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Alkali metal-containing desulfurization adsorbent and preparation method and application thereof

A technology of adsorbents and alkali metal oxides, applied in the direction of non-metal elements, chemical instruments and methods, refined hydrocarbon oil, etc., can solve the problems of fragile structure and low activity of adsorbents

Active Publication Date: 2010-09-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The adsorbent prepared by the above-mentioned patented method, due to the chemical reaction of zinc oxide in the adsorption desulfurization process, the structure is easily broken during the reaction process, resulting in low activity of the adsorbent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] 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 120 grams of anhydrous sodium carbonate are mixed in 1.5 kilograms of aqueous solutions and the solution is evaporated to dryness, then the mixture is taken out and roasted at 600° C. for 1 hour to obtain the processed expanded perlite.

[0065] 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 acidification. When ...

Embodiment 2

[0070] 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 237 g of potassium formate were added, mixed and stirred for 1 hour to obtain a carrier slurry.

[0071] 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 main chemical composition of the adsorbent A2 is: 46.3wt% of zinc oxide, 20.9wt% of aluminum oxide, 12.9wt% of silicon oxid...

Embodiment 3

[0073] Get 0.65 kilograms of diatomite (World Mining Company, containing 0.58 kilograms on a dry basis, with a silicon oxide content of 86.7wt%, an alumina content of 7.5wt.%, and the rest being CaO, Fe 2 o 3and other impurities) and 0.3 kg of sodium bicarbonate were mixed uniformly in 1.0 kg of aqueous solution and the solution was evaporated to dryness, then the mixture was taken out and roasted at 600° C. for 1 hour to obtain treated diatomite.

[0074] 0.66 kg of kaolin (Suzhou Kaolin Factory, S1, containing 0.55 kg on a dry basis), 1.03 kg of hydrated alumina (SB powder, containing 0.70 kg on a dry basis) and 9.0 kg of neutral water (pH 6-8) were mixed under stirring After uniformity, add 70 grams of concentrated nitric acid (chemically pure, produced by Beijing Chemical Factory) to stir and heat up to above 60°C for acidification for 1 hour. When the temperature dropped below 40°C, 4.0 kg of zinc oxide (including 3.92 kg of pure zinc oxide) powder and the above-mentione...

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Abstract

The invention provides an adsorbent for removing sulfur from cracked gasoline and diesel fuel, which has high abrasion strength resistance and desulfurization activity. Based on the total weight of the adsorbent, the desulfurization adsorbent comprises the following components in percentage by weight: 1) 5 to 35 percent of alumina; 2) 3 to 30 percent of silicon oxide; 3) 10 to 80 percent of metallic oxide which is at least one of IIB, VB and VIB group; 4) 3 to 30 percent of promoter metal which is at least one of VIIB and VIII group; and 5) 0.5 to 10 percent of alkali metal oxide.

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): B01J20/10B01J20/12B01J20/20C10G25/00
Inventor 林伟田辉平王振波
Owner CHINA PETROLEUM & CHEM CORP
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