air separation

简明释义

吹气分离

英英释义

例句

1.Industries often rely on air separation technologies to produce nitrogen for food packaging.

工业通常依赖于空气分离技术来生产食品包装所需的氮气。

2.The efficiency of air separation processes can significantly impact overall production costs.

在总体生产成本中，空气分离过程的效率会显著影响。

3.The air separation unit at the plant operates efficiently to meet the demand for various gases.

工厂的空气分离装置高效运作，以满足对各种气体的需求。

4.The process of air separation is crucial for obtaining pure oxygen in medical applications.

在医疗应用中，空气分离过程对于获得纯氧至关重要。

5.In cryogenics, air separation is used to liquefy gases for research purposes.

在低温技术中，空气分离用于液化气体以供研究用途。

作文

Air separation is a crucial process in various industries that involve the extraction of specific gases from the atmosphere. The term air separation refers to the technique of isolating gases such as oxygen, nitrogen, and argon from the air we breathe. This process is essential for numerous applications, including medical use, industrial processes, and even in the production of electronics. Understanding how air separation works can greatly enhance our appreciation of its significance in modern technology.The atmosphere is composed of approximately 78% nitrogen, 21% oxygen, and trace amounts of other gases like argon and carbon dioxide. To separate these gases effectively, several methods are employed, including cryogenic distillation, pressure swing adsorption, and membrane separation. Each of these methods has its own advantages and applications, depending on the desired purity of the gases and the scale of production.Cryogenic distillation is one of the most common methods used in air separation. This process involves cooling air to extremely low temperatures until it liquefies. Once in liquid form, the different gases can be separated based on their boiling points. For instance, oxygen has a higher boiling point than nitrogen, allowing it to be extracted first as the mixture is heated. This method is widely used in large-scale operations, such as those found in oxygen plants that supply hospitals or manufacturing facilities.On the other hand, pressure swing adsorption (PSA) is a more economical method suitable for smaller operations. In this process, compressed air is passed through a bed of adsorbent material that selectively captures certain gases while allowing others to pass through. By alternating pressure conditions, the captured gases can be released and collected separately. PSA is often used for producing high-purity oxygen for medical applications or for generating nitrogen for food packaging.Membrane separation is another innovative approach to air separation. This method uses selective permeable membranes to separate gases based on their molecular size and permeability. It is particularly advantageous for applications requiring small quantities of gas, such as in laboratories or specialty gas production. Membrane technology is gaining popularity due to its compact design and lower energy consumption compared to traditional methods.The importance of air separation cannot be overstated. In healthcare, the availability of pure oxygen is vital for patient care, especially in emergency situations. Industrially, nitrogen is used in processes such as metal fabrication, where it serves as an inert atmosphere to prevent oxidation. Argon, another product of air separation, is commonly used in welding and in the production of light bulbs.Moreover, the advancements in air separation technologies contribute to environmental sustainability. By optimizing gas production processes, industries can reduce energy consumption and minimize their carbon footprint. As the demand for clean energy sources increases, the role of air separation in producing gases for fuel cells and other renewable energy applications will likely expand.In conclusion, air separation is an essential process that plays a significant role in various sectors, from healthcare to manufacturing. By understanding the methods and applications of air separation, we can appreciate its impact on our daily lives and the advancements it brings to technology and sustainability. As research continues to evolve, we can expect further innovations that will enhance the efficiency and effectiveness of air separation processes, ultimately benefiting society as a whole.

空气分离是涉及从大气中提取特定气体的各个行业中的一个关键过程。术语空气分离指的是从我们呼吸的空气中分离氧气、氮气和氩气等气体的技术。这个过程对于许多应用至关重要，包括医疗用途、工业过程，甚至在电子产品的生产中。理解空气分离的工作原理可以大大增强我们对其在现代技术中重要性的认识。大气的组成大约为78%氮气，21%氧气，以及微量的其他气体，如氩气和二氧化碳。为了有效分离这些气体，采用了几种方法，包括低温蒸馏、压力摆动吸附和膜分离。每种方法都有其自身的优缺点，具体取决于所需气体的纯度和生产规模。低温蒸馏是空气分离中最常用的方法之一。该过程涉及将空气冷却到极低的温度，直到其液化。一旦进入液态，不同的气体就可以根据其沸点进行分离。例如，氧气的沸点高于氮气，因此在混合物加热时可以首先提取氧气。此方法广泛用于大型操作，例如供应医院或制造设施的氧气厂。另一方面，压力摆动吸附（PSA）是一种更经济的方法，适合小型操作。在此过程中，压缩空气通过一种选择性吸附材料的床，该材料选择性地捕获某些气体，同时允许其他气体通过。通过交替压力条件，可以释放并单独收集捕获的气体。PSA通常用于生产医疗应用所需的高纯度氧气或生成用于食品包装的氮气。膜分离是另一种创新的空气分离方法。此方法使用选择性透过膜，根据气体的分子大小和渗透性分离气体。它特别适用于需要少量气体的应用，例如实验室或特种气体生产。膜技术因其紧凑的设计和相较于传统方法的较低能耗而越来越受到欢迎。空气分离的重要性不容小觑。在医疗保健中，纯氧的可用性对于患者护理至关重要，尤其是在紧急情况下。在工业上，氮气用于金属加工等过程，作为惰性气氛以防止氧化。氩气，作为空气分离的另一种产品，通常用于焊接和灯泡的生产。此外，空气分离技术的进步有助于环境可持续性。通过优化气体生产过程，工业可以减少能源消耗，最小化其碳足迹。随着对清洁能源来源需求的增加，空气分离在为燃料电池和其他可再生能源应用生产气体中的角色可能会进一步扩大。总之，空气分离是一个重要的过程，在医疗保健到制造业等多个领域发挥着重要作用。通过了解空气分离的方法和应用，我们可以欣赏其对我们日常生活的影响以及它为技术和可持续性带来的进步。随着研究的不断发展，我们可以期待进一步的创新，这将提高空气分离过程的效率和有效性，最终使整个社会受益。