1. Introduction
Research surrounding the co-combustion of coal and biomass is important because it provides a more environmentally focused method of power generation that can be used throughout the world. This subject was chosen to bring light to the topic of co-combustion of coal and biomass and to examine recent work performed in this particular area.
One of the best ways to curb hazardous emissions is to introduce biomass and waste as replacements for fossil fuels in the power generation process. This method is becoming more popular, because biomass is considered to be a renewable energy source. Biomass consists of corn cobs, straw, rice husks, short rotation herbaceous crops, woody crops, sawdust, coconut coir, alfalfa stems, various types
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It is a fuel blending practice common to the solid fuels community. Three general techniques make up the cofiring technology family: blending the biomass and coal in the fuel handling system and feeding that blend to the boiler; preparing the biomass fuel separately from coal, and injecting it into the boiler without impacting the conventional coal delivery system; and gasifying the biomass with subsequent combustion of the producer gas in either a boiler or a combined cycle combustion turbine generating plant [3].
Co-firing is viewed as the most cost effective approach to biomass utilization by the electric utility industry. It was introduced to reduce CO2 emissions and to provide a broader base of biofuel supplies by developing infrastructural support for fuel supply and delivery. State and Federal efforts have also been put in place to promote the use of biomass fuels for electricity generation by providing tax incentives for producing power from biomass
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They also determined that the cost of retrofitting an existing coal-fired power plant to a co-combustion plant could be considerably lower than building a new-dedicated biomass or waste-fired plant. It was also concluded that using biomass in boilers offered many advantages including mitigating CO2, NOx, SOx and CO emissions. It also increased flame temperature [2].
Larry Baxter investigated the cofiring of biomass with coal and determined that it provides the most cost effective means of reducing net CO2 emissions from coal-based power plants and among the most efficient and inexpensive use of biomass. He researched over 100 successful field demonstrations in 16 different countries and covered nearly every major type of biomass available. He showed that among countries actively working to improve global climate change through mitigation strategies that cofiring was ranked the lowest risk and least expensive of all strategies that were investigated
These articles help with building the picture that climate change is agreed upon everyone that it is an urgent and real thing is in of
This high production of biomass energy and reusing waste has more potential than just West Texas. Texas contains several farms, waste-water plants, and agricultural land to utilize for biomass energy
Devon McCann October 26, 2015 In Climate Matters: Ethics in a Warming World, John Broome goes beyond the scientific facts of climate change and describes different lenses, be it economic or moral thinking, to view the issue. Most everyone has heard the argument before that the economy is going to suffer due to climate change, however Broome's argument is an original one I had yet to hear. He argues that emissions of greenhouse gases cause external costs, which means they are inefficient in the sense that it is possible to make someone better off without making anyone worse off. In this case it would mean compensating those emitters who reduce their carbon emissions.
The federal government of Canada is working with provinces and territories to reach ambitious stated in international agreements and lead the world towards a low-carbon, climate resilient economy. Particularly, for helping more people to adapt the climate change in the world, the government will deliver on Canada’s international climate-finance commitment of $2.65 billion by 2020. This actions could help support the poorest and most vulnerable countries to adapt to the adverse effects of climate change, and help achieve sustained emissions reductions in developing countries. Besides, the government also explores tools related to acquiring internationally transferred mitigation outcomes under the Paris Agreement and engages international partners to ensure that trade rules support climate
By reinforcing laws and increasing the number of professional government inspectors, any loopholes and acts of bribery can be eliminated. Although regulating the carbon dioxide levels is important, nonetheless, nothing can truly be achieved if production has to stay the same while demand increases; thus, to make this scheme effective, a greener, renewable energy source is needed. Alternative energy is always a subject that is almost completely ignored by the Republicans, but mentioned by a handful of Democrats. But so far any significant effort, such
Renewable energy does not pollute the environment and disperse through a very wide area. Biomass is another type of renewable energy that derived from plants or animals. The solar energy stored in the chemical compounds of biomass can make liquid fuels like ethanol for cars, gaseous fuels like methane, that can be burned in place of natural gas, and solid fuels like wood chips that can be burned instead of coal. You also have to collect it before you are able to use it and it is difficult to harness. Furthermore, an incentive structure needs to be established that makes the investment in such technology viable.
COP21 which was held on Nov. 330 th 2015 and lasted two weeks aimed to devise a legally binding agreement to cap global temperature rises to under 2 degrees Celsius, below preindustrial levels. Negotiations and agreements which have been brewing over several years, were finally settled in a time efficient and effective conference, hosting 196 parties which all participated in the agreement to decrease the use of fossil fuels which result in the development of greenhouse gases by 2050. The agreement functions upon the framework that each nation is to establish a conformable and realistic reduction target individually, with no penalty present for countries which fail to abide by their self‐imposed targets. Wealthy developed nations like the United
The Enhanced Energy Efficiency case with an added requirement that all coal-fired facilities capture and sequester 50% of their CO2 by 2025; and • Strong Federal Carbon Policy. The Enhanced Energy Efficiency Case, but with (a) a rule that all coal-fired plants sequester 90% of their CO2 by 2025; (b) higher natural gas prices due to increased gas demand to replace coal units that cannot cost-effectively sequester 90%; and (c) lower renewable energy costs from more rapid deployment. Table I-1 summarizes the differences of these four scenarios. Table I-1
‘Did you know that coal generates approximately 40% of the world’s electricity?’ The most significant purpose of coal is to create electricity generation, steel production, cement manufacturing and as a liquid fuel. There are very many types of coal such as peat, lignite, bituminous or sub-bituminous coal, steam coal, anthracite, and graphite. Coal is the largest source used to generate electricity worldwide and it is burned for the manufacture of electricity and heat.
During the process of combustion within the coal power plants, many oxides of carbon, sulfur, and nitrogen are created which results in harsh chemicals being emitted into the air and surrounding ecosystems. “A typical (500 megawatt) coal plant burns 1.4 million tons of coal each year, and as of 2012, there [were] 572 operational coal plants in the U.S. with an average capacity of 547 megawatts” (Union of Concerned Scientist), eluding how distributed the pollution is affecting the entire country. It is important for us as humans to realize that with 572 plants generating 1.4 millions of tons of coal per year, which means approximately an overwhelming 800 million tons of coal are being burned in power plants and emitted into the environment each year, and nothing is being done about it. The burning of coal results in ash, sludge, toxic chemicals, and waste heat that generate never ending environmental problems. “Sulfur dioxide (SO2), contributing to acid rain, nitrogen oxides (NOx), contributing to smog, and particulates, which contribute to both smog and haze” (EIA 2015), are all examples of how the combustion of coal in the electricity generating process has led to irreversible changes in the environment.
Coal is one of the world’s most commonly used resource. It is widely used for electricity generation, steel production and cement manufacturing. Globally, approximately 6.6 billion tonnes of coal were used in 2014 (World Coal Association 2015). The reasons for use are; ease of extraction, and abundance of the material in both developed and developing countries. There are two main types of coal used in the industry; thermal- and metallurgical- coal.
Climate Change is one of the most unsettling problems mankind faces today. It leaves an impact on every single living thing, on every continent, no matter the privilege. Long term investment must be used to change the world. People must do more than just change out their light bulbs for eco-friendly ones, or drive fuel efficient cars. A choice as simple as changing our diets could reduce a human’s carbon footprint by fifty percent.
In contrast, “a carbon tax fixes the economic cost which can be changed if the original tax rate does not lead to the right level of CO2 mitigation” (Nordhaus,
To produce energy, companies burn coal, oil, gas, spin turbines, and build dams. Burning coal is a detrimental option to the environment that produces pollutants and contributes to greenhouse gases. To help with this growing issue, it is preferable to burn oil due the the minimized pollutants and carbon emissions it releases. For the US, fossil fuels are typically imported from other countries primarily being Asian ones.