In conventional boilers, the exhaust gas temperature is generally at about 140 deg.] C, or even higher, so that water produced during combustion of the fuel in a state of superheated water vapor in the flue gas, from the chimney with the flue gas loss. Traditional boiler thermal efficiency is generally only 85% to 91%. Condensed gas boiler, the exhaust gas temperature which is reduced to 40 ~ 70 ℃, full recovery of the sensible heat of the flue gas condensate and steam
Superheater tube boilers and boiler superheater its two operating state, if the squib phenomenon, then what specific reasons? And what is the dry and wet operation of the boiler? The main purpose of the two issues raised, in order to be a good and comprehensive solution, so we will be able to have a thorough understanding of, and at the same time, let's deepen their understanding of the boiler. Cause Analysis 1. Boiler Superheater tube. Boiler, if superheater appear squib phenomenon, its specific reasons, the analysis and summary boiler manufacturer box boiler, the conclusion is: One reason: superheater tubes, long-term operation in the over-temperature condition, even if overtemperature modest, but also the mechanical strength of the pipe material will be lowered, and so the creep speed, then there a thick bulging phenomenon, until the burst. Two reasons: the presence of foreign matter superheater tube, and a blocking phenomenon has occurred, so that the boiler combustion becomes unstable, so that the deterioration of the heat transfer pipe, the local temperature is too high, and further, the high temperature squib. Dry and dry-wet operation of the boiler 2. The boiler operation: this, in block boiler manufacturer boiler opinion, is that when the boiler load is above 35%, since the generated milk plant 10 bar steam boiler is larger than the flow rate of the water wall, such that the superheated steam flows through the steam trap, but this time there is no water in the steam separator, so called boiler runs dry. Wet boiler operation: For this, according to the boiler block boiler manufacturers introduced the dry run is the opposite. Which means that when the boiler load is less than 35%, less than the steam in the boiler water wall flow, then the steam separator in the water. Therefore, this condition is called wet operation of the boiler. In fact, these two states boiler can be interchangeable, and will be affected by burn rate. If the steam flow through the steam trap becomes superheated steam, together with the effect of the temperature controller, and an effective control of the boiler feedwater flow it is correct and can achieve a smooth transition of the state.
"Internet +" will lead boiler revolution in March 2015, "Internet +" for the first time in his government work report, causing various industries compete for the "Internet +" tide; March 2016, the government work report further "Internet + manufacturing ", pointed out the need to promote the development of the Internet and the integration of the manufacturing sector; in May 2016, the State Council issued" guidance on deepening the integration of manufacturing and development of the Internet, "and that the manufacturing sector is once again the implementation of the" Internet + "the main battlefield action .
Recently, Jinan City, Shandong Province People's Government issued and implemented the "2018 Beijing and Tianjin and the surrounding regions - 2019 autumn and winter tackling air pollution comprehensive management action plan" to inform the implementation of the program, requires the consolidation of ambient air quality improvement achievements, promote air quality continues to improve. On October 1, 2018 to March 31, March 2019, and all the city county fine particulate matter (of PM2.5) mean concentrations fell more than 2%, severe pollution and over several days up declining.
"Implementation plan" will be based on four construction industry, energy, transport and land use optimization adjustments to promote clean heating, public transferrin, enterprises mentioned standard upgrade, dust remediation, focusing on the consolidation of "scattered pollution" enterprise comprehensive rectification results, ruthless grasping diesel trucks, industrial furnaces and rectification of volatile organic compounds, heavy pollution to the implementation of the weather in autumn and winter peak load shifting production to strengthen joint prevention and control among regions, strengthen law enforcement supervision.
1, continued implementation of the total coal consumption control, strict implementation of national, provincial coal consumption reduction of about alternative work arrangements, and the development of alternatives seriously implement the Jinan City, the work reduction of coal consumption, coal consumption control tasks break down into individual counties, total coal consumption to achieve a steady decline. 2018, the city's total coal consumption control in less than 17.14 million tons.
2, effectively promote clean heating to the town (street) or the county as a unit as a whole. As of 2020, the city's pre-season heating living and improve the basic motivation for heating coal for alternative tasks, to develop a three-year implementation program to determine the annual task of governance. Taking into account the agricultural greenhouses, animal building bulk coal governance and to proceed with energy-saving buildings to improve energy efficiency. The county should proceed from reality, according to local conditions, reasonably determine the transformation of technical route, should the electric power, gas should the gas, the coal should be coal, should be hot is hot, and actively promote the use of solar thermal and centralized biomass utilization; adhere to highlight focus, give priority to urban life and motivation for heating gas demand, priority to promoting the urban bulk coal cleared. Gas will adhere to the reform, to change the electric set, on the basis of priority to the protection of residents in 2017 has started "coal to gas," "coal to electricity" project on gas electricity, gas and new year according to the actual supply and heating period the ability to reasonably determine the residents' coal to gas, "" coal to electricity "households; insist on legislation after the break, substitution of gas for coal to electricity instead of coal and other alternatives, in the implementation of air power is not the case, the original heating facilities will not be removed. In accordance with national, provincial requirements, to complete the clean winter heating construction tasks 33000.
3, complete replacement of the bulk coal areas to be designated as high-pollution fuel combustion zone ban in accordance with the provisions, shall not be burning coal for use again. Severely crack down on sales of low quality coal combustion, to ensure the quality of coal used in line with national and local coal quality standards.Free Chat
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