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Desulfurization adsorbent and preparation method and application thereof

An adsorbent and accelerator technology, applied in the field of adsorbent compositions, can solve the problems of reducing the desulfurization activity of the adsorbent, and achieve the effect of improving the activity and stability

Active Publication Date: 2011-01-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above adsorbent uses alumina binder, and zinc aluminate is formed during the preparation process, which reduces the desulfurization activity of the adsorbent

Method used

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  • Desulfurization adsorbent and preparation method and application thereof
  • Desulfurization adsorbent and preparation method and application thereof
  • Desulfurization adsorbent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Slowly add 3.20 kg of titanium tetrachloride (Beijing Chemical Plant, analytically pure) to 3.2 kg of 2wt% hydrochloric acid water, and stir slowly to avoid precipitation of titanium oxide crystals. At this time, the solution exists as a colorless and transparent colloidal solution, called Titanium sol.

[0054] Mix 5.55 kilograms of zinc oxide powder (produced by Beijing Chemical Plant, containing 5.38 kilograms of dry basis) and 10.8 kilograms of deionized water, and stir for 30 minutes to obtain a zinc oxide slurry; add 2.46 kilograms of rector soil (containing dry basis) to the zinc oxide slurry Base 1.84 kg, silicon oxide content 50wt%, alumina content 43wt.%, the rest is CaO, Fe 2 O 3 , MgO, K 2 O and other impurities), and stir and mix for 15 minutes. Then, the above-mentioned titanium sol is added, mixed and stirred for 1 hour to obtain a carrier slurry.

[0055] The carrier slurry adopts Niro Bowen Nozzle Tower TM The spray dryer of the model performs spray dryin...

Embodiment 2

[0059] 3.85 kg ethyl titanate (Aldrich company, analytical grade, 99%) was slowly added to 3.2 kg of 10% nitric acid (chemically pure, produced by Beijing Chemical Plant) solution under stirring and stirred for 1 hour, then the solution It is a pale yellow transparent colloidal solution.

[0060] 4.88 kg of zinc oxide powder (produced by Beijing Chemical Plant, containing 4.73 kg on a dry basis) and 3.50 kg of rector soil (including 2.62 kg on a dry basis, 50wt% silica content, 43wt.% alumina content, and the rest are CaO, Fe 2 O 3 , MgO, K 2 O and other impurities) was added to 10.8 kg of deionized water, and stirred and mixed for 30 minutes. Then, the hydrolyzed titanium sol is added, mixed and stirred for 1 hour to obtain a carrier slurry.

[0061] According 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 adsorbent A2 is: zinc oxide content is 47.3wt%, ...

Embodiment 3

[0063] Add 1.42 kg of titanium oxide (anatase type, containing 1.4 kg of titanium dioxide dry basis, with an average particle size of less than 100nm) into 3.6 kg of 30% hydrochloric acid (chemically pure, produced by Beijing Chemical Plant) and stir and acidify for 1 hour. Titanium oxide is completely dissolved into a colorless and transparent colloidal solution, called titanium sol.

[0064] 5.55 kg of zinc oxide powder (produced by Beijing Chemical Plant, containing 5.38 kg of dry basis) and 1.89 kg of expanded perlite (including 1.84 kg of dry basis, 72wt% silica content, 19wt.% alumina content, and the rest are CaO, Fe 2 O 3 , MgO and other impurities) was added to 10.8 kg of deionized water, and stirred and mixed for 30 minutes. Then, the above alumina sol was added, mixed and stirred for 1 hour to obtain a carrier slurry.

[0065] According to the method of Example 1, the carrier was spray-dried and molded and the active component nickel was introduced to obtain the adsorben...

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Abstract

The invention discloses an adsorbent which is used for removing sulfur from cracked gasoline and diesel fuel. The adsorbent consists of the following components based on the total weight of the adsorbent: 1) 5 to 35 weight percent of silicon oxide, 2) 1 to 20 weight percent of aluminum oxide, 3) 3 to 30 weight percent of titanium oxide, 4) 15 to 75 weight percent of at least one metal oxide selected from IIB, VB and VIB and 5) 5 to 30 weight percent of at least one metal accelerant selected from cobalt, nickel, iron and manganese. The adsorbent has the advantages of high anti-wearing strengthand desulfurization activity.

Description

Technical field [0001] The invention relates to an adsorbent composition suitable for desulfurization in cracked gasoline and diesel fuel, and a preparation method and application thereof. Background technique [0002] As people pay more and more attention to environmental protection, environmental protection laws and regulations are becoming stricter. Reducing the sulfur content of gasoline and diesel is considered to be one of the most important measures to improve air quality, because the sulfur in the fuel will affect the performance of the automobile catalytic converter. Have an adverse effect. The sulfur oxides present in the exhaust gas of automobile engines inhibit the precious metal catalyst in the converter and can cause it to be irreversibly poisoned. The exhaust gas from an inefficient or poisonous converter contains unburned non-methane hydrocarbons and nitrogen oxides and carbon monoxide, and these exhaust gases are catalyzed by sunlight to easily form photochemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/12B01J20/14B01J20/16B01J20/30C10G25/00
Inventor 林伟田辉平王振波
Owner CHINA PETROLEUM & CHEM CORP
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