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Tin-containing desulfurization adsorbent and preparation method and application thereof

An adsorbent, content technology, applied in chemical instruments and methods, refined hydrocarbon oil, other chemical processes, etc., can solve the problems of small pore volume of adsorbent, reduced desulfurization activity, reduced adsorbent activity, etc., and achieve large pore volume. , The effect of high activity stability and high activity stability

Active Publication Date: 2011-07-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In these adsorbent preparation methods, the strength of the adsorbent is improved by adding clay, but since the clay itself has no pores, it is easy to make the pore volume of the adsorbent smaller and reduce the activity of the adsorbent.
At the same time, alumina binder is used, and zinc aluminate is formed during the preparation process, thereby reducing its desulfurization activity

Method used

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  • Tin-containing desulfurization adsorbent and preparation method and application thereof
  • Tin-containing desulfurization adsorbent and preparation method and application thereof
  • Tin-containing desulfurization adsorbent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] 3.30 kg of crystalline tin tetrachloride (SnCl 4 .5H 2 O, Alfa Aesar company, 99%) was slowly added into 3.2 kilograms of acidic waters, and stirred slowly to avoid the precipitation of tin oxide crystals to obtain a colorless and transparent tin sol.

[0056] 5.55 kg of zinc oxide powder (produced by Beijing Chemical Plant, containing 5.38 kg on a dry basis) and 10.8 kg of deionized water were mixed, and after stirring for 30 minutes, a zinc oxide slurry was obtained; 2.11 kg of muscovite (containing a dry basis) were added to the zinc oxide slurry. 1.84 kg), and stirred for 15 minutes. Then the above tin sol was added, mixed and then stirred for 1 hour to obtain a carrier mixture slurry.

[0057] The carrier slurry uses Niro Bowen Nozzle Tower TM The model spray dryer is used for spray drying, the spray drying pressure is 8.5 to 9.5MPa, the inlet temperature is below 500°C, and the outlet temperature is about 150°C. The microspheres obtained by spray drying were f...

Embodiment 2

[0061] 2.52 kg of tin acetate (Aldrich company, analytically pure, 99%) was slowly added to 3.2 kg of 5% hydrochloric acid (chemically pure, produced by Beijing Chemical Plant) solution under stirring and stirred for 1 hour, the solution was white now sol state.

[0062] 4.88 kg of zinc oxide powder (produced by Beijing Chemical Plant, containing 4.73 kg on a dry basis) and 3.01 kg of muscovite (containing 2.62 kg on a dry basis) were added to 10.8 kg of deionized water, and stirred for 30 minutes. Then add the above-mentioned hydrolyzed tin sol, mix and stir for 1 hour to obtain carrier mixture slurry.

[0063] 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: the content of zinc oxide is 47.3wt%, the content of tin dioxide is 10.7wt%, the content of muscovite is 26.2wt%, and the nickel (calculated as metallic nickel) is ...

Embodiment 3

[0065] 3.30 kg of tin acetate (Aldrich company, analytically pure, 99%) was slowly added to 3.2 kg of 5% hydrochloric acid (chemically pure, produced by Beijing Chemical Plant) solution under stirring and stirred for 1 hour, and the solution was white at this time colloidal solution.

[0066] 5.55 kg of zinc oxide powder (produced by Beijing Chemical Plant, containing 5.38 kg on a dry basis) and 1.38 kg of muscovite (containing 1.20 kg on a dry basis) and 0.67 kg of expanded perlite (containing 0.64 kg on a dry basis) were added to 10.8 kg of deionized water, and stir to mix for 30 minutes. Then add the above-mentioned hydrolyzed tin sol, mix and stir for 1 hour to obtain carrier mixture slurry.

[0067]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 A3. The main chemical composition of adsorbent A3 is: zinc oxide content is 53.8wt%, and the content of tin dioxide is 14.0wt%, ...

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Abstract

The invention discloses an adsorbent for removing sulfur from cracked gasoline and diesel fuel. The adsorbent comprises the following components: 1) a silicon oxide source which at least contains mica, 2) a stannic oxide adhesive, 3) oxide(s) of one or more metals selected from IIB, VB and VIB, and 4) at least one accelerator metal selected from cobalt, nickel, iron and manganese. The adsorbent has good wear-resistant strength and desulfurization activity, and can be used for removing elemental sulfur and sulfides such as hydrogen sulfide and organic sulfide from the cracked gasoline and the diesel fuel.

Description

technical field [0001] The invention relates to an adsorbent for desulfurization from liquid raw materials of cracked gasoline and diesel fuel, its preparation method and application. Background technique [0002] 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, because sulfur in fuel will affect the performance of automotive catalytic converters produce adverse effects. Sulfur oxides present in automobile engine exhaust can inhibit and irreversibly poison precious metal catalysts in converters. Exhaust gases from inefficient or poisoned converters contain unburned non-methane hydrocarbons and oxides of nitrogen and carbon monoxide, which are catalyzed by sunlight to form photochemical smog. [0003] Most of the sulfur in gasoline in my country comes from thermally processed ...

Claims

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Application Information

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IPC IPC(8): B01J20/10B01J20/30C10G25/00
Inventor 林伟田辉平朱玉霞王振波许明德王磊徐志成郭瑶庆
Owner CHINA PETROLEUM & CHEM CORP
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