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Deep desulfurization adsorbent of fuel at normal pressure and normal temperature and preparation method thereof

A fuel depth and adsorbent technology, applied in chemical instruments and methods, refined hydrocarbon oil, and other chemical processes, can solve the problems of poor processing capacity and regeneration, and achieve excellent regeneration performance, high mechanical strength, and simple preparation process Effect

Active Publication Date: 2014-07-16
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Limited organic sulfur treatment capacity and poor regenerability are two major problems of existing adsorbents. In view of the lack of experience and insufficiency in the development of gasoline and diesel desulfurization adsorbents at home and abroad, especially the development of JP fuel deep desulfurization adsorbents is very little. Therefore, the research and development of an efficient, cheap, and excellent regeneration performance JP fuel deep desulfurization adsorbent has become the core issue of selective adsorption desulfurization technology under normal temperature and pressure.

Method used

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  • Deep desulfurization adsorbent of fuel at normal pressure and normal temperature and preparation method thereof

Examples

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Effect test

Embodiment 1

[0030] First, weigh 2.39g of pseudo-boehmite powder, dissolve it in 15ml of deionized water, add 1.0g of concentrated nitric acid dropwise while stirring, put it in an electronic constant temperature water bath, stir at 80°C for 30min, and the preparation is stable Aluminum sol colloid primer, pH value is 0.8. Weigh 11.12g of nickel acetate and 1.82g of cerium acetate respectively, heat and stir evenly, and completely dissolve in deionized water to prepare a Ni-Ce saturated solution. Continue to weigh 45.29g of pseudo-boehmite powder and 2.62g of diatomaceous earth, and blend them with the above-mentioned aluminum sol colloid and Ni-Ce saturated solution respectively for 3 hours to make mud evenly. The material is extruded into a columnar adsorbent green body through a press. Put the strip-shaped adsorbent body into a drying oven at 60°C for 24 hours and dry it for 24 hours, then roast the dried adsorbent body at 650°C for 2 hours under helium gas to obtain Ni-Ce / Al 2 o 3 -...

Embodiment 2

[0032] First, weigh 3.82g of pseudo-boehmite powder, dissolve it in 24ml of deionized water, add 1.6g of concentrated nitric acid dropwise while stirring, put it in an electronic constant temperature water bath, stir at 70°C for 1 hour, and the preparation is stable Aluminum sol colloid primer, PH value is 0.5. Weigh 11.25g of nickel acetate and 1.93g of cerium acetate respectively, heat and stir evenly, and completely dissolve in deionized water to prepare a Ni-Ce saturated solution. First use a clean and dry measuring cylinder to measure an appropriate amount of 9.8ml tetraethyl orthosilicate (TEOS), 3.0ml ethanol and 8.0ml deionized water, pour them into the same clean and dry round bottom flask, then add 0.26g of glacial acetic acid catalyst, and then Stir it on a magnetic stirrer at a constant temperature of 30° C. for 50 minutes to obtain a stable silica sol. Continue to weigh 43.86g of pseudo-boehmite powder, blend with the above-mentioned aluminum sol colloid, Ni-Ce s...

Embodiment 3

[0034] First, heat 0.02mol / L ammonia water bath to 90°C, then add aluminum nitrate equivalent of 0.02mol / L to promote its hydrolysis, after reacting for 1 hour, add nitric acid to promote its precipitation sol, and continue to age for 15 hours, that is, A stable aluminum sol with a pH value of 2 was obtained and used as an adsorbent to prepare a primer. Weigh 11.12g of nickel acetate and 1.82g of cerium acetate respectively, heat and stir evenly, and completely dissolve in deionized water to prepare a Ni-Ce saturated solution. Continue to weigh 45.29g of pseudo-boehmite powder and 2.62g of diatomaceous earth, and blend them with the above-mentioned aluminum sol colloid and Ni-Ce saturated solution respectively for 3 hours to make mud evenly. The material is extruded into a columnar adsorbent green body through a press. Put the strip-shaped adsorbent green body into a drying oven at 80°C for 12 hours, and then roast the dried adsorbent green body at 650°C for 2 hours under hel...

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Abstract

The invention relates to a fuel deep desulfurization adsorbent at normal temperature and pressure and a preparation method thereof, and belongs to the fields of environmentally friendly adsorbent materials and energy and chemical materials. It is characterized by using aluminum-silicon composite oxide as the adsorbent carrier and rare earth cerium modified nickel bimetal as the adsorbent active component. Based on the mass of the carrier, the mass percentage of the active component Ni-Ce is 1 to 30%, and the element molar ratio of Ni / Ce is 2 to 19. The adsorbent is obtained by mixing saturated nickel-cerium composite solution, strongly acidic aluminum sol colloid, pseudo-boehmite, diatomite or silica sol together, aging, extruding, drying and calcining in a reducing atmosphere. The adsorbent Lewis prepared by the invention has strong acidity, high adsorption and removal efficiency of thiophene sulfur, excellent regeneration performance, high mechanical strength, good thermal stability, low cost, no secondary pollution, and simple preparation process. The adsorbent of the present invention is preferably suitable for adsorbing and removing thiophene sulfur, and is also suitable for desulfurizing JP fuel, gasoline, diesel and kerosene.

Description

technical field [0001] The invention relates to an adsorbent for deep desulfurization of fuel at normal temperature and pressure and a preparation method thereof, and belongs to the fields of environmentally friendly adsorption materials and energy and chemical materials. Background technique [0002] Deep desulfurization of fuel, catalytic reforming of hydrogen (or synthesis gas), supply of solid fuel cells for power generation, and development of new portable mobile power sources have become current research hotspots in the field of new energy at home and abroad. The deep desulfurization effect of fuel directly restricts the efficiency of hydrogen production by catalytic reforming, the quality and service life of power supply. Portable mobile power supply requires that the deep desulfurization technology used in its fuel processor is simple and convenient, without any fractionation process, high desulfurization efficiency under ambient temperature and atmospheric pressure,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/10B01J20/30C10G25/00
Inventor 沈岳松马伊凡
Owner NANJING TECH UNIV
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