting oil products to meet the low temperature performance process, but also have a relatively high flash point required. In general, oil engineers suggest, low flash point not lower than the HTF opening 200 ℃. After a professional manufacturer of continuous research and improvement of its equipment, in order to improve its thermal efficiency was found to be increased oil boiler heating surface of the tail, say, air preheater and economizer. But when organic heat carrier furnace return temperature is high, you can not set the economizer, air preheater can only be set to alleviate the situation. So if the oil boiler and not other low-temperature heating system heat exchanger, then the only way to improve energy efficiency is adding air preheater. After adding air preheater can be a corresponding increase in the flow rate of heat-conducting oil, oil boiler in order to ensure safe, reliable and stable work, the thermal efficiency of the boiler plant with thermal oil will be a corresponding increase.

Gas-fired steam low nitrogen fired boiler abnormal situation, how should we deal with it? When we use gas steam boiler, failure or abnormal phenomena it is inevitable, but in order not to affect the normal use, in the event of a problem gas steam boiler to be timely processing solutions, then the face of all kinds of circumstances, we should how to handle it? Share some of the ways we deal with unusual circumstances. If only gas steam boiler circulating pump abnormalities, such as its current decreases, the pump outlet pressure back to zero, which indicates no oil pump is idle, it may be caused by oil vaporization. Yang identify the reasons therefore first vaporized measures; such as clogging of the filter circulating pump bypass opening evacuated immediately clean the filter; heat transfer fluid as a result of added aqueous or decomposed gases are not excluded in the system, should immediately open the vent an exhaust valve. Circulation pump pressure constant, the current increases and the flow drops, deterioration of the thermally conductive fluid, the viscosity increased, should be replaced or regenerated. New heat transfer fluid as a result of decomposition of aqueous or excluded gases in the system, should immediately open the vent valve of the exhaust gas. When the current is lower than normal circulation pump, the circulation pump efficiency is decreased, the flow rate decline may be heating pipes plug fouling, stainless steel chain should be cleaned. If the gas steam boiler before and after the filter increased in pressure, the pump inlet pressure drops, the filter may be stuck, the opening of the bypass, disassemble and clean the filter. In addition to its low furnace outlet temperature liquid phase heat carrier, mainly for lack of heat fouling problems, it is timely soot blowing. Gas steam boiler grate more common problem is stuck, there are reasons including breaking grate or the grate off loose pins; coal grate has stuck to metallic inclusions; arched grate; slag is sinking the tip of the grate stuck. In response to this phenomenon, the required reverse hand grate plate debris removal, replacement breaking grate after the start, then jammed as startup, stop the rotation of the reasons detailed inspection to resolve. But also to re-adjust the adjustment screw on both sides of the grate tension, if still does not work, we need to replace the sprocket.

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