How to Improve the Boiler Thermal Efficiency?

Introduction

Industrial boilers in the energy supply chain affect both the economy and the environment. The industry is focusing on improving the efficiency of industrial boilers due to environmental awareness and energy shortages.

Industrial boilers are important for production and impact energy costs and carbon footprint. In today's industry, more and more people are demanding sustainable development and environmental protection. Society and businesses need to reduce energy consumption and improve efficiency. It's becoming more urgent.

This paper examines ways to make industrial boilers more efficient. It discusses technology, maintenance, cleaning, and staff training. These practices help companies understand and achieve economic and environmental benefits.

Three Tips for Improving Boiler Thermal Efficiency

1. Different boiler type has very different thermal efficiency.

Among them, the thermal efficiency of electric boilers can reach up to 99%. The thermal efficiency of the oil/gas boiler can reach 92%. Biomass and coal-fired boilers are the lowest, only 80-82%.

Boiler makers constantly improve the boiler's design to increase efficiency without altering the fuel. EPCB boiler has a good breakthrough in structure. The thermal efficiency of each boiler is increased by about 3 to 5%. However, the new technology means that the cost of the boiler is relatively high.

Since the boiler body makes up most of the purchase cost, you can only choose a better type when buying.

2。The fuel is completely burned also can improve the thermal efficiency of the boiler.

Let's look at an example using coal briquettes. When the briquettes are completely burned, they produce 19.7MJ of energy per kilogram. When briquettes don't burn completely, they release less energy and produce black carbon particles, CO, and pollution. So, how should we ensure that the fuel is completely burned?

1. Make sure the air and fuel ratio in the furnace is correct and that the air amount is not too much. Also, make sure the boiler fuel is completely burned.

2. Make sure that the air and fuel in the furnace are in full contact, and pay attention to the amount of fuel in the furnace. Just make sure the boiler is running normally.

3. To make sure that coal-fired and biomass-fired boilers burn fuel completely, adjust the air volume of the forced draft fan and induced draft fan. This creates negative pressure in the furnace. No black smoke in the exhaust. The dust in the dust collector has no black particles.

 The best air-fuel ratio is that the color of the flame is the brightest yellow color. And the deep red color is hypoxia.

4. Oil and gas boilers adjust air-fuel ratios based on fuel molecule conditions. No black smoke in the exhaust. Best when the flame is bright white.

3. Full recovery of the heat in the boiler flue gas can also improve the thermal efficiency of the boiler.

The normal air temperature is about 25 ℃. Theoretically, the temperature of exhaust gas can be reduced to 25 ℃. However. This needs a lot of auxiliary equipment. It will make the cost of the boiler system very high. The gains will be far greater than the losses.

1. The tail gas temperature of the steam boiler is about 240 ℃. Based on our previous calculation, we can use the energy-saving device and condenser to control the exhaust gas temperature to around 100 ℃. We can also recover heat from the steam - condensate recovery unit.

2. The tail gas of the hot water boiler is relatively low, but it will also be around 200 ℃. For the same treatment, we can match energy saver and condenser. But don’t need the steam - condensate recovery unit.

3. The tail gas temperature of the thermal oil boiler is relatively the highest. Generally, it will be above 300 ℃. If the boiler is large. It can be equipped with a waste heat boiler. With the economizer and condenser, the boiler's thermal efficiency increases by over 8%. If the boiler is small, only one economizer and condenser are needed.

Summaries

EPCB, a boiler manufacturer, knows that improving boiler efficiency is important for business and society. Improving industrial boilers is important for companies and sustainable business. We are dedicated to giving our customers efficient and dependable boiler solutions. This will help them succeed in a competitive market.