thermal cracking

简明释义

热裂

英英释义

例句

1.Engineers must consider thermal cracking when designing materials that will be exposed to high temperatures.

工程师在设计将暴露于高温的材料时必须考虑热裂解。

2.In asphalt production, thermal cracking helps to improve the material's properties for better road performance.

在沥青生产中，热裂解有助于改善材料的性能，以提高道路性能。

3.The process of refining crude oil often involves thermal cracking, which breaks down larger molecules into usable fuels.

原油精炼过程通常涉及热裂解，它将较大的分子分解成可用的燃料。

4.The thermal cracking process can produce valuable byproducts, such as ethylene and propylene.

热裂解过程可以产生有价值的副产品，如乙烯和丙烯。

5.The study of thermal cracking is essential for understanding the long-term durability of concrete structures.

研究热裂解对于理解混凝土结构的长期耐久性至关重要。

作文

Thermal cracking is a crucial process in the field of chemical engineering, particularly in the production of fuels and various petrochemical products. This technique involves breaking down large hydrocarbon molecules into smaller, more useful ones through the application of heat. The primary purpose of thermal cracking (热裂解) is to convert heavy oils and other complex hydrocarbons into lighter fractions that can be used as gasoline, diesel, or other valuable chemicals. The process typically occurs at high temperatures, usually between 450 to 750 degrees Celsius, and can be conducted under various conditions, including in the presence of catalysts or steam. The choice of conditions significantly affects the efficiency of the thermal cracking (热裂解) process and the quality of the end products. For instance, catalytic thermal cracking utilizes catalysts to lower the required temperature and increase the yield of desirable products, making it a favored method in many refineries.One of the key advantages of thermal cracking (热裂解) is its ability to produce a wide range of products from a single feedstock. This versatility allows refineries to adapt their processes based on market demands. Additionally, the lighter products generated through thermal cracking (热裂解) are essential for meeting the ever-increasing global energy needs. As the world continues to rely heavily on fossil fuels, understanding and optimizing this process becomes increasingly important.However, thermal cracking (热裂解) is not without its challenges. The high temperatures required for the process can lead to equipment wear and the formation of undesirable byproducts, such as coke. Coke is a carbonaceous material that can build up in reactors and pipelines, leading to operational inefficiencies and increased maintenance costs. Therefore, managing these byproducts and ensuring the longevity of the equipment are critical considerations in the design and operation of thermal cracking units.Moreover, environmental concerns associated with thermal cracking (热裂解) cannot be overlooked. The process emits greenhouse gases and other pollutants, contributing to climate change and air quality issues. As a result, there is a growing emphasis on developing cleaner technologies and alternative methods for hydrocarbon processing. Innovations in this area include integrating renewable energy sources and exploring bio-based feedstocks, which could potentially reduce the environmental footprint of thermal cracking (热裂解).In conclusion, thermal cracking (热裂解) plays a vital role in modern petroleum refining and petrochemical production. By converting heavy hydrocarbons into valuable lighter products, it helps meet global energy demands while also presenting challenges related to equipment maintenance and environmental impact. As the industry evolves, ongoing research and development will be essential to enhance the efficiency and sustainability of thermal cracking (热裂解) processes, ensuring they can continue to serve as a backbone of energy production in a more environmentally conscious future.