powdered coal

简明释义

粉煤

英英释义

例句

1.A mixture of powdered coal and air is ignited to produce heat.

将粉煤与空气混合后点燃以产生热量。

2.In cement production, powdered coal is often used as a fuel source.

在水泥生产中，粉煤常用作燃料来源。

3.The efficiency of powdered coal combustion can be improved with advanced technology.

通过先进技术可以提高粉煤燃烧的效率。

4.The power plant uses powdered coal to generate electricity efficiently.

发电厂使用粉煤高效地发电。

5.The environmental impact of burning powdered coal is a significant concern.

燃烧粉煤对环境的影响是一个重要问题。

作文

The use of fossil fuels has been a topic of debate for many years, especially in the context of environmental sustainability. One of the most common forms of fossil fuel used in power generation is coal. Among the various types of coal, powdered coal (粉煤) has gained significant attention due to its efficiency and effectiveness in energy production. In this essay, we will explore what powdered coal is, how it is produced, and its implications for the environment and energy sector.Powdered coal refers to coal that has been ground into a fine powder, typically less than 0.1 mm in diameter. This process increases the surface area of the coal, allowing it to burn more efficiently when mixed with air. The production of powdered coal involves crushing and milling the coal into a fine particle size, which can then be transported to power plants for combustion.One of the primary advantages of using powdered coal is its efficiency in burning. When coal is in powdered form, it can achieve a higher combustion temperature and more complete burning compared to larger chunks of coal. This results in a more efficient energy output and reduces the amount of unburned carbon that is released into the atmosphere. Moreover, the use of powdered coal allows for better control over the combustion process, leading to lower emissions of harmful pollutants such as sulfur dioxide and nitrogen oxides.However, the use of powdered coal is not without its challenges. The process of grinding coal into a fine powder requires significant energy and can lead to increased operational costs for power plants. Additionally, handling powdered coal poses safety risks; coal dust is highly combustible and can create explosive atmospheres if not managed properly. Therefore, power plants must implement strict safety protocols to mitigate these risks.From an environmental perspective, while powdered coal offers some advantages in terms of efficiency, it still contributes to greenhouse gas emissions. The combustion of coal releases carbon dioxide, a major contributor to climate change. As the world moves towards renewable energy sources, the reliance on powdered coal and other fossil fuels is being scrutinized. Many countries are investing in cleaner alternatives, such as wind, solar, and hydroelectric power, to reduce their carbon footprint.In conclusion, powdered coal (粉煤) plays a significant role in the energy sector due to its efficiency and effectiveness in power generation. While it presents certain advantages, including improved combustion efficiency and reduced emissions of some pollutants, it also raises concerns regarding safety and environmental impact. As we continue to seek sustainable energy solutions, the future of powdered coal remains uncertain. Balancing the need for energy production with environmental responsibility will be crucial in determining the role of powdered coal in our energy landscape moving forward.

化石燃料的使用多年来一直是一个备受争议的话题，尤其是在环境可持续性的背景下。在发电中使用的最常见的化石燃料之一是煤。在各种类型的煤中，powdered coal（粉煤）因其在能源生产中的效率和有效性而受到广泛关注。在这篇文章中，我们将探讨powdered coal是什么，它是如何生产的，以及它对环境和能源部门的影响。Powdered coal指的是已被磨成细粉的煤，通常直径小于0.1毫米。这个过程增加了煤的表面积，使其在与空气混合时能够更有效地燃烧。Powdered coal的生产涉及将煤粉碎并研磨成细颗粒，这些颗粒随后可以运输到发电厂进行燃烧。使用powdered coal的主要优点之一是其燃烧效率。当煤处于粉末状态时，与较大块煤相比，它可以达到更高的燃烧温度和更完全的燃烧。这导致能量输出更高，并减少释放到大气中的未燃碳量。此外，使用powdered coal可以更好地控制燃烧过程，从而降低有害污染物（如二氧化硫和氮氧化物）的排放。然而，使用powdered coal并非没有挑战。将煤磨成细粉的过程需要大量能量，并可能导致发电厂运营成本增加。此外，处理powdered coal存在安全风险；煤尘高度可燃，如果管理不当，会产生爆炸性气氛。因此，发电厂必须实施严格的安全协议以减轻这些风险。从环境角度来看，尽管powdered coal在效率方面提供了一些优势，但它仍然会导致温室气体排放。煤的燃烧释放二氧化碳，这是气候变化的主要原因。随着世界逐渐转向可再生能源，依赖于powdered coal和其他化石燃料的问题也在受到审视。许多国家正在投资于更清洁的替代能源，如风能、太阳能和水电，以减少其碳足迹。总之，powdered coal（粉煤）在能源部门中发挥着重要作用，因为它在发电中的效率和有效性。尽管它在某些方面具有优势，包括提高的燃烧效率和某些污染物的减少排放，但它也引发了有关安全和环境影响的担忧。随着我们继续寻求可持续能源解决方案，powdered coal的未来仍然不确定。在平衡能源生产需求与环境责任之间，将在决定powdered coal在未来能源格局中的角色时发挥关键作用。