low grade coal

简明释义

劣质煤

英英释义

例句

1.Investing in technology to upgrade low grade coal can improve its efficiency.

投资技术以升级低等级煤可以提高其效率。

2.The power plant primarily uses low grade coal for energy production.

这座发电厂主要使用低等级煤进行能源生产。

3.Many industries rely on low grade coal as a cost-effective fuel source.

许多行业依赖于低等级煤作为一种具有成本效益的燃料来源。

4.The mining company specializes in extracting low grade coal from local deposits.

这家矿业公司专门从当地矿藏中提取低等级煤。

5.Due to its high sulfur content, low grade coal is often criticized for environmental pollution.

由于其高硫含量，低等级煤常因环境污染而受到批评。

作文

The world has been increasingly reliant on fossil fuels for energy, and among these, coal remains a significant source. However, not all coal is created equal. One of the less desirable types is known as low grade coal, which refers to coal that has a lower carbon content and higher impurities compared to higher grade varieties. This type of coal is often characterized by its lower heating value, which means it produces less energy when burned. As a result, low grade coal is often considered less efficient for electricity generation and industrial processes.In many parts of the world, particularly in developing countries, low grade coal is still widely used due to its availability and low cost. It can be found in abundance in certain regions, making it an attractive option for power generation. However, the environmental implications of using low grade coal cannot be overlooked. The burning of this coal releases a higher amount of sulfur dioxide, nitrogen oxides, and particulate matter into the atmosphere, contributing to air pollution and related health issues.Moreover, the mining of low grade coal can have detrimental effects on local ecosystems. The process often involves strip mining or mountaintop removal, which can lead to habitat destruction and soil erosion. These practices raise significant concerns about sustainability and the long-term impacts on the environment.Despite these challenges, some argue that low grade coal can still play a role in the transition to cleaner energy sources. For instance, advancements in technology may allow for better emissions control when burning low grade coal. Additionally, it could serve as a temporary solution for countries that are still heavily dependent on coal while they work towards increasing their renewable energy capacity.In conclusion, while low grade coal offers certain economic benefits, its use raises serious environmental and health concerns. As the global community continues to seek sustainable energy solutions, it is crucial to weigh the pros and cons of low grade coal against the urgent need for cleaner alternatives. The future of energy must focus on reducing reliance on fossil fuels, and transitioning away from low grade coal will be an essential part of that journey.

随着全球对化石燃料能源的依赖日益增加，煤炭仍然是一个重要的能源来源。然而，并非所有煤炭都是一样的。其中一种不太理想的类型被称为低品位煤，它指的是与高品位煤相比，碳含量较低且杂质较高的煤。这种煤通常具有较低的热值，这意味着在燃烧时产生的能量较少。因此，低品位煤通常被认为在发电和工业过程中效率较低。在世界许多地方，特别是在发展中国家，由于其可得性和低成本，低品位煤仍被广泛使用。在某些地区，这种煤储量丰富，使其成为发电的吸引选项。然而，使用低品位煤的环境影响不容忽视。燃烧这种煤释放出较高数量的二氧化硫、氮氧化物和颗粒物到大气中，导致空气污染及相关健康问题。此外，低品位煤的开采可能对当地生态系统造成严重影响。这一过程通常涉及露天采矿或山顶剥离，这可能导致栖息地破坏和土壤侵蚀。这些做法引发了关于可持续性和对环境长期影响的重大担忧。尽管面临这些挑战，有些人认为低品位煤在向清洁能源转型中仍可以发挥作用。例如，技术的进步可能允许在燃烧低品位煤时更好地控制排放。此外，它可以作为那些仍然严重依赖煤炭的国家的临时解决方案，同时他们努力增加可再生能源的能力。总之，虽然低品位煤提供了一定的经济利益，但其使用带来了严重的环境和健康问题。随着全球社会继续寻求可持续能源解决方案，权衡低品位煤的利弊与对清洁替代品的迫切需求至关重要。未来的能源必须集中于减少对化石燃料的依赖，而逐步摆脱低品位煤将是这一旅程的重要组成部分。