Energy Saving Natural Circulation 6000Kg Coal Steam Boiler
It is reported that the atmosphere and do in Hebei Province recently issued issued a "coal-fired boiler upgrade Hebei three-year battle plan" (hereinafter referred to as "Plan"). "Plan" put forward, will continue to increase efforts to eliminate 35 tons of steam / hour and coal-fired boilers, as of 2020, the province's 35 steam tons / hour and the boiler "No Coal", while steaming retains 35 t / h coal-fired boiler and above the implementation of energy efficiency retrofits to mention environmental protection.
2017, Hebei cities (including Dingzhou, Xinji) built-up area for 35 steam tons / hour and coal-fired boilers, the county seat 10 steam tons / hour and coal-fired boilers basically completed "clear" work. 2018, the province plans to phase out a total of 6764 units 13466 tons of steam coal-fired boiler, stove and stove operating a small coal stove, have been eliminated as of September 35 steam tons / hour and coal-fired boilers 6141 Taiwan 12485 tons of steam.
Next, Hebei will focus on the implementation of nine key tasks:
First, actively promote central heating facilities, industrial parks and accelerate the elimination of coal-fired heating boilers, the implementation of "the big-generation small" and "a garden a furnace" governance program, organized industrial wasteheat special action.
Second, increase clean energy alternatives, optimize energy structure boiler. As of 2020, municipalities and districts and counties built-up area of straight pipe central heating and clean energy heating rate of 100%.
Third, increase the coal-fired boiler energy conservation and environmental protection to enhance the transformation efforts.
Fourth, increased pollutant emissions and coal quality management and control efforts, deepening the boiler control. For reservations of 35 steam tons / hour or more coal-fired boiler to install air pollution automatic monitoring facilities and networking with the provincial and municipal environmental protection department.
Fifth, to accelerate the application of new energy technologies, promote demonstration projects mature. Require municipalities to develop clean energy development plan, and carry out the heating boiler can too + + PV, geothermal pilot, accelerating wind power demonstration heating Zhangjiakou region, to promote biomass energy, gas, alcohol-based fuel, industrial waste heat, light hydrocarbon fuel and other types of energy.
Sixth, give prominence to coal-fired boilers "Gas", "electricity" management. Municipalities To plan, implementation of the "gas will change," "power given to change." Heating boilers complete transformation of all time ahead of the end of August, without access to gas, clean energy power light before shifting coal-fired heating boilers can not be removed.
Seven, to carry out comprehensive environmental remediation coal-fired boilers, the implementation of grid management systems.
Eight new boiler strict access, strict implementation of pollutants and reduce the amount of times the coal alternative system. By the end of 2018, the province's coal-fired boiler control in less than 110,000 tons of steam.
Nine, strict boiler exclusion criteria, norms and acceptance transformation.
Auxiliary means configuration of the auxiliary boiler apparatus comprising a boiler fuel supply means, air blowing means, the wind means, water supply means, means ash, dust removal device, instrumentation, valves and other automatic control device. Today small to introduce a boiler with auxiliary devices. A boiler fuel supply role is to store, transport, supply of the fuel. There are coal, to the media devices (mill, of mill, and coarse powder separator and lose powder duct), and supply means (for the fuel heater and the like), a gas supply device and the like. Air blowing means which effect a treasure ah blower and duct, the grinding media and air into the furnace through the air preheater apparatus. Blower apparatus, comprising a draft fan and the smokestack, speaking furnace flue gas to exclude air sent. Water supply means comprises a water tank, water supply pipes and water treatment equipment, boiler feed water away. In addition to ash means ash comprising artificial addition, other mechanical ash, ash in addition to water, in addition to the negative pressure pneumatic ash, soot blowers, and other field ash, ash from the boiler and out away. Dust removing device, which includes a variety of dust action of gravity, inertial force, centrifugal force, washing bar-type, sound wave, filtering, static electricity, etc., fly ash out of the boiler flue gas, to protect the environment. Instruments, automatic control devices and valves, including the role of pressure gauge, a thermometer, a water level gauge, the alarm level, the relief valve, water meter, steam flow meter, pressure meter, indicating the exhaust of carbon dioxide and other instruments, a steam valve, a valve, a check valve, like the valve discharge valve, and automatic detection, automatic protection, control and automatic adjustment and automatic computer control means. The boiler more safe, economical operation. These are the auxiliary device structure of the boiler, I believe you must have learned a lot of knowledge of it, I hope this helps you make better use of boiler equipment.
6 tons gas energy saving natural circulation 6000kg coal steam boiler steam pressure adjusting a boiler operation, must frequently monitor the pressure gauge indicated. To maintain stable steam pressure, boiler pressure must not exceed the design pressure. Second, increasing boiler load: Steam pressure decreased boiler load is increased, if the level is high at this time, the amount of water should be reduced to a water supply or suspend, the amount of coal and increase the air volume. Gradually increase the amount of water at the same time to strengthen the burning, keep the steam pressure and the water level is normal. Third, the boiler load reduction: the vapor pressure rises to reduce boiler load, if the level is high at this time, the amount of coal should be reduced and the air volume, reduced combustion. Then the appropriate water reduction or suspension of water supply to the water vapor pressure and stability in the nominal range. Then press the normal combustion and the amount of feed water 8 to adjust. If the actual water level within the boiler is low, to increase the amount of water should, until the water level returns to normal after the combustion and needs to be adjusted according to the water vapor pressure and load changes.
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.