Waste Heat Must Not Be Wasted, Boilers Must Be Retrofitted

1. Install fuel economizer

The hydrocarbons treated by the fuel economizer reduce the viscosity of the fuel, which greatly improves the atomization and refinement of the fuel oil before combustion, and is fully burned in the combustion chamber under low oxygen conditions. It can be reduced by 15% to 20% to avoid the heat taken away in the flue, and the flue temperature will drop by 5°C to 10°C. After the fuel oil of the combustion equipment is treated by the economizer, due to the improvement of the combustion efficiency, the fuel can be saved by 4.87% to 6.10%, and it is obvious that the flame is bright and dazzling, the black smoke disappears, and the furnace is clear and transparent. Thoroughly remove the coking phenomenon of the combustion nozzle and prevent re-coking. Eliminate the phenomenon of residue accumulation on the furnace wall due to insufficient combustion of fuel, and achieve the effect of environmental protection and energy saving. The air pollution caused by the exhaust gas emitted by the combustion equipment is greatly reduced, the harmful components such as carbon monoxide (CO), nitrogen oxide (NOx), and hydrocarbons (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, and the ambient temperature should not exceed 360 °C.

2. Install condensing gas boiler economizer

The condensing gas boiler economizer can be directly installed in the existing boiler flue to recover the energy in the high temperature flue gas, reduce fuel consumption, and the economic benefit is very obvious. At the same time, the condensation of water vapor absorbs nitrogen oxides, sulfur dioxide and other pollution in the flue gas. It is of great significance for environmental protection to reduce pollutant emissions.

3. Adopt condensing waste heat recovery boiler technology

The boiler thermal efficiency is calculated based on the low calorific value of the fuel, without considering the heat loss of the latent heat of vaporization in the high calorific value of the fuel. Therefore, the thermal efficiency of traditional boilers can generally only reach 87% to 91%. The condensing waste heat recovery boiler, which reduces the exhaust gas temperature to 50 to 70 °C, fully recovers the sensible heat in the flue gas and the condensation latent heat of water vapor, improving the The thermal efficiency is improved; the condensed water can also be recycled.

4. Heat pipe waste heat recovery technology is adopted at the tail of the boiler

Waste heat is energy that has not been used in energy utilization equipment under certain economic and technical conditions, that is, 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 waste gas and waste liquid and waste, 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 the total fuel consumption, and the recyclable waste heat resources are about 60% of the total waste heat resources. The super heat pipe is the main heat conduction element of the heat pipe waste heat recovery device. , which is fundamentally different from ordinary heat exchangers. The heat exchange efficiency of the heat pipe waste heat recovery device can reach more than 98%, which cannot be achieved by any ordinary heat exchanger. The heat pipe waste heat recovery device is small in size, only 1/3 of the ordinary heat exchanger. The waste heat recovery device composed of several heat pipes is installed at the boiler flue port, which absorbs the heat in the flue gas and conducts it to the other end at a high speed, so that the exhaust gas temperature is reduced to close to the dew point and the heat emission loss is reduced. 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 fuel-fired, gas-fired and coal-fired boilers, in order to prevent corrosion and fouling of the heating surface at the tail of the boiler, the standard state exhaust gas temperature is generally not lower than 180 °C, and the maximum can reach 250 °C. waste and pollute the environment. The heat pipe waste heat recovery device can recover the heat of the flue gas, and the recovered heat can be used to heat the water for boiler make-up water and domestic water according to the needs, or to heat the air as the boiler combustion air or dry materials. Save fuel costs, reduce production costs, reduce exhaust emissions, energy saving and environmental protection can kill two birds with one stone. The transformation investment is recovered in 3-10 months, and the economic benefits are remarkable.

5. Adopt anti-scaling and descaling technology

By adopting boiler scale remover, electronic scale inhibitor and softened water treatment equipment to optimize the water vapor circulation system, the softened water equipment can remove scale ions such as calcium and magnesium in the water, soften the water quality, and reasonably control the blowdown rate of the boiler, thereby reducing scale. , improve the thermal efficiency of the boiler.

6. Adopt fuel additive technology

Add additives to fuel to optimize fuel, reduce soot and improve thermal efficiency.

7. Use of new fuels

Adopt new environmentally friendly fuel oil to achieve the purpose of reducing fuel cost.

8. Using oxygen-enriched combustion technology

The oxygen content in the air is less than or equal to 21%. The combustion of industrial boilers also works under such air. Practice has shown that when the amount of oxygen in the gas burned by the boiler reaches more than 25%, the energy saving is as high as 20%; the heating time of the boiler is shortened by 1/2-2/3. The oxygen-enriched content in the collected gas is 25%-30%. Oxygen-enriched combustion is the latest energy-saving and environmental protection technology. In the past ten years, with the continuous improvement of environmental protection requirements and the need to save energy, oxygen-enriched combustion as a new combustion technology has flourished in countries around the world.

9. Adopt swirling combustion boiler technology

Compared with traditional industrial boilers, the new technology of pure smokeless and energy-saving swirl combustion boiler has absolute advantages. It saves 30%~35% of coal than hand-fired boilers, and 25% of coal than chain-type automatic boilers. Because pure smokeless energy saving technology uses PID frequency conversion and ABM power saving system, it saves 40% of electricity than traditional boilers, volatile It can achieve more than 90% combustion and utilization, while the burnout rate of volatile matter in traditional boilers is only about 78%, and 22% of the soot is discharged into the atmosphere. It reaches 97%, while the burnout rate of traditional boiler slag is only about 80%. It is for these reasons that pure smokeless and energy-saving combustion technology can increase the furnace temperature from the original 1200 ℃ to about 1500 ℃, which improves the combustion efficiency. , saving fuel and meeting the needs of customers.

10. Adopt air source heat pump water heater replacement technology

Replace the existing fuel (gas) hot water boiler with an air source heat pump hot water unit; it can save energy consumption by 30%-50%.