How natural circulation boiler form a rigid beam and what role? Knowledge and understanding of the boiler, the following forms of learning will be used, is a question and answer of this form, that is, question and answer form to initiate and conduct, so that we can have a good learning outcomes, and questions have a good understanding and correct understanding, so that, when encountered in practical work can be solved in time, and not know what to do, or create new problems, affect the normal use of the boiler, and the results. 1. boiler, natural circulation it is formed? Boiler circulating, is divided into natural circulation and forced circulation of both. In the natural cycle, which is by natural pressure difference between the heating surface and the downcomer, to achieve. Specifically, it is because the density of the mixture in the riser soda, is less than the water in the downcomer the density. Therefore, we can take advantage of this density difference, to make the working fluid flows, without the need for additional external consumption. So, which forms a natural circulation.

Low nitrogen gas boiler NOx causes and solutions to reduce NOx: nitrogen gas boiler low NOx generated into thermal-type NOx (ThermalNOx), fast-type NOx (PromptNOx) and fuel type NOx (FuelNOx). Gas lower nitrogen content, therefore, is not its primary fuel NOx control type. Thermal NOx refers to NOx combustion air at a high temperature oxidation of N2. On the thermal NOx formation mechanism commonly used in the Czech Popovich channel mechanism: When the temperature is lower than 1500 ℃, the heat generation amount of NOx is small; Above 1500 ℃, the temperature is increased 100 ℃, the reaction rate will increase 6 to 7 times. In the actual combustion process, since the temperature distribution in the combustion chamber is not uniform, if there is a local high-temperature region, the NOx generated in these areas will be more, it may be the entire NOx formation in the combustion chamber plays a key role. In the case of prompt NOx combustion of hydrocarbon fuel and fuel-rich reaction zone will quickly generate NOx. Various factors alone changes in the actual combustion process, a number of parameters are in constant flux, even the simplest of combustion of gaseous fuel, the fuel and air should be subjected to mixing, combustion flue gas, until the last to leave hearth. The degree of mixing temperature of the furnace fuel and air, flue gases in the furnace and residence time of these parameters have a great effect on NOx emissions are in constantly changing. After the fuel and air mixture into the furnace, due to the surrounding high temperature flue gas convection and radiation heating the mixture stream temperature quickly rises. Upon reaching the ignition temperature, the fuel begins to burn, when a sharp rise in temperature to a level close to the adiabatic temperature.

Third, after-sales management to ensure strong

The transformation of low nitrogen boiler as well as fundamental for many businesses to transform and upgrade the all-round production principles, then after the completion of the transformation of enterprises also need professionals to provide technical guidance and protection of services, the transformation of low nitrogen boiler optional companies must have perfect service system to fly as a guarantee.

December 29, 2018, Yulin City, Shaanxi Provincial People's Government issued an iron fist rule on blue haze win the Battle of three-year action plan (2018-2020 years) (hereinafter referred to as the "Program").

That "plan", mainly to adhere to all the people cohabitation, source control, continued implementation of air pollution control operations, improve the city's air quality, determined to win the battle of the blue sky efforts. Details are as follows.

1, the construction of high-pollution fuel combustion zone ban. Deadlines have been designated high-pollution fuel combustion zone ban construction of combustion zone ban prohibits the sale, burning polluting fuels, a ban on new or expanded high-polluting fuel burning facilities have been built in the city and county governments should provide the within switching to natural gas, liquefied petroleum gas, electricity or other clean energy sources.

2, to further promote the bulk coal governance. Promoting rural residents, agricultural production, clean energy alternative to coal-fired commercial activities, take electricity instead of coal, substitution of gas for coal, and biomass, wind and solar and other clean energy alternatives.

3, accelerate the transformation of governance-fired power plants. Accelerate the construction of wind power, photovoltaic and other non-fossil energy electricity generation. Implementation of the provincial special program, shutting down vigorously eliminate environmental protection, energy consumption, security is not up to 300,000 kilowatts coal-fired units. Capacity to shut down the unit, coal consumption and pollutant emission targets to carry out a transaction or replacement.

4, prohibiting new coal-fired central heating station. New heating all use natural gas, electricity, heating Renewable energy (including biomass clean heating, solar heating, heating and other industrial waste heat), to give priority to distributed clean energy central heating, residential buildings do not have the conditions, you can access municipal centralized heating.

5, to carry out comprehensive improvement of coal-fired boilers. The city is no longer a new 35 tons of steam per hour of coal-fired boilers, 65 tons of steam per hour and above all coal-fired boilers and energy-efficient ultra-low emissions to complete the transformation. Increase the small coal-fired boilers and furnaces tea, operating the stove, grain storage and drying equipment and other efforts to phase out coal-fired facilities, phasing out 10 tons of steam per hour and coal-fired boilers. Low NOx combustion gas boiler to carry out the transformation. Before the end of 2020, the conditions of the conventional gas combustion boiler completed low nitrogen transformation, after transformation of nitrogen oxide emissions is not higher than 80 mg / m. Urban built-up area of ​​ultra-low emission biomass boilers implement reform.

6, strengthen straw Jinshao main responsibility. To carry out special inspections straw Jinshao in the summer harvest and autumn harvest stage. Due to open burning of straw to prevent regional heavy pollution caused by the weather.

7, pin good job of storing system for gas production. Gas supply priority for city residents and substitute coal for heating in winter. "Coal to gas" adhere to the "gas will change" to ensure safe construction, safe use, and safety management. Orderly development of natural gas peaking power plants and other interruptible customers.

8, speed up the upgrading of rural power grids. Urban counties to formulate a work program. Power grid enterprises to co-ordinate the construction of power transmission and transformation project to meet heating demand for electricity residents. Encouraged to promote regenerative and other electric heating. Governments at all levels to "coal to electricity" project supporting grid should be given support, coordination "of coal to electricity," "coal to gas" land for construction.

9, improve energy efficiency. Continue to implement the action of the total energy consumption dual control and strength. Improve energy efficiency standards, develop, promote energy efficient technologies and products to achieve key energy industries, energy-saving equipment standard full coverage. New projects in key areas of high energy consumption per unit of product (output) energy consumption should reach the international advanced level.

10, to accelerate the development of clean energy and new energy. Optimization of wind energy, solar energy development layout. Where the conditions of availability of resources, to encourage the development of county biomass cogeneration, biomass briquette boilers and biogas.