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Why is biomass a better alternative to natural gas
Why is biomass a much better choice to natural gas?
Competitors in between biomass fuel and natural gas
In recent years, the application of biomass gas is enhancing. In many places, there occur competitions between biomass fuels as well as gas. In this flow, I will certainly take central heating boiler burning for instance, as well as contrast the tools cost, operation expense as well as setting effect of biomass boiler and also gas central heating boiler.

This blog site compares the financial and environmental result of biomass fuel as well as gas. The equipment price of biomass boiler is greater than that of gas boiler. Thinking about the high rate of gas, the annual operating cost (including the price of fuel, electrical energy, labors and maintenance) of natural gas is greater than biomass central heating boiler.

When utilizing biomass gas, it calls for to be outfitted with dust enthusiast, sulfur as well as nitrate eliminating tool to ensure the contaminant emission fulfill the requirement. As for natural gas central heating boiler, it takes on low-nitrogen burning innovation or denitrification gadget to guarantee the NOx exhaust meet the standard.

Analysis of biomass power
Biomass energy is solar power deposited in biomass products in the form of chemical energy. It comes from the photosynthesis of green plants. commercial pellet mill has the form of strong, liquid and gas. Biomass power is referred to as a renewable energy.

According to the various resources, the biomass fuels can be classified right into 6 kinds: plant straw, forestry waste, pet dung, aquatic plants, energy plants, life garbage.

Biomass energy has the adhering to advantages
Inexpensive, large circulation, huge quantity, renewability, storable, easy to use.

Biomass power also has some drawbacks:
Reduced power thickness, not appropriate for long-distance transport. To make sure the biomass fuel supply, it requires large room for storage, which brings monitoring issue.
Plant straw has wide distribution, but it is influenced by regions, seasons, weathers and also various other factors. The supply is not secure. Besides, the calorific value varies a lot. Some are not appropriate for central heating boilers.
Various type of biomass gas have different combustion impacts, which might cause slagging and leaves way too much ash. The alkaline web content in the ash will certainly hinder the continual work of biomass boiler as well as cause corrosion.
Biomass fuels are simple to get damp. 2nd hand pellet machine have excellent effect on the combustion temperature level. Over-high wetness content will make the biomass gas incapable to burn.

Affordable effect
Tools cost
Take a 4t/h steam boiler for instance. The data processor of a DZL horizontal biomass boiler expenses around ￥ 180,000, the price of auxiliary machinery and setup is around ￥ 65,000, so the overall devices cost is ￥ 245,000.

A WNS series gas boiler costs around ￥ 150,000, the price of supporting machinery as well as installation is ￥ 55,000, so the complete devices cost is ￥ 205,000. Consequently, the equipment cost of biomass central heating boiler is greater than that of gas boiler

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

Annual gas expense.
For example:
The warmth performance of a biomass central heating boiler is 80%.
The calorific worth of biomass fuel is 17.58 MJ/kg at the very least.
The price of timber pellets is ￥ 1250/t.
A biomass central heating boiler eat 717kg wood pellet per hour.
The central heating boiler runs for 10 hrs daily.
The annual running time is 300days.
By estimation, the yearly gas cost is ￥ 2,688,800.

Annual electrical fee.
For instance:.
The total power of a force and also induce draft enjoyable is 29.5 kw.
The total power of the reduction box, feeder, water pump and also conveyor is 10kw.
After that the total power of the biomass boiler is 39.5 kw.
The electrical power price is ￥ 1.0/ kwh,.
The daily running time is 10 hours.
The yearly operating days are 300 days.
After that the electrical cost for a year is ￥ 118,500.

Annual labor expense.
As an example:.
The work has 2 changes a day.
Each shifts require 2 person. A fire fighter and also a water operator.
The wage is ￥ 3000 each.
The labor cost is 144,000 per year.

Yearly upkeep price.
Biomass boiler generally has several complementary machinery. Their failing price is more than gas central heating boiler. The annual upkeep price is in proportion to the equipment cost. If the upkeep price is 2.5% of the equipment price, then it is ￥ 6100 annually.


By estimation, the annual running cost of biomass central heating boiler is ￥ 2,957,400.

Gas boiler.
Annual fuel cost.
For instance.
The heat performance of biomass central heating boiler is 90%.
The calorific worth of gas is 35.58 MJ/kg.
The price of gas is ￥ 3.1/ m3.
A gas boiler can take in 315m3 gas every hr.
A gas boiler operates 10 hrs everyday, 300 days annually.
By estimation, the annual gas expense is ￥ 2,929,500.

Annual electric charge.
The power of the heater is 7.5 kw.
The power of water pump and various other power usage devices is 7kw.

So the total electrical power of the biomass central heating boiler is 14.5 kw.
The power cost is ￥ 1.0/ kwh.
The functioning time is 10 hours everyday, 300 days yearly.
So the yearly power cost is ￥ 43500.

Annual labor cost.
The job has 2 changes a day.
As the gas central heating boiler has higher automation, and also the operation is basic, it needs just 1 fireman.
The wage is ￥ 3000 monthly, so the yearly labor price is ￥ 72000.

Yearly maintenance price.
small poultry feed machine of a gas central heating boiler is not much, the cost is low.
Expect the maintenance cost is 1% of the devices cost, then it is ￥ 2100 annually.
By computation, the annual running price of a biomass central heating boiler is ￥ 3,047,100.

Verdict.
In terms of the tools price, biomass boiler is greater than natural gas boiler. In regards to the yearly running price, as gas central heating boiler has higher automation degree, needs less power consumption device, and also less maintenance, the electrical fee, labor price and also maintenance price is less than that of biomass boiler. However thinking about the high price of natural gas, the total procedure price of natural gas central heating boiler is greater than that of biomass central heating boiler.

Ecological effect.
Biomass fuel.
Researchers gauged the exhaust of smoke, SO2 as well as NOx in 2 biomass boiler.

These 2 central heating boilers has comparable evaporation ability. Both of them are not geared up with sulfur and also nitrate eliminating tool. Yet the first one is equipped with a bag-type dust enthusiast, and the second one is outfitted with a film-type dust enthusiast.

The central heating boiler outfitted with film-type dirt collection agency can decrease the ash discharge successfully. In regards to SO2 emission, the wood pellets can fulfill the stated standard even without sulfur eliminating gadget. As for NOx exhaust, the timber pellets can fulfill the standard in boilers geared up with film-type dust collector.

Natural gas.
Natural gas is a high quality and clean gas fuel. The fostering of gas in the boiler can reduce the air pollution incredibly. The ash, sulfur as well as nitrogen material in the natural gas is reduced. The smoke of natural gas consists of little SOx, which a satisfy stated criterion. But the NOx emission is still an issue. Looked into located the NOx emission of gas central heating boiler is 125mg/m3, and 25% of them is more than 150mg/m3.

Final thought.
According to the evaluation over, the type of biomass gas has great influence on the pollutant emission. Timber pellets has less SO2 emission than straw pellets. The biomass boiler with film-type dirt enthusiast has far better ash getting rid of impact than bag-type dirt collector.

The NOx exhaust is beyond criterion in biomass boilers without sulfur or nitrate eliminating gadget, whatever wood pellets or straw pellets. Therefore, it is suggest to gear up reliable dust collection agency, and sulfur and also nitrate getting rid of gadget.

Natural gas has advantages in reducing smoke and SO2 exhaust. However with the enhancing emission requirement, more gas central heating boilers will adopt low-nitrogen burning innovation and nitrate removing gadget.

The respective advantages of natural gas and biomass fuel.
The price of biomass boiler is more than gas. Their operating expense is similar thinking about the surge of gas rate. Besides, the natural gas central heating boiler is easier to manage, and also it does not take much floor area or fuel storage room.

The cost of gas is under government control, so it will not fluctuate greatly. The natural gas supply can be assured when the gas central heating boiler is in use. Biomass pellets supply is restricted by periods. The rate as well as supply is unpredictable, which generally uses up large storehouse area.

In terms of environmental management, biomass boilers have to be outfitted with dirt collection agency, sulfur and also nitrate eliminating device to make sure the smoke, SO2 and NOx discharge satisfy the standard. But gas boilers does not need dirt enthusiast or desulfurizer, but it need to adopt low-nitrogen burning modern technology or nitrate removing tool to cut the NOx exhaust. Besides, the gas boiler does not need dirt cleansing procedure.

Beyond, biomass fuel is eco-friendly. It is solar power transferred in plants by photosynthesis. As stats reveal, the biomass power generated by photosynthesis is 173 billion bunch, but just 3% of them are used. Besides, biomass energy is carbon neutral, which means the carbon dioxide intake in its development amounts to the emission in biomass gas burning.

Fluidized-bed combustion is a modern technology based upon gas-solid fluidized state. It has great flexibility to biomass fuels, the contaminant gas discharge is low. By adding desulfurizer to the fluidized bed, it can eliminate the sulfur straight, and also decrease the SO2 web content in the smoke dramatically.

Nowadays, the fluidized bed can be made use of for the combustion of various type of gas, suitable for the co-firing of biomass as well as coals. The type of gas and also their proportion is adjustable, so you can choose them according the rate to decrease your cost.

The high rate of gas is an issue. And also the price disparity between summer and also wintertime is buckling down. Biomass is an outstanding replacement for typical fuels. To meet the environmental requirement and attain higher cost-effective advantages, it is important to boost the application modern technology of biomass gas, and also enhance the percentage of biomass in energy mix.


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