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Preparation method of attapulgite-based nano compound desulfurizer

A nano-composite, attapulgite technology, applied in chemical instruments and methods, refined hydrocarbon oil, petroleum industry, etc., can solve the problems of gasoline octane loss, large equipment investment and operating costs, etc., to achieve inhibition of agglomeration, selectivity Tall, size-controllable effects

Active Publication Date: 2015-07-01
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

HDS must be carried out under high temperature and high pressure conditions, not only the equipment investment and operating costs are huge, but also the octane number of gasoline will be greatly lost

Method used

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  • Preparation method of attapulgite-based nano compound desulfurizer

Examples

Experimental program
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Effect test

Embodiment 1

[0044] (1) Preparation of titanium dioxide / manganese dioxide / attapulgite nanocomposite carrier: according to the molar ratio of potassium permanganate and manganese sulfate as 2.5:1, take 33.4g potassium permanganate and add it to 160ml, 50g / L attapulgite rod In the stone clay slurry, mix evenly, then add 137.5ml of the mixed solution of titanium tetrachloride and manganese sulfate, the molar ratio of titanium tetrachloride and manganese sulfate is 1:6.1, and the concentration of titanium tetrachloride is 0.1mol / L, then warming up to 80°C while keeping the temperature for 2 hours, adding 0.5mol / L ammonium bicarbonate solution, adjusting pH=6, filtering, washing, and drying to obtain titanium dioxide / manganese dioxide / attapulgite nanocomposite carrier;

[0045] (2) Prepare attapulgite nano-composite desulfurization adsorbent precursor: nickel nitrate and silver nitrate are dissolved in 5ml deionized water according to the molar ratio of nickel and silver at 40:1, and stir evenl...

Embodiment 2

[0053] (1) Preparation of titanium dioxide / manganese dioxide / attapulgite nanocomposite carrier: according to the molar ratio of potassium permanganate and manganese sulfate as 2:1, take 34.8g potassium permanganate and add it to 67ml, 50g / L attapulgite rod In the stone clay slurry, mix evenly, then add 140.63ml of a mixed solution of titanium tetrachloride and manganese sulfate, the molar ratio of titanium tetrachloride and manganese sulfate is 1:10, and the concentration of titanium tetrachloride is 0.08mol / L, then heated up to 100°C and kept for 3h reaction, added 1.5mol / L potassium carbonate solution, adjusted pH=6.5, filtered, washed, dried to obtain titanium dioxide / manganese dioxide / attapulgite nanocomposite carrier.

[0054] (2) Prepare attapulgite nano-composite desulfurization adsorbent precursor: nickel nitrate and silver nitrate are dissolved in 5ml deionized water according to the molar ratio of nickel and silver at 20:1, and stir evenly; The total mass fraction o...

Embodiment 3

[0062] (1) Preparation of titanium dioxide / manganese dioxide / attapulgite nanocomposite carrier: according to the molar ratio of potassium permanganate and manganese sulfate as 5:1, take 108.75g potassium permanganate and add it to 40ml, 100g / L attapulgite rod In the stone clay slurry, mix evenly, then add 100ml of the mixed solution of titanium tetrachloride and manganese sulfate, the molar ratio of titanium tetrachloride and manganese sulfate is 1:28.2, and the concentration of titanium tetrachloride is 0.05mol / L , and then heated up to 150° C. for 5 hours of heat preservation, added 3 mol / L ammonia solution, adjusted to pH=7.5, filtered, washed, and dried to obtain a titanium dioxide / manganese dioxide / attapulgite nanocomposite carrier.

[0063] (2) Prepare attapulgite nano-composite desulfurization adsorbent precursor: nickel nitrate and silver nitrate are dissolved in 5ml deionized water according to the molar ratio of nickel and silver at 10:1, and stir evenly; The total m...

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Abstract

The invention belongs to the field of deep desulfurization of gasoline, relates to a deep adsorption desulfurization technology, and in particular relates to a preparation method of an attapulgite-based nano compound desulfurizer, which is high in selectivity and large in sulfur capacity and has a deep desulfurization effect. The Ni-Ag / TiO2 / MnO / attapulgite compound desulfurizer is prepared by loading nano-grade manganese dioxide and titanium dioxide on the surface of attapulgite to prepare a titanium dioxide / manganese dioxide / attapulgite nano composite carrier, then loading nano nickel oxide and nano silver so as to obtain the precursor of an attapulgite-based nano compound gasoline desulfurizer, and finally, respectively reducing the nickel oxide and the manganese dioxide in the precursor into nano nickel and nano-manganese oxide in a hydrogen atmosphere.

Description

technical field [0001] The invention belongs to the field of gasoline deep desulfurization, relates to deep adsorption desulfurization technology, in particular to a preparation method of an attapulgite nano-composite desulfurization adsorbent with high selectivity, large sulfur capacity and deep desulfurization effect. Background technique [0002] In the 21st century, people pay more and more attention to environmental protection. SO produced by combustion of sulfur-containing gasoline x It is one of the main pollutants that pollute the air, especially SO in the atmosphere 2 Can cause a variety of respiratory diseases, induce cardiovascular diseases, and SO x is the main cause of acid rain. At present, countries around the world strictly control the sulfur content in fuel oil, so the production of low-sulfur gasoline or even sulfur-free gasoline is a hot spot in the refining industry today. [0003] Gasoline desulfurization technology can be simply divided into hydrode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C10G25/05
Inventor 姚超于建民左士祥李霞章刘文杰罗士平魏科年孔泳马建峰
Owner CHANGZHOU UNIV
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