What is wood pellet (Wood pellets)? #木屑, #木头颗粒 , (#木頭顆粒 ; #木屑 ); #木颗粒|什么是木屑？特色和好处 ( ( 特 色 和 好 处 ; 木 颗 粒 | 什 么 是 木 屑？) ; 在越南联合生产木屑颗粒 ; 在越南聯合生產木屑顆粒 ; 木顆粒|什麼是木屑？特色和好處 ; 与 越 南 同 奈 省 平 阳 省 的 木 质 颗 粒 配 合 ; 與 越 南 同 奈 省 平 陽 省 的 木 質 顆 粒 配 合
#Wood pellet (Wood pellets) - (Viến nén mùn cưa - Wood Pellets) is a solid biofuel produced from waste materials of plants such as sawdust, wood chips, ... Forest residues, industrial by - products such as old paper and forestry waste. These are surplus raw materials used for sawn timber, home appliances and other agricultural products. Under the influence of temperature and pressure, the natural binders bind the raw materials to the pellets, so they do not include additives. Tablets produce large amounts of heat due to low humidity (less than 10% compared to 20-60% natural moisture content in wood core).
The length is 1-2 cm and the diameter is generally 6, 8, 10, or 12mm. It is possible to produce 25mm wood pellet at maximum.
Wood pellets have a uniform overall shape (¼ to 5/16 inch in diameter, 1 to 1.5 inches in length), making it easier to store and use than any biofuel. Its heat-generating technology is quite simple, minimizing operation and maintenance. This system is easy to install and save a lot of energy costs while providing many economical and environmental benefits. From an environmental point of view, wood is an ideal material.
Characteristics of Wood Pellets
Wood Pellets | Characteristic of wood pellet is very easy to manage compared to other Biomass fuel. As the shape and hydrous rate are stable, wood pellet is suitable to use in automatic combustion installation and it can remarkably save time and labor for both of electric power generation boiler and pellet stove for house. It is possible to transport long distance because wood-pellet has high energy density and much energy can be transported at once. Also #wood pellet which is heat-treated, can be stored in long term with less risk for molding.
#木屑, #木头颗粒 , (#木頭顆粒 ; #木屑 ); 特 色 和 好 处 (特色和好处) (木颗粒|什么是木屑？特色和好处) ; 在越南联合生产木屑颗粒 ; 在越南聯合生產木屑顆粒 ; 木顆粒|什麼是木屑？特色和好處 ; 与 越 南 同 奈 省 平 阳 省 的 木 质 颗 粒 配 合 ; 與 越 南 同 奈 省 平 陽 省 的 木 質 顆 粒 配 合
Wood Pellets | Advantages and disadvantages of wood pellet fuel
Wood Pellets | Advantages:
- High quality (shape and hydrous rate are stable)
- Dry, easy to store
- Burning under environmental compliance is possible
- Suitable for automatic combustion operation
- Made of regional renewable resources
- Energy density is higher than wood chips, suitable for transportation and storage
- transportable to areas with high energy demand density because of its high energy density
- Ideal for closed renewable energy system
- Possibility to be an alternative for energy system from smaller to larger scale
- Create employment
Wood Pellet | Disadvantages:
- Labor-intensive more than heating with gas, oil and electric power in house
- Credibility in fuel supply, transportation and combustion is inferior to gas, oil and electric power
- Need storage capacity three times as large as oil's
- Weak to moisture
#木屑, #木头颗粒 , (#木頭顆粒 ; #木屑 ); (木颗粒|什么是木屑？特色和好处) ; 在越南联合生产木屑颗粒 ; 在越南聯合生產木屑顆粒 ; 木顆粒|什麼是木屑？特色和好處 ; 与 越 南 同 奈 省 平 阳 省 的 木 质 颗 粒 配 合 ; 與 越 南 同 奈 省 平 陽 省 的 木 質 顆 粒 配 合
Wood Pellet | Benefits of Tablets
Wood-Pellets | Used in heating systems such as radiators (replacing electricity, coal, oil, firewood ...).
Used in industrial combustion equipment, civil.
- One ton of wood pellets equal 120 gallons of oil. Wood produces the same BTU energy but costs 42% cheaper than petroleum.
- One ton of wood pellets equivalent to 170 gallons of propane. Wood produces the same BTU energy, but is 33% cheaper than propane.
- One ton of wood pellets equivalent to 16,000 ft3 of natural gas. Although natural gas is 24% cheaper than wood pellets, natural gas is not available in colder climates and pellets are an effective alternative fuel in these areas.
- One ton of wood pellets equivalent to 4,755 kWh of electricity. Wood produces the same BTU energy, but is 38% cheaper than electricity.
Wood Pellets | Product Description
Wood pellets is a renewable resource, fuel that is already widely available in the world nowdsays. The sawdust or wood shavings is compressed under great pressure and forced through holes. This is a hot process and the natural ligin in the sawdust/wood shavings melts and binds the dust together, holding the pellet in shape and giving it that characteristic sheen on the outside.
2. Economic efficiency:
Wood pellets are extremely dense and can be produced with a low moisture content (below 10%) that allows them to be burned with a very high combustion efficiency. Their high density also permits compact storage and rational transport over long distance. Electricity generated from pellets in converted coal plants is almost the same cost as electricity generated from natural gas, diesels.
3. Environmentally friendly:
Wood pellets is a sustainable fuel that can deliver a significant reduction in net carbon emissions when compared with fossil fuels. Its production and use also brings additional environmental and social benefits.
4. Using scopes:
fuels replaces fossil fuels in power plants, stoves, boiler of textile, food, leather, animal feeding, dye industrials and animal bedding.
- Size: 6, 8, 10, 12 mm
- Length: 15 - 40 mm max
- Moisture: 8 % max
- Ash: 2 % max
- Calorific value: 4200÷4800 kcal/kg
- Packing: 15kg/b, 650 kg/Jumbo or Bulk into container.
Why we should use Wood Pellet
Heating with #wood pellets offers distinct advantages over conventional fossil heating fuels and other forms of wood burning.
Using pellet fuel reduces our dependence on oil, natural gas, and propane – all non-renewable fossil fuels
Pellet fuel is a renewable fuel where wood is derived from sustainable sources
Displacing fossil fuels with pellet fuels reduces the emission of greenhouses gases such as carbon dioxide, thereby helping to mitigate climate change.
特 色 和 好 处 (特色和好处) (木颗粒|什么是木屑？特色和好处) ; 在越南联合生产木屑颗粒 ; 在越南聯合生產木屑顆粒 ; 木顆粒|什麼是木屑？特色和好處 ; 与 越 南 同 奈 省 平 阳 省 的 木 质 颗 粒 配 合 ; 與 越 南 同 奈 省 平 陽 省 的 木 質 顆 粒 配 合
The Many Benefits of Replacing Coal With #Wood Pellet Fuel
Wood Pellet | Electricity generated from pellets in converted coal plants is almost the same cost as electricity generated from natural gas, by far the cheapest way to make new, low-carbon power.
Wood Pellet | Use of fossil fuels is driving a rapid increase in the concentrations of CO2 in the atmosphere and oceans. The combustion of coal, petroleum products and natural gas, as well as land use changes are, in a matter of a few centuries, releasing carbon that was captured over hundreds of millions of years. There is overwhelming consensus that if we are to mitigate the impacts of increasing CO2 concentrations, we need to change how we create energy. But there is also fear that in doing so we will inhibit economic growth and harm business.
Wood Pellet | There is a simple and ready-to-deploy way of mitigating carbon from power generation that is good for growth and business. It is by converting older coal power plants to wood pellets. The cost of power from the converted plants is about the same as power generated from natural gas, and the strategy results in creating, rather than destroying, jobs. As a bonus, the strategy also provides a motivation to sustain and expand our working forests.
Wood Pellet | One might think that there is no way that using wood pellets for fuel in a power plant can compete with fossil fuels. That would be true if the cost of the fuel were the only input to the total cost of generation. If only fuel cost mattered, utility-scale wind and solar power would be free, and nuclear power would be cheap.
Wood Pellet | There are four key components to the equation that calculates the total cost of generation: repayment of the capital cost to build the plant, the fixed and variable operation and maintenance (O&M) costs, the fuel cost, and the plant’s capacity factor. For nuclear plants, there is a fifth component: decommissioning costs.
Wood Pellet | The capacity factor is a ratio of how much power the plant actually generates versus what it could generate if it ran at 100 percent output every day of the year. Capacity factor matters because the cost of each megawatt-hour generated has to contain a portion of the repayment of the capital cost. Lower capacity factors, such as those for wind and solar, put a higher capital cost repayment burden on each megawatt-hour.
Wood Pellet | Conversion of a pulverized coal plant to a pulverized wood pellet plant is relatively straightforward. Coal plants grind the coal into dust and then pneumatically transport that dust to wall-mounted burners in the boiler. The coal dust combusts very rapidly; almost like a liquid fuel. Grinding pellets into dust and using them in essentially the same hardware has been proven to be technically feasible. For example, England’s largest power plant has converted two of its six 650-MW boilers to use wood pellet fuel instead of coal. That plant is generating reliably and just as many megawatts are being generated from pellet fuel as from coal.
The U.S. has 428 pulverized coal power plants larger than 50 MW, typically aged. For those plants to keep running, most will have to upgrade pollution control systems to meet sulfur, mercury and NOx emissions limits.
The good news is that all of those older plants are fully paid for. That means that the initial capital cost component of the total cost equation can be ignored. The amortized capital cost is by far the largest contributor to the total cost of generation.
Wood Pellet | Assuming that plants older than 35 years are fully paid for, even with pellet fuel 2.9 times more expensive per million Btu than coal, a converted coal plant generating power with pellets creates electricity at a rate that is less than one-third of a cent more expensive per kilowatt-hour than natural gas.
Wood Pellet | Electricity generated from pellets in converted coal plants is almost the same cost as electricity generated from natural gas, by far the cheapest way to make new, low-carbon power. Not only does this strategy provide new low-cost, low-carbon capacity, it also has a very positive impact on job creation. It takes 2,540 jobs to provision a 500-MW coal plant with coal. To provision the same-sized power plant with pellet fuel takes 3,480 jobs.
Wood Pellet | Long-term demand for sustainable refined pellet fuel will motivate the preservation of existing working forests. It will provide a strong market signal for investment in improving forest management and expanding the stock of trees in our forested lands.
This is a strategy for decarbonization of the power sector that does not increase the cost of power, and actually adds jobs. It also incentivizes the expansion of our working forests, which will increase the amount of carbon sequestered.
All of the fears about economic harm that typically paralyze the political process are missing. Our policymakers need to know that there is a way to be proactive on carbon without raising power rates and creating jobs.
Author: William Strauss
(By William Strauss | August 12, 2014)
(木颗粒|什么是木屑？特色和好处) ; 在越南联合生产木屑颗粒 ; 在越南聯合生產木屑顆粒 ; 木顆粒|什麼是木屑？特色和好處 ; 与 越 南 同 奈 省 平 阳 省 的 木 质 颗 粒 配 合 ; 與 越 南 同 奈 省 平 陽 省 的 木 質 顆 粒 配 合
UNH study: #Wood pellets better at reducing greenhouse gas
DURHAM — Using wood pellets for home heating fuel reduces greenhouse gas emissions by more than half over fossil fuels and natural gas, according to new research from the NH Agricultural Experiment Station at the University of New Hampshire.
“Wood pellet heat is a new and growing heating alternative in the U.S. and has been proposed as a climate-beneficial energy source to replace fossil fuels. However, little work has been done to assess this claim,” the researchers said. “The opportunity for switching to wood pellet heat is particularly great for the Northern Forest region of northern Maine, New Hampshire, Vermont, and New York, which is home to more than two million people who live in rural communities, larger towns, and small cities surrounded by the largest intact forest in the eastern United States.”
The researchers also found that:
• Pellets from sawmill residues showed the strongest greenhouse gas emission benefits compared to fossil fuel and propane. Wood pellet fuel reduces greenhouse gas emissions by 54 percent vs. home heating oil, and 59 percent vs. natural gas.
• Making pellets from up to 75 percent pulpwood and 25 percent sawmill residues produced benefits.
• Shifting the existing harvest of pulpwood volume to pellets is beneficial to the climate.
• Market scenarios decreasing or increasing harvest levels greatly affected results.
Wood Pellet | The research was conducted by John Gunn, research assistant professor of forest management and researcher with the NH Agricultural Experiment Station, and colleagues with the Spatial Informatics Group - Natural Assets Laboratory in Pleasanton, Calif. It is presented in “Greenhouse gas emissions of local wood pellet heat from northeastern U.S. forests” in the journal Energy.
Wood Pellet | In the U.S., an estimated 42 percent of all energy consumed is for home heating, most of which is derived from fossil fuels. New York and the five New England states comprise 88 percent of the entire U.S. consumption of home heating oil. Though natural gas is used widely for heat throughout the northeastern United States, the northern states of Maine, New Hampshire, Vermont, and the northern portion of New York still rely on home heating oil as a heat source (62 percent, 45 percent, 43 percent, and 50 percent of homes, respectively). Use of wood for heat is variable throughout the region, ranging from 17 percent of homes in Vermont to 8 percent in New Hampshire and northern New York.
“While the global concern about greenhouse gas emissions and climate change may be daunting, it is important to understand that as individuals we can make decisions that do scale up to have a beneficial impact to the atmosphere. This work shows that even choices about heating our homes and businesses make a difference,” said Gunn.
Nov 20, 2017 at 10:03 AM
#木屑, #木头颗粒 , (#木頭顆粒 ; #木屑 ); 木颗粒|什么是木屑？特色和好处 ( 特 色 和 好 处 ; 木 颗 粒 | 什 么 是 木 屑？) ; 在越南联合生产木屑颗粒 ; 在越南聯合生產木屑顆粒 ; 木顆粒|什麼是木屑？特色和好處 ; 与 越 南 同 奈 省 平 阳 省 的 木 质 颗 粒 配 合 ; 與 越 南 同 奈 省 平 陽 省 的 木 質 顆 粒 配 合
An Phat VN Co., Ltd.
No 34, Tu Cuong Street, 4 Ward, Tan Binh Dist, HCM City, Vietnam