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Methods of Fuel Desulfurization

A fuel and desulfurizer technology, applied in the field of fuel desulfurization, can solve the problems of explosion, increased cost, easy loss of gas and waste heat, etc., and achieve high efficiency and cost saving effects

Active Publication Date: 2016-11-23
郑舜升 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high temperature and high pressure environment will increase the cost, and there is a risk of explosion during processing
In addition, the gas and waste heat in the system are easy to escape, which will also cause environmental pollution
On the other hand, compared with the production of low-sulfur diesel (500ppm), the existing technology requires an additional 25% to 45% of hydrogen consumption for ultra-low-sulfur diesel (15ppm), which shows that such a production technology is not efficient

Method used

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  • Methods of Fuel Desulfurization
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  • Methods of Fuel Desulfurization

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Embodiment Construction

[0015] In order to enable those skilled in the technical field of the present invention to have a better understanding of the present invention, several preferred embodiments of the present invention are specifically listed below, together with the accompanying drawings, to describe in detail the composition and effects of the present invention.

[0016] The improved desulfurization step proposed by the present invention consists of three parts. In the first part, the fuel is oxidized using an ionic liquid, an oxidizing agent, and an acid catalyst. In the second part, a catalyst is used to remove sulfur from thiophene in the fuel. In the third part, the remaining ionic liquid will be used for recycling.

[0017] The first part is to use a phase transfer catalysis (PTC) reaction to oxidize the sulfur of thiophene in the organic phase. In general, phase transfer catalytic reactions include two stages: (1) ion exchange between catalyst and salt in the aqueous phase; (2) rate-de...

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Abstract

The invention provides a method for the desulfurization of fuels. During the step (a), an ionic liquid, an oxidizing agent and an acid catalyst are added into the fuel. During the step (b), a desulfurizing agent is added into the oxidized fuel to form a desulfurizing fuel. During the step (c), the ionic liquid is recovered. During the recovery step, a first solution is added into the ionic liquid firstly. Then a second solution is added into the ionic liquid to form a second solution phase and an ion solution phase. After that, the second solution phase is removed. Finally, the first solution, the oxidizing agent and the acid catalyst are removed to obtain the recovered ionic liquid.

Description

technical field [0001] This field relates to a method for desulfurizing fuel, in particular, relates to a method for desulfurizing fuel, which includes the step of recovering ionic liquid. Background technique [0002] Diesel and gasoline are the two main transportation fuels used today. Diesel engines usually have great fuel mileage, but diesel is usually derived from crude oil, and crude oil contains sulfur content. Therefore, although diesel has high fuel mileage, its benefits are often offset by disadvantages such as high sulfur emissions. Existing hybrids use about 50 mpg of gasoline, about the same as diesel vehicles. Diesel cars, however, typically produce more emissions. Therefore, it is the current trend in the world to reduce the emission of diesel oil to avoid greenhouse gas emissions and protect the environment. Although the technology of diesel engines and emissions has improved, the high sulfur content in diesel still causes pollution. [0003] In 2006, un...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/14
Inventor 郑舜升林德荣
Owner 郑舜升