dzl chain grate coal steam boiler
Due to increase market demand for air conditioning, we increased the number of production lines, faced with the urgent need of a dzl chain grate coal steam boiler problems. Emergence of fast boiler is time for us to solve this problem. From the start of contract manufacturing to transportation to our company for installation and operation, Fang fast only 35 days to solve our urgent needs. --customer feedback
The method of adjusting the temperature of the superheated steam heating stove have? The method of adjusting the temperature of the superheated steam heating stove have? DC boiler steam temperature is mainly adjusted by adjusting the quantity of fuel to water. In actual operation, because the efficiency of boiler feed water and fuel heat enthalpy (depends on the water temperature) and the like will change, so the actual boiler operation to ensure the water-fuel ratio of the exact value is not easy. Coal-fired furnace will fluctuate because of the amount of coal and the amount of fuel due to the steam temperature. So, except DC boiler fuel to water ratio as the coarse adjustment means, but also must be used as a method of spray desuperheater means of fine-tuning adjustment. There is also some boiler flue gas recirculation, dampers and methods of the swing center of the flame as an auxiliary adjusting device.
What are the indicators of factors affecting the efficiency of the dzl chain grate coal steam boiler Shandong? State basically in full swing during the move from coal to natural gas, hot water boiler with greatly minus the fine dust contamination, together with nitrogen oxides and other harmful gas emissions have been manipulated. Power is an important goal of measuring target hot water boiler, give you a look behind the cause of a direct impact on several hot water boiler power targets. By examining the relevant departments, and hot water boilers consume more important from these two local: the burning air-fuel ratio unqualified and heat loss. Possible to decrease heat loss can be recycled at the end of the formation of the latent heat of flue gas hot water boiler assembly, or with more kinds of class condensing boiler. Burning fuel ratio unqualified inappropriate Summary: General hot water boiler according ejector incinerator machine, causing air-fuel ratio can not be flexibly adjusted. 70% of the hot water boiler is a mechanical blower according burning machine, leading to substandard fuel ratio has the following several reasons: the more important fuel ratio failure probability can be divided into two types: When oxygen is overrun, there will not be excessive cold air is heat, hot water boiler power lead to the use of improved hot water boiler output target weakened; when oxygen is non-compliant, there will be insufficient burning phenomenon, showing a hot water boiler output target weakened. Shandong gas boiler steam boiler talked about how sewage? (1) inside open blowdown valve; (2) gradually open the blowdown valve external to warm up and sewage pipes; (3) an external switch repeatedly discharge water valve, slow flush pan scale , so that as the scale is discharged; (4) locking the inner blowdown valve, between these two discharge water storage water drain valve; (5) locking the outer blowdown valve, sewage terminated. When the people usually use gas steam boiler, power outage situation is obviously occurs when there is, admittedly now very small probability of occurrence of a power outage, What, then the people can not ignore this kind of situation may occur. The author taught the people, process knowledge this type of situation from occurring. First, after the power outage, the total mass to quickly lock steam boiler gas valve, this kind of boiler is to avoid the effect of leaking. Second, the next step is to lock the main switch valve with various natural gas steam boiler circuit. Third, locking gas steam boiler slag coherent various water discharge valve block, otherwise will probably cause additional problems of a coherent gas steam boiler. Fourth, to lock the various air intake valve deaerator. Fifth, the above outline done, in accordance with the order of daily occurrence to stop using the shutdown to manipulate, and verify that the volume of water in the furnace, gas and other energy corresponding to the description. Power outages may now be able to basically be able to say that very little gas steam generating boiler work, What, then public still can not completely avoid this kind of situation, which also requires manipulation of the masses of standard rules of this kind of situation occurred after carefully , as if such a situation occurs, etc. without question.
What is the principle of the boiler? No matter how much the tonnage, the boiler works basically the same. Role of the boiler fuel chemical energy is converted into thermal energy, heating and heat inside the pot with water to become superheated steam having a mass and a sufficient amount (steam temperature, steam pressure) of the steam turbine for use. Now the power plant boiler capacity, high parameters, technical complexity, high levels of mechanization and automation, the main fuel is coal, and coal prior to combustion of pulverized coal first made, and then into the boiler combustion heat release in the furnace. Broadly speaking, the work process is the main boiler fuel combustion, heat transfer, vaporization and heating of the water with the superheated steam and the like. The entire boiler boiler composed of two parts and auxiliary equipment. Boiler: boiler body is the main part of the boiler equipment, is composed of two parts, "pot" and "furnace" composition. "Pot" is the soda system which main task is to attract the heat receiving fuel discharged, the water is heated, evaporated and finally becomes superheated steam having certain parameters. It consists economizer, the drum, the downcomer, the header, water wall, superheater and reheater connecting pipes and other equipment and valves. 1) economizer. Vertically positioned rear of the boiler flue, the use of flue gas waste heat boiler feed water, reducing the exhaust gas temperature, increase boiler efficiency, fuel economy (2) drum. At the top of the boiler, it is a cylindrical pressure vessel, which is under water, the upper portion of the steam is that it accepts the economizer runoff, while the downcomer composed header, Wall water circulation circuit. Wall water absorbs heat generated in the soda mixture was collected in the drum, conveyed by the saturated steam to the superheater steam-water separator (3) downcomer. Water supply pipe water wall, the effect of which is introduced into the water in the steam drum to the lower header redistribution respective waterwall tubes. Dispersion in small diameter and the large diameter downcomers Downcomer two kinds. Small diameter tubular small diameter drops, the water cycle of negative (4) waterwall lower header. The main role of the header is a mass pooled or working fluid through the header to the header redistributed through other conduits. A water wall is thicker lower header tube closed at both ends, its role is connected to the downcomer and the water-cooled wall, so as to function together, mixing, redistribution effect working medium (5) water wall. At the furnace around its main task is to absorb radiant heat of the oven, to evaporate water, which is the main heating surface modern boilers, while protecting the furnace wall (6) superheater. Its role is to drum saturated steam into superheated steam on heating (7) having a predetermined temperature reheater. Its role is done in the steam turbine power section is heated up again, and then continue to work in the steam turbine. "Furnace" is the combustion system, its task is to make the fuel burn in a good furnace, heat. It consists of the furnace, the burner, ignition means, air preheater, the smoke duct and the furnace wall, frame and other components. (1) furnace. It is transferred from the furnace wall and into the water wall for fuel combustion, the fuel combustion in suspension, the release of large amounts of heat within the space. (2) burners. Located on the furnace walls or corners, its role is the fuel and air injected into the furnace at a constant speed, so that it can be well mixed in a furnace in order to ensure timely ignition and rapid and complete fuel combustion. DC sub-burner and swirl burner two basic types. (3) air preheater. Located in the boiler backpass, whose role is to use waste heat of flue gas to heat the fuel required for the combustion air, exhaust gas temperature can be further reduced not only, but also for strengthening the furnace combustion, improve the economy of combustion, pulverized coal drying and conveying is advantageous of. Boiler efficiency can be increased by 2%. And rotary two kinds of charge. (4) smoke duct. From the furnace wall is a pipe, the pipe heating surface and the portion of the tube wall and other components of the package, for guiding the flow of flue gas through the heat exchanger and the respective heating surface, and is divided into horizontal flue backpass. Auxiliary ventilation apparatus comprises auxiliary equipment (delivery, induced draft fan), a fuel transportation equipment, milling system, in addition to ash and dust removal equipment, desulfurization equipment.