dull coal

简明释义

褐煤

英英释义

例句

1.The dull coal was abundant in the region but lacked the necessary properties for metallurgical processes.

该地区的无光泽的煤丰富，但缺乏冶金过程所需的特性。

2.In the power plant, they found that using dull coal reduced the efficiency of energy production.

在发电厂，他们发现使用无光泽的煤降低了能源生产的效率。

3.The miner extracted a piece of dull coal from the seam, which was not suitable for high-quality fuel.

矿工从煤层中提取了一块无光泽的煤，这不适合高质量燃料。

4.The company decided to avoid using dull coal in their production due to its low calorific value.

由于其低热值，公司决定避免在生产中使用无光泽的煤。

5.During the inspection, the geologist noted that the dull coal deposits were older than previously thought.

在检查过程中，地质学家注意到无光泽的煤沉积物比之前认为的要古老。

作文

In the realm of energy resources, coal has historically been one of the most significant sources of fuel around the world. However, not all coal is created equal. Among the various types of coal, there exists a category known as dull coal (暗煤), which is often characterized by its lower energy content and higher impurities compared to other coal varieties. Understanding the implications of using dull coal (暗煤) can provide insights into its role in our energy landscape and the environmental challenges it poses.Firstly, dull coal (暗煤) is typically less efficient when it comes to combustion. This means that when it is burned to produce energy, it generates less heat and power than higher-grade coals like anthracite or bituminous coal. As a result, power plants that rely on dull coal (暗煤) may need to burn larger quantities to achieve the same energy output. This inefficiency not only leads to increased operational costs but also contributes to higher emissions of carbon dioxide and other pollutants, raising concerns about air quality and climate change.Moreover, the impurities found in dull coal (暗煤) can lead to additional environmental issues. For instance, the presence of sulfur in coal can result in the formation of sulfur dioxide when burned, a major contributor to acid rain. Additionally, heavy metals and other harmful substances contained in dull coal (暗煤) can leach into the soil and water systems, posing risks to local ecosystems and human health. The use of such coal raises ethical questions about the responsibility of energy producers to minimize harm to the environment and communities.Despite these drawbacks, dull coal (暗煤) remains a significant resource in many regions, especially where higher-quality coal is scarce or too expensive. In countries with abundant deposits of dull coal (暗煤), it can be an accessible and economically viable option for electricity generation. However, the reliance on this type of coal must be balanced with efforts to transition to cleaner energy sources. Investing in renewable energy technologies, such as solar and wind power, can help reduce dependence on fossil fuels, including dull coal (暗煤).Furthermore, technological advancements in coal processing and combustion techniques may improve the efficiency of dull coal (暗煤). Innovations such as carbon capture and storage (CCS) could mitigate some of the environmental impacts associated with burning coal. By capturing carbon emissions before they enter the atmosphere, we can work towards a more sustainable energy future while still utilizing existing coal resources.In conclusion, while dull coal (暗煤) plays a role in the current energy mix, it is essential to recognize its limitations and environmental impacts. As we move forward, a balanced approach that includes transitioning to cleaner energy sources and improving coal technology will be crucial. By doing so, we can ensure a more sustainable future that prioritizes both energy needs and environmental protection.

在能源资源的领域，煤炭历来是世界上最重要的燃料来源之一。然而，并非所有的煤炭都是相同的。在各种类型的煤中，有一种被称为dull coal（暗煤）的类别，其特点是与其他煤种相比，其能量含量较低且杂质较高。理解使用dull coal（暗煤）的影响可以为我们提供对其在能源格局中的角色以及所带来的环境挑战的深入了解。首先，dull coal（暗煤）在燃烧时通常效率较低。这意味着，当它被燃烧以产生能量时，与更高等级的煤如无烟煤或烟煤相比，它产生的热量和动力较少。因此，依赖于dull coal（暗煤）的发电厂可能需要燃烧更多的煤才能达到相同的能量输出。这种低效不仅导致运营成本增加，还会导致二氧化碳和其他污染物的排放增加，从而引发空气质量和气候变化方面的担忧。此外，dull coal（暗煤）中存在的杂质可能导致额外的环境问题。例如，煤中硫的存在在燃烧时会形成二氧化硫，这是酸雨的主要成因。此外，dull coal（暗煤）中含有的重金属和其他有害物质可能渗入土壤和水体系统，给当地生态系统和人类健康带来风险。使用这种煤炭引发了有关能源生产者应负责任地减少对环境和社区伤害的伦理问题。尽管存在这些缺点，dull coal（暗煤）在许多地区仍然是一个重要的资源，特别是在高品质煤稀缺或过于昂贵的地方。在拥有丰富dull coal（暗煤）矿藏的国家，它可以成为一种可获得且经济可行的电力生成选项。然而，对这种煤炭的依赖必须与向更清洁能源来源过渡的努力相平衡。投资于可再生能源技术，如太阳能和风能，可以帮助减少对化石燃料，包括dull coal（暗煤）的依赖。此外，煤炭加工和燃烧技术的技术进步可能会提高dull coal（暗煤）的效率。碳捕集与储存（CCS）等创新可以减轻燃烧煤炭所带来的一些环境影响。通过在二氧化碳排放进入大气之前捕获它，我们可以朝着更可持续的能源未来迈进，同时仍然利用现有的煤炭资源。总之，虽然dull coal（暗煤）在当前的能源组合中发挥着作用，但认识到其局限性和环境影响至关重要。随着我们向前发展，采取一种平衡的方法，包括向更清洁的能源来源过渡和改善煤炭技术，将是至关重要的。通过这样做，我们可以确保一个更可持续的未来，优先考虑能源需求和环境保护。