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Why is biomass a better alternative to natural gas
Why is biomass a better choice to gas?
Competitors in between biomass gas and also natural gas
In the last few years, the application of biomass gas is boosting. In lots of places, there arise competitions in between biomass gas and also gas. In this flow, I will certainly take central heating boiler burning for instance, and contrast the equipment cost, operation expense and also setting impact of biomass central heating boiler and also gas central heating boiler.

This blog contrasts the economic and ecological result of biomass gas and gas. The tools price of biomass boiler is more than that of natural gas central heating boiler. Considering the high price of gas, the annual operating expense (consisting of the expense of gas, electricity, labors as well as upkeep) of natural gas is higher than biomass central heating boiler.

When utilizing biomass gas, it calls for to be outfitted with dust collection agency, sulfur and also nitrate removing gadget to make sure the contaminant exhaust satisfy the requirement. When it comes to gas boiler, it takes on low-nitrogen burning innovation or denitrification gadget to make certain the NOx emission satisfy the requirement.

Analysis of biomass energy
Biomass power is solar energy transferred in biomass materials in the form of chemical energy. It originates from the photosynthesis of environment-friendly plants. It has the form of strong, fluid as well as gas. Biomass energy is called a renewable resource.

According to the various sources, the biomass fuels can be categorized into 6 kinds: crop straw, forestry waste, animal dung, marine plants, power plants, life waste.

Biomass energy has the adhering to advantages
Affordable, large distribution, large quantity, renewability, storable, easy to use.


Biomass power also has some downsides:
Reduced power thickness, not appropriate for long-distance transportation. To make certain the biomass fuel supply, it needs huge room for storage, which brings monitoring issue.
Plant straw has vast circulation, however it is affected by areas, periods, climates and also other variables. The supply is not stable. Besides, the calorific value varies a great deal. Some are not suitable for boilers.
Different kinds of biomass fuels have various burning results, which may create slagging and leaves excessive ash. The alkaline material in the ash will certainly impede the continual work of biomass central heating boiler and also cause deterioration.
Biomass gas are easy to obtain damp. The wetness material have terrific result on the burning temperature level. Over-high moisture web content will certainly make the biomass fuel unable to shed.

Economical effect
Equipment expense
Take a 4t/h vapor boiler as an example. The mainframe of a DZL straight biomass boiler prices around ￥ 180,000, the expense of supporting machinery and setup is around ￥ 65,000, so the complete tools expense is ￥ 245,000.

A WNS series gas central heating boiler prices around ￥ 150,000, the expense of auxiliary equipment and setup is ￥ 55,000, so the total tools expense is ￥ 205,000. For that reason, the equipment cost of biomass central heating boiler is higher than that of natural gas boiler

biomass fuel boilernatural gas boiler.
Yearly operating expense
We still take a 4t/h vapor boiler for example, as well as compare the annual operation cost of biomass fuels as well as gas boilers. The operation cost of a boiler includes fuels cost, electrical power usage, labor price and also maintenance price

Annual gas expense.
For example:
The warm performance of a biomass boiler is 80%.
The calorific worth of biomass fuel is 17.58 MJ/kg at least.
The cost of wood pellets is ￥ 1250/t.
A biomass central heating boiler eat 717kg wood pellet per hr.
The central heating boiler runs for 10 hours day-to-day.
The annual running time is 300days.
By computation, the annual fuel cost is ￥ 2,688,800.

Annual electric fee.
For example:.
The total power of a pressure and induce draft fun is 29.5 kw.
The total power of the decrease box, feeder, water pump and also conveyor is 10kw.
After that the overall power of the biomass boiler is 39.5 kw.
The electrical power rate is ￥ 1.0/ kwh,.
The daily running time is 10 hours.
homemade pellet mill running days are 300 days.
Then the electrical fee for a year is ￥ 118,500.

Yearly labor price.
As an example:.
The work has 2 changes a day.
Each changes need 2 individual. A fireman as well as a water operator.
The salary is ￥ 3000 each.
The labor cost is 144,000 annually.

Annual maintenance expense.
Biomass central heating boiler usually has numerous auxiliary equipment. Their failure price is higher than gas boiler. The yearly maintenance price is in proportion to the devices price. If the upkeep cost is 2.5% of the tools expense, after that it is ￥ 6100 yearly.

By computation, the yearly running expense of biomass central heating boiler is ￥ 2,957,400.

Natural gas boiler.
Annual fuel price.
As an example.
The warm performance of biomass central heating boiler is 90%.
The calorific value of gas is 35.58 MJ/kg.
The rate of natural gas is ￥ 3.1/ m3.
A gas central heating boiler can eat 315m3 gas every hour.
A gas boiler operates 10 hours day-to-day, 300 days each year.
By calculation, the yearly fuel price is ￥ 2,929,500.

Annual electric charge.
The power of the heater is 7.5 kw.
The power of water pump and also various other power usage tools is 7kw.
So the overall electrical power of the biomass boiler is 14.5 kw.
The electrical power price is ￥ 1.0/ kwh.
The functioning time is 10 hrs every day, 300 days annually.
So the annual electricity cost is ￥ 43500.

Yearly labor price.
The work has 2 changes a day.
As the gas central heating boiler has higher automation, as well as the procedure is basic, it requires just 1 firefighter.
The wage is ￥ 3000 each month, so the annual labor expense is ￥ 72000.

Yearly upkeep cost.
The upkeep work of a gas central heating boiler is not much, the cost is reduced.
Suppose the maintenance expense is 1% of the tools cost, after that it is ￥ 2100 each year.
By estimation, the annual running price of a biomass central heating boiler is ￥ 3,047,100.

Verdict.
In terms of the devices expense, biomass central heating boiler is more than gas central heating boiler. In terms of the yearly running cost, as gas boiler has greater automation degree, requires much less power usage tool, and less maintenance, the electrical cost, labor expense and upkeep price is less than that of biomass boiler. However thinking about the high rate of natural gas, the overall operation price of gas central heating boiler is higher than that of biomass boiler.

Ecological effect.
Biomass fuel.
Scientist measured the exhaust of smoke, SO2 and also NOx in 2 biomass central heating boiler.

These 2 central heating boilers has similar dissipation ability. Both of them are not equipped with sulfur as well as nitrate getting rid of gadget. But the first one is furnished with a bag-type dirt collection agency, and the 2nd one is geared up with a film-type dust enthusiast.

The boiler furnished with film-type dust collector can decrease the ash exhaust efficiently. In regards to SO2 emission, the wood pellets can satisfy the specified standard even without sulfur getting rid of device. When it comes to NOx emission, the timber pellets can meet the requirement in central heating boilers equipped with film-type dust collection agency.

Gas.
Natural gas is a premium quality and also tidy gas fuel. The fostering of gas in the central heating boiler can reduce the air contamination remarkably. The ash, sulfur as well as nitrogen material in the gas is reduced. The smoke of natural gas has little SOx, which a satisfy stated criterion. But the NOx emission is still an issue. Researched discovered the NOx exhaust of gas central heating boiler is 125mg/m3, and 25% of them is more than 150mg/m3.

Conclusion.
According to the evaluation above, the type of biomass fuel has terrific influence on the toxin emission. Wood pellets has much less SO2 discharge than straw pellets. The biomass boiler with film-type dust collection agency has better ash removing impact than bag-type dust collection agency.

The NOx exhaust is past criterion in biomass boilers without sulfur or nitrate removing device, whatever wood pellets or straw pellets. For that reason, it is advise to gear up effective dust collection agency, and sulfur as well as nitrate getting rid of tool.

Gas has advantages in reducing smoke and also SO2 emission. However with the raising exhaust criterion, more gas boilers will certainly embrace low-nitrogen combustion modern technology as well as nitrate eliminating device.

The corresponding benefits of gas and biomass gas.
The price of biomass central heating boiler is greater than natural gas. Their operating expense is similar taking into consideration the rise of natural gas rate. Besides, the gas boiler is less complicated to regulate, and it doesn't take much floor area or fuel storage room.

The rate of natural gas is under federal government control, so it will not rise and fall dramatically. The gas supply can be guaranteed when the gas central heating boiler remains in usage. Biomass pellets supply is restricted by periods. The cost and also supply is unpredictable, which usually takes up big stockroom room.

In terms of environmental protection, biomass boilers need to be geared up with dust enthusiast, sulfur and nitrate eliminating device to make sure the smoke, SO2 and also NOx discharge fulfill the requirement. But gas boilers doesn't require dust enthusiast or desulfurizer, but it need to embrace low-nitrogen burning innovation or nitrate eliminating gadget to cut the NOx discharge. Besides, the gas boiler does not require dust cleansing procedure.


Beyond, biomass gas is sustainable. It is solar power deposited in plants by photosynthesis. As diy pellet maker show, the biomass energy generated by photosynthesis is 173 billion ton, however only 3% of them are made use of. Besides, biomass energy is carbon neutral, which implies the CO2 intake in its development equals the exhaust in biomass gas burning.

Fluidized-bed burning is an innovation based on gas-solid fluidized state. It has great flexibility to biomass gas, the pollutant gas emission is reduced. By adding desulfurizer to the fluidized bed, it can get rid of the sulfur directly, and reduce the SO2 web content in the smoke sharply.

Nowadays, the fluidized bed can be made use of for the combustion of different kinds of gas, ideal for the co-firing of biomass and coals. The type of gas as well as their percentage is flexible, so you can pick them according the rate to lower your price.

The high price of natural gas is a trouble. As well as the rate disparity in between summer as well as winter months is getting serious. Biomass is a superb alternative to typical fuels. To fulfill the environmental requirement as well as achieve higher economical advantages, it is important to improve the application modern technology of biomass gas, and also increase the proportion of biomass in power mix.


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