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Fuel oil adsorption-desulfurization sorbent and preparation method thereof

A technology of adsorbent and fuel oil, which is applied in chemical instruments and methods, refined hydrocarbon oil, petroleum industry, etc. It can solve the problems of large molecular size and reduce the capacity of adsorbent to adsorb sulfur, etc., and achieve the effect of simple and easy process

Active Publication Date: 2011-06-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, fuel oil, especially diesel oil, contains some polycyclic aromatic hydrocarbons with large molecular sizes. During the desulfurization process of oil products using Y-type molecular sieves, polycyclic aromatic hydrocarbons in oil products will reduce the adsorption sulfur capacity of the adsorbent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] In the preparation method of the adsorbent provided by the present invention, after the NaY molecular sieve is contacted with the solution of metal ions, separation, washing and drying are carried out, and the step of roasting the adsorbent may also be included. Calcination can be carried out after drying, and the calcining method is well known to those skilled in the art. The preferred calcining temperature is 450-550° C., and the calcining time is 0.5-8 hours.

[0027] In the adsorption desulfurization method provided by the present invention, the contacting of the fuel oil with the adsorbent is preferably carried out at room temperature, and the solid-liquid ratio of the adsorbent to the fuel oil is 1g:5mL~1g:200mL, preferably 1g:10mL~1g: 70mL.

Embodiment 1

[0031] This example illustrates the preparation of the adsorbent provided by the present invention.

[0032] 23.1 grams of sodium hydroxide (produced by Beijing Chemical Plant, analytically pure) was dissolved in 42.0 grams of deionized water to prepare a sodium hydroxide solution with a weight concentration of 35%. With 8.2 grams of sodium aluminate (German Riedel-deHaen company production, Al 2 o 3 The content is 54.4% by weight, Na 2 The O content is 42.9% by weight) was dissolved in 20.2 g of deionized water to prepare a low-alkali sodium metaaluminate solution A. Stir to 98.4 milliliters of water glass (production of Qilu Catalyst Factory, Na 2 O content is 75.9g / L, SiO 2 The content is 265g / L, the density is 1.258g / mL), and the prepared sodium hydroxide solution and low-alkali sodium metaaluminate solution A are sequentially added, stirred quickly and uniformly, and aged at 30°C for 22 hours to obtain the directing agent . The ratio of the directing agent is 10.7Na...

Embodiment 2

[0036] This example illustrates the preparation of the adsorbent of the present invention.

[0037] 23.1 grams of sodium hydroxide (produced by Beijing Chemical Plant, analytically pure) was dissolved in 42.0 grams of deionized water to prepare a sodium hydroxide solution with a weight concentration of 35%. With 8.2 grams of sodium aluminate (German Riedel-deHaen company production, Al 2 o 3 The content is 54.4% by weight, Na 2 The O content is 42.9% by weight) was dissolved in 20.2 g of deionized water to prepare a low-alkali sodium metaaluminate solution A. Under stirring, add successively to 98.4 milliliters of water glass (production of Qilu Catalyst Factory, Na 2 O content is 75.9g / L, SiO 2 content of 265g / L, density of 1.258g / mL), add the above-prepared sodium hydroxide solution and low-alkali sodium metaaluminate solution A, stir quickly and evenly, and then age at 30°C for 24 hours under stirring to obtain the directing agent . The ratio of the directing agent is...

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Abstract

The invention relates to a fuel oil adsorption-desulfurization sorbent which contains metal ions and Y-type molecular sieves and is characterized in that grains of the Y-type molecular sieves are lessthan 100 nm. The fuel oil adsorption-desulfurization sorbent is prepared in such a way that alumino silica gel of NaY molecular sieves are firstly prepared by the conventional method and then are concentrated and crystallized to obtain nanometer NaY molecular sieves, and then the molecular sieves and the metal ions are processed by ion exchange. The sorbent is used for the adsorption and the desulfurization of fuel oil containing polycyclic aromatic hydrocarbon and has large adsorption-desulfurization capability.

Description

technical field [0001] The invention relates to a fuel oil adsorption desulfurization adsorbent. Background technique [0002] Sulfur-containing compounds in fuel oil are combusted to produce SO X , SO X Emissions into the atmosphere cause acid rain, and SO in vehicle exhaust X It will lead to the poisoning of automobile exhaust gas conversion catalyst and reduce NO X For this reason, countries have formulated strict environmental regulations to limit the sulfur content in vehicle fuel. [0003] One method of reducing sulfur content in fuel oil is adsorption desulfurization. [0004] CN 1382201A provides a granular adsorbent comprising a zinc titanate carrier loaded with a promoter metal in a substantially reduced valence state selected from cobalt, nickel, iron, manganese, copper, molybdenum, tungsten, silver, tin and vanadium or mixtures thereof Compositions for desulfurizing a cracked gasoline or diesel fuel feed stream in a desulfurization zone by contacting said fe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/18C10G25/03
Inventor 关莉莉汪颖吴佳宋家庆
Owner CHINA PETROLEUM & CHEM CORP
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