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Why is biomass a far better option to natural gas?<br>
Competitors in between biomass fuel and natural gas

In recent times, the application of biomass fuel is boosting. In several locations, there develop competitors in between biomass gas and gas. In this passage, I will certainly take boiler burning as an example, and compare the equipment expense, procedure expense as well as setting effect of biomass boiler as well as gas boiler.



This blog contrasts the economic and ecological impact of biomass gas and natural gas. The equipment cost of biomass boiler is more than that of gas boiler. Considering the high rate of gas, the yearly operating cost (consisting of the cost of fuel, electrical energy, labors and maintenance) of gas is greater than biomass boiler.



When utilizing biomass gas, it calls for to be outfitted with dust enthusiast, sulfur and also nitrate removing gadget to guarantee the toxin exhaust meet the standard. As for natural gas boiler, it takes on low-nitrogen burning modern technology or denitrification device to make sure the NOx exhaust meet the criterion.



Evaluation 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 type of solid, fluid and gas. Biomass power is known as a renewable energy.



According to the different sources, the biomass fuels can be classified into 6 kinds: plant straw, forestry waste, pet dung, aquatic plants, energy plants, life trash.



Biomass power has the following benefits

Inexpensive, vast distribution, big quantity, renewability, storable, easy to use.



Biomass power additionally has some disadvantages:

Reduced energy density, not ideal for long-distance transport. To ensure the biomass gas supply, it calls for huge room for storage space, which brings monitoring problem.

Plant straw has wide circulation, yet it is impacted by areas, seasons, weather conditions as well as other variables. The supply is not stable. Besides, the calorific value differs a whole lot. Some are not ideal for boilers.

Various kinds of biomass gas have various combustion results, which may cause slagging as well as leaves too much ash. The alkaline material in the ash will certainly prevent the continuous work of biomass central heating boiler and create rust.

Biomass fuels are simple to get damp. The moisture web content have wonderful result on the burning temperature. Over-high moisture content will certainly make the biomass gas incapable to burn.



Economical effect

Tools price

Take a 4t/h heavy steam central heating boiler for example. The data processor of a DZL straight biomass boiler prices around ￥ 180,000, the price of supporting machinery and installation is around ￥ 65,000, so the total devices cost is ￥ 245,000.



A WNS collection natural gas boiler expenses around ￥ 150,000, the cost of auxiliary machinery and installment is ￥ 55,000, so the complete tools cost is ￥ 205,000. Therefore, the devices expense of biomass boiler is higher than that of gas boiler



biomass gas boilernatural gas boiler.

Yearly operating cost

We still take a 4t/h heavy steam boiler for example, and compare the annual procedure cost of biomass fuels and also gas central heating boilers. The operation cost of a central heating boiler consists of fuels price, electrical power usage, labor price as well as maintenance cost



Yearly fuel price.

As an example:

The warmth performance of a biomass boiler is 80%.

The calorific worth of biomass fuel is 17.58 MJ/kg at least.

The expense of wood pellets is ￥ 1250/t.

A biomass boiler take in 717kg timber pellet per hr.

The central heating boiler runs for 10 hours day-to-day.

The annual running time is 300days.

By estimation, the annual fuel cost is ￥ 2,688,800.



Annual electrical charge.

For example:.

The complete power of a pressure and also generate draft enjoyable is 29.5 kw.

The overall power of the reduction box, feeder, water pump and conveyor is 10kw.

Then the complete power of the biomass central heating boiler is 39.5 kw.

The power rate is ￥ 1.0/ kwh,.

The daily running time is 10 hrs.

The yearly running days are 300 days.

Then the electric charge for a year is ￥ 118,500.



Annual labor expense.

As an example:.

The job has 2 changes a day.

Each shifts need 2 individual. A fire fighter as well as a water driver.

The wage is ￥ 3000 each.

The labor cost is 144,000 each year.



Annual maintenance price.

Biomass central heating boiler normally has numerous complementary equipment. Their failure rate is greater than gas boiler. The yearly maintenance cost is in proportion to the equipment cost. If the maintenance cost is 2.5% of the tools price, after that it is ￥ 6100 each year.



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



Natural gas boiler.

Annual fuel expense.

For example.

The warmth performance of biomass boiler is 90%.

The calorific value of natural gas is 35.58 MJ/kg.

The price of natural gas is ￥ 3.1/ m3.

A gas boiler can eat 315m3 natural gas every hr.

A gas central heating boiler runs 10 hrs everyday, 300 days each year.

By computation, the annual fuel price is ￥ 2,929,500.



Yearly electric fee.

The power of the burner is 7.5 kw.

The power of water pump and also other power utilization devices is 7kw.

So the overall electric power of the biomass central heating boiler is 14.5 kw.

The power cost is ￥ 1.0/ kwh.

The working time is 10 hrs daily, 300 days every year.

So the yearly electricity price is ￥ 43500.



Yearly labor expense.

The work has 2 changes a day.

As the gas boiler has greater automation, as well as the procedure is easy, it calls for only 1 fireman.

The wage is ￥ 3000 each month, so the annual labor cost is ￥ 72000.




Annual maintenance price.

The maintenance work of a gas central heating boiler is very little, the price is reduced.


Intend the maintenance price is 1% of the tools cost, after that it is ￥ 2100 each year.

By estimation, the yearly running price of a biomass boiler is ￥ 3,047,100.



Verdict.

In terms of the equipment price, biomass central heating boiler is greater than gas central heating boiler. In regards to the yearly running cost, as natural gas boiler has higher automation degree, calls for less power usage device, and less upkeep, the electrical fee, labor expense and also upkeep cost is less than that of biomass central heating boiler. But taking into consideration the high rate of natural gas, the overall procedure price of natural gas boiler is greater than that of biomass central heating boiler.



Ecological impact.

Biomass gas.

Scientist determined the emission of smoke, SO2 and also NOx in 2 biomass central heating boiler.



These 2 central heating boilers has comparable evaporation capability. Both of them are not geared up with sulfur and nitrate getting rid of tool. Yet 2nd hand pellet machine is outfitted with a bag-type dirt enthusiast, as well as the 2nd one is geared up with a film-type dust collector.



The boiler furnished with film-type dust collector can minimize the ash exhaust properly. In terms of SO2 exhaust, the wood pellets can meet the stated requirement also without sulfur removing device. When it comes to NOx emission, the wood pellets can fulfill the requirement in central heating boilers equipped with film-type dirt collector.



Gas.

Natural gas is an excellent quality as well as clean gas fuel. The adoption of gas in the 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 consists of little SOx, which a meet stipulated requirement. However the NOx emission is still a trouble. Looked into located the NOx discharge of natural gas central heating boiler is 125mg/m3, as well as 25% of them is more than 150mg/m3.



Conclusion.

According to the evaluation over, the sort of biomass fuel has terrific impact on the pollutant emission. Wood pellets has less SO2 exhaust than straw pellets. The biomass boiler with film-type dirt enthusiast has much better ash removing effect than bag-type dust collector.



The NOx emission is past standard in biomass boilers without sulfur or nitrate getting rid of device, whatever wood pellets or straw pellets. Therefore, it is recommend to furnish reliable dust enthusiast, and sulfur and also nitrate eliminating gadget.



Natural gas has advantages in cutting smoke and also SO2 exhaust. But with the enhancing discharge requirement, even more gas boilers will adopt low-nitrogen burning modern technology as well as nitrate removing tool.



The particular benefits of natural gas as well as biomass fuel.

The rate of biomass boiler is greater than natural gas. Their operating expense is comparable taking into consideration the increase of gas cost. Besides, the natural gas central heating boiler is simpler to control, and also it does not take much flooring room or gas storeroom.



The price of natural gas is under government control, so it will not change sharply. The natural gas supply can be ensured when the gas boiler remains in use. Biomass pellets supply is restricted by periods. The rate and supply is unstable, which typically uses up big stockroom space.



In regards to environmental management, biomass boilers have to be equipped with dust collector, sulfur as well as nitrate removing gadget to make sure the smoke, SO2 as well as NOx emission fulfill the standard. But gas central heating boilers does not need dirt enthusiast or desulfurizer, but it need to take on low-nitrogen combustion technology or nitrate getting rid of device to reduce the NOx emission. Besides, the gas central heating boiler doesn't require dirt cleaning procedure.



Beyond, biomass fuel is renewable. It is solar power deposited in plants by photosynthesis. As statistics show, the biomass power produced by photosynthesis is 173 billion ton, but only 3% of them are made use of. Besides, biomass energy is carbon neutral, which implies the carbon dioxide intake in its development equals the emission in biomass gas burning.



Fluidized-bed combustion is an innovation based upon gas-solid fluidized state. It has great versatility to biomass gas, the pollutant gas exhaust is reduced. By adding desulfurizer to the fluidized bed, it can eliminate the sulfur directly, and minimize the SO2 content in the smoke sharply.



Nowadays, the fluidized bed can be utilized for the burning of various 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 pick them according the rate to decrease your price.



The high cost of gas is a problem. And also the rate disparity between summer season and winter season is buckling down. poultry feed machine is an outstanding alternative to traditional fuels. To fulfill the environmental need as well as attain higher cost-effective benefits, it is important to boost the application modern technology of biomass gas, and boost the percentage of biomass in power mix.


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