cost of gas steam boiler

How to observe whether cost of steam boiler is short of water and how to deal with itSteam boiler is a kind of energy conversion equipment. The energy input to the boiler is chemical energy in fuel, electric energy, heat energy of high temperature flue gas and so on. After boiler conversion, steam, high temperature water or organic heat carrier with certain heat energy is outputted out. Water level below the minimum safe water level, or invisible water level, water table glass tube (plate) appears white. The two-color water level meter shows all the gas-phase indication colors. Low water level alarm signals occur in high and low water level alarms. Low water level interlock device, water level below the specified value should stop the operation of fan, induced fan, grate reducer motor. There is also a sharp rise in superheater steam temperature above the normal outlet Steam temperature. The exhaust temperature of the boiler rises. The feed water flow rate is smaller than the steam flow rate, if the furnace tube or coal economizer tube rupture cause water shortage, the opposite phenomenon will occur. When the water shortage is serious, you can smell the scorching smell. When water shortage is serious, red water wall tube can be seen from the furnace door. When the water shortage is severe, the furnace tube may break, and a burst can be heard, steam and smoke will be ejected from the furnace door and the fire door. By calling water; for severe water shortage, it is necessary to stop the furnace urgently, and blindly feed water to the boiler. Reduce fuel, blast, draw wind, and supply water slowly when water is classified as a slight water shortage.

Natural gas fired boiler is an inevitable trend of biomass transformation of straw pellet machine wood biomass combustion boilers has become an inevitable trend, as people's environmental awareness is gradually improving, countries and relevant departments of environmental protection and energy conservation incentives gradually introduced, burning reconstruction of coal boiler to a biomass fired boiler has become an inevitable trend. It is reported that wood biomass straw pellet production line capable of dispersing straw, wood and other raw materials processed into biomass burning particles, biomass fuel boilers provide a rich fuel, thus contributing to the transformation of enterprises biomass combustion boilers. Due to the strong state support, biomass burning particles as an alternative to coal, it has become China's fourth largest energy. British co-promote the use of wood biomass straw particle machine production lines, the production of biomass burning particles is greatly improved, greatly facilitate the process of enterprise biomass burning boiler in China. The increase in coal-fired boiler flue gas heat recovery steam recovery and necessary, and grate and transform a simple drum cited the wind, it can become a biomass wood pellet machine straw biomass pellet fuel biomass combustion boilers. While coal-fired boiler will increase business costs, but in the long run, the interests of biomass fuel boiler to the enterprise is immeasurable. With the contraction of the national policy on coal mining, the market price of coal is gradually rising. Biomass, straw wood pellet machine sufficient feedstock biomass particles, low processing costs, the use of biomass boilers, direct year savings of 5-10% in fuel costs. It is understood that use coal-fired boiler, the desulfurization necessary intervals, the biomass particles fuel sulfur content is extremely low. This complete abolition boiler desulfurization costs, reduce operating costs. Biomass fuel fired boilers can be exempt costs 80 yuan / ton; subsidies can help apply alternative fuel fired $ 200 / ton (NDRC); Also, according to the case of application of various energy saving MEP technological sector, the Ministry and other subsidies; where if a higher corporate income tax, then the application of biomass wood pellet machine straw biomass fuel particles can win policy tax shelters.

Low NOx emission combustion boiler technology a boiler combustion boiler hypoxic hypoxia NOX emissions from combustion is the easiest way to control. And a combustion burner system does not need to make any changes, only control air flow into the furnace in operation, pulverized coal combustion process as close to the theoretical combustion air amount. Low oxygen combustion scheme can reduce NOX emissions by 20% to 30%. The program practical application subject to conditions. Low oxygen furnace, will increase the amount of unburned carbon, and more difficult for the flame of burning coal more obvious; Further, the CO concentration is also increased so that smoke, which will cause decreased boiler efficiency. Another problem is that for certain boilers, hypoxia causes the main combustion steam or reheat steam temperature is low. The burning coal to immediately, boiler efficiency and reduce the magnitude of steam temperature and other properties to determine the appropriate control value of flue gas oxygen furnace outlet (at or economizer) the specific embodiments. Second, air staged combustion technique combustion air into a plurality of strands, it is gradually mixed and pulverized coal combustion, so you can see the local area to reduce the air-fuel ratio, and the thermal decomposition of coal in the ignition phase, due to hypoxia, and thus the nitrogen oxide generation is suppressed. Air classification may be implemented within the combustor, the boiler can be completed within. 85% of the amount of air required for complete combustion is introduced to the main burner, the main burner combustion zone is insufficient oxygen for the fuel-rich conditions. Due to insufficient amount of oxygen, the flame temperature is low, the amount of nitrogen oxides to less generation of fuel nitrogen intermediates (e.g., NCH, NH3, etc.) will therefore not be oxidized NOX. Meanwhile, it has been possible to further reducing NOX generated in a reducing atmosphere to molecular nitrogen (N2 of), as a result reduces NOX emissions. An upper portion of the top floor is provided Ge overfire air (of OFA) spout into the furnace through which about 15% of the rest of the air, to avoid the high temperature flame zone, it is also possible to burn unburned carbon particles, to complete the combustion process.

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