Notes

Compare biomass fuel with coal and natural gas<br>
Contrast biomass fuel with coal

The burning efficiency of biomass fuel is similar with medium coal, however it have such benefits over coal:




The calorific worth of biomass pellets is 10% lower than tool coal. Yet biomass pellets can burn out, while coals have 10-15% flammable element left in the coal slag. So in real use, their calorific worth are the same.

Biomass pellets are much easier to ignite than coals, which can shorten the starting time largely.

The solid discharge of biomass pellets is lower than coal. It can reduce the slag discharge cost and also air contamination. The solid emission of biomass pellets are nearly ash, making up 0.4% ~ 7.0% of the complete weight, while the strong emission of coal are ash, alkali, and recurring coal, representing 25% -40% of the overall weight.

Coal's pollutant discharge and corrosion to the boiler is much more serious than biomass pellets. Coal smoke includes a great deal of particle carbons, hazardous SO2, CO and various other rust gas Biomass pellets is mostly made up of C-H raw materials, the gas exhaust is mostly C-H unstable gas, with little SO2 or carbon monoxide exhaust. Biomass fuel is called clean fuel. It can substantially minimize the air pollution and also carbon discharge.

Adoption of biomass fuel in central heating boilers can save time as well as price than coals. A 0.5 t boiler can save 10% fuel cost and 16% time with biomass pellets than coal.



Contrast biomass pellets as well as natural gas.

Price of biomass pellets and gas in boilers

Let's take a 1 lot central heating boiler for instance. Mean it require 600,000 calories for 1 hr. I work out the called for quantity of gas as well as biomass pellets. By multiplying their unit cost, we can exercise the total cost As the form program, biomass pellets cost much less than gas.



Kcal/kg pricerequired quantitytotal price.

gas 9000 ￥ 3.6/ m366m3 ￥ 238.

biomass pellets4200 ￥ 900/t 140kg ￥ 126.



Gas is a non-renewable resource, like coal as well as oil. Biomass energy is the chemical kind of solar power. It consists of wood, forestry waste, crop waste, water plant, animal dung, plant wastes. Each year, the biomass created by photosynthesis depends on 173 billion lot, equal to 10-20 times the annual worldwide power usage, yet only 3% of them are made use of. As long as there is sunshine, the biomass power will certainly never ever go out.



In some backwoods, natural gas is not offered. On the other hand, with more manufacturing facilities change coal-fired boilers right into gas boiler, the cost of natural gas is going to rise up. By contrast, biomass power is abundant in backwoods. richi machinery are very easy to get and also process, which don't take much cost.



The ash residues of timber pellets after shedding has minerals as well as carbon. It can be utilized as fertilizer on farm as well as in yard. You can accumulate the ash deposits from biomass boilers for future use.



Comparison of biomass central heating boiler, gas central heating boiler, as well as coal central heating boiler.

Under the environment security pressure, coal central heating boilers are restricted in lots of cities. Lots of factories have switched to biomass central heating boiler or gas central heating boiler. Right here I 'd like to contrast the 3 boilers as well as determine which is the best.




Preliminary financial investment.

In term of the boilers with the very same ability, gas boilers call for the highest possible expense, then comes biomass central heating boiler, and also coal boiler for the last.



Procedure cost.

In regards to operation price, gas central heating boiler > coal boiler > biomass central heating boiler. The gas price differs in different locations, greater than biomass and also coal. Richi machine of biomass and coal are comparable, but as coal boilers have lower performance, the procedure price is more than biomass central heating boiler.



Environment effect.

In terms of environmental protection, gas central heating boiler > biomass central heating boiler > coal boiler. Gas boilers embrace gas as fuel, biomass central heating boilers take on biomass pellets or briquettes. Coal boilers create the greatest contamination, consisting of SO2, CO, ash, alkali, etc. Biomass boilers arere environmental-friendly than coals. It only create C, H unpredictable gases, as well as little ash deposits.



Application area.

Coal boilers have been limited in numerous cities, or require to be geared up with desulfurizer. Gas supply is not uniform in various locations. Some regions don't have natural gas offered, so biomass boilers become their ideal option.



In conclusion, to meet the environment need, gas central heating boilers and biomass boilers are feasible. Gas boilers have the least discharge, however the cost is the highest possible. Biomass boilers have affordable and large application, and the air pollution emission is reduced. So it has actually been preferred in lots of areas.


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