Diesel hydrogenation

During diesel hydrogenation, it is usually necessary to remove the light components produced as a result of the reaction, including hydrogen and light hydrocarbons, and it is also required to separate products with different boiling points. In some diesel hydrogenation units, fractional distillation towers (distillation towers) are used to separate and purify the products. Traditional diesel hydrogenation units often include multiple distillation columns, such as a crude distillation column and a fine distillation column, to achieve more precise separation. Single-column stripping is a distillation technique that involves using only one distillation column to separate multiple components simultaneously. This technology can simplify equipment configuration and reduce investment and operating costs. However, in practical applications, the separation efficiency of single-column stripping may be inferior to that of traditional multi-column sequences; especially for complex mixtures or when high purity levels are required, it may be difficult to meet the process specifications. For diesel hydrogenation, whether to use a distillation system with single-tower stripping depends on various factors such as the specific hydrogenation process, product requirements, cost budget, and the flexibility of the plant. I don’t have the latest data, but up to the date of my knowledge (April 2023), the multi-tower configuration remained a commonly used setup in industry, as it offers higher separation efficiency and greater operational flexibility. When designing and selecting the plant configuration, process technology suppliers may offer single-column stripping distillation systems with specific features, as an alternative to existing multi-column systems, in order to reduce equipment and operating costs while maintaining product quality. To address this, engineering and technical personnel typically carry out detailed process design, simulation, and economic analysis to determine the most suitable solution. If you are working on a specific process design or technical improvement, it is recommended to consult professional process technology suppliers, as they can provide the most up-to-date technical solutions and data support suitable for your needs. .

Thank you for sharing. The premise for a single tower is that the separation of hydrogen sulfide has already been completed