By Mr.J 2019-12-12 10:48:55
9 tips for using a burner
The following points should be noted when using the burner:
1.In case of continuous failure of the secondary ignition program of the gas burner, it shall stop the machine to check whether the gas supply system of the burner is normal and whether the circuit connection is correct. Only after the fault is removed can the burner be restarted.
2.It is forbidden to strike or rub the air supply pipeline with wrench or metal rod to avoid causing static electricity or spark and causing gas explosion.
3.Smoking, welding, cutting and other illegal operations are strictly prohibited in the air supply valve set or the flange face of the pipeline.
4.It is strictly forbidden to conduct any open fire test near the pipeline and valve group and pressure regulating valve to avoid serious accidents.
5.Test whether there is fuel in the air supply line, usually with a gas low pressure meter test.
6.In the air supply pipeline, is the empty, but there are residual gas or liquid droplets on the wall, such as electrostatic spark and open fire will also cause combustion and explosion.
7.When the air supply pipeline is ventilated and the valve set is in trouble, it is necessary to remove it. First, the front front main valve of the valve set must be cut off, and then the gas in the pipeline from the main valve to the valve set should be emptied, before the disassembly and maintenance of the valve set can be carried out.
8.In debugging, gas must be serious, safe and efficient.
9.No explosion-proof electric power tools are allowed on site.
At present, the traditional fossil fuels such as coal, oil and natural gas have brought many problems such as environmental pollution and greenhouse effect to human beings.
There are many petrochemical and chlorine-alkali enterprises in China. Many petrochemical and methanol hydrogen production enterprises will produce a large amount of industrial tail gas with hydrogen content of 50%~60% or even more than 90%, which is called hydrogen-rich tail gas.
Hydrogen - rich tail gas is flammable, explosive, large, difficult to transport, and contains certain harmful organic matter, direct emission of environmental pollution;Treatment and utilization of hydrogen-rich tail gas is not only conducive to environmental protection, but also can save energy and reduce costs, thus improving the economic benefits of enterprises.
Applicable fuel
Light/heavy/residual oil、Oil mixture
Natural gas、Liquefied gas、Biogas 、Coke
oven gas (to be designed separately)
Gas/oil multi-purpose
Capacity range：415-41500kW
Applicable mixing plant：500-6000
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 more information on internal combustion engines, please visit wuxi shunmeng technology co., LTD.
Contact number :0086-510-85169858
Website: www.ebico.com
Company address: no. 58, building 48, henghua science and technology park, xiuxi road, binhu district, jiangsu province