malaysia coconut shell fired steam boiler
Traps are generally installed in the boiler which position? Boiler traps role recently have several customers to inquire trap in which position the boiler, play what role do? The following content is explained and illustrated in Henan fast boiler thermal equipment technician made against these two issues. Steam case of condensation to form water is condensed into water to remain in the original equipment or system will cause operation steam pipe water hammer or vibration, we run do not want it condenses into water, but the system related equipment into steam when there are a warm-up process, during preheating, the steam temperature above ambient temperature or above system-related equipment in case of condensation will form water, we will promptly take it sparse, this is what we often say hydrophobic role of discharging the water trap is to avoid or reduce the vapor-liquid two-phase, rapid cooling and flushing equipment, causing damage, vibration or the like. Natural circulation oven set came in the early start can enhance water drum, water wall of water cycle, in order to facilitate the analysis can also be attributed to the ranks of water drainage. But generally not so called. Some feed water pump also turn on the water pump warm, this logic I should go water drainage. , The heating system circuit is formed, to ensure continuous heating capacity of the heating system. The heating pipes, air heater, the level of hydrophobic plus the like. The general effect of the trap in order to prevent excessive pressure level variations into the same vessel hydrophobic or hydrophobic anti-channeling cause vibrations, which facilitate a slow, free expansion, such as a collecting box provided different hydrophobic side platoon expansion furnace according to different pressure levels, machine high accident hydrophobic expansion plus side, the body hydrophobic expansion and the like. If the pressure level deviation is too large hydrophobic into the same container, the container is required to have a large enough expansion space, ensure that the pressure after the expansion is still lower than the lowest pressure when the maximum hydrophobic sparse amount of water. Drainage systems connected to put a lot of water pipe (which are mostly consumer-pressure drainage, the main purpose is not to warm the pipe so do not consider the issue of expansion), turn on the water should pay particular attention to these! In practical operation, the discharge should be considered connected to the same pressure level in the water pipe water drainage, avoiding anti-channeling drainage, in particular of a pressure-dissipating system is isolated from the other systems do maintenance measures eliminate pressure isolation to prevent channeling anti-scald soda !
About harm scale industrial boilers which harm scale industrial boilers which (1) the temperature of heating surface endanger safe operation of the boiler, shorten the life of the boiler water temperature of the furnace is generally higher than 6 ~ 10 ℃, but there are scale , leading to sharp increase in the temperature of the heating surface, will creep to overheating, increased corrosion of high temperature oxidation processes may cause metal deformation, bulge, or even rupture blasting; dirt layer acidic or alkaline substances, it is easy to corrode metal equipment safety, shorten its life, seriously affecting the stable operation of the boiler. (2) reducing the thermal efficiency, increased fuel consumption due to the thermal conductivity of only a few one-tenth scale steel, boiler heating surface scum resulting in reduced thermal efficiency, resulting in increased fuel usage. The data show that, when a surface junction raw 1mm scale, a 10% increase in fuel consumption; when the scale thickness of 3mm, about 25% increase in fuel consumption. Increased fuel consumption, will increase air pollution, which is the current energy conservation is contrary. (3) increased maintenance costs, environmental pollution if the boiler frequently produce large scale, in order to ensure its safe and stable operation of cost-effective, it would need to take timely and effective measures to deal with, or mechanical descaling, or chemical cleaning, a lot of manpower and resources will increase loss, produce a variety of charges. In particular, chemical cleaning, will produce a large basic or acidic wastewater, improper handling will cause serious environmental pollution.
Condensing boilers can be used in enterprises, hotels, military, railway stations, airports, factories, hospitals, schools and other occasions. Its main use features are: high thermal efficiency - more money; exhaust gas temperature is low - more environmentally friendly; output medium temperature - good steam / hot water quality; high safety factor - once an exception occurs immediately start the alarm system.
Recently, the National Energy Board, the Department of Ecology Environment issued "on the issuance of 2018, the provinces (autonomous regions and municipalities) of coal ultra-low emissions and energy-saving targets and tasks" (the "Notice"), called on all localities continued to do over coal low-emission and energy-saving, and promote the development of clean and efficient coal. Ultra-low emissions and to promote energy-saving work in the country has been more than two years, has been established to complete the task of transformation in the eastern provinces, the transformation of the focus shifted to the central and western regions, while the transformation of scope as technology advances and the increasing demand for policy gradually extended.
Under the "notice" requirement, this year nationwide, ultra-low emissions coal power reform objectives and tasks a total of 48.68 million kilowatts, energy-saving goal is to reach 53.905 million kilowatts. In 2016, the capacity of the units involved in the transformation of two to 254.36 million kilowatts, respectively, and 189.4 million kilowatts, good reform bear fruit.
President of the State Power Environmental Protection Research Institute Zhu France and China, said: "By the end of last year, a nationwide ultra-low emissions transformation target task completion rate has reached 71%," ultra-low emissions coal and transformation better, the eastern region has been basically completed, part central provinces ahead of the completion of the task of transformation.
In 2015, the former Ministry of Environmental Protection, the National Development and Reform Commission, the National Energy Board issued "the full implementation of ultra-low emissions and energy-saving programs of work-fired power plant", requires the completion of the eastern part of the overall transformation of ultra-low emissions before the end of 2017, the central region and strive in 2018 years basically completed, the completion of the western region in 2020. "2018 provinces (autonomous regions and municipalities) of coal ultra-low emissions and energy-saving task summary table" (hereinafter referred to as "transformation task list") shows that the eastern provinces have been basically completed the transformation of ultra-low emissions, not published this year transformation capacity unit task. But it is located in the Yangtze River Delta, Jiangsu Province, still issued 1.4 million kilowatts ultra-low emissions and energy-saving renovation target of 900,000 kilowatts.
Zhu France and China, said, "in accordance with the requirements of 2015, Jiangsu has completed the ultra-low emissions and energy-saving target in 2017. However, the new policy will be more units into the transformation range, Jiangsu this year, there is still the task of transformation. In June, the State Council issued a "winning blue sky battle three-year action plan" (hereinafter referred to as "three-year action plan"), required by the end of 2020, more than 65 tons of steam key areas of coal-fired boilers have completed ultra-low emissions and energy-saving. "
It is understood that "three-year action plan" prior to the implementation of energy-saving and environmental protection requirements only for the reconstruction of more than 300,000 kilowatts of conventional units, more than 100,000 kilowatts of power plant owned units. "According to the existing requirements, including Beijing and Tianjin and the surrounding areas, the Yangtze River Delta region and Fenwei plains, including the key areas, more than 65 tons of steam boilers are also included in the scope of the transformation will involve part of 100,000 kilowatts or less captive power plant units and industrial boilers. "Zhu France and China, said," "three-year action plan" in addition to the deadline of 2020, does not provide a specific timetable for the task. Next, the key areas are the provinces in accordance with the requirements of more units, boiler transformation. "
"Task of transformation" table displays, ultra-low emissions transformation capacity this year, mainly in the western region of Inner Mongolia, Shaanxi, Gansu, Xinjiang and so on. In the trend of ultra-low emissions overall speed of the transformation, central Shanxi, Anhui, Henan and other provinces in the region have been completed ahead of the transformation target ultra-low emissions, but energy-saving task still more arduous. Among them, Henan Province this year, energy-saving target capacity of 10.8 million kilowatts, Hunan has reached 9.995 million kilowatts.
Since the ultra-low emission transformation involves the emission of pollutants and other environmental problems, caused by the high social concern. In contrast, concern about energy-saving electric power mainly from the enterprises themselves. Zhu France and China, told reporters, on the one hand is the national energy saving policy requirements, on the other hand also in line with the needs of enterprises to reduce their own costs. At present coal prices continued to run high, coal companies operating pressure, reduce production costs even more urgent demand.
In 2014, the National Development and Reform Commission, the former Ministry of Environmental Protection, the National Energy Board issued "coal upgrading and transformation of energy saving action plan (2014-2020 years)", for energy-saving technology roadmap active coal-fired power units were enumerated, involving the master each link auxiliary equipment, environmental protection equipment and a total of 20 reform measures, in addition to "subcritical unit transformed into ultra (ultra) supercritical units", the rest of the technology have already matured.
In recent years, along with tighter environmental requirements, provide renovation and operation and maintenance services to the rapid development of environmental protection industry. In particular third-party environmental companies, with technical, cost and other advantages, occupy a certain share of power generation enterprise environmental transformation market. But a power industry experts said, is very difficult third-party independent companies to enter the field of environmental protection energy-saving power plant.
"Ultra-low emission increase in the transformation of the original system is new equipment, energy-saving and optimized for major transformation of existing equipment, and boiler plant, steam turbine plant than environmental protection enterprises to understand their own devices." The expert said, "Not only that as systems engineering, energy-efficient coal-fired units involved in the whole process of production, and plant operation economy, is closely related to security, not easily open to third-party companies. third-party companies to enter the energy-saving environmental protection than to enter the market face greater pressure."