12 mw coal fired hot water szl boiler
In promoting energy conservation work, many of our cities have regulations limiting the city center of coal-fired industrial 12 mw coal fired hot water szl boilers, requires the removal of small coal-fired boilers, replaced by large-scale coal-fired central heating boiler cogeneration or fuel gas-fired boiler, which because the fuel gas-fired industrial boilers has the following obvious advantages of energy saving. 1) high thermal efficiency of the boiler. Average operating coal-fired industrial boiler thermal efficiency of only 60% to 65%, the lower the efficiency of the boiler capacity is smaller; industrial boiler fuel gas thermal efficiency is generally 80% to 85%, the thermal efficiency of the different capacity of the boiler is not very different, industrial boilers Automatic fuel gas thermal efficiency as high as 93% to 95%. See the combustion efficiency, combustion efficiency of coal-fired industrial boilers average less than 80%, the average industrial boiler fuel gas combustion efficiency of more than 95%, combustion efficiency of most industrial boilers Automatic fuel gas up to 98% to 99% (considering the flue gas condensate after the recovery of latent heat). 2) low energy consumption. Fuel gas combustion boiler generally use a slightly positive pressure, just a fan, no dust, coal, slag removal equipment, running less than half the power consumption of coal-fired boilers; small industrial boilers frequent starts and stops, since the fuel gas-fired boiler stop convenience , that is shutdown completely stopped fuel consumption, unlike coal-fired boiler shutdown device still consumes a certain amount of fuel. 3) Low fuel transportation energy consumption. Noncombustible ash coal and water 30% to 40%, ash after burning and 30% to 40% by weight of coal, half of the group receives only the oil and gas of low calorific value, coupled to the fuel conduit and gas transport, with the transport of fuel oil calorific value of coal and ash transport energy less than energy consumption 1 / 4.4) and steel boiler for producing low energy consumption. Producing fuel gas boiler steel consumption is only 40% to 60% with coal-fired boiler capacity. 5) fewer pollutant emissions. Coal contains a large amount of incombustible components, combustion ash and unburnt coal dust become, the major sources of air; and a coal ash transport, storage, and in particular the field of coal ash open field dust pollution caused by the ground; Dust , slag would cause water pollution. In general, at the same furnace heat release, smoke emission was about 11 times as coal fuel, is about 500 times the gas; of SO2 emissions from coal burning is about 3 times the fuel, gas 4000 times ; about the NOx emissions from coal burning of 3 and 4 times the fuel gas. It is estimated that the greenhouse gas emissions - a coal-fired industrial boilers of the same capacity when the CO2 emission light diesel fuel is about 1.3 times, 1.5 to 1.8 times the combustion of natural gas, city gas twice or more the burning.
Risk factors for gas steam 12 mw coal fired hot water szl boiler steam boiler gas boiler risk factors get in the industrial field has been widely used. However, the safety of heat transfer oil boiler has been neglected. Safety heat oil boiler is not only related to the normal operation of the plant, also related to the safety and efficiency of the staff of the enterprise. security issues heat transfer oil boiler should be aroused widespread concern in the community, its vital security issues. pot body portion and a body portion of the furnace for gas-fired boiler, the occurrence of physical experience pot explosion. for liquid boiler, the boiler combustion flame in the furnace section, if the boiler burning coal, there will be a burning fire, gas and fuel boiler chemical explosion. gas boiler is a highly dangerous material having high temperature, high pressure, flammable, explosive and other characteristics. in practice, these reasons, we could cause some problems negligence or illegal operation, so inevitably lay hidden dangers. first, you must ensure that safety heat transfer oil boiler. in use of the device, the device needs to be checked regularly to ensure that the heat transfer oil boiler heating system in good shape , The strength of the wall of the pressure equipment and devices to check that there is no problem; Second, employees must strictly follow the instructions Due to the special nature of the gas steam boiler, inflammable and explosive materials pose a security risk, the operator must be trained. familiar with the device structure, operating strictly in accordance with the articles of association; third, to ensure that the gas does not mix with water vapor gas steam can not be mixed with low-boiling substances and explosive substances, otherwise the consequences could be disastrous.
Recently, in Hebei (Shijiazhuang, Tangshan, Handan, Xingtai, Baoding, Cangzhou, Langfang, Hengshui, Taiyuan), Shanxi (Yangquan, Changzhi, Jincheng), Shandong (Jinan, Zibo, Jining, Texas, Liaocheng, Binzhou, Heze ), Henan Province (Zhengzhou, Kaifeng, Anyang, Hebi, Xinxiang, Jiaozuo, Puyang) and other municipal people's government, security male New District management Committee, Dingzhou, Xinji, Jiyuan City people's government and the China National petroleum Group Co., Ltd., China petroleum and Chemical Group Corporation, China national Offshore oil Group Co., Ltd., State grid Co., Ltd., China Railway jointly issued on the issuance - notice "2018 in Beijing, Tianjin and the surrounding areas in 2019 autumn and winter tackling air pollution comprehensive management action plan" of.
The following are the provisions on the rectification of energy.
Setting goals: adhere to the principle of maintaining stability in the consolidation of ambient air quality improvement achievements, promote air quality continues to improve. Fully completed to improve air quality objectives 2018; Oct. 1, 2018 to March 31, 2019, (of PM2.5) Jingjinji average concentration of fine particles and the surrounding area fell about 3%, and more severe pollution days year reduced by about 3%. The main embodiment of the above-mentioned range is "26 + 2" city.
Execution method: to promote clean heating, iron revolution, transformation of provincial enterprises mentioned standard, focusing on the consolidation of comprehensive "scattered pollution" enterprise rectification results, pay close attention to diesel trains, industrial furnaces and volatile organic compounds (VOSc) special rectification, strengthening regional joint prevention and control, to effectively deal with heavy pollution weather, strict supervision and accountability, to further promote the comprehensive management of air pollution in autumn and winter tackling behavior.
First, strictly control the "two high" industry capacity. Before the end of December 2018 to complete the delineation of ecological protection red line. At the same time, increase the iron and steel, coking, building materials industry production capacity out and Yajian efforts to be included in the capacity of iron and steel enterprises, supporting the need to also sign sintering, coke oven, blast furnace and other equipment. 2018, steel production in Hebei Yajian can withdraw 10 million tons, 2.25 million tons in Shanxi Yajian quit, Shandong Province Yajian raised 3.55 million tons. Ensuring electricity, heat stable supply basis, 38 out of the task a total of 2.77 million kilowatts of coal-fired units of small thermal power units in the region.
Second, to deepen industrial pollution control. Since October 2018 1 May, the strict implementation of thermal power, steel, petrochemical, nonferrous metals (excluding aluminum), cement industry, industrial boilers and air pollutant emission limits in particular, to promote pollution control facilities upgrading in key industries. Continue to promote the industrial enterprises fugitive emissions control, under the conditions of safe production license, the implementation of closed storage, custody transfer, collection system, the end of December 2018 basically completed.
Third, effectively promote clean heating. The pooling of resources and vigorously promote the coal for governance, the country should be in accordance with the pre-heating period in 2020 basically completed the life and motivations of heating coal for alternative tasks required plains, to develop a three-year implementation program to determine the annual task of governance, both agricultural greenhouses, animal building, etc. bulk coal governance, promote energy-saving buildings synchronization, improve energy efficiency.
According to the country report, before the end of October 2018, "26 + 2" cities to complete the bulk coal substitution 3.62 million. Among them, Beijing replace 150,000, Plains basically bulk coal "cleared"; Tianjin replace 190,000, and strive to the end of October 2019, the basic completion of coal for alternative work; Hebei replace 1.74 million, and strive to 2019 basically completed before the end of October to the south of Beijing, bulk coal substitute work north of Shijiazhuang City; Shanxi replace 280 000, 450 000, Shandong Province, alternative, Henan replace 810,000. Around the township or county as a unit overall progress, complete replacement of bulk coal regions, and adopt comprehensive measures to prevent bulk coal burning complex.
Fourth, to carry out comprehensive improvement of the boiler. According to the law to increase the small coal-fired boilers in accordance with regulations (including tea furnace, operating a stove, grain storage and drying equipment, coal-fired facilities) elimination efforts.
Before the end of December 2018, Beijing, Tianjin, Hebei (city) basically eliminated 35 tons of steam per hour coal-fired boilers; Shanxi, Shandong, Henan eliminated 10 tons of steam per hour and coal-fired boilers, urban area basically eliminated 35 tons of steam per hour at coal-fired boilers.
Before the end of October 2018, Tianjin, Hebei, Shandong, Hebei (city) basically completed 65 tons of steam per hour and above ultra-low emission coal-fired boilers transformation, to achieve ultra-low-emission coal-fired power plant level. Biomass boilers should be dedicated boiler, coal and other prohibited blended with other fuels, efficient dust bags and other ancillary facilities. Actively promote the urban area of biomass boilers ultra-low emissions transformation.
Accelerate the transformation of low nitrogen gas-fired boilers, in principle, after the transformation of Danyang outdoor emission concentration is not higher than 50 mg / cubic meter, before the end of October 2018, Beijing basically completed the task of transformation of low nitrogen gas boiler; Tianjin complete the transformation of 222 units, 5908 tons of steam; Hebei Province, completed 353 units, 8028 tons of steam; Shanxi Province, completed 17 sets of 100 tons of steam; Shandong Province, completed 182 units, 409 tons of steam; Henan Province, and strive to complete 278 units, 1450 tons of steam.
Fifth, speed up clean energy alternatives. Of coal, petroleum coke, residual oil, heavy oil as the fuel of a heating furnace, heat treatment furnace, a drying furnace (kiln), and accelerate the use of clean energy and the use of plant waste heat, thermal power plants and the like instead.
Before the end of December 2018, the basic ban coal-fired stove, the iron and steel industry, coal-fired heating boilers; nonferrous metals industry basically out of coal-fired kilns, coal-fired reverberatory furnace, lead melting pots and pans electrical lead with coal as a fuel; basically eliminated coal-fired cogeneration heating the heating pipe network coverage, drying furnace (kiln); blast furnace gas, coke oven gas desulfurization transformation embodiment, the gas hydrogen sulfide concentration of less than 20 mg / m; diameter vigorously eliminate hearth 3 meters fuels gas furnace; industrial park focused on the use of gas stoves, they will not have to switch to natural conditions, should build a unified clean coal gas central principle. Prohibition blended sulfur petroleum coke.
90 t/h coal fired circulation fluidized bed 12 mw coal fired hot water szl boiler is a natural circulation water tube boiler with double cross drums. Fuel is sent to the furnace from stoker and it is mixed with air from equal pressure air chamber, the flow gas produced from it burned goes upside into horizontal cyclone separator.