Over the last few years, the application of biomass fuel is increasing. In numerous locations, there emerge competitors between biomass gas as well as gas. Inpet food pellet machine , I will take central heating boiler burning for example, and compare the devices price, procedure cost and setting result of biomass central heating boiler as well as natural gas boiler.
This blog contrasts the economic and also ecological impact of biomass gas as well as gas. The tools price of biomass boiler is more than that of natural gas central heating boiler. Taking into consideration the high cost of natural gas, the yearly operating expense (consisting of the cost of gas, electricity, labors as well as upkeep) of natural gas is greater than biomass boiler.
When making use of biomass fuels, it needs to be equipped with dust enthusiast, sulfur and also nitrate getting rid of tool to make sure the pollutant emission fulfill the standard. As for natural gas boiler, it takes on low-nitrogen combustion technology or denitrification device to make certain the NOx emission fulfill the criterion.
Analysis of biomass power
Biomass power is solar energy transferred in biomass materials in the form of chemical power. It originates from the photosynthesis of green plants. It has the kind of strong, fluid and gas. Biomass energy is known as a renewable resource.
According to the various resources, the biomass gas can be identified into 6 kinds: crop straw, forestry waste, pet dung, marine plants, power plants, life trash.
Biomass energy has the complying with advantages
Inexpensive, wide circulation, big volume, renewability, storable, easy to use.
Biomass energy additionally has some downsides:
Reduced energy density, not suitable for long-distance transport. To ensure the biomass fuel supply, it needs big room for storage space, which brings administration issue.
Plant straw has vast circulation, however it is influenced by areas, periods, weathers and other factors. The supply is not secure. Besides, the calorific value differs a great deal. Some are not ideal for boilers.
Various kinds of biomass gas have various combustion effects, which might cause slagging and also leaves excessive ash. The alkaline material in the ash will hinder the continual job of biomass central heating boiler and cause rust.
Biomass fuels are very easy to get damp. The moisture web content have great result on the burning temperature level. Over-high dampness content will certainly make the biomass gas not able to shed.
Cost-effective impact
Tools expense
Take a 4t/h steam boiler for instance. The mainframe of a DZL horizontal biomass central heating boiler prices around 180,000, the price of auxiliary equipment as well as installation is around 65,000, so the complete tools cost is 245,000.
A WNS series gas boiler prices around 150,000, the cost of complementary equipment as well as installment is 55,000, so the total equipment price is 205,000. Therefore, the devices price of biomass boiler is more than that of natural gas central heating boiler
biomass fuel boilernatural gas boiler.
Annual operating cost
We still take a 4t/h heavy steam boiler for instance, and contrast the yearly procedure price of biomass fuels as well as natural gas boilers. The operation price of a central heating boiler includes gas price, electrical power consumption, labor price and also upkeep price
Yearly fuel cost.
For instance:
The heat effectiveness of a biomass central heating boiler is 80%.
The calorific value of biomass fuel is 17.58 MJ/kg at least.
The expense of timber pellets is 1250/t.
A biomass boiler eat 717kg wood pellet per hour.
The central heating boiler runs for 10 hrs daily.
The yearly running time is 300days.
By calculation, the yearly gas expense is 2,688,800.
Annual electrical cost.
For instance:.
The overall power of a force as well as induce draft fun is 29.5 kw.
The overall power of the reduction box, feeder, water pump and also conveyor is 10kw.
Then the complete power of the biomass boiler is 39.5 kw.
The electrical power cost is 1.0/ kwh,.
The daily running time is 10 hrs.
The yearly operating days are 300 days.
After that the electrical charge for a year is 118,500.
Yearly labor expense.
For example:.
The job has two shifts a day.
Each shifts need 2 individual. A fire fighter and also a water driver.
The income is 3000 per person.
The labor price is 144,000 per year.
Annual upkeep price.
Biomass boiler normally has many supporting equipment. Their failing price is greater than gas boiler. The annual upkeep expense remains in percentage to the devices price. If the upkeep expense is 2.5% of the tools expense, after that it is 6100 each year.
By estimation, the yearly running price of biomass boiler is 2,957,400.
Gas central heating boiler.
Yearly gas price.
For instance.
The warm efficiency of biomass central heating boiler is 90%.
The calorific value of gas is 35.58 MJ/kg.
The rate of gas is 3.1/ m3.
A gas central heating boiler can eat 315m3 gas every hr.
A gas central heating boiler runs 10 hours day-to-day, 300 days every year.
By estimation, the annual fuel expense is 2,929,500.
Yearly electrical cost.
The power of the burner is 7.5 kw.
The power of water pump as well as other power application tools is 7kw.
So the overall electrical power of the biomass central heating boiler is 14.5 kw.
The electricity price is 1.0/ kwh.
The functioning time is 10 hrs daily, 300 days every year.
So the yearly electricity expense 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 requires just 1 fire fighter.
The income is 3000 per month, so the yearly labor cost is 72000.
Yearly upkeep price.
The maintenance job of a gas boiler is not much, the price is low.
Mean the upkeep cost is 1% of the equipment expense, after that it is 2100 every year.
By estimation, the annual running expense of a biomass boiler is 3,047,100.
Conclusion.
In regards to the devices expense, biomass central heating boiler is greater than natural gas boiler. In terms of the annual running expense, as gas boiler has higher automation level, calls for less power consumption device, and also less upkeep, the electrical fee, labor expense and maintenance expense is lower than that of biomass central heating boiler. Yet taking into consideration the high price of natural gas, the total procedure price of gas boiler is more than that of biomass central heating boiler.
Ecological impact.
Biomass gas.
Researchers determined the discharge of smoke, SO2 as well as NOx in 2 biomass central heating boiler.
These 2 boilers has comparable evaporation capability. Both of them are not outfitted with sulfur and also nitrate getting rid of tool. Yet the initial one is equipped with a bag-type dust enthusiast, and also the second one is equipped with a film-type dirt collector.
The central heating boiler geared up with film-type dust collector can reduce the ash emission efficiently. In regards to SO2 exhaust, the timber pellets can meet the stipulated criterion even without sulfur removing gadget. As for NOx exhaust, the wood pellets can meet the requirement in central heating boilers equipped with film-type dirt collector.
Natural gas.
Natural gas is a high quality and also clean gas fuel. The adoption of natural gas in the central heating boiler can reduce the air pollution remarkably. The ash, sulfur as well as nitrogen content in the gas is reduced. The smoke of natural gas consists of little SOx, which a satisfy stated requirement. Yet the NOx exhaust is still a problem. Looked into found the NOx emission of natural gas central heating boiler is 125mg/m3, and 25% of them is more than 150mg/m3.
Conclusion.
According to the analysis above, the sort of biomass fuel has terrific impact on the pollutant exhaust. Timber pellets has less SO2 exhaust than straw pellets. The biomass central heating boiler with film-type dust enthusiast has much better ash eliminating impact than bag-type dust collector.
The NOx discharge is past requirement in biomass central heating boilers without sulfur or nitrate removing gadget, whatever wood pellets or straw pellets. As a result, it is recommend to outfit effective dust collector, and also sulfur and also nitrate removing device.
Natural gas has advantages in reducing smoke as well as SO2 emission. However with the enhancing discharge requirement, more gas boilers will certainly embrace low-nitrogen burning technology and nitrate getting rid of tool.
The particular advantages of gas and also biomass gas.
The rate of biomass central heating boiler is higher than gas. Their operating expense is comparable considering the increase of natural gas price. Besides, the gas central heating boiler is simpler to manage, and also it doesn't take much floor space or fuel storage room.
The rate of gas is under government control, so it won't vary greatly. The natural gas supply can be assured when the gas central heating boiler remains in use. Biomass pellets supply is restricted by seasons. The rate and supply is unstable, which normally occupies huge stockroom space.
In terms of environmental management, biomass central heating boilers need to be geared up with dust enthusiast, sulfur and also nitrate removing device to make sure the smoke, SO2 and NOx discharge fulfill the standard. Yet gas central heating boilers doesn't require dust collection agency or desulfurizer, yet it need to take on low-nitrogen combustion modern technology or nitrate eliminating tool to reduce the NOx emission. Besides, the natural gas central heating boiler does not need dirt cleansing procedure.
Beyond, biomass gas is sustainable. It is solar energy transferred in plants by photosynthesis. As stats reveal, the biomass power generated by photosynthesis is 173 billion heap, yet just 3% of them are used. Besides, biomass energy is carbon neutral, which means the CO2 usage in its development amounts to the emission in biomass gas burning.
Fluidized-bed burning is a modern technology based upon gas-solid fluidized state.diy pellet extruder 3d printerhas good flexibility to biomass fuels, the toxin gas emission is reduced. By including desulfurizer to the fluidized bed, it can get rid of the sulfur directly, and also lower the SO2 content in the smoke greatly.
Nowadays, the fluidized bed can be made use of for the combustion of different kinds of gas, suitable for the co-firing of biomass and coals. The kind of gas as well as their proportion is flexible, so you can select them according the cost to decrease your price.
The high cost of natural gas is a trouble. And the price difference between summertime and winter months is buckling down. Biomass is an outstanding alternative to standard fuels. To fulfill the ecological requirement and accomplish higher affordable benefits, it is very important to boost the application innovation of biomass gas, as well as increase the percentage of biomass in energy mix.
