lignitic coal

简明释义

褐煤

英英释义

例句

1.The combustion of lignitic coal produces more emissions than bituminous coal.

燃烧褐煤产生的排放量比烟煤更多。

2.Due to its high moisture content, lignitic coal has a lower energy density compared to other coals.

由于水分含量高，褐煤的能量密度低于其他煤种。

3.The power plant primarily uses lignitic coal for electricity generation.

这座发电厂主要使用褐煤来发电。

4.Environmental regulations are becoming stricter for the use of lignitic coal in industrial processes.

环境法规对工业过程中使用褐煤的要求越来越严格。

5.In some regions, lignitic coal is mined extensively due to its abundance.

在某些地区，由于资源丰富，褐煤被大量开采。

作文

Lignite, often referred to as lignitic coal, is a type of coal that is considered to be the lowest rank in the coal classification system. It is characterized by its brownish-black color and relatively low carbon content, which typically ranges from 25% to 35%. Due to its high moisture content, which can be as much as 70%, lignitic coal has a lower heating value compared to higher grades of coal such as bituminous or anthracite coal. This makes it less efficient as a fuel source, but it still plays an important role in energy production, particularly in certain regions where it is abundant.The formation of lignitic coal occurs over millions of years through the process of coalification, where plant material is subjected to heat and pressure under layers of sediment. This process results in the gradual transformation of the plant material into peat and eventually into lignite. The relatively young geological age of lignitic coal—often found in deposits that are only a few million years old—means that it retains more of the original plant structure than other types of coal.One of the primary uses of lignitic coal is in electricity generation. Power plants that utilize lignite typically employ technologies specifically designed to handle its unique properties, such as high moisture content. These plants often use direct combustion methods to produce steam, which drives turbines to generate electricity. In some cases, lignitic coal is also used in the production of synthetic fuels and chemicals, providing an alternative to traditional fossil fuels.Despite its advantages in terms of availability and cost, the use of lignitic coal raises several environmental concerns. The combustion of lignite releases significant amounts of carbon dioxide (CO2) and other pollutants into the atmosphere, contributing to climate change and air quality issues. Additionally, mining activities associated with lignite extraction can lead to land degradation, habitat destruction, and water pollution. As a result, there is increasing pressure on governments and industries to transition towards cleaner and more sustainable energy sources.In conclusion, lignitic coal is an important yet controversial energy resource. While it provides a relatively cheap source of energy in certain regions, the environmental implications of its use cannot be overlooked. As the world moves towards a more sustainable energy future, the role of lignitic coal will likely continue to be debated, balancing the needs for energy security, economic development, and environmental protection. Understanding the characteristics and impacts of lignitic coal is essential for making informed decisions about its use and management in the context of global energy challenges.

褐煤，通常被称为lignitic coal，是一种被认为是煤炭分类系统中最低等级的煤。它的特征是棕黑色和相对较低的碳含量，通常在25%到35%之间。由于其高水分含量，可能高达70%，lignitic coal的热值低于比特uminous或无烟煤等更高等级的煤。这使得它作为燃料来源的效率较低，但在某些地区仍然在能源生产中发挥着重要作用。lignitic coal的形成经历了数百万年的煤化过程，其中植物材料在沉积物的层压下受到热和压力的影响。这个过程导致植物材料逐渐转变为泥炭，最终形成褐煤。lignitic coal相对年轻的地质年龄——通常发现的矿床只有几百万年——意味着它保留了比其他类型的煤更多的原始植物结构。lignitic coal的主要用途之一是发电。利用褐煤的发电厂通常采用专门设计的技术来处理其独特的性质，例如高水分含量。这些工厂通常使用直接燃烧的方法产生蒸汽，驱动涡轮机发电。在某些情况下，lignitic coal还用于合成燃料和化学品的生产，为传统化石燃料提供了一种替代方案。尽管在可用性和成本方面有其优势，使用lignitic coal也引发了一些环境问题。燃烧褐煤会向大气中释放大量二氧化碳（CO2）和其他污染物，导致气候变化和空气质量问题。此外，与褐煤开采相关的采矿活动可能导致土地退化、生境破坏和水污染。因此，各国政府和工业界面临越来越大的压力，要求转向更清洁和可持续的能源来源。总之，lignitic coal是一个重要但有争议的能源资源。虽然在某些地区提供了相对便宜的能源来源，但其使用的环境影响不容忽视。随着世界朝着更可持续的能源未来迈进，lignitic coal的角色可能会继续受到辩论，平衡能源安全、经济发展和环境保护的需求。理解lignitic coal的特征和影响，对于在全球能源挑战的背景下做出明智的使用和管理决策至关重要。