water tube coal fired hot water boiler

water tube coal fired hot water boiler

Boiler Description coal to gas resource structure due to the characteristics of China's coal resource structure was in the proportion of relatively large, coal-fired boiler is also a time position in the market significantly. But with the changes in the structure of resources in recent years, and Huanjingwuran situation, relying on natural gas-fired boiler advantage is gradually replacing coal-fired boiler, a new main market. The "coal to gas" is also known more and more people! What is called the "coal to gas boilers": boiler from coal to gas specifically refers to the transformation of coal-fired boilers to gas boilers, boiler in the boiler is the transformation of the industry, so the boiler from coal to gas should still belong to the boiler industry. Because now the national requirements for environmental protection, many places ban coal-fired, the emergence of a lot of coal to gas boilers. (Only changes the combustion mode) is changed from coal to gas boilers, combustion section is not, in this small series is not recommended to transform combustion boiler. For the following reasons: 1, boiler belongs to special equipment, before coal-fired boiler into gas-fired boilers, in need of rehabilitation procedures, and next year's annual cumbersome. 2, an internal structure of coal-fired boilers with different gas boiler, heating surface, the radiating surface are different, the thermal efficiency of the boiler is very different, changing gas fired boilers, the original efficiency is only 70% -80%, the utilization efficiency is greatly reduced , although the initial investment cost is low, but in the long run is not worth the cost. 3, gas boilers are environmentally friendly automatic series, automatic water, low pressure from the high stop, excellent safety performance is much coal-fired boilers can reduce labor input and annual maintenance overhaul costs.

Why supervisory inspection-free steam boiler steam boiler characteristics can exempt? According to the "Steam Boiler Safety Technology Supervisory Regulations" provides that the normal water level of boiler water volume less than 30L in the boiler does not belong to the scope of the surveillance. When the normal water level of boiler steam boiler water volume is only 27L, like installing a home water heater as safe. So steam boilers belong to exempt boilers. You can avoid the security of small steam boiler What are the benefits? 1, you can not build a separate boiler room, can be placed in the basement, roof and other places 2, do not have a full-time duty Boilermakers (conventional boiler requires certified fireman) 3, eliminating the need for a year dealing with government departments, burning more peace of mind coal steam boiler What are the advantages over conventional steam boiler? Coal-fired steam boiler, is lower than conventional coal-fired steam boiler safety running costs, fast start, no registration and annual inspection, firing five minutes produce steam. Coal-fired steam boilers suitable for use in what place? It can be used in hotels, factories, hospitals and other occasions. The hotel can be used as a steam boiler steam laundry places, canteens and other uses. As plant steam for a steam boiler may be used in the process. Steam boiler can be used as a hospital to disinfect hospital use. Free supervisory inspection characteristics steam boiler: The supervisory inspection-free steam boiler water volume is less than the normal water level 30L, within the exemption permits boiler use a range of countries that use the certificate without going through the boiler. Furnace is equipped with a built-in separator, to solve the problem with the water vapor, more to ensure the quality of design, high degree of automation, personalized steam, all programs are concentrated on a button, extraordinary fool fuzzy control, each operator convenience. Boiler operating system using automatic intelligent electronic control system for the automatic control of all operating states can glance. You can observe in the display to the boiler work state, state boiler water level, steam pressure state level, pump operation status, fault alarm status, allowing you to keep abreast of boiler operating conditions, use more confidence. Using high-quality components all piping and instrumentation connections are made of stainless steel or copper pipe connections, electrical appliances are the most well-known of West Germany Electric, safe and reliable, luxuriously equipped. Multi-chain security features. Products fitted with a boiler inspection by checking the safety valve, pressure controller overpressure protection against boiler due to excessive pressure caused by the explosion; as well as low level protection limit, the boiler will stop automatically in case the water supply is stopped to prevent the phenomenon of dry boiler electric heating element damage even lead to burnout. Leakage protection so that safety of operating personnel and equipment more secure, even when a short circuit caused by improper operation of the boiler, the boiler will automatically cut off the circuit if leakage current and timely protect the operator and control lines. Easy to install, easy to use products factory have passed strict debugging, users only need to connect the power supply and water, as long as the boiler to fill the fuel inside the boiler to enter the automatic running state, without complicated installation. Scientific design, beautiful appearance cabinet scientific design, internal design structure is reasonable, maintenance is extremely convenient. Boiler shell CNC CNC cutting and hemming a molding process, work fine; shell surface temperature after spray treatment, durable, aesthetically pleasing appearance. The main feature of the supervisory inspection-free steam boiler 1, for a wide range of environmental protection, in line with environmental requirements; 2, economy using the latest energy saving technology can save about 50% of the monthly cost of using highly efficient thermal insulation materials, heat loss is very low fuel savings; 3, having a water safety, overpressure, over temperature protection features, safe and reliable; 4, simple practical boiler structure, small size, easy installation and maintenance, long life; 5, convenience can select any number of automatic computer-based digital display phenotypic two kinds of control, easy to operate, less failure, easy to use; 6, adjustable load can be adjusted as desired within the rated range; 7, this series boiler has 0.4MPa (4 kg), 0.7MPa (7 Gongjin), 1.0MPa (10 kg) of three kinds of steam pressure, steam production from 30KW to 2160KW a total of 27 kinds of specifications models for users to choose according to the needs, can also be custom designed for specific users ; coal, oil, electric, gas steam boiler applications: washing ironing industry: dry-cleaning machine, dryer, washing machine, dryer, ironing machine, iron and other packaging equipment for use Machinery Industry: labeling machines, standard sets of supporting the use of Biological Chemical Industry: supporting a fermentation tank, reactor, sandwich pot, mixer, emulsifier and other equipment used in the food industry machinery: tofu machine, the steam box, sterilization tank, packing machine , coating equipment, sealing machine and other equipment for use in other industries :( oil, automobile) steam cleaning industry (hotels, dormitories, schools) steam or hot water supply, (bridges, railways) concrete curing and so on. Steam boiler steam moisture content too much harm.

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."

How to improve the energy efficiency of industrial boilers 1, focusing on the transformation of practicality (1) above to recover waste heat can be effectively used. For example: high temperature organic heat boiler flue gas, but the process does not require the production of steam and hot water, attention should be considered heated by flue gas waste heat recovery techniques combustion air. (2) improved gas boiler should focus on energy-saving technologies improve the automation level of combustion control, precise control of the combustion state. (3) Consider first the application of energy-saving technologies and sophisticated equipment. 2, considering the technical nature to further improve the thermal efficiency of industrial boilers, it is necessary to consider new energy-saving technologies and equipment. Advanced (1) energy conservation technology and equipment, difficult to implement. Such as: waste heat recovery heat exchanger and the new technology: heat pipe technology, the condensed waste heat recovery technology; new water treatment device: microbial fouling and electromagnetic processing techniques (e.g., hydraulics); combustion automatic control technology. (2) spraying pulverized coal combustion technology (stratified combustion mode and suspension-fired boilers) design, construction and operation of high demand management, oxyfuel technology, such as high temperature air combustion technologies require large investments. 3, forming a complete transformation handle (1) must be considered boiler energy saving, heat insulation of synchronization is complete, sealing, and improved methods of burning fuel adjustment, and the fuel air distribution system of the inverter, reduced nicotinamide tube improved resistance to treatment. (2) pay attention to clean the boiler heating surface, and providing technical improvements boiler water, slag, ash, etc., to ensure that the boiler has good heat transfer properties. (3) the necessary training for technical operations and daily management of energy-saving equipment.

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