A burner is a device for ejecting a mixture of fuel and air in a certain way
author：cc 2019-11-21
A burner is a device for ejecting a mixture of fuel and air in a certain way.Burners are classified into industrial burners, burners, civil burners and special burners according to their types and application fields.Multi-purpose stainless steel or titanium metal corrosion resistant, high temperature resistant materials made.The role of the burner is to atomize the sample through flame combustion.The atomized test solution enters the burner and, under the action of flame temperature and atmosphere, goes through drying, melting, evaporation, dissociation and other processes to produce a large number of ground state atoms and some excited state atoms, ions and molecules.A well-designed burner should have the characteristics of high atomization efficiency, low noise and stable flame, so as to ensure high absorption sensitivity and precision of measurement.Gap burners are commonly used in atomic absorption spectrometry to generate atomic vapor.According to the different types of gas and auxiliary gas, the length and width of the gap of the burner are different. Generally, applicable gas and auxiliary gas are marked on the burner.
The frequent occurrence of major climate disasters in the world in 2012 is the result of mankind's increasingly profound understanding of the destructive effects of climate warming.Climate warming is caused by the uncontrolled use of fossil fuels by human beings, which increases the carbon dioxide content in the atmosphere year by year, strengthens the greenhouse effect and destroys the laws of atmospheric circulation.Now the world is exploring new energy sources to replace fossil energy and scientific ways of industrial production and application. Solar energy, wind energy and nuclear energy have been developed and utilized practically.However, the development and utilization technology of biomass industrial energy is just beginning and will last a long time.
Biomass energy comes from solar energy and CO2in the atmosphere. Plants absorb CO2and sunlight in the atmosphere during their growth and synthesize various organic substances, some of which are used by animals to form animal energy.When the organisms and their products are burned, they release energy and at the same time release the absorbed CO2into the atmosphere in equal amount.For the global atmosphere system, the CO2increment of this energy use to the atmosphere is zero, which is called carbon zero emission.There is a huge amount of biomass fuel on earth. If fully utilized, it will play an important role in reducing CO2emissions.The development, research and utilization of solid, liquid and gaseous fuels of plant straw are under development.
All-in-one structure is applied, and the mounting flange is articulated, so it is featured in simple structure, easy and quick operation and maintenance. It is especially applicable for the thermal oil furnace for asphalt heating, the drying drum of the movable mixing plant, the drying drum of the small-sized fixed asphalt mixing plant and other heating equipment under severe conditions; its power is 134kW~1,0714kW. This burner is suitable for various of fuels: light oil, oil mixture, heavy/residual oil, gas, oil/gas. Compressed air or steam is used as the atomizing medium of the fuel series burner; thus, only 2~5kg oil pump pressure is required. It is especially applicable for the site with complicated fuels.
Safe
Common language symbol, high accuracy intelligent control device, digital intelligent program controller, information feedback and remote transmitting, human-computer interface conversation, quick information reading and understanding barrier-free processing, anticorrosive and heat resistant burning front end, combined air valve, high and low pressure monitoring of EBICO form dual-core safe control.
Energy saving
Streamline arc design reduces wind resistance and consumption power of the whole machine largely; S-shaped turbocharger technology enhances anti-resistance ability, so as to adapt to various of hearth; the combination of combustion optimization and intelligent control makes sure approximately 100% combustion efficiency and saves plenty of fuel. The abstract analog frequency control can save up to 70% starting power, and about 40% starting power can be saved every year averagely. 1.5% O2 precise control technology improves energy efficiency largely
Environmental protection
EBICO patent technologies, including multiple air distribution, multiple gas distribution and central premixing technology, minimize NOx and CO emission. Circular oblique flow inlet air, frequency control design and broadband control technology (optional) reduce about 30% noise.
Intelligent
Intelligent program controller, digital manipulator, electronic load regulator, frequency regulator(optional),the supported external communication Modbus485 and Profibus-DP can upload controlled data, realize network communication and remote communication, and form accurate and intelligent central control of EBICO.
Compact size
It feautres compact streamline design,electrical device and control module skid-mounting, small size, sufficient output power, low electric power, easy malign-ance and installation.
Quiet
The newly developed wide air-intake muffler and S-shaped air supply system have greatly decr-eased the noise level during burner operation. By replacing the traditional external muffler, it is able to offer a quiet environment.
Maintenance
The ES series features very simple maintenance due to the design of a door on the top of burner’s body and control box respectively. The maintenance can be easily made by opening the door. Such fast and high-efficiency performance contributes to the experience during the design of EBICO integration module system.
Principle of flue gas recycling:
Some low-temperature flue gas is directly sent into the furnace, or mixed with air (primary or secondary air) into the furnace, because the flue gas absorbs heat and dilutes the oxygen concentration, so that the combustion speed and temperature in the furnace are reduced, because the thermal NOx is reduced.For gas boilers, NOx reduction is most significant.In general, thermal (t-no), rapid (p-no) and fuel (f-no) production pathways are available.The flue gas recycling system is connected with the gas burner. When the inert gas in the circulating flue gas enters the burner, on the one hand, the flame propagation speed will be reduced, and on the other hand, the temperature level in the furnace will be reduced due to the absorption of heat, so the absolute flame temperature will be lowered, which cannot reach the generation temperature. Therefore, the generation of t-no will be inhibited.Other components in circulating flue gas are N2,CO2and H2O in large quantities. As circulating flue gas is mixed in, oxygen concentration in the mixture of air and flue gas decreases, thus affecting the production amount.Mixing circulating flue gas in the air increases the content of N2in the reaction.Due to the high activation energy required for the reaction of oxygen and nitrogen atoms, a large amount of nitrogen failed to react with oxygen to form NO, and reacted with hydrocarbon components in the fuel.A large amount of N2increases the forward reaction of the above equation and generates a large amount of intermediate HCN.The oxygen atoms in the flue gas then react with these intermediate products. The total O2 reaction of HCN in the poor oxygen environment is as follows: HCN+ 5/4O2-+ 1/2N2+CO2+ 1/2H2O;According to the formula, under the condition of lean oxygen and dense combustion, HCN finally generates N2.Therefore, after adopting the flue gas recycling system, on the one hand, the intermediate product HCN increased, while on the other hand, the concentration of O2decreased compared with that before the flue gas recycling was not applicable, which promoted the complete reaction, and the amount of N2was greatly increased, thus reducing the generation of p-no.
From the perspective of heat transfer calculation, the measures to reduce the smoke exhaust temperature are analyzed from the following aspects: increasing the heat exchange surface, improving the heat exchange efficiency of the heating surface, improving the heat exchange temperature difference by using a lower temperature source, and reducing the influence of corrosion on the heat exchange efficiency.As gas boiler host first meet the low nitrogen flame furnace volume and size requirements, the second host of convection heating surface is a main export in order to reduce the smoke temperature, general control in 150 ~ 250 ° C, in order to avoid the smoke temperature increases along with the flue design difficulty of heat preservation, high smoking temperature is too low will cause corrosion in furnace convection heating surface forming wall condensation, therefore, furnace domestic demand to design proper heating surface, the physical dimension more representative chamber size.Increasing the heat exchange surface should mainly consider increasing the heat exchange area of the equipment in the rear of the boiler, which is more favorable for rapidly reducing the exhaust temperature.The second is to have a lower inlet water temperature can be used for heat exchange temperature difference characteristics;Third, corrosion resistant materials can be used to improve its service life.The new structure of efficient heat exchange mainly adopts the form of staggered tube arrangement, efficient heat exchange finned tube, plate heat exchanger, etc., to increase the flue gas disturbance and contact surface, reduce the heat resistance of flue gas stratification, and improve the heat exchange efficiency of medium and flue gas.
For every customer, we are wholeheartedly service.Good quality and good service, this is the quality of EBICO, as a global enterprise, EBICO has always maintained strategic partnership with the world's top brand companies, this is one of our advantages, but also our sales network and service quality can continue to healthy development of important factors!Our sales network can radiate the world, thanks to our quality assurance.Our products have been verified by various countries and users, and our sales and service outlets are all over the world.EBICO's high quality products and perfect sales and service network are like a bridge of friendship, connecting customers with us.