Henan gas solid fuel boilers are long burning water level adjusting operation when the object is to ensure adjustment of water balance, i.e., equal to the amount of main steam to water, to prevent excessive fluctuations in the water level. Level is too low, it may cause the downcomer with gas, the circulating flow of water head pressure is reduced, the safety of the natural water cycle is reduced, if the gas boiler feedwater Henan interrupt continuous operation, it might appear in the tens of seconds "Griddle." Henan gas boiler water level is too high, water separation space height will result in reduced steam with water, steam quality deterioration (mechanical vapor carrying the increase will result in salt content), there will be serious when the bubble filled with water, resulting in a large number of steam with water, high salt content of the steam superheater severe fouling, resulting in over-temperature burst pipe wall, can also cause water hammer and steam turbine main steam pipe, the impact of safe and economic operation of the device. Also, keep the balance of water and evaporation, prevent water shortages (or full of water) accident. Boiler operation and regulating water flow according to the change of the load, uninterrupted by the water level of the water table supervision pot. Boiler water level should be kept at a normal water level line, and 50 to allow the fluctuations in a normal water line. In order to maintain the normal water level, the water level to be adjusted according to the load of Henan gas boiler. Henan gas boiler in the low load operation, the water level should be slightly higher than normal level, the load increases to prevent the water level drops too low; boiler high load operation, the water level should be slightly below the normal water level, the water level rises so as to reduce the load too high. In the run Henan gas boiler should pay to achieve a smooth, even, because of changes in water level will steam pressure, steam temperature fluctuate. Time and method of water supply should be appropriate. Water supply time interval is too large, too much time to the water, the steam pressure is difficult to stabilize; do not weaken the water supply when burned, which causes steam pressure drop.

Hazard scale steam solid fuel boilers are long burning steam boiler scale produced when using what harm it? Xiao Bian told you about hazards under the steam boiler scale today, hope can help to you. 1, waste of fuel, because the thermal conductivity decrease the thermal efficiency of the steam boiler scale ten times larger than the thermal conductivity of steel to the fractional number of times. Thus when the steam boiler scale junction, heat transfer performance of the steam boiler heating surface is deteriorated, fuel combustion heat is not released efficiently transferred to the boiler water, a large amount of heat is taken away by the flue gas, resulting in increased exhaust gas temperature, increase heat loss, reduce the thermal efficiency of the furnace. In this case, in order to ensure the parameters of steam boilers, adding more fuel would have to increase the temperature of the furnace and flue gas temperature, thus resulting in wasted fuel. It was estimated that the furnace has a heating surface junction 1mm thick scale, waste of fuel from about 3% to 5%. 2, the impact the safe operation of the steam boiler scale often generate high heat load heating surface. Scale due to the poor thermal conductivity, leading to greatly increased local temperature of the metal wall. When the temperature exceeds the allowable metal temperature can withstand, the metal creep due to overheating, decrease in strength, the working pressure in the boiler, a metal bulge will occur, and cracking of perforation, affect the safe operation. 3, the decrease of the steam boiler output scaling boiler, heat deterioration due to evaporation or to the rated nominal heat production, it is necessary to consume fuel. However, with the increase in scale thickness, and the area of ​​the grate furnace volume is constant, the fuel consumption is limited, the output of the furnace will be reduced. 4, fouling will reduce the life of the scale steam boiler heating surface shall be completely removed in order to ensure its safe operation. Whether manual, mechanical, or the use of cleaning chemicals will affect its service life. These are the steam boiler scale harm, in order to prevent the generation of scale, we can reduce the water flow rate, regular cleaning and other measures to reduce the harm of scale.

Expected by the end of this year, Jiangsu Province, the province will complete the ultra-low emissions below 100,000 kilowatts coal-fired units. It's Jiangsu Province, following more than 100,000 kilowatts ultra-low emission coal-fired units in 2017 renovation, energy-saving and environmentally friendly coal a "first in the country."

According to statistics, Jiangsu Province in energy consumption, accounting for over 60% of coal, which accounts for coal and coal consumption sticking. Industrial emissions of air pollution is the bulk, ultra-low emission power plants, clean coal is to enhance efficiency, promote air pollution control "top priority."

According to the deputy director of Jiangsu Provincial Development and Reform Commission Energy Bureau, Jiangsu Province coal units in the national energy conservation program first started, the fastest progress. In the coal transformation "mentioned standard extended surface" advancing, Jiangsu Province by the national requirements of more than 300,000 kilowatts stand-alone, single expanded to more than 100,000 kilowatts, 100,000 kilowatts this year covering the following units. In order to promote energy saving coal-fired power plant, Jiangsu Province, also the first start price subsidies, together with local award and subsidy, enterprise since the vote, five years invested a total of 23.4 billion yuan.

Price subsidies coupled with strict control of environmental protection, promote the province of large-scale coal-fired power plants, clean production. By the end of last year, Jiangsu Province, a total of 225 sets of 73.6 million kilowatts coal units to complete the environmental transformation. Combined with the transformation of coal to the end of last year, out of sync, Jiangsu Province, small thermal power units 2.95 million kilowatts.

Coal transformation of wide coverage, high standards, emissions dropped significantly. Emissions of coal dust, sulfur dioxide and nitrogen oxides three major pollutants, Jiangsu line monitoring mean values ​​of 2.3 mg / cubic meter, 18.5 mg / cubic meter and 35.5 mg / cubic meter, effective domestic optimal. Transformation, Jiangsu Province, to proceed with flue gas heat recovery, central heating, shutting down small thermal power, 25.7 million tons of standard coal last year to save.

Significantly reduce the amount of coal emissions at the same time, the province "Blue Sky index" every year. According to the Provincial Department of environment statistics, since 2013, the province PM2.5年均浓度连续 six years continued to decline, good days than from 60.3% in 2013, rising to 68% last year.

(3) selective non-catalytic reduction (SNCR, Selective Non-Catalytic Reduction), is mainly used for waste incineration plants and other medium and small solid fuel boilers are long burnings, mature technology, but its efficiency is lower than the SCR method; small investment, short construction period.