fuel specification affecting natural gas boiler efficiency
The greenhouse oil and gas fuel specification affecting boiler efficiencys produced by ZG boiler have wns series boilers and SZS series oil and gas boilers. These two boilers are fast-assembly installation oil and gas boilers. The boiler body is small, occupying a small area, convenient operation and sufficient output. Oil and gas boilers use natural gas, petroleum and other fuels, fuel delivery is fast, and there is no ash residue after fuel combustion. The greenhouse oil and gas boilers produced by ZG boiler are very environmentally friendly. They adopt advanced low-nitrogen technology to achieve low-nitrogen emission from boilers, and the boilers are clean and clean. It is an environmentally friendly boiler.
Gas-fired steam fuel specification affecting boiler efficiency safety valve from installation to use, it must remain vigilant safety valve is one of the most important components of the gas steam boilers, boiler probability of the risk occurring due to various incidents can effectively suppressed. This article focuses on the safety valve from installation to use several important considerations, we do not ignore the use of gas when it steam boiler. A Notes 1 safety valve, the safety valve should be mounted vertically in a high position in the pot business, set box. 2, between the safety valve and the drum or header, not equipped with access to the steam outlet pipe and the valve. 3, the lever-type safety valve should prevent movement of the self-apparatus and the weight limit leverage deviant guide tube, a spring safety valve should lift and handle means for preventing movement of the adjustment screw is screwed lightly. 4, the rated steam pressure less than or equal to 3.82MPa gas steam boiler safety valve throat diameter of not less than 25mm; power greater than the rated steam pressure 3.82MPa boiler safety valve throat diameter not less than 20mm. 5, the safety valve and coal-fired steam boiler tubes, the cross-sectional area not less than the cross-sectional area of the valve inlet. If several valves installed together with a short tube directly connected to the drum, the cross-sectional area of the passage should not step short tube to 1.25 times the area of all the exhaust valve. 6, the safety valve should normally be installed exhaust pipe, exhaust pipe should be through a safe place, and there is sufficient cross-sectional area to ensure the smooth flow of exhaust. 7, the safety valve exhaust pipe at the bottom should have received a place of safety posturing of drainage pipe, the exhaust pipe and drainage pipe not allow the installation of the valve. 8, rated evaporation to 0.5t h coal-fired steam boiler /, at least two safety valves installed; Rated evaporation 0.5t h less than or equal to electric boiler /, mounted on at least a safety valve. 9, separable economizer outlet, the steam superheater outlet valve must be installed.
Hefei is the blue sky to win the Battle of key areas for innovation to create an international influence is of great significance. Is determined to win the battle of the blue sky, the city combined with the actual situation, formulate a three-year action plan to win the embodiment Battle of blue sky. Details are as follows.
I. Target: 2020, sulfur dioxide, total nitrogen oxide emissions were reduced over 23.1% in 2015, more than 24.2%; PM2.5 concentration decreased more than 18% in 2015, the ratio of the number of days air quality assessment requirements up to the national , severe pollution and over several days ratio decreased by more than 25% compared with 2015; the full realization of "thirteen five" binding targets.
Second, the continued implementation of the total coal consumption control. By 2020, the city's coal accounts for a further decline in the proportion of total energy consumption; the city's total coal consumption to complete the tasks assigned by the national and provincial; new coal projects to implement the reduction of coal instead.
The development of special programs, shutting down vigorously eliminate environmental protection, energy consumption, safety and other 300,000 kilowatts coal-fired units of non-compliance. For shutting down the unit's capacity, coal consumption and emissions targets, allowed to trade or replacement may be within the total national and provincial construction plan developed according to the control range, co-ordinate arrangements for the construction of ultra-low emission coal-fired capacity unit.
Third, the implementation of the "coal to gas" and "electricity instead of coal." Under the premise of the implementation of the gas source, protect people's livelihood, ceramic, glass, foundry industry to actively promote natural gas instead of coal gasification project, orderly implementation of coal-fired facilities from coal to gas. Combined with regional and industry characteristics can actively promote industrial production, building heating and cooling, transportation, agricultural production, the implementation of the residents living in five major areas "electricity instead of coal", focus on improving the proportion of final energy consumption of electricity accounted for. Of the new "coal to gas" projects, we should adhere to increase coal gas reduction to gas will change under the premise signed gas supply contracts, orderly implementation.
Fourth, to carry out comprehensive improvement of coal-fired boilers, coal-fired boilers to increase efforts to eliminate, consolidate the results of coal-fired boilers eliminated. Coal-fired boiler (with tea furnace, operating a stove, grain storage and drying equipment, coal-fired facilities) carried out an intensive investigation, one by one registration. The city basically eliminated 35 tons of steam per hour of coal-fired boilers and furnaces tea, operating the stove, grain storage and drying equipment, coal-fired facilities, no new 35 tons of steam per hour of coal-fired boilers; 35 tons of steam per hour and coal-fired boiler above (except boilers fired power plant) all meet special requirements emission limits; allowed to remain 65 tons of steam per hour coal-fired boiler and above all the complete energy transformation and ultra-low emissions within the city. County (city) district, zone one by one before the end of June 2019 to develop low-nitrogen combustion rehabilitation programs for existing gas boiler, complete combustion of low nitrogen transformation in this area of existing gas boiler before the end of 2019 more than 50%, before the end of 2020 transformation is substantially complete; after transformation principle NOx emission is not higher than 50 mg / m, and comply with appropriate safety boiler specification. Urban built-up area of ultra-low emission biomass boilers implement reform.
Why low nitrogen fuel specification affecting boiler efficiencys are more popular in the market? In China, coal pollution is getting worse. In many industries, not only the hotel's heating, operation of the plant machinery, as well as the needs of people's lives and so on. In many places we need to use gas burners. Combustion gas released a lot of atmospheric pollutants. According to the data, the impact of coal emissions of atmospheric pollutants on the ecological environment is getting worse, here to introduce you to why the low nitrogen boiler popular? 1, more professional in terms of low nitrogen boilers, conventional boilers cost first general, conventional boilers used in China is a certain proportion of gas and air for combustion are mixed in, so that the mixing temperature of the aerosol generated by the combustion is relatively high, resulting in low efficiency of energy supply. Second, the existing gas boiler has become the main way of the city's small and medium enterprises use boilers. The main cause of ozone exceeded targets is nitrogen oxide from gas boilers and motor vehicle emissions due to the use of conventional boilers burning coal can not be completely full. Finally, the safety of conventional boilers is problematic, flammable and explosive, and at a temperature change of circumstances such as insufficient fuel, can lead to explosion. 2, the most important advantage of the well-known low nitrogen low nitrogen boiler boiler most predominant feature is the external energy saving, a low nitrogen boiler pipes by using a relatively low thermal conductivity of the heat insulating rock wool insulation, thereby reducing heat boiler amount, to achieve energy saving effect. Low NOx combustion technique premix, by improving fuel combustion condition, thereby suppressing the generation of nitrogen oxide, rather than a simple flue gas treatment. 3, in addition to environmental reasons people choose low-nitrogen in addition to environmental protection boiler, boiler advantages in energy saving is also very obvious. Low nitrogen boiler, the use of advanced technology and zero pressure swirl mixing valve technology, the ratio of air and gas is always constant, variable load, the late running costs can be substantial savings. Also reduce the operating costs of enterprises. Therefore, low nitrogen boiler is the best choice, but also the most sensible choice. To promote the implementation of environmental protection plan, accelerate the improvement of air quality, speed up the process of using low nitrogen boilers to reduce emissions of nitrogen oxides, nitrogen oxides and reduce PM2.5 due to the formation of the secondary reformer. Give us more space to control air pollution.