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Desulfurizing sorbent and preparation method and application thereof

A technology of adsorbent and accelerator, applied in the field of adsorbent composition, can solve the problems of low adsorbent activity and broken structure

Active Publication Date: 2010-07-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the chemical reaction of zinc oxide in the adsorption desulfurization process, the structure is broken during the reaction process, and the activity of the adsorbent is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Get 0.80 kilograms of expanded perlite (world mining company, M27, containing 0.79 kilograms on dry basis, silicon oxide content 72wt%, aluminum oxide content 19wt%, all the other are K 2 O, MgO, Fe 2 o 3 etc.) and 450 grams of magnesium nitrate hexahydrate were mixed uniformly in 1.5 kilograms of aqueous solutions and the solution was evaporated to dryness, then the mixture was taken out and roasted at 500° C. for 1 hour to obtain the processed expanded perlite.

[0063] 0.71 kg of kaolin (Suzhou Kaolin Factory, S1, containing 0.59 kg on a dry basis, with an alumina content of 44wt.%, a silicon oxide content of 50wt.%, and the rest being CaO, Fe 2 o 3 、TiO 2 etc.), 1.15 kg of hydrated alumina (SB powder, containing 0.78 kg on a dry basis) and 9.0 kg of neutral water (pH value 6-8) were mixed evenly under stirring, and 75 g of concentrated nitric acid (chemically pure, Beijing Chemical Industry Co., Ltd. factory) stirring and heating to above 60 ° C for 1 hour acidi...

Embodiment 2

[0068] Get 0.92 kg of expanded perlite (World Mining Company, M27, containing 0.91 kg on dry basis), 0.49 kg of kaolin (Suzhou Kaolin Factory, S1, containing 0.41 kg on dry basis), 1.55 kg of hydrated alumina (SB powder, containing 1.05 kg on dry basis) kg) and 9.0 kg of neutral water (pH 6-8) were mixed evenly under stirring, then 90 g of concentrated nitric acid (chemically pure, produced by Beijing Chemical Plant) was added, stirred and heated to above 60°C for acidification for 1 hour. When the temperature dropped below 40°C, 3.16 kg of zinc oxide (including 3.1 kg of pure zinc oxide) powder and 0.9 kg of magnesium nitrate hexahydrate were added, mixed and stirred for 1 hour to obtain a carrier mixture slurry.

[0069] Referring to the method of Example 1, the carrier was spray-dried and molded and the active component nickel was introduced to obtain the adsorbent A2. The chemical composition of the adsorbent A2 is 46.3wt% of zinc oxide, 20.9wt% of aluminum oxide, 12.9wt% ...

Embodiment 3

[0071] Get 0.98 kilograms of diatomite (World Mining Company, containing 0.88 kilograms on a dry basis, with a silica content of 86.7wt%, an alumina content of 7.5wt.%, and the rest being CaO, Fe 2 o 3 impurities) and 0.35 kg of calcium chloride (calculated without crystal water) in 1.0 kg of aqueous solution were mixed evenly and the solution was evaporated to dryness, then the mixture was taken out and roasted at 700° C. for 1 hour to obtain treated diatomite.

[0072]0.66 kg of kaolin (Suzhou Kaolin Factory, S1, containing 0.55 kg on a dry basis), 1.12 kg of pseudoboehmite (0.70 kg on a dry basis, the main composition of which is alumina) and 9.0 kg of neutral water (pH 6 -8) After mixing evenly under stirring, add 70 grams of concentrated nitric acid (chemically pure, produced by Beijing Chemical Factory) and stir and heat up to above 60°C for acidification for 1 hour. When the temperature dropped below 40°C, 3.59 kg of zinc oxide (including 3.52 kg of pure zinc oxide) po...

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Abstract

The invention provides a sorbent for desulfurizing cracked spirit and diesel engine fuel. The sorbent has good abrasion resistance and desulfurizing activity. With reference of the gross weight of sorbent, the desulfurizing sorbent includes the following components: 5-35wt percent of alumina; 3-30wt percent of monox; 10-80wt percent of metal oxide, at least one type selected from the families of IIB, VB and VIB; 3-30wt percent of accelerant metal, at least one type selected from the families of VIIB and VIII; and 0.5-10wt percent of metal oxide from the IIA family.

Description

technical field [0001] The invention relates to an adsorbent composition suitable for desulfurization in cracked gasoline and diesel fuel and a preparation method thereof. Background technique [0002] The sulfur oxides produced by the combustion of sulfur in vehicle fuels will inhibit the activity of noble metal catalysts in vehicle exhaust converters and cause irreversible poisoning. As a result, the vehicle exhaust contains unburned non-methane hydrocarbons, nitrogen oxides and carbon monoxide, and these exhaust gases are easily catalyzed by sunlight to form photochemical smog and cause acid rain. At the same time, sulfur oxides in the atmosphere are also the main cause of acid rain. one. As people pay more and more attention to environmental protection, environmental regulations are becoming stricter, and reducing the sulfur content of gasoline and diesel is considered to be one of the most important measures to improve air quality. [0003] Most of the sulfur in gasol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/30C10G25/06
Inventor 林伟田辉平王振波李峥朱玉霞
Owner CHINA PETROLEUM & CHEM CORP
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