What Are the Advantages of Traditional Hydrocarbon Steam Pre-Reforming Technology?

Traditional hydrocarbon steam pre-reforming technology has several advantages:

Improved Gas Composition:

After pre-reforming, the gas composition primarily consists of CO, CO₂, H₂, CH₄, and H₂O, with minimal higher hydrocarbons (C₂ and above). This composition, when fed into the reforming furnace, reduces the operational constraints on the furnace, lowers the severity of operation, and optimizes steam-to-carbon ratios. It also enhances the adaptability of the unit to changes in feedstock composition, as the pre-reformed gas makes the reforming catalyst less sensitive to variations in steam-to-carbon ratios and feedstock composition. Additionally, pre-reforming catalysts have a desulfurization and dechlorination effect on the feedstock, significantly extending the service life of both reforming and shift catalysts.

Utilization of Heat Energy:

Prior to entering the reforming furnace, the pre-reformed gas can be efficiently preheated using the high-temperature flue gas in the convective section of the furnace. This preheating process, typically conducted to temperatures between 600 and 650°C, helps reduce fuel consumption. By harnessing the heat from the flue gas, the pre-reforming technology contributes to the overall energy efficiency of the process.

These advantages underscore the positive impact of traditional hydrocarbon steam pre-reforming on process efficiency, operational flexibility, and catalyst service life in steam reforming applications.