2 ton gas hot water boiler

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.

Components of horizontal steam boiler production and life no matter what, horizontal steam boiler is that we have long been used, in short, now authors who gave you tell us about the components of horizontal steam boiler constructed. First, the blowing apparatus: the apparatus has a hair design of the inlet filter, through the operation of the motor when the air absorbing into the burner, so that the flame scaling. Second, the feed pump: water softening equipment back into the flue gas from the main pumping recovered, thereby energy away Emission horizontal steam generated in the boiler water to generate a pre-warmed effect. Third, the system of gas: gas comprising access burner, gas conditioning system. Fourth, the safety valve: design some pressure exceeds a preset value on their own relief. Fifth, he said horizontal electric steam boiler control system and a number of other components above, that is tantamount to the horizontal components of the steam boiler, if the capacity of the time, the boiler water detection operation of a predetermined difference value, the boiler is not switched, further get special attention. When production capacity of horizontal steam boiler is due for maintenance, repair and maintenance of the rigorous process for recording, only the operation of strict patient, persistent maintenance, before a deeper level to enhance production output, can not be exposed security problem.

In order to improve ambient air quality in the region, Linfen City, Shanxi Province with the actual situation, issued a notice "Linfen City in 2019 iron and steel, coking industry depth reduction plan". "Program" is mentioned, requiring all enterprises in the implementation of the transformation process of governance, compliance with the target, select advanced, mature, stable, and reliable control technology implementation of the transformation.

1, the end of June 2019, to complete the iron making and steel making ultra-low emissions transformation; the end of October 2019, the completion of the sintering head (pellet sintering) transformation of the ultra-low emissions.

Acceptance criteria: sintering (pellet) smoke particulate matter, sulfur dioxide, nitrogen oxide emissions in the reference oxygen concentration of not higher than 16% under the conditions (18%) of 10mg /, 35mg /, 50mg / m3; iron, other processes steelmaking emissions of particulate matter, sulfur dioxide, nitrogen oxides emission concentration is not higher than a standard 10mg / m3,50mg / m3,200mg / m3 of.

2, before the end of October 2019, the city's iron and steel enterprises to fully complete management and monitoring of fugitive emissions, fugitive emissions control, control, governance intelligent integration platform built

Acceptance criteria: transformation, steel companies outside the main source of fugitive emissions at 1 m, the particle concentration is less than 5mg / m3; the concentration of particulate matter emissions by organized collection after treatment is less than 10mg / m3.

3, the end of June 2019, to complete the coke pushing, coke ultra-low emissions of other transformation step; the end of October 2019, to complete the transformation of ultra-low emissions oven chimney.

Acceptance criteria: coke chimney particulate matter, sulfur dioxide, nitrogen oxide emissions in the reference oxygen concentration of not higher than 10mg / m3,30mg / m3,130mg / m3 under the conditions of 8%; coke oven coal, coke pushing step particulate matter emission is not higher than a standard concentration of 10mg / m3 of.

4, before the end of October 2019, the city's coking enterprises fully completed fugitive emission control and monitoring, fugitive emissions control, control, governance intelligent integration platform.

Acceptance criteria: transformation, mainly coking fugitive emission sources outside 1 m, the particle concentration is less than 5mg / m3; the concentration of particulate matter emissions by organized collection after treatment is less than 10mg / m3.

The main problems of autonomous decentralized boiler heating mode: 1, "two small" boiler room that is small-scale (10,000 m- for the following boilers 60%), small boiler capacity (single boiler average capacity of only 2 tons / hour). "Two low", i.e. the boiler load is low, the thermal efficiency is low. Calculated heat index 70W / m =, 0.7KW (i.e. 1t / n) for 10000m =, in fact, only for 4000m =, less than half, in the "Mara car" low load operation. Thermal efficiency is naturally low, generally only reach 50-60% oC "two can" That is more than the energy consumption, the existing multi-intermittent heating (burning six hours every day and night, stopping six hours, repeated twice). In the current institutional heating intermittent heating accounted for 82%, only 18% of continuous heating. 2, boiler room hire older workers and the burning of a modern boiler during operation merely by virtue of the experience "the sky light a fire," there is no scientific basis for heating, that is, how many points you cold, warm day less burning point, which is very difficult to achieve the purpose of heating and energy requirements. 3, the heating system is unreasonable, due to some historical reasons causing heating in the system has inherent missing, and in the intermittent heating is due to habits die hard so the resulting decline in the quality of heating also a waste of energy. 4, which is related to the owners and the quality of that set out secretly put a hot water tank, can lead to heat loss, water loss occurs, really makes the heating unit is really a headache, which cause heating problems. 5, since the local heating technology of high and low level, so that in the heating process, the heating requirements for the simple pursuit of the distal end of the owner excessively coal temperature of the heating water, resulting in overheating proximal end, a distal end of the warm unbalance, or warm proximal distal cold conditions, which resulted in a waste of energy, will not help solve the problem. 6, the boiler disrepair, will take place at the junction of the pipeline corrosion, fouling and even the phenomenon is really due to the HVAC heating during water treatment errors caused by, resulting in fouling of the boiler heating surface, or Since the agent is such that the boiler ash surface to form grime, which is management problems. 7, the high heat load design makes enormous waste in financial resources, but also makes the device parameter selection is also too large, the most important thing is a waste of energy. 8, due to improper selection of the boiler supply pump, such that the heat medium low boiler room parameters, the performance of the boiler is low lift, low thermal conductivity, insufficient heating vicious circle. 9, due to the design of overkill situation arise, ie, a single heating boiler can solve the problem, but using a more common heating boiler, resulting in low thermal efficiency of large coal consumption and generate unreasonable conditions. 10 vertical imbalance, if indoor heating system will be conducive to eliminating the balance of water resistance, which requires the designer to identify line) inputs the number of circulating pump is too large, such a large pump flow, low return temperatures, generally in 25 degree. This will increase electricity consumption. 11, about the nature of different heating buildings, commercial buildings and residential buildings if the use of a heating system is the same, then since the days of the commercial building heating requirements of large, large civil construction heating at night, if you can not time-heating, is bound to cause waste of energy. 12, single-tube heating system installed can not be achieved thermostatic valve on the radiator, but now a lot of indoor heating systems or belong to single-tube system, which is not conducive to long-term development. 161, why gas hot water heating boiler heating problems occur each year to slow the heating time, a gas boiler heating the user of the problem in many areas of heating will slow, but the problem is often not the fault based on the boiler itself. In this regard, today we elaborate on the reasons for this phenomenon. 1, because the use of gas-fired boiler heating, after carrying out the heating boiler ignition, but also need to go through the oven, cool-running, heat exchangers and other process, so as to make heating gradually warming. After the gas 2 ton hot water boiler heating during ignition, the oven is ready to work early each year heating must be carried out, a process that takes about 3-5 days to complete. 2, the use of the process, gas hot water boiler also need to go through the process of heat transfer, the temperature will gradually rise. Gas heating boiler heat exchange process is mainly water cycle process, stand out from the hot water not flow directly to the residents of the home heating network, but need heat exchanger unit to transfer heat energy in the hot water heating plant to the residents of the home in the circulating pipe network. 3, starting at the initial stage of the heating boiler, water temperatures of the respective heating stations is not very high, coupled with the complex structure of the network, the gas hot water boiler heating hot water heat exchanger is a process, especially in the end of the pipe network user, heat transfer process will be a little longer time.

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