Notes

ANALYSIS OF ENERGY-SAVING CAUSED BY USING BIOMASS FUEL IN COAL-FIRED BOILERS
EVALUATION OF ENERGY-SAVING TRIGGERED BY USING BIOMASS FUEL IN COAL-FIRED BOILERS

ANALYSIS AND ALSO BURNING QUALITIES OF BIOMASS FUELS

The so-called biomass fuel is a fuel that includes organic materials such as plant materials and also animal waste, as well as is the new name for the oldest fuel. Generally speaking, we state that the chaff, timber cutting, stem-shaped plants, peanut coverings, bark, sawdust, etc, are the fuels typically made use of in the agricultural culture in the past.

As the market creates gradually, it is deserted, today it is located that these fuels are generated. The air pollution is far less than the primary fuel of modern-day industry - coal. So in the past few years there have been many boilers dedicated to biomass fuels, and also lots of coal-fired central heating boilers have been exchanged biomass fuels, however few instances of fuels can be fully utilized.

The volatile matter and also H content of biomass fuel are high, suggesting that it is very easy to melt and also burns quick. It can adapt to central heating boilers with high water-cooling conditions in the heating system, as well as at the same time produce more flue gas than coal, so the heating system is much better than common coal-fired central heating boiler. Bigger.

It is likewise because of the high content of unstable issue and also H, a huge quantity of water vapor is generated in the fuel, a huge amount of heat is taken in, as well as the C web content is relatively tiny, so the low calorific worth of the biomass fuel is reasonably reduced. The same central heating boilers, such as fuel, are biomass, which needs virtually two times as much fuel as bituminous coal.

Biomass fuel advancement and combustion features

Biomass fuels are popular as a by-product of agricultural and forestry products. Using biomass fuels is a process that turns waste into treasure. Biomass fuels come from a vast array of resources and are conveniently offered for boilers in the agro-processing sector. China affixes great significance to the advancement and also usage of bioenergy.

Biomass fuel pellet items are still seldom used in China. We are mainly melting straight, and the fuel combustion condition is not positive, and the fuel calorific worth utilization is still extremely low.

Since disk pelletizer is thought about to be waste usage, it is not taken seriously from the monitoring of the business to the administration of the government for its absolutely effective use.

Condition of biomass fuel made use of in coal-fired central heating boilers

In the large rural areas, the items we made use of to call biomass fuels were melted in the fields and made use of as plant foods to make white smoke everywhere in the field and pollute the setting.

When using biomass fuel, the majority of these devices of use do not use the biomass fuel, so the boiler room is usually "smoke-smoke" when shedding, the fuel is piled up indiscriminately, and also the usage of fuel calorific worth is really reduced.

The soot generated throughout the combustion procedure typically obstructs the flue, causing the central heating boiler to burn on the normal fire, triggering waste, as well as the boiler result is commonly insufficient.

Thermal effectiveness examination of coal-fired central heating boilers making use of biomass fuel The boiler thermal performance basic examination is a way to gauge the thermal effectiveness of the central heating boiler through central heating boiler thermal back-balance.

durable small pellet mill -called boiler thermal counterbalance is to determine the energy loss of numerous parts as well as forms of central heating boiler procedure, and also deduct the percent of these energy losses to get the boiler thermal efficiency.

This technique can better spot the key point of energy waste in the central heating boiler procedure process, and can understand the secret to fix the central heating boiler energy performance issue through discovery and also evaluation, so as to recommend services according to regional problems.

5 Suggestions on making use of coal-fired central heating boilers to enhance central heating boiler thermal performance According to the above power loss detection, the major energy effectiveness troubles of most coal-fired central heating boilers making use of biomass fuel are:

1. The exhaust gas temperature level is very high, normally getting to above 400 ° C, and also the major biomass fuel remains to burn in the tail pipeline;

2. The heat loss of the gas is not entirely burned, and the carbon monoxide content of the tail flue gas is high. Because of the flying of the fuel, the local oxygen supply is lacking, to ensure that the gas is not totally shed.


3. The warm loss of the solid incomplete combustion is high, additionally because of the fuel flying. As well as burn, as well as some do not shed entirely into the chimney.

About these troubles, the following boiler reform proposals are proposed:


1. Purely control the air volume and heating system negative stress, minimize the flue gas flow speed, as well as decrease the fuel trembling speed.

2. Broaden the heater quantity to boost the fuel quantity so that the outcome will not be because of the use of biomass. The fuel is certainly minimized, all the heating system arcs are gotten rid of, the biomass is simple to stir up, the heating system arch is not very reliable, and also the ash deposit is little, as well as the grate height can additionally be lowered.

3. The secondary air is added at the exit of the furnace to block a big quantity of fuel from flying away. And enhance the oxygen web content in the smoke course so that the combustion can proceed efficiently.

Conclusion

With the large application of biomass fuels, the re-election of coal-fired central heating boilers with biomass fuels has actually become especially essential. The industrialization of biomass fuels will certainly also be formed. It is beneficial to China's existing power usage structure as well as contributes to power conserving. The basic national plan of usage.


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