Ultra-deep oxidation desulfurization method of diesel oil
A diesel and deep technology, applied in chemical instruments and methods, refining with oxygen-containing compounds, treating hydrocarbon oil, etc., can solve the problems of difficult storage and transportation of hydrogen peroxide, large amount of hydrogen peroxide, increased operating costs, etc., to achieve Reduced operating costs, environmental friendliness, and ease of separation
Inactive Publication Date: 2015-03-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF7 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
These methods all use hydrogen peroxide as an oxidant, although its oxidation effect is better and the sulfur removal rate is high, but the amount of hydrogen peroxide is large and regeneration is difficult; and hydrogen peroxide is not easy to store and transport, which greatly increases the operating cost
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0024] Preparation of catalyst:
[0025] a. Weigh 2.19g of sodium metavanadate (18mmol) into a 100ml flask, add 20ml of deionized water, and heat to 60°C. After the heating was stopped, 0.47 g (2 mmol) of periodic acid was added under continuous stirring, and the pH was adjusted to 3-4 with 4 mol / l hydrochloric acid to obtain an orange-red solution.
[0026] b. Dissolve 1.25g (6mmol) of octaalkyltrimethylammonium chloride in 6ml of absolute ethanol, add it dropwise to the above orange-red solution under vigorous stirring, and continue stirring for 1h to obtain a pale yellow precipitate, Centrifugal separation, drying under vacuum conditions for 24h, to obtain catalyst A.
Embodiment 2
[0028] Catalyst B was obtained by preparing in the same manner as described in Example 1 except that 1.66 g (8 mmol) octaalkyltrimethylammonium chloride was used in step b.
Embodiment 3
[0030] Catalyst C was prepared in the same manner as described in Example 1, except that 0.48 g (2 mmol) of sodium molybdate was used instead of periodic acid in step a.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a novel method for removing sulfides in diesel oil by virtue of ultra-deep oxidation by using oxygen (or air) as an oxidizing agent. The novel method mainly comprises the following steps: under mild operating conditions (at normal pressure and a temperature of less than 100 DEG C), mixing diesel oil containing dibenzothiophene, or 4,6-dimethyl dibenzothiophene or benzothiophene with a QxHy[MV9O28] catalyst, stirring, and introducing oxygen; stopping reaction after sulfides in the diesel oil are completely oxidized; and cooling the temperature to be room temperature, filtering out the diesel oil and extracting a small amount of sulphone in the diesel oil, and recycling the separated catalyst, wherein in the catalyst QxHy[MV9O28] (M is equal to I, Mo or Te), Q refers to quaternary ammonium salt cations; when M in the catalyst QxHy[MV9O28] is I, x is equal to 4 or 3, y is equal to 1 or 0, and the sum of x and y is equal to 4; and when M is Mo or Te, x is equal to 4 or 3, y is equal to 2 or 1, and the sum of x and y is equal to 5. According to the novel method disclosed by the invention, in a reaction of removing dibenzothiophene and derivatives of dibenzothiophene under oxidation of oxygen, very high oxidation activity and selectivity can be achieved without adding a sacrificial agent, and the content of the sulfides in the diesel oil can be reduced to less than 10ppm from 500ppm while hydrocarbon compositions remain unchanged. The novel method adopts oxygen as the oxidizing agent, is high in desulfurization efficiency, mild in reaction condition and simple in after-treatment, ensures that the operating cost can be greatly lowered, and is more environment-friendly in a reaction process.
Description
technical field [0001] The invention relates to a method for ultra-deep oxidative desulfurization of diesel fuel, and more particularly to a method for ultra-deep removal of sulfides in diesel oil using oxygen as an oxidant and a heteroatom-substituted quaternary ammonium salt of lauric acid as a catalyst. Background technique [0002] Organic sulfur compounds in diesel fuel cause many environmental problems, and sulfur oxides (SO X ) can not only cause acid rain and photochemical smog to harm human health, but also cause irreversible poisoning of the three-way catalyst of the engine exhaust purification system. In recent years, with the enhancement of human environmental protection awareness, the restrictions on sulfur content in fuel oil have become increasingly strict around the world. In 2013, developed countries such as Europe and Japan stipulated that the sulfur content in gasoline should be 10 ppm, and the sulfur content in diesel should not exceed 15 ppm. However, t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): C10G27/04B01J31/18
CPCB01J31/0271B01J2231/70C10G27/04C10G2300/202C10G2400/04
Inventor 李灿蒋宗轩唐南方
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI