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

EVALUATION AND BURNING CHARACTERISTICS OF BIOMASS FUELS

The supposed biomass fuel is a fuel that consists of natural products such as plant materials and pet waste, as well as is the new name for the oldest fuel. Usually talking, we claim that the chaff, wood cutting, stem-shaped crops, peanut coverings, bark, sawdust, etc, are the fuels generally utilized in the agricultural culture in the past.

As the sector creates gradually, it is abandoned, now it is found that these fuels are created. The pollution is far lower than the main fuel of modern market - coal. So in the past few years there have been many central heating boilers committed to biomass fuels, and also many coal-fired central heating boilers have been converted into biomass fuels, but couple of instances of fuels can be fully used.

The unpredictable issue and also H content of biomass fuel are high, showing that it is easy to melt and burns fast. It can adjust to boilers with high water-cooling problems in the heating system, and at the same time produce more flue gas than coal, so the heater is far better than average coal-fired boiler. Bigger.


It is likewise because of the high content of unstable matter and also H, a big amount of water vapor is produced in the fuel, a huge amount of warm is taken in, and the C web content is relatively little, so the low calorific value of the biomass fuel is fairly reduced. The very same central heating boilers, such as fuel, are biomass, which calls for nearly twice as much fuel as bituminous coal.

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Biomass fuels are preferred as a byproduct of agricultural as well as forestry items. Using biomass fuels is a procedure that transforms waste into treasure. Biomass fuels originate from a wide variety of resources and also are conveniently offered for boilers in the agro-processing market. China attaches fantastic relevance to the advancement and utilization of bioenergy.

Biomass fuel pellet items are still seldom used in China. We are mostly shedding directly, and the fuel burning status is not optimistic, as well as the fuel calorific worth utilization is still extremely reduced.

Due to the fact that biomass fuel itself is taken into consideration to be waste application, it is not taken seriously from the administration of the company to the management of the government for its absolutely efficient usage.


Condition of biomass fuel utilized in coal-fired boilers

In the huge backwoods, the items we used to call biomass fuels were shed in the fields and also made use of as fertilizers to make white smoke everywhere in the field and also pollute the atmosphere.

When utilizing biomass fuel, a lot of these units of use do not make use of the biomass fuel, so the boiler room is often "smoke-smoke" when shedding, the fuel is piled up indiscriminately, and also the use of fuel calorific worth is very low.

The residue produced during the burning process often obstructs the flue, triggering the central heating boiler to shed on the regular fire, triggering waste, and the central heating boiler result is typically not enough.

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

The supposed central heating boiler thermal counterbalance is to determine the power loss of various components and forms of central heating boiler operation, as well as subtract the portion of these power losses to acquire the central heating boiler thermal performance.

This approach can much better find the key point of energy waste in the boiler procedure procedure, and can comprehend the secret to fix the central heating boiler power efficiency problem via detection as well as analysis, so as to propose options according to local problems.

5 Suggestions on utilizing coal-fired boilers to boost central heating boiler thermal effectiveness According to the above power loss discovery, the primary power efficiency problems of a lot of coal-fired central heating boilers using biomass fuel are:

1. The exhaust gas temperature is really high, generally getting to above 400 ° C, as well as the major biomass fuel continues to burn in the tail pipeline;

2. The heat loss of the gas is not entirely shed, and also the CO material of the tail flue gas is high. Due to the flying of the fuel, the regional oxygen supply is lacking, so that the gas is not totally melted.

3. The warmth loss of the strong insufficient burning is high, likewise due to the fuel flying. And also melt, and some do not shed entirely right into the chimney.

Relative to these problems, the adhering to boiler reform proposals are suggested:

1. Purely regulate the air volume and heating system unfavorable pressure, reduce the flue gas flow speed, as well as decrease the fuel fluttering speed.

2. Increase the furnace quantity to increase the fuel amount to make sure that the output will certainly not be because of the use of biomass. The fuel is clearly lowered, all the furnace arcs are gotten rid of, the biomass is very easy to stir up, the heating system arc is not very reliable, as well as the ash deposit is little, and also the grate elevation can additionally be decreased.

3. The additional air is included at the departure of the heater to obstruct a large quantity of fuel from flying away. As well as increase the oxygen web content in the smoke course so that the combustion can proceed smoothly.

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With the broad application of biomass fuels, the re-election of coal-fired boilers with biomass fuels has actually ended up being specifically essential. pellet mill plant of biomass fuels will additionally be formed. It is beneficial to China's existing energy usage structure and also contributes to power saving. The basic national plan of intake.


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