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Why is biomass a better alternative to natural gas
Why is biomass a far better alternative to gas?

Competitors in between biomass gas and also gas
In recent times, the application of biomass gas is boosting. In numerous areas, there arise competitors in between biomass fuels as well as natural gas. In this flow, I will take central heating boiler burning for instance, as well as contrast the equipment expense, procedure expense and setting effect of biomass boiler and gas boiler.

This blog contrasts the economic as well as environmental effect of biomass fuel and also gas. The tools expense of biomass central heating boiler is more than that of natural gas boiler. Thinking about the high rate of gas, the yearly operating cost (consisting of the price of gas, electrical power, labors as well as upkeep) of gas is greater than biomass central heating boiler.

When utilizing biomass fuels, it calls for to be furnished with dirt enthusiast, sulfur and also nitrate removing device to ensure the contaminant discharge meet the requirement. As for natural gas central heating boiler, it embraces low-nitrogen combustion modern technology or denitrification gadget to guarantee the NOx emission satisfy the criterion.

Evaluation of biomass energy
Biomass energy is solar power transferred in biomass materials in the form of chemical energy. It comes from the photosynthesis of green plants. It has the kind of solid, fluid and also gas. Biomass energy is known as a renewable energy.

According to the various sources, the biomass fuels can be classified into 6 kinds: crop straw, forestry waste, animal dung, water plants, energy plants, life trash.

Biomass power has the following benefits
Affordable, wide circulation, big volume, renewability, storable, easy to use.

Biomass power likewise has some downsides:
Reduced power density, not ideal for long-distance transportation. To make sure the biomass gas supply, it needs large room for storage space, which brings administration problem.
Crop straw has wide distribution, yet it is influenced by areas, seasons, weathers as well as various other factors. The supply is not secure. Besides, the calorific value differs a great deal. Some are not suitable for central heating boilers.
Various kinds of biomass fuels have different combustion effects, which might trigger slagging as well as leaves too much ash. The alkaline web content in the ash will certainly impede the continual job of biomass central heating boiler as well as trigger rust.
Biomass gas are very easy to obtain damp. The moisture material have fantastic impact on the combustion temperature. Over-high dampness material will make the biomass gas incapable to shed.

Economical result
Tools price
Take a 4t/h vapor central heating boiler as an example. The mainframe of a DZL straight biomass boiler prices around ￥ 180,000, the price of supporting equipment as well as installation is around ￥ 65,000, so the overall tools price is ￥ 245,000.

A WNS series natural gas central heating boiler costs around ￥ 150,000, the price of supporting equipment as well as setup is ￥ 55,000, so the overall devices cost is ￥ 205,000. As a result, the tools cost of biomass boiler is greater than that of natural gas boiler

biomass fuel boilernatural gas boiler.
Yearly operating expense
We still take a 4t/h heavy steam central heating boiler for example, and contrast the yearly operation price of biomass gas and gas central heating boilers. The operation cost of a boiler consists of fuels price, electricity intake, labor price and also upkeep cost

Annual fuel cost.
For instance:
The warmth performance of a biomass boiler is 80%.
The calorific worth of biomass gas is 17.58 MJ/kg a minimum of.
The expense of wood pellets is ￥ 1250/t.
A biomass boiler eat 717kg timber pellet per hour.
The boiler competes 10 hours everyday.
The annual running time is 300days.
By computation, the annual fuel expense is ￥ 2,688,800.

Annual electric fee.
For instance:.
2nd hand pellet machine of a force as well as induce draft fun is 29.5 kw.
The overall power of the reduction box, feeder, water pump as well as conveyor is 10kw.
Then the complete power of the biomass central heating boiler is 39.5 kw.
The electrical energy price is ￥ 1.0/ kwh,.
The everyday running time is 10 hours.
The annual operating days are 300 days.
Then the electrical charge for a year is ￥ 118,500.

Yearly labor expense.
For instance:.
The work has two shifts a day.
Each changes need 2 individual. A fireman and also a water driver.
The income is ￥ 3000 each.
The labor expense is 144,000 per year.

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Biomass central heating boiler usually has several complementary machinery. Their failing price is greater than gas boiler. The yearly upkeep price is in percentage to the devices expense. If the maintenance cost is 2.5% of the tools price, after that it is ￥ 6100 each year.

By estimation, the yearly running cost of biomass boiler is ￥ 2,957,400.

Gas central heating boiler.
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As an example.
The warmth effectiveness of biomass central heating boiler is 90%.
The calorific worth of gas is 35.58 MJ/kg.
The rate of natural gas is ￥ 3.1/ m3.
A gas boiler can eat 315m3 natural gas every hour.
A gas boiler operates 10 hours daily, 300 days each year.
By computation, the yearly fuel cost is ￥ 2,929,500.

Annual electric cost.
The power of the burner is 7.5 kw.
The power of water pump and other power use equipment is 7kw.
So the complete electric power of the biomass central heating boiler is 14.5 kw.
The power price is ￥ 1.0/ kwh.
The functioning time is 10 hours every day, 300 days every year.
So the yearly electrical energy cost is ￥ 43500.

Yearly labor cost.
The job has 2 changes a day.
As the gas central heating boiler has greater automation, as well as the procedure is basic, it requires just 1 fire fighter.
The salary is ￥ 3000 monthly, so the yearly labor expense is ￥ 72000.


Annual upkeep cost.
The maintenance work of a gas boiler is not much, the price is low.
Intend the upkeep expense is 1% of the devices cost, then it is ￥ 2100 each year.
By calculation, the yearly running price of a biomass boiler is ￥ 3,047,100.

Verdict.
In terms of the equipment expense, biomass boiler is greater than natural gas boiler. In regards to the yearly running cost, as gas boiler has higher automation level, calls for less power usage tool, and less maintenance, the electrical charge, labor cost and maintenance expense is lower than that of biomass central heating boiler. But taking into consideration the high price of natural gas, the overall procedure cost of natural gas central heating boiler is more than that of biomass boiler.

Environmental impact.
Biomass fuel.
Scientist determined the exhaust of smoke, SO2 and also NOx in 2 biomass central heating boiler.

These 2 boilers has comparable evaporation capability. Both of them are not geared up with sulfur as well as nitrate removing device. Yet the first one is furnished with a bag-type dirt collector, and the 2nd one is outfitted with a film-type dust collector.

The boiler equipped with film-type dust collector can reduce the ash exhaust successfully. In regards to SO2 exhaust, the timber pellets can fulfill the stipulated requirement also without sulfur removing gadget. When it comes to NOx discharge, the wood pellets can satisfy the criterion in boilers furnished with film-type dirt collector.

Natural gas.
Natural gas is a high quality as well as clean gas fuel. The adoption of gas in the central heating boiler can minimize the air contamination incredibly. The ash, sulfur and nitrogen material in the natural gas is reduced. The smoke of natural gas consists of little SOx, which a fulfill specified standard. Yet the NOx discharge is still a problem. Investigated discovered the NOx emission of gas central heating boiler is 125mg/m3, and 25% of them is greater than 150mg/m3.

Verdict.
According to the analysis above, the kind of biomass fuel has wonderful impact on the contaminant emission. Wood pellets has much less SO2 exhaust than straw pellets. The biomass central heating boiler with film-type dirt enthusiast has better ash eliminating result than bag-type dirt collector.

The NOx discharge is past criterion in biomass boilers without sulfur or nitrate removing tool, whatever wood pellets or straw pellets. For that reason, it is recommend to outfit effective dust collection agency, and sulfur and also nitrate removing tool.

Gas has advantages in reducing smoke and SO2 exhaust. Yet with the raising exhaust requirement, even more natural gas boilers will embrace low-nitrogen combustion technology and nitrate removing device.

The corresponding advantages of gas and biomass gas.
The rate of biomass central heating boiler is higher than natural gas. Their operating cost is comparable considering the surge of gas cost. Besides, the natural gas central heating boiler is easier to regulate, and it doesn't take much floor room or gas storeroom.

The rate of gas is under federal government control, so it will not change sharply. The natural gas supply can be ensured when the gas central heating boiler remains in use. Biomass pellets supply is restricted by seasons. The cost and supply is unpredictable, which usually takes up huge warehouse room.

In regards to environmental management, biomass boilers have to be equipped with dust collector, sulfur and nitrate eliminating gadget to guarantee the smoke, SO2 as well as NOx emission meet the criterion. But natural gas boilers does not require dirt collection agency or desulfurizer, however it require to take on low-nitrogen burning innovation or nitrate getting rid of device to reduce the NOx exhaust. Besides, the gas central heating boiler does not need dust cleaning procedure.

On the other side, biomass gas is eco-friendly. It is solar energy transferred in plants by photosynthesis. As data reveal, the biomass power generated by photosynthesis is 173 billion bunch, yet only 3% of them are utilized. Besides, biomass power is carbon neutral, which indicates the CO2 intake in its growth equals the exhaust in biomass gas burning.

Fluidized-bed combustion is a technology based upon gas-solid fluidized state. It has excellent adaptability to biomass gas, the contaminant gas emission is reduced. By including desulfurizer to the fluidized bed, it can eliminate the sulfur straight, as well as minimize the SO2 content in the smoke dramatically.

Nowadays, the fluidized bed can be made use of for the burning of different type of fuels, appropriate for the co-firing of biomass as well as coals. The kind of fuels and also their percentage is adjustable, so you can select them according the rate to decrease your expense.

The high cost of natural gas is a problem. And also the cost difference between summertime and also wintertime is buckling down. Biomass is an excellent alternative to traditional gas. To satisfy the environmental need as well as accomplish higher affordable advantages, it is necessary to boost the application modern technology of biomass fuel, and also raise the proportion of biomass in energy mix.


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