delayed coking

简明释义

延迟焦化

英英释义

例句

1.Operators must monitor the temperature closely during delayed coking to ensure optimal results.

操作员必须在延迟焦化过程中密切监测温度，以确保最佳结果。

2.The byproducts of delayed coking include petroleum coke and various gases.

在延迟焦化过程中产生的副产品包括石油焦和各种气体。

3.During the delayed coking process, heavy hydrocarbons are thermally cracked.

在延迟焦化过程中，重烃类物质被热裂解。

4.The efficiency of delayed coking can significantly impact the overall yield of the refinery.

在炼油厂中，延迟焦化的效率会显著影响整体产量。

5.The refinery uses delayed coking to convert heavy crude into lighter products.

炼油厂使用延迟焦化将重质原油转化为轻质产品。

作文

In the world of petroleum refining, various processes are employed to convert crude oil into valuable products. One such process is delayed coking, which plays a crucial role in maximizing the yield of lighter hydrocarbons from heavy crude oil. This method is particularly significant for refineries that deal with heavy and sour crude oils, which contain a high amount of impurities and require sophisticated processing techniques.Delayed coking is a thermal cracking process that involves heating heavy oil fractions in a coker unit. The primary objective of this process is to break down large hydrocarbon molecules into smaller, more useful ones, such as gasoline and diesel. During delayed coking, the feedstock is heated to high temperatures in a furnace before being transferred to a coking drum, where it undergoes further thermal cracking. This stage allows the heavier components to decompose into lighter products and solid coke, which can be used as a fuel or in other industrial applications.The term 'delayed' in delayed coking refers to the fact that the cracking reaction is not instantaneous. Instead, there is a delay between the time the feedstock enters the coking drum and when the products are removed. This delay is essential because it allows for sufficient time for the thermal cracking reactions to occur, resulting in a higher yield of lighter hydrocarbons. The duration of this delay can vary depending on the specific characteristics of the feedstock and the desired product slate.One of the key advantages of delayed coking is its ability to produce high-quality liquid fuels while also generating petroleum coke, a byproduct that has several industrial uses. Petroleum coke can be utilized in the production of electrodes for the aluminum industry or as a fuel source in power generation. Moreover, the lighter products obtained from delayed coking can be processed further in other refining units, such as hydrocrackers or fluid catalytic crackers, to produce even more valuable products.However, delayed coking is not without its challenges. The operation of coker units requires careful management to prevent issues such as coking drum fouling, which can lead to operational inefficiencies and increased downtime. Additionally, the production of petroleum coke raises environmental concerns, as its combustion can release harmful pollutants into the atmosphere. Therefore, refineries must implement effective mitigation strategies to address these challenges while maximizing the benefits of delayed coking.In conclusion, delayed coking is a vital process in the petroleum refining industry that enables the conversion of heavy crude oil into lighter, more valuable products. Its ability to produce both high-quality fuels and petroleum coke makes it an essential technology for modern refineries. As the demand for cleaner and more efficient energy sources continues to grow, the importance of optimizing processes like delayed coking will only increase. By understanding and improving this process, refineries can enhance their overall efficiency and contribute to a more sustainable energy future.

在石油精炼的世界中，采用各种工艺将原油转化为有价值的产品。其中一种工艺是延迟焦化，它在最大化重质原油中轻质烃的产量方面发挥着至关重要的作用。这种方法对于处理含有大量杂质的重质和酸性原油的炼油厂尤为重要，这些原油需要复杂的加工技术。延迟焦化是一种热裂解工艺，涉及在焦化装置中加热重油馏分。该过程的主要目标是将大型烃分子分解成更小、更有用的分子，例如汽油和柴油。在延迟焦化过程中，进料在炉中加热到高温，然后转移到焦化罐中，在那里进一步进行热裂解。这个阶段允许更重的组分分解成更轻的产品和固体焦炭，后者可以用作燃料或其他工业应用。延迟这个词在延迟焦化中指的是裂解反应并不是瞬时的。相反，从进料进入焦化罐到产品被移除之间存在一个延迟。这个延迟是必要的，因为它允许有足够的时间进行热裂解反应，从而产生更高的轻质烃产量。这个延迟的持续时间可以根据进料的特定特性和所需的产品组合而有所不同。延迟焦化的一个关键优势是其能够生产高质量的液体燃料，同时也生成石油焦，这是一个具有多种工业用途的副产品。石油焦可用于铝工业电极的生产或作为发电的燃料来源。此外，从延迟焦化中获得的轻质产品可以在其他精炼单元中进一步加工，例如加氢裂化或流化催化裂化，以生产更有价值的产品。然而，延迟焦化并非没有挑战。焦化装置的操作需要精心管理，以防止诸如焦化罐结焦等问题，这可能导致操作效率降低和停机时间增加。此外，石油焦的生产引发了环境问题，因为其燃烧可能会向大气中释放有害污染物。因此，炼油厂必须实施有效的缓解策略，以解决这些挑战，同时最大化延迟焦化的好处。总之，延迟焦化是石油精炼行业中的一项重要工艺，使重质原油转化为更轻、更有价值的产品。它既能生产高质量的燃料，又能产生石油焦，使其成为现代炼油厂的基本技术。随着对更清洁、更高效能源来源的需求不断增长，优化像延迟焦化这样的工艺的重要性只会增加。通过理解和改进这一过程，炼油厂可以提高整体效率，为更可持续的能源未来做出贡献。