Method for Purifying Mineral Oil Fractions and Device Suitable for Conducting Said Method

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This patent describes a method and device for reducing the organic sulfur content in liquid fuel, such as gasoline, diesel, or kerosene. The process involves first enriching the sulfur-containing fuel with hydrogen in a presaturator. The hydrogen-enriched fuel is then passed through a reactor where a special adsorbent material removes sulfur compounds from the fuel. This process can efficiently operate at temperatures ranging from room temperature to higher temperatures, making it more flexible and energy-efficient compared to traditional desulfurization methods.

Use CasesContent extracted from patent full text and abstract with AI.

• Desulfurization of gasoline, diesel, and kerosene in oil refineries to meet regulatory requirements for low sulfur fuels.
• Producing low-sulfur fuels for use in internal combustion engines to reduce pollution and engine corrosion.
• Preparation of clean fuels for use in fuel cells, where sulfur compounds can damage catalysts.
• Post-treatment of fuels to achieve ultra-low sulfur content (below existing regulatory limits).
• Application in continuous refinery operations using multiple reactors and regeneration cycles for industrial-scale purification.

BenefitsContent extracted from patent full text and abstract with AI.

• Reduces sulfur content in fuels to very low levels, helping meet strict environmental and regulatory standards.
• Can operate at lower temperatures (even room temperature), reducing energy consumption and operational costs.
• Less hydrogen is required compared to conventional hydrodesulfurization, improving process economics.
• The process reduces reliance on complex gas-phase systems; most operations occur in the liquid phase, enhancing efficiency and simplicity.
• Regeneration of adsorbent allows continuous operation and minimizes downtime in industrial processes.
• Improved protection of engines, emission control systems, and fuel cell catalysts due to cleaner, low-sulfur fuels.

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Patent Abstract

The invention relates to a method for reducing the organic sulfur content in a liquid fuel containing sulfur, wherein the fuel containing sulfur is first placed in contact with a gas comprising hydrogen in a presaturator, and the hydrogen-enriched liquid fuel is subsequently brought into contact with a suitable adsorbent in a reactor, said adsorbent being able to adsorb at least a portion of the sulfur or sulfur compound from the fuel on the surface. Contact with the adsorbent may advantageously occur not only at temperatures around 400 °C, but also at moderate temperatures down to room temperature because the use of liquid fuel provides a very good contact between the fuel and the surface of the adsorbent, and therefore for the reduction of the sulfur content.