Applications of molybdenum based metal Carbonitride mesenchymal alloy for sulfur removal in fuel
A technology of nitrogen carbonization and base metal, which is applied in the application field of molybdenum base metal nitrogen carbonization inter-filling alloy in the deep desulfurization of fuel oil, which can solve the problems of large consumption of extractant, difficulty in preparing ultra-clean fuel, difficulty in extraction, etc., to achieve The effect of reducing equipment investment and operating costs
Active Publication Date: 2012-05-30
溧阳常大技术转移中心有限公司
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Problems solved by technology
American Petro Star Company, Sulph Company and Nippon Petroleum Energy Company have successively developed oxidation extraction desulfurization process, but the consumption of extraction agent is large and the cost is high
British Petroleum (BP) uses alkylation to increase the boiling point of organic sulfides, and then achieves the purpose of desulfurization through distillation. The operation efficiency is low, and the alkylated sulfides are more difficult to further process.
Chinese patent (CN1148436C) also proposed the technology of refining fuel oil by catalytic oxidation extraction of polybasic heteropolyacid, but the operation cost is high and the extraction phase is difficult to handle
[0005] Most of the above desulfurization technologies are reversible processes, limited by chemical equilibrium or phase equilibrium, it is difficult to prepare ultra-clean fuels with sulfur content below 30ppm
Method used
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Embodiment 1
[0020] The monometallic nitrogen carbide intermetallic alloy MoNxCy / γ-Al2O3 with a molybdenum loading of 12% is used as the adsorption material, the surface nitrogen (N) content is 0.136%, and the surface carbon element (C) content is 0.484%. Commercially available No. 93 gasoline (with a sulfur content of 138mg / L) has a space velocity of 7.5h-1 and is subjected to adsorption desulfurization at 50°C. The desulfurization results are shown in Table 1.
Embodiment 2
[0022] Change the loading of molybdenum in Example 1 to 7%, and keep other conditions unchanged, and carry out adsorption desulfurization of gasoline. The desulfurization results are shown in Table 1.
Embodiment 3
[0024] Change the loading of molybdenum in Example 1 to 4%, and keep other conditions unchanged, and carry out adsorption desulfurization of gasoline. The desulfurization results are shown in Table 1.
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The invention relates to an application of alloy compounds filling between transition states of molybdenum based nitrogen and carbon in deep desulfurization of fuel oil. Alloy adsorbing materials filling between the molybdenum based nitrogen and the carbon can be MoNxCy, M1MoNxCy or M1M2MoNxCy, wherein M1 and M2 can be transition metals except Mo. Under the normal pressure and at a temperature of between 0 and 100 DEG C, the fuel oil passes through an adsorbing bed layer of alloy filling between the molybdenum based nitrogen and the carbon at a certain air speed to remove sulfides contained in the fuel oil in high efficiency by selective chemical adsorption, thereby an ultra-clean fuel oil is prepared, the sulfur content of which is below 15ppm. The adsorptive desulfurization process applied in the invention can be operated under conditions of normal pressure, normal temperature or near normal temperature; thereby equipment investment and operating costs are greatly lowered.
Description
technical field [0001] The invention belongs to the field of fuel oil refining. The invention relates to the application of a new type of intermetallic alloy compound in the desulfurization of fuel oil, more specifically the application of a kind of molybdenum-based metal nitrogen carbide intermetallic alloy in the deep desulfurization of fuel oil. Background technique [0002] With the improvement of environmental protection requirements, the restrictions on sulfur content in fuel oil are becoming more and more stringent. The U.S. Environmental Protection Agency (US EPA) requires that the sulfur content in gasoline be controlled below 30ppm, and the sulfur content in diesel for vehicles be controlled below 15ppm. The European Union and Japan have similar regulations. [0003] For refineries, in order to meet the requirements of the new environmental protection regulations, it is still a more realistic solution to improve the effect of hydrotreating. Therefore, major comp...
Claims
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IPC IPC(8): C10G25/00B01J20/02
Inventor 单玉华徐正华邓俊辉李明时韩蕾蕾
Owner 溧阳常大技术转移中心有限公司