By Mr.J 2019-11-12 08:32:13
In today's society has entered the era of knowledge explosion, the fierce market competition make us daily, is full of suffering consciousness, deep well and the future, nip in the bud, the competitive landscape of research and its development trend, only relying on scientific and technological innovation, to provide more professional, more close to the needs of customers products and services, integration of all kinds of resources at the same time, follow the international trend, constantly enrich the latest knowledge, combined with the actual need, enhance the level of professional talents and can make the enterprise develop in the competition.EBICO always takes innovation as the foundation of enterprise survival, insists on scientific research innovation, production innovation, process innovation and product innovation, and constantly improves and extends the product chain to meet customer needs.
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.
Product features
Large adjusetment ratio: 1:10, advanced electronic computing proportional mode,steady start up, high temperature control accuracy.
The machine comes with integral compact strictire; for the convenience of installation and maintenance, mobile wheel hub device is used integrally; oil (gas) supply line and control circuit are arranged compactly and ensures systematic connection; it is novel in design and good-looking.
The fuel oil burner supplies oil at low pressure, air (steam) atomizing and can use poor oil.
Fuel and combustion oxygen are computed and supplied separately, and the ratio is computed respectively by PLC, so as to ensure complete combustion and increase efficiency by 2%.
The fan applies frequency converting control, so its annual power consumption reduces 30%-40%; featured in high anti-pressure capacity and strong adaptation, it can control flame easily.
The gas burner applies gas ring atomizing and ensures low NOxemission.
Its elements are protected by protective measures,level of protection: IP55; that of master device reaches IP56-IP67. It improves safety and eliminates potential failure.
Applicable fuel: gas, light oil, oil mixture, heavy/residual oil, pulverized coal, oil/gas dual purpose, oil/gas/coal multipurpose,etc.
This series of burner is applicable for model 500-6000 asphalt mixing plant.
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.
The development of hydrogen-rich tail gas burner is to reuse the hydrogen-rich tail gas discharged from air for a long time, thus improving the utilization rate of hydrogen-rich tail gas and saving production cost.At the same time, hydrogen-rich tail gas burner plays a positive role in promoting energy conservation and emission reduction, and will play a positive role in promoting the environmental protection and the technological progress, development and expansion of the burner industry, producing good social benefits.