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Industrial boiler energy saving retrofit
The molecular structure of the hydrocarbons treated by the fuel oil saver has changed, with more fine molecules and increased intermolecular distance, and the viscosity of the fuel has decreased, resulting in a much higher degree of atomization and refinement of the fuel oil before combustion, which is sprayed into the combustion chamber to get full combustion under low oxygen conditions, thus the blast volume of the combustion equipment can be reduced by 15% to 20%, avoiding the heat carried away in the flue, and the flue The flue temperature drops by 5℃ to 10℃.
The molecular structure of the hydrocarbons treated by the fuel oil saver has changed, with more fine molecules and increased intermolecular distance, and the viscosity of the fuel has decreased, resulting in a much higher degree of atomization and refinement of the fuel oil before combustion, which is sprayed into the combustion chamber to get full combustion under low oxygen conditions, thus the blast volume of the combustion equipment can be reduced by 15% to 20%, avoiding the heat carried away in the flue, and the flue The flue temperature drops by 5℃ to 10℃. After the fuel of the combustion equipment is treated by the energy saver, the fuel saving can be 4.87% to 6.10% because the combustion efficiency is improved, and it is obvious that the flame is bright and dazzling, the black smoke disappears, and the furnace is clear and transparent. Clear the coking phenomenon of combustion oil nozzle and prevent re-coking. Eliminate the phenomenon of residue accumulation in the furnace wall due to insufficient combustion of fuel, and achieve the effect of environmental protection and energy saving. The harmful components such as carbon monoxide (CO), nitrogen oxide (NOx) and hydrocarbon (HC) in the exhaust gas are greatly reduced, and the harmful exhaust gas is reduced by more than 50%. At the same time, the dust content in the exhaust gas can be reduced by 30%-40%. Installation location: installed between the oil pump and the combustion chamber or nozzle, the ambient temperature should not exceed 360 ℃.
② Installation of condensing gas boiler energy saver;
Gas boiler exhaust contains up to 18% water vapor, which contains a large amount of latent heat is not used, high exhaust temperature and high sensible heat loss. Natural gas combustion still emits nitrogen oxides, a small amount of sulfur dioxide and other pollutants. Reducing fuel consumption is the way to reduce costs. Condensing gas boiler energy saver can be installed directly in the existing boiler flue to recover energy from high-temperature flue gas and reduce fuel consumption, with obvious economic benefits, while the condensation of water vapor absorbs nitrogen oxides, sulfur dioxide and other pollutants in the flue gas, reducing pollutant emissions and having important environmental protection significance.
③ Adopt condensing waste heat recovery boiler technology;
In conventional boilers, the exhaust temperature is generally 160-250°C. The water vapor in the flue gas is still in a superheated state, and it is impossible to condense into liquid water and release the latent heat of vaporization. As we all know, the boiler thermal efficiency is calculated by the low heat value of the fuel, without considering the heat loss of latent heat of vaporization in the high heat value of the fuel. Therefore, the thermal efficiency of traditional boilers can only reach 87% to 91%. In contrast, the condensing waste heat recovery boiler, which reduces the exhaust temperature to 50-70°C, fully recovers the sensible heat in the flue gas and the latent heat of condensation of water vapor, and improves the thermal efficiency; the condensate can also be recycled.
④ Heat pipe waste heat recovery technology is used at the end of the boiler;
Waste heat is the energy that is not utilized in the energy utilization equipment under certain economic and technical conditions, that is, the excess and waste energy. It includes seven kinds of waste heat of high temperature exhaust gas, waste heat of cooling medium, waste heat of waste steam and waste water, waste heat of high temperature products and slag, waste heat of chemical reaction, waste heat of combustible exhaust gas and waste liquid and waste material, and waste pressure of high pressure fluid. According to the survey, the total waste heat resources of various industries account for about 17%~67% of their total fuel consumption, and the recoverable waste heat resources are about 60% of the total waste heat resources. The superconducting heat pipe is the main heat transfer element of the heat pipe waste heat recovery device, which is fundamentally different from the ordinary heat exchanger. The heat transfer efficiency of heat pipe waste heat recovery device can reach more than 98%, which cannot be achieved by any kind of ordinary heat exchanger. The working principle is as shown in the figure: the left side is the flue gas channel and the right side is the clean air (water or other media) channel, with a partition separating them from each other. The high temperature flue gas is discharged from the left channel, when discharged, the high temperature flue gas flushes the heat pipe, when the flue gas temperature > 30℃, the heat pipe is activated and the heat is automatically transferred to the right side, then the left side of the heat pipe absorbs heat, the high temperature flue gas flows through the heat pipe and the temperature drops, the heat is absorbed by the heat pipe and transferred to the right side. Normal temperature clean air (water or other media) under the action of the blower, along the right channel flow in the opposite direction to flush the heat pipe, then the right side of the heat pipe exothermic, clean air (water or other media) will be heated, the air flow through the heat pipe after the temperature rises. The waste heat recovery device composed of several heat pipes, installed in the boiler flue mouth, will absorb the heat in the flue gas and high-speed conduction to the other end, so that the exhaust temperature drops to close to the dew point and reduce the heat emission loss. The heated clean air can be used to dry materials or be added to the boiler for recycling. Improve the thermal efficiency of boilers and industrial furnaces, reduce fuel consumption and achieve the purpose of energy saving.
In the design and manufacture of industrial oil, gas and coal-fired boilers, in order to prevent corrosion of the heated surface at the end of the boiler and plugging of ash, the standard state exhaust temperature is generally not less than 180°C and up to 250°C. The high temperature flue gas emission not only causes a lot of wasted heat energy, but also pollutes the environment. The heat pipe waste heat collector can recover the heat of flue gas, and the recovered heat can be used to heat water for boiler make-up water and domestic water, or to heat air for boiler combustion air or dry materials as needed. Save fuel cost, reduce production cost, reduce exhaust gas emission, energy saving and environmental protection in one go. The transformation investment is recovered in 3-10 months, with remarkable economic benefits.
⑤ Adopt anti-scaling and descaling technology;
By adopting boiler descaling agent and electronic anti-scaling device, optimizing water and steam circulation system, reasonably controlling boiler discharge rate, thus reducing water scale and improving boiler thermal efficiency.
(6) Adopt fuel additive technology;
Adding additives to the fuel to optimize the fuel, so as to reduce scale and improve thermal efficiency;
(7) Adopt new fuel;
Adopt new environmental protection fuel oil to achieve the purpose of reducing fuel cost.
⑧ Adopt oxygen-rich combustion technology;
Oxygen content in air ≤ 21%. The combustion of industrial boilers also works under such air. Practice shows that: when the amount of oxygen in the gas burned in the boiler reaches 25% or more, energy saving up to 20%; boiler start-up heating time is shortened by 1/2-2/3. And oxygen-rich is the application of physical methods to collect the oxygen in the air, so that the oxygen-rich content of the collected gas is 25%-30%. Oxygen-enriched combustion is an energy-saving and environmental protection technology. In recent decades, with the increasing requirements of environmental protection and the need to save energy, oxygen-enriched combustion as an emerging combustion technology is booming in countries around the world, and now some developed countries in the West require all new industrial kilns, industrial boilers shall not use ordinary air to fuel, have to use oxygen-enriched air to fuel.
⑨ The use of cyclone combustion boiler technology;
As we all know, there are two major drawbacks of traditional boilers, one is the combustion of smoke and soot, becoming an important source of pollution; the second is insufficient combustion of cinder, energy waste is extremely serious. Adopting the new technology of pure smokeless and then energy-saving rotary combustion boiler has advantages compared with traditional industrial boilers. It saves 30%~35% coal than hand-fired boilers and 25% coal than chain type automatic boilers. Because the pure smokeless re-energy saving technology uses PID frequency conversion and ABM power saving system, it saves 40% electricity than traditional boilers, and volatile components can achieve more than 90% combustion and utilization, while the combustion rate of volatile components in traditional boilers is only about 78%, and 22% of soot is emitted to the atmosphere, and the pure smokeless re-energy saving cyclone combustion technology makes the ash combustion rate reach 97%, while the combustion rate of traditional boiler cinders is only It is for these reasons that the pure smokeless re-energy-saving combustion technology can increase the furnace temperature from the original 1200℃ to about 1500℃, which improves the combustion efficiency, saves fuel and meets the needs of customers.
⑩ Adopting air source heat pump hot water unit replacement technology;
Replace the existing oil (gas) hot water boilers with air source heat pump hot water units; can save energy consumption by 30% to 50%
(11) Conversion of coal-fired boilers to oil-fired (gas) boilers;
Boiler fuel energy saving energy saving and environmental protection booster energy saving method